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(jm_MACROS): Save and restore LIBS around AC_SEARCH_LIBS call for clock_gettime.

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(LIB_CLOCK_GETTIME): Set and AC_SUBST.
This commit is contained in:
Jim Meyering
2000-05-05 16:33:26 +00:00
parent 98e69d378e
commit 554b19b9d1
1 changed files with 11 additions and 3 deletions
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m4/jm-macros.m4
+11 -3
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@@ -1,4 +1,4 @@
#serial 16
#serial 17
dnl Misc type-related macros for fileutils, sh-utils, textutils.
@@ -128,8 +128,16 @@ AC_DEFUN(jm_MACROS,
# used by sleep and shred
# Solaris 2.5.1 needs -lposix4 to get the clock_gettime function.
# Solaris 7 prefers the library name -lrt to the obsolescent name -lposix4.
AC_SEARCH_LIBS(clock_gettime, [rt posix4])
AC_CHECK_FUNCS(clock_gettime)
# 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)
LIBS=$fetish_saved_libs
AC_CHECK_FUNCS(gettimeofday)
AC_REQUIRE([AC_FUNC_CLOSEDIR_VOID])