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| author | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 17:39:29 +0000 |
|---|---|---|
| committer | Daniel Baumann <daniel.baumann@progress-linux.org> | 2024-04-27 17:39:29 +0000 |
| commit | 8ffec2a3aba6f114784e11f89ef1d57a096ae540 (patch) | |
| tree | ccebcbad06203e8241a8e7249f8e6c478a3682ea /m4/timer_time.m4 | |
| parent | Initial commit. (diff) | |
| download | coreutils-8ffec2a3aba6f114784e11f89ef1d57a096ae540.tar.xz coreutils-8ffec2a3aba6f114784e11f89ef1d57a096ae540.zip | |
Adding upstream version 8.32.upstream/8.32upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to 'm4/timer_time.m4')
| -rw-r--r-- | m4/timer_time.m4 | 44 |
1 files changed, 44 insertions, 0 deletions
diff --git a/m4/timer_time.m4 b/m4/timer_time.m4 new file mode 100644 index 0000000..fdb288d --- /dev/null +++ b/m4/timer_time.m4 @@ -0,0 +1,44 @@ +# timer_time.m4 serial 4 +dnl Copyright (C) 2011-2020 Free Software Foundation, Inc. +dnl This file is free software; the Free Software Foundation +dnl gives unlimited permission to copy and/or distribute it, +dnl with or without modifications, as long as this notice is preserved. + +# Check for timer_settime, and set LIB_TIMER_TIME. + +AC_DEFUN([gl_TIMER_TIME], +[ + dnl Based on clock_time.m4. See details there. + + AC_REQUIRE([gl_USE_SYSTEM_EXTENSIONS]) + + dnl Test whether the gnulib module 'threadlib' is in use. + dnl Some packages like Emacs use --avoid=threadlib. + dnl Write the symbol in such a way that it does not cause 'aclocal' to pick + dnl the threadlib.m4 file that is installed in $PREFIX/share/aclocal/. + m4_ifdef([gl_][PTHREADLIB], [AC_REQUIRE([gl_][PTHREADLIB])]) + + LIB_TIMER_TIME= + AC_SUBST([LIB_TIMER_TIME]) + gl_saved_libs=$LIBS + AC_SEARCH_LIBS([timer_settime], [rt posix4], + [test "$ac_cv_search_timer_settime" = "none required" || + LIB_TIMER_TIME=$ac_cv_search_timer_settime]) + m4_ifdef([gl_][PTHREADLIB], + [dnl GLIBC uses threads to emulate posix timers when kernel support + dnl is not available (like Linux < 2.6 or when used with kFreeBSD) + dnl Now the pthread lib is linked automatically in the normal case, + dnl but when linking statically, it needs to be explicitly specified. + AC_EGREP_CPP([Thread], + [#include <features.h> + #ifdef __GNU_LIBRARY__ + #if ((__GLIBC__ == 2 && __GLIBC_MINOR__ >= 2) || (__GLIBC__ > 2)) \ + && !(__UCLIBC__ && __HAS_NO_THREADS__) + Thread emulation available + #endif + #endif + ], + [LIB_TIMER_TIME="$LIB_TIMER_TIME $LIBPMULTITHREAD"])]) + AC_CHECK_FUNCS([timer_settime]) + LIBS=$gl_saved_libs +]) |