diff options
Diffstat (limited to 'sysdeps/unix/sysv/linux/powerpc/configure.ac')
| -rw-r--r-- | sysdeps/unix/sysv/linux/powerpc/configure.ac | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/powerpc/configure.ac b/sysdeps/unix/sysv/linux/powerpc/configure.ac new file mode 100644 index 0000000000..1768ab1f99 --- /dev/null +++ b/sysdeps/unix/sysv/linux/powerpc/configure.ac @@ -0,0 +1,37 @@ +sinclude(./aclocal.m4)dnl Autoconf lossage +GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. +# Local configure fragment for sysdeps/unix/sysv/linux/powerpc/. + +AC_CACHE_CHECK(whether $CC $CFLAGS -mlong-double-128 uses IBM extended format, + libc_cv_mlong_double_128ibm, [dnl +save_CFLAGS="$CFLAGS" +CFLAGS="$CFLAGS -mlong-double-128" +AC_TRY_COMPILE([#include <float.h>], [ +#if LDBL_MANT_DIG != 106 +# error "compiler doesn't implement IBM extended format of long double" +#endif +long double foobar (long double x) { return x; }], + libc_cv_mlong_double_128ibm=yes, + libc_cv_mlong_double_128ibm=no) +CFLAGS="$save_CFLAGS"]) + +if test "$libc_cv_mlong_double_128ibm" = no; then + AC_CACHE_CHECK(whether $CC $CFLAGS supports -mabi=ibmlongdouble, + libc_cv_mabi_ibmlongdouble, [dnl + save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS -mlong-double-128 -mabi=ibmlongdouble" + AC_TRY_COMPILE([#include <float.h>], [ +#if LDBL_MANT_DIG != 106 +# error "compiler doesn't implement IBM extended format of long double" +#endif +long double foobar (long double x) { return x; }], + libc_cv_mabi_ibmlongdouble=yes, + libc_cv_mabi_ibmlongdouble=no) + CFLAGS="$save_CFLAGS"]) + + if test "$libc_cv_mabi_ibmlongdouble" = yes; then + CFLAGS="$CFLAGS -mabi=ibmlongdouble" + else + AC_MSG_ERROR([this configuration requires -mlong-double-128 IBM extended format support]) + fi +fi |