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177 lines
6.5 KiB
Plaintext
177 lines
6.5 KiB
Plaintext
Port of GNU make to OS/2.
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Features of GNU make that do not work under OS/2:
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- remote job execution
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- dynamic load balancing
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Special features of the OS/2 version:
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Due to the fact that some people might want to use sh syntax in
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Makefiles while others might want to use OS/2's native shell cmd.exe,
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GNU make supports both shell types. The following list defines the order
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that is used to determine the shell:
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1. The shell specified by the environment variable MAKESHELL.
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2. The shell specified by the SHELL variable within a Makefile. Like
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Unix, SHELL is NOT taken from the environment.
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3. The shell specified by the COMSPEC environment variable.
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4. The shell specified by the OS2_SHELL environment variable.
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5. If none of the above is defined /bin/sh is used as default. This
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happens e.g. in the make testsuite.
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Note: - Points 3 and 4 can be turned off at compile time by adding
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-DNO_CMD_DEFAULT to the CPPFLAGS.
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- DOS support is not tested for EMX and therefore might not work.
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- The UNIXROOT environment variable is supported to find /bin/sh
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if it is not on the current drive.
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COMPILATION OF GNU MAKE FOR OS/2:
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I. ***** SPECIAL OPTIONS *****
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- At compile time you can turn off that cmd is used as default shell
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(but only /bin/sh). Simply set CPPFLAGS="-DNO_CMD_DEFAULT" and make
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will not use cmd unless you cause it to do so by setting MAKESHELL to
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cmd or by specifying SHELL=cmd in your Makefile.
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- At compile time you can set CPPFLAGS="-DNO_CHDIR2" to turn off that
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GNU make prints drive letters. This is necessary if you want to run
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the testsuite.
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II. ***** REQUIREMENTS FOR THE COMPILATION *****
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A standard Unix like build environment:
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- sh compatible shell (ksh, bash, ash, but tested only with pdksh 5.2.14
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release 2)
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If you use pdksh it is recommended to update to 5.2.14 release 2. Older
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versions may not work! You can get this version at
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http://www.math.ohio-state.edu/~ilya/software/os2/pdksh-5.2.14-bin-2.zip
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- GNU file utilities (make sure that install.exe from the file utilities
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is in front of your PATH before X:\OS2\INSTALL\INSTALL.EXE. I recommend
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also to change the filename to ginstall.exe instead of install.exe
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to avoid confusion with X:\OS2\INSTALL\INSTALL.EXE)
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- GNU shell utilities
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- GNU text utilities
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- gawk
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- grep
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- sed
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- GNU make 3.79.1 (special OS/2 patched version) or higher
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- perl 5.005 or higher
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- GNU texinfo (you can use 3.1 (gnuinfo.zip), but I recommend 4.0)
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If you want to recreate the configuration files (developers only!)
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you need also: GNU m4 1.4, autoconf 2.59, automake 1.9.6 (or compatible)
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III. ***** COMPILATION AND INSTALLATION *****
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a) ** Developers only - Everyone else should skip this section **
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To recreate the configuration files use:
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export EMXSHELL=ksh
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aclocal -I config
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automake
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autoconf
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autoheader
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b) Installation into x:/usr
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Note: Although it is possible to compile make using "./configure",
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"make", "make install" this is not recommended. In particular,
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you must ALWAYS use LDFLAGS="-Zstack 0x6000" because the default
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stack size is far to small and make will not work properly!
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Recommended environment variables and installation options:
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export ac_executable_extensions=".exe"
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export CPPFLAGS="-D__ST_MT_ERRNO__"
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export CFLAGS="-O2 -Zomf -Zmt"
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export LDFLAGS="-Zcrtdll -Zlinker /exepack:2 -Zlinker /pm:vio -Zstack 0x6000"
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export RANLIB="echo"
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./configure --prefix=x:/usr --infodir=x:/usr/share/info --mandir=x:/usr/share/man --without-included-gettext
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make AR=emxomfar
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make install
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Note: If you use gcc 2.9.x I recommend to set also LIBS="-lgcc"
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Note: You can add -DNO_CMD_DEFAULT and -DNO_CHDIR2 to CPPFLAGS.
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See section I. for details.
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IV. ***** NLS support *****
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GNU make has NLS (National Language Support), with the following
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caveats:
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a) It will only work with GNU gettext, and
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b) GNU gettext support is not included in the GNU make package.
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Therefore, if you wish to enable the internationalization features of
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GNU make you must install GNU gettext on your system before configuring
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GNU make.
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You can choose the languages to be installed. To install support for
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English, German and French only enter:
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export LINGUAS="en de fr"
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If you don't specify LINGUAS all languages are installed.
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If you don't want NLS support (English only) use the option
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--disable-nls for the configure script. Note if GNU gettext is not
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installed then NLS will not be enabled regardless of this flag.
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V. ***** Running the make test suite *****
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To run the included make test suite you have to set
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CPPFLAGS="-D__ST_MT_ERRNO__ -DNO_CMD_DEFAULT -DNO_CHDIR2"
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before you compile make. This is due to some restrictions of the
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testsuite itself. -DNO_CMD_DEFAULT causes make to use /bin/sh as default
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shell in every case. Normally you could simply set MAKESHELL="/bin/sh"
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to do this but the testsuite ignores the environment. -DNO_CHDIR2 causes
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make not to use drive letters for directory names (i.e. _chdir2() and
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_getcwd2() are NOT used). The testsuite interprets the whole output of
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make, especially statements like make[1]: Entering directory
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'C:/somewhere/make-3.79.1/tests' where the testsuite does not expect the
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drive letter. This would be interpreted as an error even if there is
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none.
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To run the testsuite do the following:
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export CPPFLAGS="-D__ST_MT_ERRNO__ -DNO_CMD_DEFAULT -DNO_CHDIR2"
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export CFLAGS="-Zomf -O2 -Zmt"
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export LDFLAGS="-Zcrtdll -s -Zlinker /exepack:2 -Zlinker /pm:vio -Zstack 0x6000"
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export RANLIB="echo"
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./configure --prefix=x:/usr --disable-nls
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make AR=emxomfar
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make check
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All tests should work fine with the exception of one of the "INCLUDE_DIRS"
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tests which will fail if your /usr/include directory is on a drive different
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from the make source tree.
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-------------------------------------------------------------------------------
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Copyright (C) 2003-2022 Free Software Foundation, Inc.
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This file is part of GNU Make.
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GNU Make is free software; you can redistribute it and/or modify it under the
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terms of the GNU General Public License as published by the Free Software
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Foundation; either version 3 of the License, or (at your option) any later
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version.
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GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
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A PARTICULAR PURPOSE. See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License along with
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this program. If not, see <http://www.gnu.org/licenses/>.
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