diff options
| -rw-r--r-- | ChangeLog | 10 | ||||
| -rw-r--r-- | INSTALL | 5 | ||||
| -rw-r--r-- | manual/install.texi | 4 | ||||
| -rw-r--r-- | sysdeps/powerpc/powerpc64le/configure | 45 | ||||
| -rw-r--r-- | sysdeps/powerpc/powerpc64le/configure.ac | 32 |
5 files changed, 96 insertions, 0 deletions
diff --git a/ChangeLog b/ChangeLog index 9e19f62d9d..e0968afc8b 100644 --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,13 @@ +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 diff --git a/INSTALL b/INSTALL index 71af35b1eb..4e05e9922b 100644 --- a/INSTALL +++ b/INSTALL @@ -428,6 +428,11 @@ build the GNU C Library: 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 diff --git a/manual/install.texi b/manual/install.texi index 65174a8b2e..ff5661a4fd 100644 --- a/manual/install.texi +++ b/manual/install.texi @@ -475,6 +475,10 @@ the newest version of the compiler that is known to work for building 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 diff --git a/sysdeps/powerpc/powerpc64le/configure b/sysdeps/powerpc/powerpc64le/configure new file mode 100644 index 0000000000..78208d2eda --- /dev/null +++ b/sysdeps/powerpc/powerpc64le/configure @@ -0,0 +1,45 @@ +# 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 diff --git a/sysdeps/powerpc/powerpc64le/configure.ac b/sysdeps/powerpc/powerpc64le/configure.ac new file mode 100644 index 0000000000..e88e224ae1 --- /dev/null +++ b/sysdeps/powerpc/powerpc64le/configure.ac @@ -0,0 +1,32 @@ +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]) |