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build: Fix check for clock_gettime() within librt

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The check was always setting the libraries to link to include -lrt,
as the success case includes the builtin one. Handle the various
values.
This commit is contained in:
Guillem Jover 2019-08-06 23:11:50 +02:00
parent 7cfa2d4530
commit 73aea4f808
1 changed files with 5 additions and 1 deletions
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6
configure.ac
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@ -48,7 +48,11 @@ AS_CASE([$host_os],
[*-gnu*], [
# In old glibc versions (< 2.17) clock_gettime() is in librt.
saved_LIBS="$LIBS"
AC_SEARCH_LIBS([clock_gettime], [rt], [CLOCK_GETTIME_LIBS="-lrt"])
AC_SEARCH_LIBS([clock_gettime], [rt], [
AS_IF([test "x$ac_cv_search_clock_gettime" != "xnone required"], [
CLOCK_GETTIME_LIBS="$ac_cv_search_clock_gettime"
])
])
AC_SUBST([CLOCK_GETTIME_LIBS])
LIBS="$saved_LIBS"
],