======================================================================== * gdb README ======================================================================== README for GNU development tools This directory contains various GNU compilers, assemblers, linkers, debuggers, etc., plus their support routines, definitions, and documentation. If you are receiving this as part of a GDB release, see the file gdb/README. If with a binutils release, see binutils/README; if with a libg++ release, see libg++/README, etc. That'll give you info about this package -- supported targets, how to use it, how to report bugs, etc. It is now possible to automatically configure and build a variety of tools with one command. To build all of the tools contained herein, run the ``configure'' script here, e.g.: ./configure make To install them (by default in /usr/local/bin, /usr/local/lib, etc), then do: make install (If the configure script can't determine your type of computer, give it the name as an argument, for instance ``./configure sun4''. You can use the script ``config.sub'' to test whether a name is recognized; if it is, config.sub translates it to a triplet specifying CPU, vendor, and OS.) If you have more than one compiler on your system, it is often best to explicitly set CC in the environment before running configure, and to also set CC when running make. For example (assuming sh/bash/ksh): CC=gcc ./configure make A similar example using csh: setenv CC gcc ./configure make Much of the code and documentation enclosed is copyright by the Free Software Foundation, Inc. See the file COPYING or COPYING.LIB in the various directories, for a description of the GNU General Public License terms under which you can copy the files. REPORTING BUGS: Again, see gdb/README, binutils/README, etc., for info on where and how to report problems. ======================================================================== * gdb bfd/README ======================================================================== BFD is an object file library. It permits applications to use the same routines to process object files regardless of their format. BFD is used by the GNU debugger, assembler, linker, and the binary utilities. The documentation on using BFD is scanty and may be occasionally incorrect. Pointers to documentation problems, or an entirely rewritten manual, would be appreciated. There is some BFD internals documentation in doc/bfdint.texi which may help programmers who want to modify BFD. BFD is normally built as part of another package. See the build instructions for that package, probably in a README file in the appropriate directory. BFD supports the following configure options: --target=TARGET The default target for which to build the library. TARGET is a configuration target triplet, such as sparc-sun-solaris. --enable-targets=TARGET,TARGET,TARGET... Additional targets the library should support. To include support for all known targets, use --enable-targets=all. --enable-64-bit-bfd Include support for 64 bit targets. This is automatically turned on if you explicitly request a 64 bit target, but not for --enable-targets=all. This requires a compiler with a 64 bit integer type, such as gcc. --enable-shared Build BFD as a shared library. --with-mmap Use mmap when accessing files. This is faster on some hosts, but slower on others. It may not work on all hosts. Report bugs in BFD to https://sourceware.org/bugzilla/ Patches are encouraged. When sending patches, always send the output of diff -u or diff -c from the original file to the new file. Do not send default diff output. Do not make the diff from the new file to the original file. Remember that any patch must not break other systems. Remember that BFD must support cross compilation from any host to any target, so patches which use ``#ifdef HOST'' are not acceptable. Please also read the ``Reporting Bugs'' section of the gcc manual. Bug reports without patches will be remembered, but they may never get fixed until somebody volunteers to fix them. Copyright (C) 2012-2023 Free Software Foundation, Inc. Copying and distribution of this file, with or without modification, are permitted in any medium without royalty provided the copyright notice and this notice are preserved. ======================================================================== * gdb gdb/README ======================================================================== README for GDB release This is GDB, the GNU source-level debugger. A summary of new features is in the file `gdb/NEWS'. Check the GDB home page at http://www.gnu.org/software/gdb/ for up to date release information, mailing list links and archives, etc. GDB's bug tracking data base can be found at http://www.gnu.org/software/gdb/bugs/ Unpacking and Installation -- quick overview ========================== The release is provided as a gzipped tar file called 'gdb-VERSION.tar.gz', where VERSION is the version of GDB. The GDB debugger sources, the generic GNU include files, the BFD ("binary file description") library, the readline library, and other libraries all have directories of their own underneath the gdb-VERSION directory. The idea is that a variety of GNU tools can share a common copy of these things. Be aware of variation over time--for example don't try to build GDB with a copy of bfd from a release other than the GDB release (such as a binutils release), especially if the releases are more than a few weeks apart. Configuration scripts and makefiles exist to cruise up and down this directory tree and automatically build all the pieces in the right order. When you unpack the gdb-VERSION.tar.gz file, it will create a source directory called `gdb-VERSION'. You can build GDB right in the source directory: cd gdb-VERSION ./configure --prefix=/usr/local (or wherever you want) make all install However, we recommend that an empty directory be used instead. This way you do not clutter your source tree with binary files and will be able to create different builds with different configuration options. You can build GDB in any empty build directory: mkdir build cd build /gdb-VERSION/configure [etc...] make all install (Building GDB with DJGPP tools for MS-DOS/MS-Windows is slightly different; see the file gdb-VERSION/gdb/config/djgpp/README for details.) This will configure and build all the libraries as well as GDB. If `configure' can't determine your system type, specify one as its argument, e.g., `./configure sun4' or `./configure decstation'. Make sure that your 'configure' line ends in 'gdb-VERSION/configure': /berman/migchain/source/gdb-VERSION/configure # RIGHT /berman/migchain/source/gdb-VERSION/gdb/configure # WRONG The GDB package contains several subdirectories, such as 'gdb', 'bfd', and 'readline'. If your 'configure' line ends in 'gdb-VERSION/gdb/configure', then you are configuring only the gdb subdirectory, not the whole GDB package. This leads to build errors such as: make: *** No rule to make target `../bfd/bfd.h', needed by `gdb.o'. Stop. If you get other compiler errors during this stage, see the `Reporting Bugs' section below; there are a few known problems. GDB's `configure' script has many options to enable or disable different features or dependencies. These options are not generally known to the top-level `configure', so if you want to see a complete list of options, invoke the subdirectory `configure', like: /berman/migchain/source/gdb-VERSION/gdb/configure --help (Take note of how this differs from the invocation used to actually configure the build tree.) GDB requires a C++11 compiler. If you do not have a C++11 compiler for your system, you may be able to download and install the GNU CC compiler. It is available via anonymous FTP from the directory `ftp://ftp.gnu.org/pub/gnu/gcc'. GDB also requires an ISO C standard library. The GDB remote server, GDBserver, builds with some non-ISO standard libraries - e.g. for Windows CE. GDB can optionally be built against various external libraries. These dependencies are described below in the "`configure options" section of this README. GDB can be used as a cross-debugger, running on a machine of one type while debugging a program running on a machine of another type. See below. More Documentation ****************** All the documentation for GDB comes as part of the machine-readable distribution. The documentation is written in Texinfo format, which is a documentation system that uses a single source file to produce both on-line information and a printed manual. You can use one of the Info formatting commands to create the on-line version of the documentation and TeX (or `texi2roff') to typeset the printed version. GDB includes an already formatted copy of the on-line Info version of this manual in the `gdb/doc' subdirectory. The main Info file is `gdb-VERSION/gdb/doc/gdb.info', and it refers to subordinate files matching `gdb.info*' in the same directory. If necessary, you can print out these files, or read them with any editor; but they are easier to read using the `info' subsystem in GNU Emacs or the standalone `info' program, available as part of the GNU Texinfo distribution. If you want to format these Info files yourself, you need one of the Info formatting programs, such as `texinfo-format-buffer' or `makeinfo'. If you have `makeinfo' installed, and are in the top level GDB source directory (`gdb-VERSION'), you can make the Info file by typing: cd gdb/doc make info If you want to typeset and print copies of this manual, you need TeX, a program to print its DVI output files, and `texinfo.tex', the Texinfo definitions file. This file is included in the GDB distribution, in the directory `gdb-VERSION/texinfo'. TeX is a typesetting program; it does not print files directly, but produces output files called DVI files. To print a typeset document, you need a program to print DVI files. If your system has TeX installed, chances are it has such a program. The precise command to use depends on your system; `lpr -d' is common; another (for PostScript devices) is `dvips'. The DVI print command may require a file name without any extension or a `.dvi' extension. TeX also requires a macro definitions file called `texinfo.tex'. This file tells TeX how to typeset a document written in Texinfo format. On its own, TeX cannot read, much less typeset a Texinfo file. `texinfo.tex' is distributed with GDB and is located in the `gdb-VERSION/texinfo' directory. If you have TeX and a DVI printer program installed, you can typeset and print this manual. First switch to the `gdb' subdirectory of the main source directory (for example, to `gdb-VERSION/gdb') and then type: make doc/gdb.dvi If you prefer to have the manual in PDF format, type this from the `gdb/doc' subdirectory of the main source directory: make gdb.pdf For this to work, you will need the PDFTeX package to be installed. Installing GDB ************** GDB comes with a `configure' script that automates the process of preparing GDB for installation; you can then use `make' to build the `gdb' program. The GDB distribution includes all the source code you need for GDB in a single directory. That directory contains: `gdb-VERSION/{COPYING,COPYING.LIB}' Standard GNU license files. Please read them. `gdb-VERSION/bfd' source for the Binary File Descriptor library `gdb-VERSION/config*' script for configuring GDB, along with other support files `gdb-VERSION/gdb' the source specific to GDB itself `gdb-VERSION/include' GNU include files `gdb-VERSION/libiberty' source for the `-liberty' free software library `gdb-VERSION/opcodes' source for the library of opcode tables and disassemblers `gdb-VERSION/readline' source for the GNU command-line interface NOTE: The readline library is compiled for use by GDB, but will not be installed on your system when "make install" is issued. `gdb-VERSION/sim' source for some simulators (ARM, D10V, SPARC, M32R, MIPS, PPC, V850, etc) `gdb-VERSION/texinfo' The `texinfo.tex' file, which you need in order to make a printed manual using TeX. `gdb-VERSION/etc' Coding standards, useful files for editing GDB, and other miscellanea. Note: the following instructions are for building GDB on Unix or Unix-like systems. Instructions for building with DJGPP for MS-DOS/MS-Windows are in the file gdb/config/djgpp/README. The simplest way to configure and build GDB is to run `configure' from the `gdb-VERSION' directory. First switch to the `gdb-VERSION' source directory if you are not already in it; then run `configure'. For example: cd gdb-VERSION ./configure make Running `configure' followed by `make' builds the `bfd', `readline', `mmalloc', and `libiberty' libraries, then `gdb' itself. The configured source files, and the binaries, are left in the corresponding source directories. `configure' is a Bourne-shell (`/bin/sh') script; if your system does not recognize this automatically when you run a different shell, you may need to run `sh' on it explicitly: sh configure If you run `configure' from a directory that contains source directories for multiple libraries or programs, `configure' creates configuration files for every directory level underneath (unless you tell it not to, with the `--norecursion' option). You can install `gdb' anywhere; it has no hardwired paths. However, you should make sure that the shell on your path (named by the `SHELL' environment variable) is publicly readable. Remember that GDB uses the shell to start your program--some systems refuse to let GDB debug child processes whose programs are not readable. Compiling GDB in another directory ================================== If you want to run GDB versions for several host or target machines, you need a different `gdb' compiled for each combination of host and target. `configure' is designed to make this easy by allowing you to generate each configuration in a separate subdirectory, rather than in the source directory. If your `make' program handles the `VPATH' feature correctly (GNU `make' and SunOS 'make' are two that should), running `make' in each of these directories builds the `gdb' program specified there. To build `gdb' in a separate directory, run `configure' with the `--srcdir' option to specify where to find the source. (You also need to specify a path to find `configure' itself from your working directory. If the path to `configure' would be the same as the argument to `--srcdir', you can leave out the `--srcdir' option; it will be assumed.) For example, you can build GDB in a separate directory for a Sun 4 like this: cd gdb-VERSION mkdir ../gdb-sun4 cd ../gdb-sun4 ../gdb-VERSION/configure make When `configure' builds a configuration using a remote source directory, it creates a tree for the binaries with the same structure (and using the same names) as the tree under the source directory. In the example, you'd find the Sun 4 library `libiberty.a' in the directory `gdb-sun4/libiberty', and GDB itself in `gdb-sun4/gdb'. One popular reason to build several GDB configurations in separate directories is to configure GDB for cross-compiling (where GDB runs on one machine--the host--while debugging programs that run on another machine--the target). You specify a cross-debugging target by giving the `--target=TARGET' option to `configure'. When you run `make' to build a program or library, you must run it in a configured directory--whatever directory you were in when you called `configure' (or one of its subdirectories). The `Makefile' that `configure' generates in each source directory also runs recursively. If you type `make' in a source directory such as `gdb-VERSION' (or in a separate configured directory configured with `--srcdir=PATH/gdb-VERSION'), you will build all the required libraries, and then build GDB. When you have multiple hosts or targets configured in separate directories, you can run `make' on them in parallel (for example, if they are NFS-mounted on each of the hosts); they will not interfere with each other. Specifying names for hosts and targets ====================================== The specifications used for hosts and targets in the `configure' script are based on a three-part naming scheme, but some short predefined aliases are also supported. The full naming scheme encodes three pieces of information in the following pattern: ARCHITECTURE-VENDOR-OS For example, you can use the alias `sun4' as a HOST argument or in a `--target=TARGET' option. The equivalent full name is `sparc-sun-sunos4'. The `configure' script accompanying GDB does not provide any query facility to list all supported host and target names or aliases. `configure' calls the Bourne shell script `config.sub' to map abbreviations to full names; you can read the script, if you wish, or you can use it to test your guesses on abbreviations--for example: % sh config.sub sun4 sparc-sun-sunos4.1.1 % sh config.sub sun3 m68k-sun-sunos4.1.1 % sh config.sub decstation mips-dec-ultrix4.2 % sh config.sub hp300bsd m68k-hp-bsd % sh config.sub i386v i386-pc-sysv % sh config.sub i786v Invalid configuration `i786v': machine `i786v' not recognized `config.sub' is also distributed in the GDB source directory. `configure' options =================== Here is a summary of the `configure' options and arguments that are most often useful for building GDB. `configure' also has several other options not listed here. There are many options to gdb's `configure' script, some of which are only useful in special situation. *note : (autoconf.info)Running configure scripts, for a full explanation of `configure'. configure [--help] [--prefix=DIR] [--srcdir=PATH] [--target=TARGET] [--host=HOST] [HOST] You may introduce options with a single `-' rather than `--' if you prefer; but you may abbreviate option names if you use `--'. Some more obscure GDB `configure' options are not listed here. `--help' Display a quick summary of how to invoke `configure'. `-prefix=DIR' Configure the source to install programs and files under directory `DIR'. `--srcdir=PATH' *Warning: using this option requires GNU `make', or another `make' that compatibly implements the `VPATH' feature.* Use this option to make configurations in directories separate from the GDB source directories. Among other things, you can use this to build (or maintain) several configurations simultaneously, in separate directories. `configure' writes configuration specific files in the current directory, but arranges for them to use the source in the directory PATH. `configure' will create directories under the working directory in parallel to the source directories below PATH. `--host=HOST' Configure GDB to run on the specified HOST. There is no convenient way to generate a list of all available hosts. `HOST ...' Same as `--host=HOST'. If you omit this, GDB will guess; it's quite accurate. `--target=TARGET' Configure GDB for cross-debugging programs running on the specified TARGET. Without this option, GDB is configured to debug programs that run on the same machine (HOST) as GDB itself. There is no convenient way to generate a list of all available targets. `--enable-targets=TARGET,TARGET,...' `--enable-targets=all` Configure GDB for cross-debugging programs running on the specified list of targets. The special value `all' configures GDB for debugging programs running on any target it supports. `--with-gdb-datadir=PATH' Set the GDB-specific data directory. GDB will look here for certain supporting files or scripts. This defaults to the `gdb' subdirectory of `datadir' (which can be set using `--datadir'). `--with-relocated-sources=DIR' Sets up the default source path substitution rule so that directory names recorded in debug information will be automatically adjusted for any directory under DIR. DIR should be a subdirectory of GDB's configured prefix, the one mentioned in the `--prefix' or `--exec-prefix' options to configure. This option is useful if GDB is supposed to be moved to a different place after it is built. `--enable-64-bit-bfd' Enable 64-bit support in BFD on 32-bit hosts. `--disable-gdbmi' Build GDB without the GDB/MI machine interface. `--enable-tui' Build GDB with the text-mode full-screen user interface (TUI). Requires a curses library (ncurses and cursesX are also supported). `--with-curses' Use the curses library instead of the termcap library, for text-mode terminal operations. `--with-debuginfod' Build GDB with libdebuginfod, the debuginfod client library. Used to automatically fetch source files and separate debug files from debuginfod servers using the associated executable's build ID. Enabled by default if libdebuginfod is installed and found at configure time. debuginfod is packaged with elfutils, starting with version 0.178. You can get the latest version from 'https://sourceware.org/elfutils/'. `--with-libunwind-ia64' Use the libunwind library for unwinding function call stack on ia64 target platforms. See http://www.nongnu.org/libunwind/index.html for details. `--with-system-readline' Use the readline library installed on the host, rather than the library supplied as part of GDB. Readline 7 or newer is required; this is enforced by the build system. `--with-system-zlib Use the zlib library installed on the host, rather than the library supplied as part of GDB. `--with-expat' Build GDB with Expat, a library for XML parsing. (Done by default if libexpat is installed and found at configure time.) This library is used to read XML files supplied with GDB. If it is unavailable, some features, such as remote protocol memory maps, target descriptions, and shared library lists, that are based on XML files, will not be available in GDB. If your host does not have libexpat installed, you can get the latest version from `http://expat.sourceforge.net'. `--with-libiconv-prefix[=DIR]' Build GDB with GNU libiconv, a character set encoding conversion library. This is not done by default, as on GNU systems the `iconv' that is built in to the C library is sufficient. If your host does not have a working `iconv', you can get the latest version of GNU iconv from `https://www.gnu.org/software/libiconv/'. GDB's build system also supports building GNU libiconv as part of the overall build. See the GDB manual instructions on how to do this. `--with-lzma' Build GDB with LZMA, a compression library. (Done by default if liblzma is installed and found at configure time.) LZMA is used by GDB's "mini debuginfo" feature, which is only useful on platforms using the ELF object file format. If your host does not have liblzma installed, you can get the latest version from `https://tukaani.org/xz/'. `--with-gmp=DIR' `--with-gmp-lib=LIBDIR' `--with-gmp-include=INCDIR' Build GDB using the GMP library installed at the directory DIR. If your host does not have GMP installed, you can get the latest version at `https://gmplib.org/'. The `--with-gmp=gmpinstalldir` option is shorthand for `--with-gmp-lib=gmpinstalldir/lib` and `--with-gmp-include=gmpinstalldir/include`. `--with-mpfr=DIR' `--with-mpfr-lib=LIBDIR' `--with-mpfr-include=INCDIR' Build GDB using GNU MPFR installed at the directory DIR, a library for multiple-precision floating-point computation with correct rounding. This library is used to emulate target floating-point arithmetic during expression evaluation when the target uses different floating-point formats than the host. If your host does not have GNU MPFR installed, you can get the latest version from `https://www.mpfr.org/'. The `--with-mpfr=mpfrinstalldir` option is shorthand for `--with-mpfr-lib=mpfrinstalldir/lib` and `--with-mpfr-include=mpfrinstalldir/include`. `--with-python[=PYTHON]' Build GDB with Python scripting support. (Done by default if libpython is present and found at configure time.) Python makes GDB scripting much more powerful than the restricted CLI scripting language. If your host does not have Python installed, you can find it on `http://www.python.org/download/'. The oldest version of Python supported by GDB is 3.2. The optional argument PYTHON is used to find the Python headers and libraries. It can be either the name of a Python executable, or the name of the directory in which Python is installed. `--with-guile[=GUILE]' Build GDB with GNU Guile scripting support. (Done by default if libguile is present and found at configure time.) If your host does not have Guile installed, you can find it at `https://www.gnu.org/software/guile/'. The optional argument GUILE can be a version number, which will cause `configure' to try to use that version of Guile; or the file name of a `pkg-config' executable, which will be queried to find the information needed to compile and link against Guile. `--enable-source-highlight' When printing source code, use source highlighting. This requires libsource-highlight to be installed and is enabled by default if the library is found. `--with-xxhash' Use libxxhash for hashing. This has no user-visible effect but speeds up various GDB operations such as symbol loading. Enabled by default if libxxhash is found. `--with-amd-dbgapi=[auto,yes,no]' Whether to use the amd-dbgapi library to support local debugging of AMD GCN architecture GPUs. When explicitly requesting support for an AMD GCN architecture through `--enable-targets' or `--target', there is no need to use `--with-amd-dbgapi': `configure' will automatically look for the amd-dbgapi library and fail if not found. When using --enable-targets=all, support for the AMD GCN architecture will only be included if the amd-dbgapi is found. `--with-amd-dbgapi=yes' can be used to make it a failure if the amd-dbgapi library is not found. `--with-amd-dbgapi=no' can be used to prevent looking for the amd-dbgapi library altogether. `--without-included-regex' Don't use the regex library included with GDB (as part of the libiberty library). This is the default on hosts with version 2 of the GNU C library. `--with-sysroot=DIR' Use DIR as the default system root directory for libraries whose file names begin with `/lib' or `/usr/lib'. (The value of DIR can be modified at run time by using the "set sysroot" command.) If DIR is under the GDB configured prefix (set with `--prefix' or `--exec-prefix' options), the default system root will be automatically adjusted if and when GDB is moved to a different location. `--with-system-gdbinit=FILE' Configure GDB to automatically load a system-wide init file. FILE should be an absolute file name. If FILE is in a directory under the configured prefix, and GDB is moved to another location after being built, the location of the system-wide init file will be adjusted accordingly. `--with-system-gdbinit-dir=DIR' Configure GDB to automatically load system-wide init files from a directory. Files with extensions `.gdb', `.py' (if Python support is enabled) and `.scm' (if Guile support is enabled) are supported. DIR should be an absolute directory name. If DIR is in a directory under the configured prefix, and GDB is moved to another location after being built, the location of the system- wide init directory will be adjusted accordingly. `--enable-build-warnings' When building the GDB sources, ask the compiler to warn about any code which looks even vaguely suspicious. It passes many different warning flags, depending on the exact version of the compiler you are using. `--enable-werror' Treat compiler warnings as werrors. It adds the -Werror flag to the compiler, which will fail the compilation if the compiler outputs any warning messages. `--enable-ubsan' Enable the GCC undefined behavior sanitizer. By default this is disabled in GDB releases, but enabled when building from git. The undefined behavior sanitizer checks for C++ undefined behavior. It has a performance cost, so if you are looking at GDB's performance, you should disable it. `--enable-unit-tests[=yes|no]' Enable (i.e., include) support for unit tests when compiling GDB and GDBServer. Note that if this option is not passed, GDB will have selftests if it is a development build, and will *not* have selftests if it is a non-development build. `configure' accepts other options, for compatibility with configuring other GNU tools recursively. Remote debugging ================= The files m68k-stub.c, i386-stub.c, and sparc-stub.c are examples of remote stubs to be used with remote.c. They are designed to run standalone on an m68k, i386, or SPARC cpu and communicate properly with the remote.c stub over a serial line. The directory gdbserver/ contains `gdbserver', a program that allows remote debugging for Unix applications. GDBserver is only supported for some native configurations. The file gdbserver/README includes further notes on GDBserver; in particular, it explains how to build GDBserver for cross-debugging (where GDBserver runs on the target machine, which is of a different architecture than the host machine running GDB). Reporting Bugs in GDB ===================== There are several ways of reporting bugs in GDB. The preferred method is to use the World Wide Web: http://www.gnu.org/software/gdb/bugs/ As an alternative, the bug report can be submitted, via e-mail, to the address "bug-gdb@gnu.org". When submitting a bug, please include the GDB version number, and how you configured it (e.g., "sun4" or "mach386 host, i586-intel-synopsys target"). Since GDB supports so many different configurations, it is important that you be precise about this. The simplest way to do this is to include the output from these commands: % gdb --version % gdb --config For more information on how/whether to report bugs, see the Reporting Bugs chapter of the GDB manual (gdb/doc/gdb.texinfo). Graphical interface to GDB -- X Windows, MS Windows ========================== Several graphical interfaces to GDB are available. You should check: https://sourceware.org/gdb/wiki/GDB%20Front%20Ends for an up-to-date list. Emacs users will very likely enjoy the Grand Unified Debugger mode; try typing `M-x gdb RET'. Writing Code for GDB ===================== There is information about writing code for GDB in the file `CONTRIBUTE' and at the website: http://www.gnu.org/software/gdb/ in particular in the wiki. If you are pondering writing anything but a short patch, especially take note of the information about copyrights and copyright assignment. It can take quite a while to get all the paperwork done, so we encourage you to start that process as soon as you decide you are planning to work on something, or at least well ahead of when you think you will be ready to submit the patches. GDB Testsuite ============= Included with the GDB distribution is a DejaGNU based testsuite that can either be used to test your newly built GDB, or for regression testing a GDB with local modifications. Running the testsuite requires the prior installation of DejaGNU, which is generally available via ftp. The directory ftp://sources.redhat.com/pub/dejagnu/ will contain a recent snapshot. Once DejaGNU is installed, you can run the tests in one of the following ways: (1) cd gdb-VERSION make check-gdb or (2) cd gdb-VERSION/gdb make check or (3) cd gdb-VERSION/gdb/testsuite make site.exp (builds the site specific file) runtest -tool gdb GDB=../gdb (or GDB= as appropriate) When using a `make'-based method, you can use the Makefile variable `RUNTESTFLAGS' to pass flags to `runtest', e.g.: make RUNTESTFLAGS=--directory=gdb.cp check If you use GNU make, you can use its `-j' option to run the testsuite in parallel. This can greatly reduce the amount of time it takes for the testsuite to run. In this case, if you set `RUNTESTFLAGS' then, by default, the tests will be run serially even under `-j'. You can override this and force a parallel run by setting the `make' variable `FORCE_PARALLEL' to any non-empty value. Note that the parallel `make check' assumes that you want to run the entire testsuite, so it is not compatible with some dejagnu options, like `--directory'. The last method gives you slightly more control in case of problems with building one or more test executables or if you are using the testsuite `standalone', without it being part of the GDB source tree. See the DejaGNU documentation for further details. Copyright and License Notices ============================= Most files maintained by the GDB Project contain a copyright notice as well as a license notice, usually at the start of the file. To reduce the length of copyright notices, consecutive years in the copyright notice can be combined into a single range. For instance, the following list of copyright years... 1986, 1988, 1989, 1991-1993, 1999, 2000, 2007, 2008, 2009, 2010, 2011 ... is abbreviated into: 1986, 1988-1989, 1991-1993, 1999-2000, 2007-2011 Every year of each range, inclusive, is a copyrightable year that could be listed individually. (this is for editing this file with GNU emacs) Local Variables: mode: text End: ======================================================================== * gdb gdb/config/djgpp/README ======================================================================== How to build and install the DJGPP native version of GDB ******************************************************** General ======= GDB built with DJGPP supports native DJGPP debugging, whereby you run gdb.exe and the program being debugged on the same machine. In addition, this version supports remote debugging via a serial port, provided that the target machine has a GDB-compatible debugging stub which can be linked with the target program (see the section "Remote Serial" in the GDB manual for more details). Installation of the binary distribution ======================================= Simply unzip the gdbNNNb.zip file (where NNN is the version number) from the top DJGPP installation directory. Be sure to preserve the directory structure while you unzip (use -d switch if you do this with PKUNZIP). On Windows 9X and Windows 2000, use an unzip program which supports long file names; one such program is unzip32.exe, available from the DJGPP sites. If you need the libraries which are built as part of GDB, install the companion file gdbNNNa.zip. This allows to develop applications which use the same functions as GDB. For example, you can build your own front end to the debugger. Rebuilding GDB from sources =========================== 1. Prerequisites ------------- To build the package, you will need the DJGPP development environment (GCC, header files, and the libraries), and also DJGPP ports of the following tools: - GNU Make 3.79.1 or later - Bash 2.03 or later - GNU Sed - GNU Fileutils - GNU Textutils 2.0 or later - GNU Sh-utils - GNU Grep 2.4 or later - GNU Findutils - GNU Awk 3.04 or later - GNU Bison (only if you change one of the gdb/*.y files) - Groff (only if you need to format the man pages) - GNU Diffutils (only if you run the test suite) These programs should be available from the DJGPP sites, in the v2gnu directory. In addition, the configuration script invokes the `update' and `utod' utilities which are part of the basic DJGPP development kit (djdevNNN.zip). 2. Unpacking the sources --------------------- If you download the source distribution from one of the DJGPP sites, just unzip it while preserving the directory structure (I suggest to use unzip32.exe available with the rest of DJGPP), and proceed to the section "How to build", below. Source distributions downloaded from one of the GNU FTP sites need some more work to unpack. First, you MUST use the `djunpack' batch file to unzip the package. That's because some file names in the official distributions need to be changed to avoid problems on the various platforms supported by DJGPP. `djunpack' invokes the `djtar' program (that is part of the basic DJGPP development kit) to rename these files on the fly given a file with name mappings; the distribution includes a file `gdb/config/djgpp/fnchange.lst' with the necessary mappings. So you need first to retrieve that batch file, and then invoke it to unpack the distribution. Here's how: djtar -x -p -o gdb-5.2/djunpack.bat gdb-5.2.tar.gz > djunpack.bat djunpack gdb-5.2.tar.gz (The name of the distribution archive and the leading directory of the path to `djunpack.bat' in the distribution will be different for versions of GDB other than 5.2.) If the argument to `djunpack.bat' include leading directories, it MUST be given with the DOS-style backslashes; Unix-style forward slashes will NOT work. If the distribution comes as a .tar.bz2 archive, and your version of `djtar' doesn't support bzip2 decompression, you need to unpack it as follows: bunzip2 gdb-6.4.tar.bz2 djtar -x -p -o gdb-6.4/djunpack.bat gdb-6.4.tar > djunpack.bat djunpack gdb-6.4.tar 3. How to build ------------ If the source distribution available from DJGPP archives is already configured for DJGPP v2.x (if it is, you will find files named `Makefile' in each subdirectory), then just invoke Make: make To build a package that is not yet configured, or if you downloaded GDB from a GNU FTP site, you will need to configure it first. You will also need to configure it if you want to change the configuration options (e.g., compile without support for the GDBMI interface). To configure GDB, type this command: sh ./gdb/config/djgpp/djconfig.sh This script checks the unpacked distribution, then edits the configure scripts in the various subdirectories, to make them suitable for DJGPP, and finally invokes the top-level configure script, which recursively configures all the subdirectories. You may pass optional switches to djconfig.sh. It accepts all the switches accepted by the original GDB configure script. These switches are described in the file gdb/README, and their full list can be displayed by running the following command: sh ./gdb/configure --help NOTE: if you *do* use optional command-line switches, you MUST pass to the script the name of the directory where GDB sources are unpacked--even if you are building GDB in-place! For example: sh ./gdb/config/djgpp/djconfig.sh . --disable-gdbmi It is also possible to build GDB in a directory that is different from the one where the sources were unpacked. In that case, you have to pass the source directory as the first argument to the script: sh ./gdb/config/djgpp/djconfig.sh d:/gnu/gdb-6.4 You MUST use forward slashes in the first argument. After the configure script finishes, run Make: make If you want to produce the documentation (for example, if you changed some of the Texinfo sources), type this: make info When Make finishes, you can install the package: make install prefix='${DJDIR}' INSTALL='ginstall -c' The above doesn't install the docs; for that you will need to say this: make install-info prefix='${DJDIR}' INSTALL='ginstall -c' The test suite has been made to work with DJGPP. If you make a change in some of the programs, or want to be sure you have a fully functional GDB executable, it is a good idea to run the test suite. You cannot use "make check" for that, since it will want to run the `dejagnu' utility which DJGPP doesn't support. Instead, use the special script gdb/config/djgpp/djcheck.sh, like this: cd gdb/testsuite sh ../config/djgpp/djcheck.sh This will run for a while and should not print anything, except the messages "Running tests in DIR", where DIR is one of the subdirectories of the testsuite. Any test that fails to produce the expected output will cause the diffs between the expected and the actual output be printed, and in addition will leave behind a file SOMETHING.tst (where SOMETHING is the name of the failed test). You should compare each of the *.tst files with the corresponding *.out file and convince yourself that the differences do not indicate a real problem. Examples of differences you can disregard are changes in the copyright blurb printed by GDB, values of unitialized variables, addresses of global variables like argv[] and envp[] (which depend on the size of your environment), etc. Note that djcheck.sh only recurses into those of the subdirectories of the test suite which test features supported by the DJGPP port of GDB. For example, the tests in the gdb.gdbtk, and gdb.threads directories are not run. Enjoy, Eli Zaretskii ======================================================================== * gdb gdb/guile/README ======================================================================== README for gdb/guile ==================== This file contains important notes for gdb/guile developers. ["gdb/guile" refers to the directory you found this file in] Nomenclature: In the implementation we use "Scheme" or "Guile" depending on context. And sometimes it doesn't matter. Guile is Scheme, and for the most part this is what we present to the user as well. However, to highlight the fact that it is Guile, the GDB commands that invoke Scheme functions are named "guile" and "guile-repl", abbreviated "gu" and "gr" respectively. Co-existence with Python: Keep the user interfaces reasonably consistent, but don't shy away from providing a clearer (or more Scheme-friendly/consistent) user interface where appropriate. Additions to Python support or Scheme support don't require corresponding changes in the other scripting language. Scheme-wrapped breakpoints are created lazily so that if the user doesn't use Scheme s/he doesn't pay any cost. Importing the gdb module into Scheme: To import the gdb module: (gdb) guile (use-modules (gdb)) If you want to add a prefix to gdb module symbols: (gdb) guile (use-modules ((gdb) #:renamer (symbol-prefix-proc 'gdb:))) This gives every symbol a "gdb:" prefix which is a common convention. OTOH it's more to type. Implementation/Hacking notes: Don't use scm_is_false. For this C function, () == #f (a la Lisp) and it's not clear how treating them as equivalent for truth values will affect the GDB interface. Until the effect is clear avoid them. Instead use gdbscm_is_false, gdbscm_is_true, gdbscm_is_bool. There are macros in guile-internal.h to enforce this. Use gdbscm_foo as the name of functions that implement Scheme procedures to provide consistent naming in error messages. The user can see "gdbscm" in the name and immediately know where the function came from. All smobs contain gdb_smob or chained_gdb_smob as the first member. This provides a mechanism for extending them in the Scheme side without tying GDB to the details. The lifetime of a smob, AIUI, is decided by the containing SCM. When there is no longer a reference to the containing SCM then the smob can be GC'd. Objects that have references from outside of Scheme, e.g., breakpoints, need to be protected from GC. Don't do something that can cause a Scheme exception inside a TRY_CATCH, and, in code that can be called from Scheme, don't do something that can cause a GDB exception outside a TRY_CATCH. This makes the code a little tricky to write sometimes, but it is a rule imposed by the programming environment. Bugs often happen because this rule is broken. Learn it, follow it. Coding style notes: - If you find violations to these rules, let's fix the code. Some attempt has been made to be consistent, but it's early. Over time we want things to be more consistent, not less. - None of this really needs to be read. Instead, do not be creative: Monkey-See-Monkey-Do hacking should generally Just Work. - Absence of the word "typically" means the rule is reasonably strict. - The gdbscm_initialize_foo function (e.g., gdbscm_initialize_values) is the last thing to appear in the file, immediately preceded by any tables of exported variables and functions. - In addition to these of course, follow GDB coding conventions. General naming rules: - The word "object" absent any modifier (like "GOOPS object") means a Scheme object (of any type), and is never used otherwise. If you want to refer to, e.g., a GOOPS object, say "GOOPS object". - Do not begin any function, global variable, etc. name with scm_. That's what the Guile implementation uses. (kinda obvious, just being complete). - The word "invalid" carries a specific connotation. Try not to use it in a different way. It means the underlying GDB object has disappeared. For example, a smob becomes "invalid" when the underlying objfile is removed from GDB. - We typically use the word "exception" to mean Scheme exceptions, and we typically use the word "error" to mean GDB errors. Comments: - function comments for functions implementing Scheme procedures begin with a description of the Scheme usage. Example: /* (gsmob-aux gsmob) -> object */ - the following comment appears after the copyright header: /* See README file in this directory for implementation notes, coding conventions, et.al. */ Smob naming: - gdb smobs are named, internally, "gdb:foo" - in Guile they become , that is the convention for naming classes and smobs have rudimentary GOOPS support (they can't be inherited from, but generics can work with them) - in comments use the Guile naming for smobs, i.e., instead of gdb:foo. Note: This only applies to smobs. Exceptions are also named gdb:foo, but since they are not "classes" they are not wrapped in <>. - smob names are stored in a global, and for simplicity we pass this global as the "expected type" parameter to SCM_ASSERT_TYPE, thus in this instance smob types are printed without the <>. [Hmmm, this rule seems dated now. Plus I18N rules in GDB are not always clear, sometimes we pass the smob name through _(), however it's not clear that's actually a good idea.] Type naming: - smob structs are typedefs named foo_smob Variable naming: - "scm" by itself is reserved for arbitrary Scheme objects - variables that are pointers to smob structs are named _smob or _smob, e.g., f_smob for a pointer to a frame smob - variables that are gdb smob objects are typically named _scm or _scm, e.g., f_scm for a object - the name of the first argument for method-like functions is "self" Function naming: General: - all non-static functions have a prefix, either gdbscm_ or scm_ [or scm_] - all functions that implement Scheme procedures have a gdbscm_ prefix, this is for consistency and readability of Scheme exception text - static functions typically have a prefix - the prefix is typically scm_ where the first two letters are unique to the file or class the function works with. E.g., the scm-arch.c prefix is arscm_. This follows something used in gdb/python in some places, we make it formal. - if the function is of a general nature, or no other prefix works, use gdbscm_ Conversion functions: - the from/to in function names follows from libguile's existing style - conversions from/to Scheme objects are named: prefix_scm_from_foo: converts from foo to scm prefix_scm_to_foo: converts from scm to foo Exception handling: - functions that may throw a Scheme exception have an _unsafe suffix - This does not apply to functions that implement Scheme procedures. - This does not apply to functions whose explicit job is to throw an exception. Adding _unsafe to gdbscm_throw is kinda superfluous. :-) - functions that can throw a GDB error aren't adorned with _unsafe - "_safe" in a function name means it will never throw an exception - Generally unnecessary, since the convention is to mark the ones that *can* throw an exception. But sometimes it's useful to highlight the fact that the function is safe to call without worrying about exception handling. - except for functions that implement Scheme procedures, all functions that can throw exceptions (GDB or Scheme) say so in their function comment - functions that don't throw an exception, but still need to indicate to the caller that one happened (i.e., "safe" functions), either return a smob as a result or pass it back via a parameter. For this reason don't pass back smobs for any other reason. There are functions that explicitly construct smobs. They're obviously the, umm, exception. Internal functions: - internal Scheme functions begin with "%" and are intentionally undocumented in the manual Standard Guile/Scheme conventions: - predicates that return Scheme values have the suffix _p and have suffix "?" in the Scheme procedure's name - functions that implement Scheme procedures that modify state have the suffix _x and have suffix "!" in the Scheme procedure's name - object predicates that return a C truth value are named prefix_is_foo - functions that set something have "set" at the front (except for a prefix) write this: gdbscm_set_gsmob_aux_x implements (set-gsmob-aux! ...) not this: gdbscm_gsmob_set_aux_x implements (gsmob-set-aux! ...) Doc strings: - there are lots of existing examples, they should be pretty consistent, use them as boilerplate/examples - begin with a one line summary (can be multiple lines if necessary) - if the arguments need description: - blank line - " Arguments: arg1 arg2" " arg1: blah ..." " arg2: blah ..." - if the result requires more description: - blank line - " Returns:" " Blah ..." - if it's important to list exceptions that can be thrown: - blank line - " Throws:" " exception-name: blah ..." ======================================================================== * gdb sim/ppc/README ======================================================================== PSIM 1.0.1 - Model of the PowerPC Environments Copyright (C) 1994-1996, Andrew Cagney . This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 3 of the License, or (at your option) any later version. This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details. You should have received a copy of the GNU General Public License along with this program; if not, see . ---------------------------------------------------------------------- PSIM is a program written in extended ANSI-C that implements an instruction level simulation of the PowerPC environment. It is freely available in source code form under the terms of the GNU General Public License (version 3 or later). The PowerPC Architecture is described as having three levels of compliance: UEA - User Environment Architecture VEA - Virtual Environment Architecture OEA - Operating Environment Architecture PSIM both implements all three levels of the PowerPC and includes (for each level) a corresponding simulated run-time environment. In addition, PSIM, to the execution unit level, models the performance of most of the current PowerPC implementations (contributed by Michael Meissner). This detailed performance monitoring (unlike many other simulators) resulting in only a relatively marginal reduction in the simulators performance. A description of how to build PSIM is contained in the file: ftp://ftp.ci.com.au/pub/psim/INSTALL or ftp://cambridge.cygnus.com/pub/psim/INSTALL while an overview of how to use PSIM is in: ftp://ftp.ci.com.au/pub/psim/RUN or ftp://cambridge.cygnus.com/pub/psim/RUN This file is found in: ftp://ftp.ci.com.au/pub/psim/README or ftp://cambridge.cygnus.com/pub/psim/README Thanks goes firstly to: Corinthian Engineering Pty Ltd Cygnus Support Highland Logic Pty Ltd who provided the resources needed for making this software available on the Internet. More importantly I'd like to thank the following individuals who each contributed in their own unique way: Allen Briggs, Bett Koch, David Edelsohn, Gordon Irlam, Michael Meissner, Bob Mercier, Richard Perini, Dale Rahn, Richard Stallman, Mitchele Walker Andrew Cagney Feb, 1995 ---------------------------------------------------------------------- What features does PSIM include? Monitoring and modeling PSIM includes (thanks to Michael Meissner) a detailed model of most of the PowerPC implementations to the functional unit level. SMP The PowerPC ISA defines SMP synchronizing instructions. This simulator implements a limited, but functional, subset of the PowerPC synchronization instructions behaviour. Programs that restrict their synchronization primitives to those that work with this functional sub-set (eg P() and V()) are able to run on the SMP version of PSIM. People intending to use this system should study the code implementing the lwarx instruction. ENDIAN SUPPORT PSIM implements the PowerPC's big and little (xor endian) modes and correctly simulates code that switches between these two modes. In addition, psim can model a true little-endian machine. ISA (Instruction Set Architecture) models PSIM includes a model of the UEA, VEA and OEA. This includes the time base registers (VEA) and HTAB and BATS (OEA). In addition, a preliminary model of the 64 bit PowerPC architecture is implemented. IO Hardware PSIM's internals are based around the concept of a Device Tree. This tree intentionally resembles that of the Device Tree found in OpenBoot firmware. PSIM is flexible enough to allow the user to fully configure this device tree (and consequently the hardware model) at run time. Run-time environments: PSIM's UEA model includes emulation for BSD based UNIX system calls. PSIM's OEA model includes emulation of either: o OpenBoot client interface o MOTO's BUG interface. Floating point Preliminary support for floating point is included. Who would be interested in PSIM? o the curious Using psim, gdb, gcc and binutils the curious user can construct an environment that allows them to play with PowerPC Environment without the need for real hardware. o the analyst PSIM includes many (contributed) monitoring features which (unlike many other simulators) do not come with a great penalty in performance. Thus the performance analyst is able to use this simulator to analyse the performance of the system under test. If PSIM doesn't monitor a components of interest, the source code is freely available, and hence there is no hinderance to changing things to meet a specific analysts needs. o the serious SW developer PSIM models all three levels of the PowerPC Architecture: UEA, VEA and OEA. Further, the internal design is such that PSIM can be extended to support additional requirements. What performance analysis measurements can PSIM perform? Below is the output from a recent analysis run (contributed by Michael Meissner): For the following program: long simple_rand () { static unsigned long seed = 47114711; unsigned long this = seed * 1103515245 + 12345; seed = this; /* cut-cut-cut - see the file RUN.psim */ } Here is the current output generated with the -I switch on a P90 (the compiler used is the development version of GCC with a new scheduler replacing the old one): CPU #1 executed 41,994 AND instructions. CPU #1 executed 519,785 AND Immediate instructions. . . . CPU #1 executed 1 System Call instruction. CPU #1 executed 207,746 XOR instructions. CPU #1 executed 23,740,856 cycles. CPU #1 executed 10,242,780 stalls waiting for data. CPU #1 executed 1 stall waiting for a function unit. . . . CPU #1 executed 3,136,229 branch functional unit instructions. CPU #1 executed 16,949,396 instructions that were accounted for in timing info. CPU #1 executed 871,920 data reads. CPU #1 executed 971,926 data writes. CPU #1 executed 221 icache misses. CPU #1 executed 16,949,396 instructions in total. Simulator speed was 250,731 instructions/second What motivated PSIM? As an idea, psim was first discussed seriously during mid 1994. At that time its main objectives were: o good performance Many simulators loose out by only providing a binary interface to the internals. This interface eventually becomes a bottle neck in the simulators performance. It was intended that PSIM would avoid this problem by giving the user access to the full source code. Further, by exploiting the power of modern compilers it was hoped that PSIM would achieve good performance with out having to compromise its internal design. o practical portability Rather than try to be portable to every C compiler on every platform, it was decided that PSIM would restrict its self to supporting ANSI compilers that included the extension of a long long type. GCC is one such compiler, consequently PSIM should be portable to any machine running GCC. o flexibility in its design PSIM should allow the user to select the features required and customise the build accordingly. By having the source code, the compiler is able to eliminate any un used features of the simulator. After all, let the compiler do the work. o SMP A model that allowed the simulation of SMP platforms with out the large overhead often encountered with such models. PSIM achieves each of these objectives. Is PSIM PowerPC Platform (PPCP) (nee CHRP) Compliant? No. Among other things it does not have an Apple ROM socket. Could PSIM be extended so that it models a CHRP machine? Yes. PSIM has been designed with the CHRP spec in mind. To model a CHRP desktop the following would need to be added: o An apple ROM socket :-) o Model of each of the desktop IO devices o An OpenPIC device. o RTAS (Run Time Abstraction Services). o A fully populated device tree. Is the source code available? Yes. The source code to PSIM is available under the terms of the GNU Public Licence. This allows you to distribute the source code for free but with certain conditions. See the file: ftp://archie.au/gnu/COPYING For details of the terms and conditions. Where do I send bugs or report problems? There is a mailing list (subscribe through majordomo@ci.com.au) at: powerpc-psim@ci.com.au If I get the ftp archive updated I post a note to that mailing list. In addition your welcome to send bugs or problems either to me or to that e-mail list. This list currently averages zero articles a day. Does PSIM have any limitations or problems? PSIM can't run rs6000/AIX binaries - At present PSIM can only simulate static executables. Since an AIX executable is never static, PSIM is unable to simulate its execution. PSIM is still under development - consequently there are going to be bugs. See the file BUGS (included in the distribution) for any other outstanding issues. ======================================================================== * gdb zlib/README ======================================================================== ZLIB DATA COMPRESSION LIBRARY zlib 1.2.12 is a general purpose data compression library. All the code is thread safe. The data format used by the zlib library is described by RFCs (Request for Comments) 1950 to 1952 in the files http://tools.ietf.org/html/rfc1950 (zlib format), rfc1951 (deflate format) and rfc1952 (gzip format). All functions of the compression library are documented in the file zlib.h (volunteer to write man pages welcome, contact zlib@gzip.org). A usage example of the library is given in the file test/example.c which also tests that the library is working correctly. Another example is given in the file test/minigzip.c. The compression library itself is composed of all source files in the root directory. To compile all files and run the test program, follow the instructions given at the top of Makefile.in. In short "./configure; make test", and if that goes well, "make install" should work for most flavors of Unix. For Windows, use one of the special makefiles in win32/ or contrib/vstudio/ . For VMS, use make_vms.com. Questions about zlib should be sent to , or to Gilles Vollant for the Windows DLL version. The zlib home page is http://zlib.net/ . Before reporting a problem, please check this site to verify that you have the latest version of zlib; otherwise get the latest version and check whether the problem still exists or not. PLEASE read the zlib FAQ http://zlib.net/zlib_faq.html before asking for help. Mark Nelson wrote an article about zlib for the Jan. 1997 issue of Dr. Dobb's Journal; a copy of the article is available at http://marknelson.us/1997/01/01/zlib-engine/ . The changes made in version 1.2.12 are documented in the file ChangeLog. Unsupported third party contributions are provided in directory contrib/ . zlib is available in Java using the java.util.zip package, documented at http://java.sun.com/developer/technicalArticles/Programming/compression/ . A Perl interface to zlib written by Paul Marquess is available at CPAN (Comprehensive Perl Archive Network) sites, including http://search.cpan.org/~pmqs/IO-Compress-Zlib/ . A Python interface to zlib written by A.M. Kuchling is available in Python 1.5 and later versions, see http://docs.python.org/library/zlib.html . zlib is built into tcl: http://wiki.tcl.tk/4610 . An experimental package to read and write files in .zip format, written on top of zlib by Gilles Vollant , is available in the contrib/minizip directory of zlib. Notes for some targets: - For Windows DLL versions, please see win32/DLL_FAQ.txt - For 64-bit Irix, deflate.c must be compiled without any optimization. With -O, one libpng test fails. The test works in 32 bit mode (with the -n32 compiler flag). The compiler bug has been reported to SGI. - zlib doesn't work with gcc 2.6.3 on a DEC 3000/300LX under OSF/1 2.1 it works when compiled with cc. - On Digital Unix 4.0D (formely OSF/1) on AlphaServer, the cc option -std1 is necessary to get gzprintf working correctly. This is done by configure. - zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works with other compilers. Use "make test" to check your compiler. - gzdopen is not supported on RISCOS or BEOS. - For PalmOs, see http://palmzlib.sourceforge.net/ Acknowledgments: The deflate format used by zlib was defined by Phil Katz. The deflate and zlib specifications were written by L. Peter Deutsch. Thanks to all the people who reported problems and suggested various improvements in zlib; they are too numerous to cite here. Copyright notice: (C) 1995-2022 Jean-loup Gailly and Mark Adler This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution. Jean-loup Gailly Mark Adler jloup@gzip.org madler@alumni.caltech.edu If you use the zlib library in a product, we would appreciate *not* receiving lengthy legal documents to sign. The sources are provided for free but without warranty of any kind. The library has been entirely written by Jean-loup Gailly and Mark Adler; it does not include third-party code. We make all contributions to and distributions of this project solely in our personal capacity, and are not conveying any rights to any intellectual property of any third parties. If you redistribute modified sources, we would appreciate that you include in the file ChangeLog history information documenting your changes. Please read the FAQ for more information on the distribution of modified source versions. ======================================================================== * gdb zlib/contrib/delphi/readme.txt ======================================================================== Overview ======== This directory contains an update to the ZLib interface unit, distributed by Borland as a Delphi supplemental component. The original ZLib unit is Copyright (c) 1997,99 Borland Corp., and is based on zlib version 1.0.4. There are a series of bugs and security problems associated with that old zlib version, and we recommend the users to update their ZLib unit. Summary of modifications ======================== - Improved makefile, adapted to zlib version 1.2.1. - Some field types from TZStreamRec are changed from Integer to Longint, for consistency with the zlib.h header, and for 64-bit readiness. - The zlib_version constant is updated. - The new Z_RLE strategy has its corresponding symbolic constant. - The allocation and deallocation functions and function types (TAlloc, TFree, zlibAllocMem and zlibFreeMem) are now cdecl, and _malloc and _free are added as C RTL stubs. As a result, the original C sources of zlib can be compiled out of the box, and linked to the ZLib unit. Suggestions for improvements ============================ Currently, the ZLib unit provides only a limited wrapper around the zlib library, and much of the original zlib functionality is missing. Handling compressed file formats like ZIP/GZIP or PNG cannot be implemented without having this functionality. Applications that handle these formats are either using their own, duplicated code, or not using the ZLib unit at all. Here are a few suggestions: - Checksum class wrappers around adler32() and crc32(), similar to the Java classes that implement the java.util.zip.Checksum interface. - The ability to read and write raw deflate streams, without the zlib stream header and trailer. Raw deflate streams are used in the ZIP file format. - The ability to read and write gzip streams, used in the GZIP file format, and normally produced by the gzip program. - The ability to select a different compression strategy, useful to PNG and MNG image compression, and to multimedia compression in general. Besides the compression level TCompressionLevel = (clNone, clFastest, clDefault, clMax); which, in fact, could have used the 'z' prefix and avoided TColor-like symbols TCompressionLevel = (zcNone, zcFastest, zcDefault, zcMax); there could be a compression strategy TCompressionStrategy = (zsDefault, zsFiltered, zsHuffmanOnly, zsRle); - ZIP and GZIP stream handling via TStreams. -- Cosmin Truta ======================================================================== * gdb zlib/contrib/dotzlib/readme.txt ======================================================================== This directory contains a .Net wrapper class library for the ZLib1.dll The wrapper includes support for inflating/deflating memory buffers, .Net streaming wrappers for the gz streams part of zlib, and wrappers for the checksum parts of zlib. See DotZLib/UnitTests.cs for examples. Directory structure: -------------------- LICENSE_1_0.txt - License file. readme.txt - This file. DotZLib.chm - Class library documentation DotZLib.build - NAnt build file DotZLib.sln - Microsoft Visual Studio 2003 solution file DotZLib\*.cs - Source files for the class library Unit tests: ----------- The file DotZLib/UnitTests.cs contains unit tests for use with NUnit 2.1 or higher. To include unit tests in the build, define nunit before building. Build instructions: ------------------- 1. Using Visual Studio.Net 2003: Open DotZLib.sln in VS.Net and build from there. Output file (DotZLib.dll) will be found ./DotZLib/bin/release or ./DotZLib/bin/debug, depending on you are building the release or debug version of the library. Check DotZLib/UnitTests.cs for instructions on how to include unit tests in the build. 2. Using NAnt: Open a command prompt with access to the build environment and run nant in the same directory as the DotZLib.build file. You can define 2 properties on the nant command-line to control the build: debug={true|false} to toggle between release/debug builds (default=true). nunit={true|false} to include or esclude unit tests (default=true). Also the target clean will remove binaries. Output file (DotZLib.dll) will be found in either ./DotZLib/bin/release or ./DotZLib/bin/debug, depending on whether you are building the release or debug version of the library. Examples: nant -D:debug=false -D:nunit=false will build a release mode version of the library without unit tests. nant will build a debug version of the library with unit tests nant clean will remove all previously built files. --------------------------------- Copyright (c) Henrik Ravn 2004 Use, modification and distribution are subject to the Boost Software License, Version 1.0. (See accompanying file LICENSE_1_0.txt or copy at http://www.boost.org/LICENSE_1_0.txt) ======================================================================== * gdb zlib/contrib/pascal/readme.txt ======================================================================== This directory contains a Pascal (Delphi, Kylix) interface to the zlib data compression library. Directory listing ================= zlibd32.mak makefile for Borland C++ example.pas usage example of zlib zlibpas.pas the Pascal interface to zlib readme.txt this file Compatibility notes =================== - Although the name "zlib" would have been more normal for the zlibpas unit, this name is already taken by Borland's ZLib unit. This is somehow unfortunate, because that unit is not a genuine interface to the full-fledged zlib functionality, but a suite of class wrappers around zlib streams. Other essential features, such as checksums, are missing. It would have been more appropriate for that unit to have a name like "ZStreams", or something similar. - The C and zlib-supplied types int, uInt, long, uLong, etc. are translated directly into Pascal types of similar sizes (Integer, LongInt, etc.), to avoid namespace pollution. In particular, there is no conversion of unsigned int into a Pascal unsigned integer. The Word type is non-portable and has the same size (16 bits) both in a 16-bit and in a 32-bit environment, unlike Integer. Even if there is a 32-bit Cardinal type, there is no real need for unsigned int in zlib under a 32-bit environment. - Except for the callbacks, the zlib function interfaces are assuming the calling convention normally used in Pascal (__pascal for DOS and Windows16, __fastcall for Windows32). Since the cdecl keyword is used, the old Turbo Pascal does not work with this interface. - The gz* function interfaces are not translated, to avoid interfacing problems with the C runtime library. Besides, gzprintf(gzFile file, const char *format, ...) cannot be translated into Pascal. Legal issues ============ The zlibpas interface is: Copyright (C) 1995-2003 Jean-loup Gailly and Mark Adler. Copyright (C) 1998 by Bob Dellaca. Copyright (C) 2003 by Cosmin Truta. The example program is: Copyright (C) 1995-2003 by Jean-loup Gailly. Copyright (C) 1998,1999,2000 by Jacques Nomssi Nzali. Copyright (C) 2003 by Cosmin Truta. This software is provided 'as-is', without any express or implied warranty. In no event will the author be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution. ======================================================================== * gdb zlib/win32/README-WIN32.txt ======================================================================== ZLIB DATA COMPRESSION LIBRARY zlib 1.2.12 is a general purpose data compression library. All the code is thread safe. The data format used by the zlib library is described by RFCs (Request for Comments) 1950 to 1952 in the files http://www.ietf.org/rfc/rfc1950.txt (zlib format), rfc1951.txt (deflate format) and rfc1952.txt (gzip format). All functions of the compression library are documented in the file zlib.h (volunteer to write man pages welcome, contact zlib@gzip.org). Two compiled examples are distributed in this package, example and minigzip. The example_d and minigzip_d flavors validate that the zlib1.dll file is working correctly. Questions about zlib should be sent to . The zlib home page is http://zlib.net/ . Before reporting a problem, please check this site to verify that you have the latest version of zlib; otherwise get the latest version and check whether the problem still exists or not. PLEASE read DLL_FAQ.txt, and the the zlib FAQ http://zlib.net/zlib_faq.html before asking for help. Manifest: The package zlib-1.2.12-win32-x86.zip will contain the following files: README-WIN32.txt This document ChangeLog Changes since previous zlib packages DLL_FAQ.txt Frequently asked questions about zlib1.dll zlib.3.pdf Documentation of this library in Adobe Acrobat format example.exe A statically-bound example (using zlib.lib, not the dll) example.pdb Symbolic information for debugging example.exe example_d.exe A zlib1.dll bound example (using zdll.lib) example_d.pdb Symbolic information for debugging example_d.exe minigzip.exe A statically-bound test program (using zlib.lib, not the dll) minigzip.pdb Symbolic information for debugging minigzip.exe minigzip_d.exe A zlib1.dll bound test program (using zdll.lib) minigzip_d.pdb Symbolic information for debugging minigzip_d.exe zlib.h Install these files into the compilers' INCLUDE path to zconf.h compile programs which use zlib.lib or zdll.lib zdll.lib Install these files into the compilers' LIB path if linking zdll.exp a compiled program to the zlib1.dll binary zlib.lib Install these files into the compilers' LIB path to link zlib zlib.pdb into compiled programs, without zlib1.dll runtime dependency (zlib.pdb provides debugging info to the compile time linker) zlib1.dll Install this binary shared library into the system PATH, or the program's runtime directory (where the .exe resides) zlib1.pdb Install in the same directory as zlib1.dll, in order to debug an application crash using WinDbg or similar tools. All .pdb files above are entirely optional, but are very useful to a developer attempting to diagnose program misbehavior or a crash. Many additional important files for developers can be found in the zlib127.zip source package available from http://zlib.net/ - review that package's README file for details. Acknowledgments: The deflate format used by zlib was defined by Phil Katz. The deflate and zlib specifications were written by L. Peter Deutsch. Thanks to all the people who reported problems and suggested various improvements in zlib; they are too numerous to cite here. Copyright notice: (C) 1995-2017 Jean-loup Gailly and Mark Adler This software is provided 'as-is', without any express or implied warranty. In no event will the authors be held liable for any damages arising from the use of this software. Permission is granted to anyone to use this software for any purpose, including commercial applications, and to alter it and redistribute it freely, subject to the following restrictions: 1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. 2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. 3. This notice may not be removed or altered from any source distribution. Jean-loup Gailly Mark Adler jloup@gzip.org madler@alumni.caltech.edu If you use the zlib library in a product, we would appreciate *not* receiving lengthy legal documents to sign. The sources are provided for free but without warranty of any kind. The library has been entirely written by Jean-loup Gailly and Mark Adler; it does not include third-party code. If you redistribute modified sources, we would appreciate that you include in the file ChangeLog history information documenting your changes. Please read the FAQ for more information on the distribution of modified source versions. ======================================================================== * gdb COPYING, include/COPYING ======================================================================== GNU GENERAL PUBLIC LICENSE Version 2, June 1991 Copyright (C) 1989, 1991 Free Software Foundation, Inc. 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA Everyone is permitted to copy and distribute verbatim copies of this license document, but changing it is not allowed. Preamble The licenses for most software are designed to take away your freedom to share and change it. By contrast, the GNU General Public License is intended to guarantee your freedom to share and change free software--to make sure the software is free for all its users. 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