1 Port of GNU make to OS/2.
3 Features of GNU make that do not work under OS/2:
5 - dynamic load balancing
8 Special features of the OS/2 version:
10 Due to the fact that some people might want to use sh syntax in
11 Makefiles while others might want to use OS/2's native shell cmd.exe,
12 GNU make supports both shell types. The following list defines the order
13 that is used to determine the shell:
15 1. The shell specified by the environment variable MAKESHELL.
16 2. The shell specified by the SHELL variable within a Makefile. Like
17 Unix, SHELL is NOT taken from the environment.
18 3. The shell specified by the COMSPEC environment variable.
19 4. The shell specified by the OS2_SHELL environment variable.
20 5. If none of the above is defined /bin/sh is used as default. This
21 happens e.g. in the make testsuite.
23 Note: - Points 3 and 4 can be turned off at compile time by adding
24 -DNO_CMD_DEFAULT to the CPPFLAGS.
25 - DOS support is not tested for EMX and therefore might not work.
26 - The UNIXROOT environment variable is supported to find /bin/sh
27 if it is not on the current drive.
30 COMPILATION OF GNU MAKE FOR OS/2:
32 I. ***** SPECIAL OPTIONS *****
34 - At compile time you can turn off that cmd is used as default shell
35 (but only /bin/sh). Simply set CPPFLAGS="-DNO_CMD_DEFAULT" and make
36 will not use cmd unless you cause it to do so by setting MAKESHELL to
37 cmd or by specifying SHELL=cmd in your Makefile.
39 - At compile time you can set CPPFLAGS="-DNO_CHDIR2" to turn off that
40 GNU make prints drive letters. This is necessary if you want to run
44 II. ***** REQUIREMENTS FOR THE COMPILATION *****
46 A standard Unix like build environment:
48 - sh compatible shell (ksh, bash, ash, but tested only with pdksh 5.2.14
50 If you use pdksh it is recommended to update to 5.2.14 release 2. Older
51 versions may not work! You can get this version at
52 http://www.math.ohio-state.edu/~ilya/software/os2/pdksh-5.2.14-bin-2.zip
53 - GNU file utilities (make sure that install.exe from the file utilities
54 is in front of your PATH before X:\OS2\INSTALL\INSTALL.EXE. I recommend
55 also to change the filename to ginstall.exe instead of install.exe
56 to avoid confusion with X:\OS2\INSTALL\INSTALL.EXE)
62 - GNU make 3.79.1 (special OS/2 patched version) or higher
63 - perl 5.005 or higher
64 - GNU texinfo (you can use 3.1 (gnuinfo.zip), but I recommend 4.0)
66 If you want to recreate the configuration files (developers only!)
67 you need also: GNU m4 1.4, autoconf 2.59, automake 1.9.6 (or compatible)
70 III. ***** COMPILATION AND INSTALLATION *****
72 a) ** Developers only - Everyone else should skip this section **
73 To recreate the configuration files use:
82 b) Installation into x:/usr
84 Note: Although it is possible to compile make using "./configure",
85 "make", "make install" this is not recommended. In particular,
86 you must ALWAYS use LDFLAGS="-Zstack 0x6000" because the default
87 stack size is far to small and make will not work properly!
89 Recommended environment variables and installation options:
91 export ac_executable_extensions=".exe"
92 export CPPFLAGS="-D__ST_MT_ERRNO__"
93 export CFLAGS="-O2 -Zomf -Zmt"
94 export LDFLAGS="-Zcrtdll -Zlinker /exepack:2 -Zlinker /pm:vio -Zstack 0x6000"
96 ./configure --prefix=x:/usr --infodir=x:/usr/share/info --mandir=x:/usr/share/man --without-included-gettext
100 Note: If you use gcc 2.9.x I recommend to set also LIBS="-lgcc"
102 Note: You can add -DNO_CMD_DEFAULT and -DNO_CHDIR2 to CPPFLAGS.
103 See section I. for details.
106 IV. ***** NLS support *****
108 GNU make has NLS (National Language Support), with the following
111 a) It will only work with GNU gettext, and
112 b) GNU gettext support is not included in the GNU make package.
114 Therefore, if you wish to enable the internationalization features of
115 GNU make you must install GNU gettext on your system before configuring
118 You can choose the languages to be installed. To install support for
119 English, German and French only enter:
121 export LINGUAS="en de fr"
123 If you don't specify LINGUAS all languages are installed.
125 If you don't want NLS support (English only) use the option
126 --disable-nls for the configure script. Note if GNU gettext is not
127 installed then NLS will not be enabled regardless of this flag.
130 V. ***** Running the make test suite *****
132 To run the included make test suite you have to set
134 CPPFLAGS="-D__ST_MT_ERRNO__ -DNO_CMD_DEFAULT -DNO_CHDIR2"
136 before you compile make. This is due to some restrictions of the
137 testsuite itself. -DNO_CMD_DEFAULT causes make to use /bin/sh as default
138 shell in every case. Normally you could simply set MAKESHELL="/bin/sh"
139 to do this but the testsuite ignores the environment. -DNO_CHDIR2 causes
140 make not to use drive letters for directory names (i.e. _chdir2() and
141 _getcwd2() are NOT used). The testsuite interpretes the whole output of
142 make, especially statements like make[1]: Entering directory
143 `C:/somewhere/make-3.79.1/tests' where the testsuite does not expect the
144 drive letter. This would be interpreted as an error even if there is
147 To run the testsuite do the following:
149 export CPPFLAGS="-D__ST_MT_ERRNO__ -DNO_CMD_DEFAULT -DNO_CHDIR2"
150 export CFLAGS="-Zomf -O2 -Zmt"
151 export LDFLAGS="-Zcrtdll -s -Zlinker /exepack:2 -Zlinker /pm:vio -Zstack 0x6000"
153 ./configure --prefix=x:/usr --disable-nls
157 All tests should work fine with the exception of one of the "INCLUDE_DIRS"
158 tests which will fail if your /usr/include directory is on a drive different
159 from the make source tree.
162 -------------------------------------------------------------------------------
163 Copyright (C) 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010 Free Software
165 This file is part of GNU Make.
167 GNU Make is free software; you can redistribute it and/or modify it under the
168 terms of the GNU General Public License as published by the Free Software
169 Foundation; either version 3 of the License, or (at your option) any later
172 GNU Make is distributed in the hope that it will be useful, but WITHOUT ANY
173 WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR
174 A PARTICULAR PURPOSE. See the GNU General Public License for more details.
176 You should have received a copy of the GNU General Public License along with
177 this program. If not, see <http://www.gnu.org/licenses/>.