This is the DJGPP port of gcc-4.0.0 Please read this file up to end (maybe skipping sections You don't need, for example You don't need to read how to build gcc-4.0.0 from sources if You only intend to use binary archives). Also consult DJGPP documentation and FAQ where needed. Requirements to use this binary release: DJGPP-2.04 or above. binutils-2.15 or above (Earlier versions beginning with binutils-2.11 may work, but this is not tested, 2.9.1 or earlier will not work. ######################### NOTE ############################################## This update of DJGPP port of DJGPP generates from C++ sources object files that are not compatible with ones generated by any earlier releases of DJGPP ports of GCC (including also first release of DJGPP port of GCC-4.0.0). So it's required to recompile all C++ sources after upgrade. ############################################################################### Requirements to build gcc-4.0.0 from sources: Long filename support. I built it in DOS session under WinXP Pro (SP2). Win95, Win98, WinME or Win2K should be Ok. I myself haven't tested whether it can be build under Win98, Win2k or Win2K. perhaps at least 128Mb of RAM for building (Amount of available DPMI memory for DOS session should be set to auto). at least DJGPP-2.04 beta 1 required other GNU utilities (see below) Source archives =============== Archive gcc400s2.zip contains script which modifies original gcc-4.0.0 and sources for DJGPP. You don't need it unless You want to recreate GCC source archive for DJGPP. If You are using this archive and original sources of gcc-4.0.0.tar.gz, then You don't need gcc400s.zip. The source archive gcc400s.zip contains all the sources to build all compilers (C, C++, Objective C, GNU Fortran) and also C++ and Fortran libraries (libstdcxx.a, libgpp.a and libg2c.a). libg++ is no more supported. Most users don't need source archives at all. Binary archives ================ Binary archives are split into 5 parts: gcc400b.zip : The gcc.exe driver program and the C compiler. It also contains the documentation. gpp400b.zip : The C++ compiler and libstdcxx.a together with needed header files. Please note that one must recompile all C++ sources built with any earlier GCC version objc400b.zip : The Objective C compiler and libobjc.a and the needed header files. gfor400b.zip : GNU Fortran compiler ada400b.zip : Ada compiler (untested) The archive gcc400b.zip is required by all other binary packages Binary packages includes following documentation files: Archive gcc400b.zip: info/gcc.info - the use and the internals of the GNU compiler info/cpp.info - documentation of the GNU C preprocessor. info/cppinternals.info - internals of the GNU C Preprocessor. info/gccinstall.info info/gccint.info (NEW: use install-info to add it to info/dir) Archive gpp400b.zip: gnu/gcc-4.00/libstdcxx/* - some documentation of libstdc++-v3 (HTML and text formats) Archive gfor400b.zip: info/gfortran.info - documentation of the GNU Fortran compiler Before you install gcc-4.0.0 binaries ====================================== You should remove previous installation of gcc or egcs completely (unless You really know what You are doing). Make sure You don't have following files from earlier versions (relative paths againt to DJGPP directory are given): bin/cc1.exe (from gcc272b.zip or gcc2721b.zip) bin/cc1plus.exe (from gpp272b.zip or gpp2721b.zip) bin/f771.exe (from g7705XXb.zip, XX are 2 digits) lib/libgcc.a (from gcc272b.zip or gcc2721b.zip) lib/libobjc.a lib/specs (from djdev201.zip or djdev202.zip) lib/libstdcxx.a lib/libgpp.a Following packages are required for binaries: binutils-2.15 or above. (Versions before 2.11 will not work, beginning with 2.11, but before 2.14 may work, but it's not tested) DJGPP-2.04 beta 1 or newer (djdev204.zip) Installing binaries of gcc-4.0.0 ================================= Needed archives for different programing languages C : gcc400b.zip C++ : gcc400b.zip, gpp400b.zip Fortran 95 : gcc400b.zip, gfor400b.zip Objective C : gcc400b.zip, objc400b.zip Ada : gcc400b.zip, ada400b.zip Of course for ALL languages You also need at least binutils (bnu215b.zip or newer) and djdev204.zip (or newer when it will be released) Unzip all the zip files from that directory, preserving the directory structure. For example: pkunzip -d djdev203 or unzip386 djdev203 NOTE: For debugging GDB version 6.3 or above is recommended. (gdb-6.3 is not released for DJGPP yet though). 1. Only long filenames ---------------------- Unzip the binaries with an unzip program, which can restore the long filenames stored in the zip archive. 2. Only short filenames ----------------------- Unzip the binaries with an unzip program which doesn't know about long filenames, or if your unzipper knows about them, please follow first the steps described in the DJGPP FAQ in the section about setting the NameNumericTail to 0 __BEFORE__!!! unzipping the archives. 3. Long and short filenames at the same time -------------------------------------------- Use an unzip program which can restore the long filenames and follow the instructions under 2. when the unzipper knows about long filenames. Note for users of C++ IO classes fstream, ifstream, ofstream ============================================================ There is a regression against earlier versions of GCC (gcc-2.95.3 and earlier): Member functions tellp(), tellg(), seekp() and seekg() are broken when stream is opened not in binary mode. If You are going to use any similar functions You should open stream in binary mode. Don't ask me when it will be fixed as I don't know that. I'm also not sure I'll spend much time trying to fix that. Rebuilding gcc-4.0.0 from the sources ====================================== Requirememts ------------ - Long filename support is required. It means You should build gcc-4.0.0 under Win95, Win98, WinME, Win2000 or WinXP. I myself built gcc-4.0.0 under WinXP. - Much of free disk space (600Mb or more, perhaps not possible at all on FAT16 partition). - perhaps 128Mb RAM (or more) to build gcc-4.0.0 under Win9X. DPMI memory amount for DOS session should be set to "Auto". Building on machine with only 64 Mb of memory is not tested. (I used machine with 1 Gb of memory, operatind system WinXP Pro SP2) - Many GNU packages. I had following ones bash-2.0.5b GNU Diffutils 2.8 GNU Fileutils-4.1 GNU Find 4.1.7 GNU grep 2.5.1 GNU Awk 3.1.1 GNU Make 3.80 GNU Sed 4.0.7 GNU shell utils 2.0.11 GNU Textutils 2.0 GNU Texinfo 4.8 GNU tar 1.1.2 GNU binutils 2.15 working GNU C compiler (perhaps not earlier than gcc-3.3). If You modify some source files You may also need autoconf-2.59 or above automake-1.9.4 or above (for some directories also old autoconf-2.13 and automake-1.5 may be needed) You need autoconf and automake also if You are using gcc400s2.zip. However it's normally not needed for most users who builds gcc-4.0.0 from contents of gcc400s.zip. In that case You need to edit script unpack-gcc to specify place where old and new versions of autoconf and automake are installed Usually newer versions of these packages should also work unless otherwise stated above. Older versions may work in some cases, but that is not tested - INFO-ZIP binary (compiled with DJGPP v2!!!) is needed for using build.sh to create binary distrubution archives. There is no problems to compile it. See http://www.info-zip.org for additional informtion about INFO-ZIP. You can find DJGPP compiled binary there. - Working DJGPP installation of course: DJGPP-2.04, working gcc installation (gcc-3.3.0 or above, You need working Ada compiler to build Ada compiler) - You should have sh.exe in DJGPP bin directory as symbolic link to bash.exe (type 'ln -s bash.exe sh.exe' in that directory) Extracting the sources ---------------------- At first you should unzip the archive gcc400s.zip. The sources are _NOT_ the complete sources like the original gcc-4.0.0 distribution. I have removed many files to save disk space which are not needed for the DJGPP port. However I left configuration of other machines in to make archives usable to build cross-to-DJGPP compilers and DJGPP hosted cross-compilers (I haven't tested it). Compiling gcc ------------- Directory gnu/gcc-4.00 contains all sources of gcc-4.0.0 Sources are NOT configured. Change to directory gnu/build.gcc and configure sources by running script djconfig.sh. sh djconfig.sh When this is done You can build gcc-4.0.0 by running script djmake.sh Under Win9X You'll have to restart it some times when it will crash due to Win9X DPMI descriptor leaks. You may use redir to get output in file. sh djmake.sh bootstrap When this sucessfully ends run script djinsttmp.sh which installs all into directory gnu/install.gcc After that change to this directory and run script makepkg.sh to create binary distribution packages Installing newly compiled gcc ----------------------------- It's recommended to install binary packages which are generated by makepkg.sh Available resources =================== See following URL for additional information: gcc: http://gcc.gnu.org Reporting bugs ============== If you found a bug in gcc-4.0.0 (gcc, g77, libstdc++, etc) please report it to the GCC bug adresses and _NOT_ (or at least not only) in the DJGPP news group. But if you think you found a bug in the DJGPP related things, then please report it in comp.os.msdos.djgpp (the news group) or mail it to djgpp@delorie.com, which is the gateway to the news group. Some possible situations: - gcc says 'Internal compiler error' (or something similar) more likely it is error of gcc if it is reproducible. It would be nice to test on some other system (e.g. Linux) and also with different version of compiler if possible and submit report to gcc bug address. - gcc crashes or freezes. In this situation it's hard to guess where is the problem. It may be problem with gcc itself but it may be also DJGPP specific one. Please email me directly only in rare cases, if you think it is only of interest to me, since I'll see the reports in DJGPP mailing list. Thanks to ========= To all who have contributed new features, test results, bugfixes to GCC (see http://gcc.gnu.org/thanks.html) and also who helped with DJGPP port of gcc-4.0.0 Have fun with gcc Andris Pavenis