diff options
Diffstat (limited to 'libc/configure.in')
| -rw-r--r-- | libc/configure.in | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/libc/configure.in b/libc/configure.in index e6cf65a87..1a1921c77 100644 --- a/libc/configure.in +++ b/libc/configure.in @@ -254,6 +254,35 @@ AC_ARG_ENABLE([all-warnings], []) AC_SUBST(all_warnings) +AC_ARG_WITH([decimal-float], + AC_HELP_STRING([--decimal-float], + [enable support for decimal floating point.]), + [usedfp=$withval], + [usedfp=yes]) +if test "$usedfp" != no; then +# Check to make sure the compiler supports decimal floating point. +AC_CACHE_CHECK(for decimal-float-support in compiler, + libc_cv_cc_with_decimal_float, [ + cat > conftest.c <<EOF +int main (void) { _Decimal32 d32; d32 = 1.0D; return 0; } +EOF + if ${CC-cc} $CFLAGS $CPPFLAGS $LDFLAGS -static -o conftest \ + conftest.c -v 2>&1 >/dev/null | grep -q " --enable-decimal-float "; +then + libc_cv_cc_with_decimal_float=yes + else + libc_cv_cc_with_decimal_float=no + fi + rm -f conftest*]) +AC_SUBST(libc_cv_cc_with_decimal_float) +if test $libc_cv_cc_with_decimal_float = yes; then + cat >> confdefs.h <<\EOF +#define __STDC_DEC_FP__ 200704L +EOF +fi +fi + + AC_CANONICAL_HOST # The way shlib-versions is used to generate soversions.mk uses a |