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GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory.
# Local configure fragment for sysdeps/powerpc/powerpc64le.
dnl Require binary128 floating point support on powerpc64le (available in
dnl GCC 6.2).
AC_CACHE_CHECK([if $CC supports binary128 floating point type],
libc_cv_compiler_powerpc64le_binary128_ok, [dnl
save_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -Werror -mfloat128"
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
__float128 a, b, c, d, e;
int i;
__float128
foobar (__float128 x)
{
a = __builtin_nansq ("0");
b = __builtin_huge_valq ();
c = __builtin_infq ();
d = __builtin_fabsq (x);
e = __builtin_nanq ("0");
i = __builtin_signbit (x);
return __builtin_copysignq (x, x);
}
]])],
[libc_cv_compiler_powerpc64le_binary128_ok=yes],
[libc_cv_compiler_powerpc64le_binary128_ok=no])
CFLAGS="$save_CFLAGS"])
AS_IF([test "$libc_cv_compiler_powerpc64le_binary128_ok" != "yes"],
[critic_missing="$critic_missing binary128 floating point type (GCC >= 6.2) is required on powerpc64le."])
dnl Require at least POWER8 on powerpc64le
OLD_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS $libc_cv_cc_submachine"
AC_CACHE_CHECK([if the target machine is at least POWER8],
libc_cv_target_power8_ok, [
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
#ifndef _ARCH_PWR8
#error invalid target architecture
#endif
]])],
[libc_cv_target_power8_ok=yes],
[libc_cv_target_power8_ok=no])])
AS_IF([test "$libc_cv_target_power8_ok" != "yes"],
[critic_missing="$critic_missing POWER8 or newer is required on powerpc64le."])
CFLAGS="$OLD_CFLAGS"
test -n "$critic_missing" && AC_MSG_ERROR([*** $critic_missing])
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