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Diffstat (limited to 'm4/clock_time.m4')
| -rw-r--r-- | m4/clock_time.m4 | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/m4/clock_time.m4 b/m4/clock_time.m4 new file mode 100644 index 000000000..e7e4e29ac --- /dev/null +++ b/m4/clock_time.m4 @@ -0,0 +1,24 @@ +# clock_time.m4 serial 2 +dnl Copyright (C) 2002, 2003 Free Software Foundation, Inc. +dnl This file is free software, distributed under the terms of the GNU +dnl General Public License. As a special exception to the GNU General +dnl Public License, this file may be distributed as part of a program +dnl that contains a configuration script generated by Autoconf, under +dnl the same distribution terms as the rest of that program. + +# Check for clock_gettime and clock_settime, and sets LIB_CLOCK_GETTIME. +AC_DEFUN([gl_CLOCK_TIME], +[ + # Solaris 2.5.1 needs -lposix4 to get the clock_gettime function. + # Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4. + + # Save and restore LIBS so e.g., -lrt, isn't added to it. Otherwise, *all* + # programs in the package would end up linked with that potentially-shared + # library, inducing unnecessary run-time overhead. + fetish_saved_libs=$LIBS + AC_SEARCH_LIBS(clock_gettime, [rt posix4], + [LIB_CLOCK_GETTIME=$ac_cv_search_clock_gettime]) + AC_SUBST(LIB_CLOCK_GETTIME) + AC_CHECK_FUNCS(clock_gettime clock_settime) + LIBS=$fetish_saved_libs +]) |