+2017-06-26 Gabriel F. T. Gomes <gftg@linux.vnet.ibm.com>
+ Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
+
+ * 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.
+
2017-06-26 Tulio Magno Quites Machado Filho <tuliom@linux.vnet.ibm.com>
* malloc/tst-alloc_buffer.c (test_misaligned): Cast to char
better code. As of release time, GCC 6.3 is the newest compiler
verified to work to build the GNU C Library.
+ For PowerPC 64-bits little-endian (powerpc64le), GCC 6.2 or higher
+ is required. This compiler version is the first to provide the
+ features required for building the GNU C Library with support for
+ '_Float128'.
+
For multi-arch support it is recommended to use a GCC which has
been built with support for GNU indirect functions. This ensures
that correct debugging information is generated for functions
release time, GCC 6.3 is the newest compiler verified to work to build
@theglibc{}.
+For PowerPC 64-bits little-endian (powerpc64le), GCC 6.2 or higher is
+required. This compiler version is the first to provide the features
+required for building @theglibc{} with support for @code{_Float128}.
+
For multi-arch support it is recommended to use a GCC which has been built with
support for GNU indirect functions. This ensures that correct debugging
information is generated for functions selected by IFUNC resolvers. This
--- /dev/null
+# 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
--- /dev/null
+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."])
+
+test -n "$critic_missing" && AC_MSG_ERROR([*** $critic_missing])