| GLIBC_PROVIDES dnl See aclocal.m4 in the top level source directory. |
| # Local configure fragment for sysdeps/powerpc/powerpc64le. |
| |
| if test "$with_clang" = no; then |
| |
| 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."]) |
| |
| fi # clang |
| |
| 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]) |
