mirror of
https://sourceware.org/git/glibc.git
synced 2024-11-16 10:00:12 +00:00
4efe3ce400
On powerpc64le, support for float128 will be enabled, which requires some compiler features to be present. This patch adds a configure test to check for such features, which are provided for powerpc64le since GCC 6.2. Tested for powerpc64 and powerpc64le. * INSTALL: Regenerate. * manual/install.texi (Recommended Tools for Compilation): Mention the powerpc64le-specific requirement in the manual. * sysdeps/powerpc/powerpc64le/configure.ac: New file with checks for the compiler features required for building float128. * sysdeps/powerpc/powerpc64le/configure: New, auto-generated file.
46 lines
1.4 KiB
Plaintext
46 lines
1.4 KiB
Plaintext
# This file is generated from configure.ac by Autoconf. DO NOT EDIT!
|
|
# Local configure fragment for sysdeps/powerpc/powerpc64le.
|
|
|
|
|
|
{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $CC supports binary128 floating point type" >&5
|
|
$as_echo_n "checking if $CC supports binary128 floating point type... " >&6; }
|
|
if ${libc_cv_compiler_powerpc64le_binary128_ok+:} false; then :
|
|
$as_echo_n "(cached) " >&6
|
|
else
|
|
save_CFLAGS="$CFLAGS"
|
|
CFLAGS="$CFLAGS -Werror -mfloat128"
|
|
cat confdefs.h - <<_ACEOF >conftest.$ac_ext
|
|
/* end confdefs.h. */
|
|
|
|
__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);
|
|
}
|
|
|
|
_ACEOF
|
|
if ac_fn_c_try_compile "$LINENO"; then :
|
|
libc_cv_compiler_powerpc64le_binary128_ok=yes
|
|
else
|
|
libc_cv_compiler_powerpc64le_binary128_ok=no
|
|
fi
|
|
rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
|
|
CFLAGS="$save_CFLAGS"
|
|
fi
|
|
{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libc_cv_compiler_powerpc64le_binary128_ok" >&5
|
|
$as_echo "$libc_cv_compiler_powerpc64le_binary128_ok" >&6; }
|
|
if test "$libc_cv_compiler_powerpc64le_binary128_ok" != "yes"; then :
|
|
critic_missing="$critic_missing binary128 floating point type (GCC >= 6.2) is required on powerpc64le."
|
|
fi
|
|
|
|
test -n "$critic_missing" && as_fn_error $? "*** $critic_missing" "$LINENO" 5
|