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| author | Thomas Schwinge <thomas@codesourcery.com> | 2013-12-20 09:29:29 +0100 |
|---|---|---|
| committer | Thomas Schwinge <thomas@codesourcery.com> | 2013-12-20 09:29:29 +0100 |
| commit | a65dd355fb80a05215e15ae97649de52aec885e3 (patch) | |
| tree | 81701bb0c6b648630f2bf1729a85d7f5eb49e67b /sysdeps/ieee754/ldbl-opt/configure.ac | |
| parent | 296a5732f94abe4d5699dc981e4ccfb950b48cee (diff) | |
| parent | b4578bab30f72cddd2cf38abfb39f9c8dc892249 (diff) | |
Merge branch 'baseline' into refs/top-bases/tschwinge/Roger_Whittaker
Diffstat (limited to 'sysdeps/ieee754/ldbl-opt/configure.ac')
| -rw-r--r-- | sysdeps/ieee754/ldbl-opt/configure.ac | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/sysdeps/ieee754/ldbl-opt/configure.ac b/sysdeps/ieee754/ldbl-opt/configure.ac new file mode 100644 index 0000000000..a77fadd1c4 --- /dev/null +++ b/sysdeps/ieee754/ldbl-opt/configure.ac @@ -0,0 +1,19 @@ +sinclude(./aclocal.m4)dnl Autoconf lossage +GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. +# Local configure fragment for sysdeps/ieee754/ldbl-opt/. + +AC_CACHE_CHECK(whether $CC $CFLAGS supports -mlong-double-128, + libc_cv_mlong_double_128, [dnl +save_CFLAGS="$CFLAGS" +CFLAGS="$CFLAGS -mlong-double-128" +AC_TRY_COMPILE(, [ +#ifndef __LONG_DOUBLE_128__ +# error "compiler did not predefine __LONG_DOUBLE_128__ as expected" +#endif +long double foobar (long double x) { return x; }], + libc_cv_mlong_double_128=yes, + libc_cv_mlong_double_128=no) +CFLAGS="$save_CFLAGS"]) +if test "$libc_cv_mlong_double_128" = no; then + AC_MSG_ERROR([this configuration requires -mlong-double-128 support]) +fi |