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| author | Jim Meyering <jim@meyering.net> | 1996-12-21 01:50:50 +0000 |
|---|---|---|
| committer | Jim Meyering <jim@meyering.net> | 1996-12-21 01:50:50 +0000 |
| commit | 5fc47138b1f01f5ec8d449585bd19abea4da7960 (patch) | |
| tree | 9c61a5687ee886cac714ed21614b3aa44fcb656a /m4/getgroups.m4 | |
| parent | 4a2b289e7c27da90ba0ae5300d13eb72a048c51f (diff) | |
| download | coreutils-5fc47138b1f01f5ec8d449585bd19abea4da7960.tar.xz | |
broken out of ../acinclude.m4
Diffstat (limited to 'm4/getgroups.m4')
| -rw-r--r-- | m4/getgroups.m4 | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/m4/getgroups.m4 b/m4/getgroups.m4 new file mode 100644 index 000000000..7b9416226 --- /dev/null +++ b/m4/getgroups.m4 @@ -0,0 +1,31 @@ +#serial 1 + +dnl From Jim Meyering. +dnl If you use this macro in a package, you should +dnl add the following two lines to acconfig.h: +dnl /* Define to rpl_getgroups if the replacement function should be used. */ +dnl #undef getgroups +dnl + +AC_DEFUN(jm_FUNC_GETGROUPS, +[AC_REQUIRE([AC_TYPE_GETGROUPS])dnl + AC_REQUIRE([AC_TYPE_SIZE_T])dnl + AC_CACHE_CHECK([for working getgroups], jm_cv_func_working_getgroups, + [AC_TRY_RUN([ + int + main () + { + /* On Ultrix 4.3, getgroups (0, 0) always fails. */ + exit (getgroups (0, 0) == -1 ? 1 : 0); + } + ], + jm_cv_func_working_getgroups=yes, + jm_cv_func_working_getgroups=no, + dnl When crosscompiling, assume getgroups is broken. + jm_cv_func_working_getgroups=no) + ]) + if test $jm_cv_func_working_getgroups = no; then + LIBOBJS="$LIBOBJS getgroups.o" + AC_DEFINE_UNQUOTED(getgroups, rpl_getgroups) + fi +]) |