forked from brl/citadel
126 lines
3.7 KiB
Diff
126 lines
3.7 KiB
Diff
From 5a47d404ea29e2547269e3ddf38754462d93f903 Mon Sep 17 00:00:00 2001
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From: Khem Raj <raj.khem@gmail.com>
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Date: Fri, 29 Apr 2016 20:03:28 +0000
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Subject: [PATCH 45/46] libgcc: Add knob to use ldbl-128 on ppc
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musl does not support ldbl 128 so we can not assume
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that linux as a whole supports ldbl-128 bits, instead
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act upon configure option passed to gcc and assume no
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on musl and yes otherwise if no option is passed since
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default behaviour is to assume ldbl128 it does not
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change the defaults
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Signed-off-by: Khem Raj <raj.khem@gmail.com>
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---
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Upstream-Status: Pending
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libgcc/Makefile.in | 1 +
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libgcc/config/rs6000/t-linux | 5 ++++-
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libgcc/configure | 18 ++++++++++++++++++
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libgcc/configure.ac | 12 ++++++++++++
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4 files changed, 35 insertions(+), 1 deletion(-)
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mode change 100644 => 100755 libgcc/configure
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diff --git a/libgcc/Makefile.in b/libgcc/Makefile.in
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index f09b39b..296cf0f 100644
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--- a/libgcc/Makefile.in
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+++ b/libgcc/Makefile.in
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@@ -43,6 +43,7 @@ enable_vtable_verify = @enable_vtable_verify@
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enable_decimal_float = @enable_decimal_float@
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fixed_point = @fixed_point@
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with_aix_soname = @with_aix_soname@
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+with_ldbl128 = @with_ldbl128@
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host_noncanonical = @host_noncanonical@
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real_host_noncanonical = @real_host_noncanonical@
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diff --git a/libgcc/config/rs6000/t-linux b/libgcc/config/rs6000/t-linux
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index 4f6d4c4..c50dd94 100644
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--- a/libgcc/config/rs6000/t-linux
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+++ b/libgcc/config/rs6000/t-linux
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@@ -1,3 +1,6 @@
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SHLIB_MAPFILES += $(srcdir)/config/rs6000/libgcc-glibc.ver
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-HOST_LIBGCC2_CFLAGS += -mlong-double-128 -mno-minimal-toc
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+ifeq ($(with_ldbl128),yes)
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+HOST_LIBGCC2_CFLAGS += -mlong-double-128
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+endif
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+HOST_LIBGCC2_CFLAGS += -mno-minimal-toc
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diff --git a/libgcc/configure b/libgcc/configure
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old mode 100644
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new mode 100755
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index e7d6c75..e9a9019
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--- a/libgcc/configure
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+++ b/libgcc/configure
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@@ -614,6 +614,7 @@ build_vendor
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build_cpu
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build
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with_aix_soname
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+with_ldbl128
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enable_vtable_verify
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enable_shared
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libgcc_topdir
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@@ -663,6 +664,7 @@ with_cross_host
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with_ld
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enable_shared
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enable_vtable_verify
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+with_long_double_128
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with_aix_soname
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enable_version_specific_runtime_libs
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with_slibdir
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@@ -1319,6 +1321,7 @@ Optional Packages:
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--with-target-subdir=SUBDIR Configuring in a subdirectory for target
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--with-cross-host=HOST Configuring with a cross compiler
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--with-ld arrange to use the specified ld (full pathname)
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+ --with-long-double-128 use 128-bit long double by default
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--with-aix-soname=aix|svr4|both
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shared library versioning (aka "SONAME") variant to
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provide on AIX
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@@ -2201,6 +2204,21 @@ fi
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+# Check whether --with-long-double-128 was given.
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+if test "${with_long_double_128+set}" = set; then :
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+ withval=$with_long_double_128; with_ldbl128="$with_long_double_128"
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+else
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+ case "${host}" in
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+ power*-*-musl*)
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+ with_ldbl128="no";;
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+ *) with_ldbl128="yes";;
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+ esac
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+
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+fi
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+
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+
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+
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+
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# Check whether --with-aix-soname was given.
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if test "${with_aix_soname+set}" = set; then :
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withval=$with_aix_soname; case "${host}:${enable_shared}" in
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diff --git a/libgcc/configure.ac b/libgcc/configure.ac
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index 269997f..81dc3ba 100644
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--- a/libgcc/configure.ac
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+++ b/libgcc/configure.ac
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@@ -77,6 +77,18 @@ AC_ARG_ENABLE(vtable-verify,
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[enable_vtable_verify=no])
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AC_SUBST(enable_vtable_verify)
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+AC_ARG_WITH(long-double-128,
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+[AS_HELP_STRING([--with-long-double-128],
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+ [use 128-bit long double by default])],
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+ with_ldbl128="$with_long_double_128",
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+[case "${host}" in
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+ power*-*-musl*)
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+ with_ldbl128="no";;
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+ *) with_ldbl128="yes";;
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+ esac
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+])
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+AC_SUBST(with_ldbl128)
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+
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AC_ARG_WITH(aix-soname,
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[AS_HELP_STRING([--with-aix-soname=aix|svr4|both],
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[shared library versioning (aka "SONAME") variant to provide on AIX])],
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--
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2.8.2
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