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Enable isinf/isnan checks for all targets

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PR libstdc++/48891
	* acinclude.m4 (GLIBCXX_CHECK_MATH11_PROTO): Enable isinf and isnan
	checks for all targets except *-*-solaris2.* and ensure we find the
	libc math.h header not our own.
	* configure: Regenerate.

From-SVN: r233214
This commit is contained in:
Jonathan Wakely 2016-02-08 15:22:32 +00:00 • committed by Jonathan Wakely
parent 5317b1be7e
commit cc07da33ae
3 changed files with 18 additions and 8 deletions
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8
libstdc++-v3/ChangeLog
View file

@ -1,3 +1,11 @@
2016-02-08 Jonathan Wakely <jwakely@redhat.com>
PR libstdc++/48891
* acinclude.m4 (GLIBCXX_CHECK_MATH11_PROTO): Enable isinf and isnan
checks for all targets except *-*-solaris2.* and ensure we find the
libc math.h header not our own.
* configure: Regenerate.
2016-02-05 Dominik Vogt <vogt@linux.vnet.ibm.com>
* config/abi/post/s390x-linux-gnu/32/baseline_symbols.txt (FUNC):

9
libstdc++-v3/acinclude.m4
View file

@ -2215,7 +2215,7 @@ AC_DEFUN([GLIBCXX_CHECK_MATH11_PROTO], [
fi
AC_MSG_RESULT([$glibcxx_cv_math11_overload])
;;
*-*-*gnu* | *-*-aix* | *-*-hpux*)
*)
# If <math.h> defines the obsolete isinf(double) and isnan(double)
# functions (instead of or as well as the C99 generic macros) then we
# can't define std::isinf(double) and std::isnan(double) in <cmath>
@ -2223,12 +2223,13 @@ AC_DEFUN([GLIBCXX_CHECK_MATH11_PROTO], [
AC_MSG_CHECKING([for obsolete isinf function in <math.h>])
AC_CACHE_VAL(glibcxx_cv_obsolete_isinf, [
AC_COMPILE_IFELSE([AC_LANG_SOURCE(
[#include <math.h>
[#define _GLIBCXX_INCLUDE_NEXT_C_HEADERS
#include <math.h>
#undef isinf
namespace std {
using ::isinf;
bool isinf(float);
bool isinf(long double);
constexpr bool isinf(float);
constexpr bool isinf(long double);
}
using std::isinf;
bool b = isinf(0.0);

9
libstdc++-v3/configure vendored
View file

@ -18266,7 +18266,7 @@ fi
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $glibcxx_cv_math11_overload" >&5
$as_echo "$glibcxx_cv_math11_overload" >&6; }
;;
*-*-*gnu* | *-*-aix* | *-*-hpux*)
*)
# If <math.h> defines the obsolete isinf(double) and isnan(double)
# functions (instead of or as well as the C99 generic macros) then we
# can't define std::isinf(double) and std::isnan(double) in <cmath>
@ -18279,12 +18279,13 @@ else
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
/* end confdefs.h. */
#include <math.h>
#define _GLIBCXX_INCLUDE_NEXT_C_HEADERS
#include <math.h>
#undef isinf
namespace std {
using ::isinf;
bool isinf(float);
bool isinf(long double);
constexpr bool isinf(float);
constexpr bool isinf(long double);
}
using std::isinf;
bool b = isinf(0.0);