ded59a1e28
it: * config/djgpp/djconfig.sh: New file. * config/djgpp/config.sed: New file. * config/djgpp/README: New file. * config/djgpp/fnchange.lst: New file. * config/djgpp/djcheck.sh: New file.
172 lines
6.4 KiB
Text
172 lines
6.4 KiB
Text
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How to build and install the DJGPP native version of GDB
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********************************************************
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General
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=======
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GDB built with DJGPP supports native DJGPP debugging, whereby you run
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gdb.exe and the program being debugged on the same machine. In
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addition, this version supports remote debugging via a serial port,
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provided that the target machine has a GDB-compatible debugging stub
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which can be linked with the target program (see the section "Remote
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Serial" in the GDB manual for more details).
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Installation of the binary distribution
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=======================================
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Simply unzip the gdbNNNb.zip file (where NNN is the version number)
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from the top DJGPP installation directory. Be sure to preserve the
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directory structure while you unzip (use -d switch if you do this with
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PKUNZIP). On Windows 9X and Windows 2000, use an unzip program which
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supports long file names; one such program is unzip32.exe, available
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from the DJGPP sites.
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If you need the libraries which are built as part of GDB, install the
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companion file gdbNNNa.zip. This allows to develop applications which
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use the same functions as GDB. For example, you can build your own
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front end to the debugger.
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Rebuilding GDB from sources
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===========================
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1. Prerequisites
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-------------
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To build the package, you will need the DJGPP development environment
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(GCC, header files, and the libraries), and also DJGPP ports of the
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following tools:
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- GNU Make 3.78.1 or later
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- Bash 2.03 or later
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- GNU Sed
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- GNU Fileutils
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- GNU Textutils 2.0 or later
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- GNU Sh-utils
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- GNU Grep 2.4 or later
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- GNU Findutils
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- GNU Awk 3.04 or later
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- GNU Bison (only if you change one of the gdb/*.y files)
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- Groff (only if you need to format the man pages)
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- GNU Diffutils (only if you run the test suite)
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These programs should be available from the DJGPP sites, in the v2gnu
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directory. In addition, the configuration script invokes the `update'
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and `utod' utilities which are part of the basic DJGPP development kit
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(djdevNNN.zip).
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2. Unpacking the sources
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---------------------
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If you download the source distribution from one of the DJGPP sites,
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just unzip it while preserving the directory structure (I suggest to
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use unzip32.exe available with the rest of DJGPP), and proceed to the
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section "How to build" below.
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Source distributions downloaded from one of the GNU FTP sites need
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some more work to unpack. First, you MUST use the `djtar' program to
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unzip the package. That's because some file names in the official
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distributions need to be changed to avoid problems on the various
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platforms supported by DJGPP. `djtar' can rename files on the fly
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given a file with name mappings; the distribution includes a file
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`gdb/config/djgpp/fnchange.lst' with the necessary mappings. So you
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need first to retrieve that file, and then invoke `djtar' to unpack
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the distribution. Here's how:
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djtar -x -p -o gdb-5.0/gdb/config/djgpp/fnchange.lst gdb-5.0.tar.gz > lst
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djtar -x -n lst gdb-5.0.tar.gz
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(The name of the distribution archive and the top-level directory will
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be different for versions other than 5.0.)
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3. How to build
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------------
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The source distribution available from DJGPP archives is already
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configured for DJGPP v2.x, so if you only want to compile it, just
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invoke Make:
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make
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To build a package downloaded from a GNU FTP site, you will need o
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configure it first. You will also need to configure it if you want to
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change the configuration options (e.g., compile with support for the
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GDBMI interface). To configure GDB, type this command:
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sh ./gdb/config/djgpp/djconfig.sh
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This script checks the unpacked distribution, then edits the configure
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scripts in the various subdirectories, to make them suitable for
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DJGPP, and finally invokes the top-level configure script, which
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recursively configures all the subdirectories.
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You may pass optional switches to djconfig.sh. It accepts all the
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switches accepted by the original GDB configure script. These
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switches are described in the file gdb/README, and their full list be
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displayed by running the following command:
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sh ./gdb/configure --help
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NOTE: if you *do* use optional command-line switches, you MUST pass
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to the script the name of the directory where GDB sources are
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unpacked--even if you are building GDB in-place! For example:
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sh ./gdb/config/djgpp/djconfig.sh . --enable-gdbmi
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It is also possible to build GDB in a directory that is different from
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the one where the sources were unpacked. In that case, you have to
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pass the source directory as the first argument to the script:
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sh ./gdb/config/djgpp/djconfig.sh d:/gnu/gdb-5.0
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You MUST use forward slashes in the first argument.
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After the configure script finishes, run Make:
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make
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When Make finishes, you can install the package:
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make install INSTALL='/dev/env/DJDIR/bin/ginstall -c'
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The above doesn't install the docs; for that you will need to say
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this:
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make -k install-info INSTALL='/dev/env/DJDIR/bin/ginstall -c'
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(The -k switch is required, because some unneeded targets that are
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part of the install process fail; -k lets Make run to completion
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nonetheless.)
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The test suite has been made to work with DJGPP. If you make a change
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in some of the programs, or want to be sure you have a fully
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functional GDB executable, it is a good idea to run the test suite.
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You cannot use "make check" for that, since it will want to run the
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`dejagnu' utility which GDB doesn't support. Instead, use the special
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script gdb/config/djgpp/djcheck.sh, like this:
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cd gdb/testsuite
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sh ../config/djgpp/djcheck.sh
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This will run for a while and should not print anything. Any test
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that fails to produce the expected output will cause the diffs between
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the expected and the actual output be printed, and in addition will
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leave behind a file SOMETHING.tst (where SOMETHING is the name of one
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of the tests). You should compare each of the *.tst files with the
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corresponding *.out file and convince yourself that the differences do
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not indicate a real problem. Examples of differences you can
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disregard are changes in the copyright blurb printed by GDB, values of
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unitialized variables, addresses of global variables like argv[] and
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envp[] (which depend on the size of your environment), etc.
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Note that djcheck.sh only recurses into those of the subdirectories of
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the test suite which test features supported by the DJGPP port of GDB.
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For example, the tests in the gdb.gdbtk, gdb.threads, and gdb.hp
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directories are not run.
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Enjoy,
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Eli Zaretskii <eliz@is.elta.co.il>
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