mirror of
https://github.com/c64scene-ar/llvm-6502.git
synced 2024-07-05 13:29:22 +00:00
c8e41c5917
git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@160621 91177308-0d34-0410-b5e6-96231b3b80d8
21 lines
658 B
Plaintext
21 lines
658 B
Plaintext
#
|
|
# This function determins if the HUGE_VAL macro is compilable with the
|
|
# -pedantic switch or not. XCode < 2.4.1 doesn't get it right.
|
|
#
|
|
AC_DEFUN([AC_HUGE_VAL_CHECK],[
|
|
AC_CACHE_CHECK([for HUGE_VAL sanity], [ac_cv_huge_val_sanity],[
|
|
AC_LANG_PUSH([C++])
|
|
ac_save_CXXFLAGS=$CXXFLAGS
|
|
CXXFLAGS="$CXXFLAGS -pedantic"
|
|
AC_RUN_IFELSE(
|
|
AC_LANG_PROGRAM(
|
|
[#include <math.h>],
|
|
[double x = HUGE_VAL; return x != x; ]),
|
|
[ac_cv_huge_val_sanity=yes],[ac_cv_huge_val_sanity=no],
|
|
[ac_cv_huge_val_sanity=yes])
|
|
CXXFLAGS=$ac_save_CXXFLAGS
|
|
AC_LANG_POP([C++])
|
|
])
|
|
AC_SUBST(HUGE_VAL_SANITY,$ac_cv_huge_val_sanity)
|
|
])
|