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configure.ac: check for uselocale function only on Linux platforms

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On Apple this seems to fail the `test_locale` test,
which would imply that the `uselocale` function
does not behave as expected.

Signed-off-by: Alexandru Ardelean <ardeleanalex@gmail.com>
This commit is contained in:
Alexandru Ardelean
2017-07-13 09:33:39 +03:00
parent 7b9432d564
commit 85f57859fd
1 changed files with 11 additions and 1 deletions
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12
configure.ac
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@@ -7,6 +7,8 @@ AM_INIT_AUTOMAKE
AC_PROG_MAKE_SET
AC_CANONICAL_HOST
AC_ARG_ENABLE(rdrand,
AS_HELP_STRING([--enable-rdrand],
[Enable RDRAND Hardware RNG Hash Seed generation on supported x86/x64 platforms.]),
@@ -57,7 +59,7 @@ AS_IF([test "x$ac_cv___thread" != xno],
AC_FUNC_VPRINTF
AC_FUNC_MEMCMP
AC_CHECK_FUNCS([realloc])
AC_CHECK_FUNCS(strcasecmp strdup strerror snprintf vsnprintf vasprintf open vsyslog strncasecmp setlocale uselocale)
AC_CHECK_FUNCS(strcasecmp strdup strerror snprintf vsnprintf vasprintf open vsyslog strncasecmp setlocale)
AC_CHECK_DECLS([INFINITY], [], [], [[#include <math.h>]])
AC_CHECK_DECLS([nan], [], [], [[#include <math.h>]])
AC_CHECK_DECLS([isnan], [], [], [[#include <math.h>]])
@@ -65,6 +67,14 @@ AC_CHECK_DECLS([isinf], [], [], [[#include <math.h>]])
AC_CHECK_DECLS([_isnan], [], [], [[#include <float.h>]])
AC_CHECK_DECLS([_finite], [], [], [[#include <float.h>]])
case "${host_os}" in
linux*)
AC_CHECK_FUNCS([uselocale])
;;
*) # Nothing
;;
esac
if test "$ac_cv_have_decl_isnan" = "yes" ; then
AC_TRY_LINK([#include <math.h>], [float f = 0.0; return isnan(f)], [], [LIBS="$LIBS -lm"])
fi