Disable .gnu.attributes tags in compatibility-ldbl.o

compatibility-ldbl.o is compiled with -mlong-double-64.  When
long double .gnu.attributes tags are checked by the linker, it
complains about the mismatch between this file and others in
libstdc++.

	* configure.ac (LONG_DOUBLE_COMPAT_FLAGS): New ACSUBST.
	* src/Makefile.am (compatibility-ldbl.o, compatibility-ldbl.lo):
	Use LONG_DOUBLE_COMPAT_FLAGS.
	* Makefile.in: Regenerate.
	* configure: Regenerate.
	* doc/Makefile.in: Regenerate.
	* include/Makefile.in: Regenerate.
	* libsupc++/Makefile.in: Regenerate.
	* po/Makefile.in: Regenerate.
	* python/Makefile.in: Regenerate.
	* src/Makefile.in: Regenerate.
	* src/c++11/Makefile.in: Regenerate.
	* src/c++98/Makefile.in: Regenerate.
	* src/filesystem/Makefile.in: Regenerate.
	* testsuite/Makefile.in: Regenerate.

From-SVN: r240602

15 files changed, 55 insertions, 13 deletions

diff --git a/libstdc++-v3/ChangeLog b/libstdc++-v3/ChangeLog
index ee5a63f..d0e2980 100644
--- a/libstdc++-v3/ChangeLog
+++ b/libstdc++-v3/ChangeLog
@@ -1,3 +1,21 @@
+2016-09-29  Alan Modra  <amodra@gmail.com>
+
+	* configure.ac (LONG_DOUBLE_COMPAT_FLAGS): New ACSUBST.
+	* src/Makefile.am (compatibility-ldbl.o, compatibility-ldbl.lo):
+	Use LONG_DOUBLE_COMPAT_FLAGS.
+	* Makefile.in: Regenerate.
+	* configure: Regenerate.
+	* doc/Makefile.in: Regenerate.
+	* include/Makefile.in: Regenerate.
+	* libsupc++/Makefile.in: Regenerate.
+	* po/Makefile.in: Regenerate.
+	* python/Makefile.in: Regenerate.
+	* src/Makefile.in: Regenerate.
+	* src/c++11/Makefile.in: Regenerate.
+	* src/c++98/Makefile.in: Regenerate.
+	* src/filesystem/Makefile.in: Regenerate.
+	* testsuite/Makefile.in: Regenerate.
+
 2016-09-28  Jonathan Wakely  <jwakely@redhat.com>
 
 	* include/std/chrono (system_clock): Fix typo in comment.
diff --git a/libstdc++-v3/Makefile.in b/libstdc++-v3/Makefile.in
index 3159b71..c29c09c 100644
--- a/libstdc++-v3/Makefile.in
+++ b/libstdc++-v3/Makefile.in
@@ -191,6 +191,7 @@ LIBS = @LIBS@
 LIBTOOL = @LIBTOOL@
 LIPO = @LIPO@
 LN_S = @LN_S@
+LONG_DOUBLE_COMPAT_FLAGS = @LONG_DOUBLE_COMPAT_FLAGS@
 LTLIBICONV = @LTLIBICONV@
 LTLIBOBJS = @LTLIBOBJS@
 MAINT = @MAINT@
diff --git a/libstdc++-v3/configure b/libstdc++-v3/configure
index 04612bd..f7b424b 100755
--- a/libstdc++-v3/configure
+++ b/libstdc++-v3/configure
@@ -645,6 +645,7 @@ baseline_dir
 HWCAP_FLAGS
 GLIBCXX_LDBL_COMPAT_FALSE
 GLIBCXX_LDBL_COMPAT_TRUE
+LONG_DOUBLE_COMPAT_FLAGS
 ENABLE_CXX11_ABI_FALSE
 ENABLE_CXX11_ABI_TRUE
 glibcxx_cxx98_abi
@@ -11596,7 +11597,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11599 "configure"
+#line 11600 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11702,7 +11703,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11705 "configure"
+#line 11706 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -15388,7 +15389,7 @@ $as_echo "$glibcxx_cv_atomic_long_long" >&6; }
   # Fake what AC_TRY_COMPILE does.
 
     cat > conftest.$ac_ext << EOF
-#line 15391 "configure"
+#line 15392 "configure"
 int main()
 {
   typedef bool atomic_type;
@@ -15423,7 +15424,7 @@ $as_echo "$glibcxx_cv_atomic_bool" >&6; }
     rm -f conftest*
 
     cat > conftest.$ac_ext << EOF
-#line 15426 "configure"
+#line 15427 "configure"
 int main()
 {
   typedef short atomic_type;
@@ -15458,7 +15459,7 @@ $as_echo "$glibcxx_cv_atomic_short" >&6; }
     rm -f conftest*
 
     cat > conftest.$ac_ext << EOF
-#line 15461 "configure"
+#line 15462 "configure"
 int main()
 {
   // NB: _Atomic_word not necessarily int.
@@ -15494,7 +15495,7 @@ $as_echo "$glibcxx_cv_atomic_int" >&6; }
     rm -f conftest*
 
     cat > conftest.$ac_ext << EOF
-#line 15497 "configure"
+#line 15498 "configure"
 int main()
 {
   typedef long long atomic_type;
@@ -15575,7 +15576,7 @@ $as_echo "$as_me: WARNING: Performance of certain classes will degrade as a resu
   # unnecessary for this test.
 
     cat > conftest.$ac_ext << EOF
-#line 15578 "configure"
+#line 15579 "configure"
 int main()
 {
   _Decimal32 d1;
@@ -15617,7 +15618,7 @@ ac_compiler_gnu=$ac_cv_cxx_compiler_gnu
   # unnecessary for this test.
 
     cat > conftest.$ac_ext << EOF
-#line 15620 "configure"
+#line 15621 "configure"
 template<typename T1, typename T2>
   struct same
   { typedef T2 type; };
@@ -15651,7 +15652,7 @@ $as_echo "$enable_int128" >&6; }
     rm -f conftest*
 
     cat > conftest.$ac_ext << EOF
-#line 15654 "configure"
+#line 15655 "configure"
 template<typename T1, typename T2>
   struct same
   { typedef T2 type; };
@@ -79344,6 +79345,7 @@ $as_echo "${default_libstdcxx_abi}" >&6; }
 
 
 ac_ldbl_compat=no
+LONG_DOUBLE_COMPAT_FLAGS="-mlong-double-64"
 case "$target" in
   powerpc*-*-linux* | \
   sparc*-*-linux* | \
@@ -79375,10 +79377,15 @@ rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
 $as_echo "#define _GLIBCXX_LONG_DOUBLE_COMPAT 1" >>confdefs.h
 
     port_specific_symbol_files="\$(top_srcdir)/config/os/gnu-linux/ldbl-extra.ver"
+    case "$target" in
+      powerpc*-*-linux*)
+	LONG_DOUBLE_COMPAT_FLAGS="$LONG_DOUBLE_COMPAT_FLAGS -mno-gnu-attribute" ;;
+    esac
   fi
 esac
 
 
+
 # Check if assembler supports disabling hardware capability support.
 
   test -z "$HWCAP_FLAGS" && HWCAP_FLAGS=''
diff --git a/libstdc++-v3/configure.ac b/libstdc++-v3/configure.ac
index baf605c..7d0fafa 100644
--- a/libstdc++-v3/configure.ac
+++ b/libstdc++-v3/configure.ac
@@ -375,6 +375,7 @@ GLIBCXX_ENABLE_LIBSTDCXX_DUAL_ABI([yes])
 GLIBCXX_DEFAULT_ABI
 
 ac_ldbl_compat=no
+LONG_DOUBLE_COMPAT_FLAGS="-mlong-double-64"
 case "$target" in
   powerpc*-*-linux* | \
   sparc*-*-linux* | \
@@ -389,8 +390,13 @@ case "$target" in
     AC_DEFINE([_GLIBCXX_LONG_DOUBLE_COMPAT],1,
 	      [Define if compatibility should be provided for -mlong-double-64.])
     port_specific_symbol_files="\$(top_srcdir)/config/os/gnu-linux/ldbl-extra.ver"
+    case "$target" in
+      powerpc*-*-linux*)
+	LONG_DOUBLE_COMPAT_FLAGS="$LONG_DOUBLE_COMPAT_FLAGS -mno-gnu-attribute" ;;
+    esac
   fi
 esac
+AC_SUBST(LONG_DOUBLE_COMPAT_FLAGS)
 GLIBCXX_CONDITIONAL(GLIBCXX_LDBL_COMPAT, test $ac_ldbl_compat = yes)
 
 # Check if assembler supports disabling hardware capability support.
diff --git a/libstdc++-v3/doc/Makefile.in b/libstdc++-v3/doc/Makefile.in
index 3e729c1..c3874f7 100644
--- a/libstdc++-v3/doc/Makefile.in
+++ b/libstdc++-v3/doc/Makefile.in
@@ -163,6 +163,7 @@ LIBS = @LIBS@
 LIBTOOL = @LIBTOOL@
 LIPO = @LIPO@
 LN_S = @LN_S@
+LONG_DOUBLE_COMPAT_FLAGS = @LONG_DOUBLE_COMPAT_FLAGS@
 LTLIBICONV = @LTLIBICONV@
 LTLIBOBJS = @LTLIBOBJS@
 MAINT = @MAINT@
diff --git a/libstdc++-v3/include/Makefile.in b/libstdc++-v3/include/Makefile.in
index 502a89e..4e2b9e4 100644
--- a/libstdc++-v3/include/Makefile.in
+++ b/libstdc++-v3/include/Makefile.in
@@ -163,6 +163,7 @@ LIBS = @LIBS@
 LIBTOOL = @LIBTOOL@
 LIPO = @LIPO@
 LN_S = @LN_S@
+LONG_DOUBLE_COMPAT_FLAGS = @LONG_DOUBLE_COMPAT_FLAGS@
 LTLIBICONV = @LTLIBICONV@
 LTLIBOBJS = @LTLIBOBJS@
 MAINT = @MAINT@
diff --git a/libstdc++-v3/libsupc++/Makefile.in b/libstdc++-v3/libsupc++/Makefile.in
index e828ed9..3e663e0 100644
--- a/libstdc++-v3/libsupc++/Makefile.in
+++ b/libstdc++-v3/libsupc++/Makefile.in
@@ -236,6 +236,7 @@ LIBS = @LIBS@
 LIBTOOL = @LIBTOOL@
 LIPO = @LIPO@
 LN_S = @LN_S@
+LONG_DOUBLE_COMPAT_FLAGS = @LONG_DOUBLE_COMPAT_FLAGS@
 LTLIBICONV = @LTLIBICONV@
 LTLIBOBJS = @LTLIBOBJS@
 MAINT = @MAINT@
diff --git a/libstdc++-v3/po/Makefile.in b/libstdc++-v3/po/Makefile.in
index 13993c8..83f13d0 100644
--- a/libstdc++-v3/po/Makefile.in
+++ b/libstdc++-v3/po/Makefile.in
@@ -163,6 +163,7 @@ LIBS = @LIBS@
 LIBTOOL = @LIBTOOL@
 LIPO = @LIPO@
 LN_S = @LN_S@
+LONG_DOUBLE_COMPAT_FLAGS = @LONG_DOUBLE_COMPAT_FLAGS@
 LTLIBICONV = @LTLIBICONV@
 LTLIBOBJS = @LTLIBOBJS@
 MAINT = @MAINT@
diff --git a/libstdc++-v3/python/Makefile.in b/libstdc++-v3/python/Makefile.in
index 25b2ed4..dcc9e06 100644
--- a/libstdc++-v3/python/Makefile.in
+++ b/libstdc++-v3/python/Makefile.in
@@ -193,6 +193,7 @@ LIBS = @LIBS@
 LIBTOOL = @LIBTOOL@
 LIPO = @LIPO@
 LN_S = @LN_S@
+LONG_DOUBLE_COMPAT_FLAGS = @LONG_DOUBLE_COMPAT_FLAGS@
 LTLIBICONV = @LTLIBICONV@
 LTLIBOBJS = @LTLIBOBJS@
 MAINT = @MAINT@
diff --git a/libstdc++-v3/src/Makefile.am b/libstdc++-v3/src/Makefile.am
index 00a6168..d9830c2 100644
--- a/libstdc++-v3/src/Makefile.am
+++ b/libstdc++-v3/src/Makefile.am
@@ -109,9 +109,9 @@ libstdc___la_LINK = $(CXXLINK) $(libstdc___la_LDFLAGS)
 # pass -mlong-double-64.
 if GLIBCXX_LDBL_COMPAT
 compatibility-ldbl.lo: compatibility-ldbl.cc
-	$(LTCXXCOMPILE) -mlong-double-64 -c $<
+	$(LTCXXCOMPILE) $(LONG_DOUBLE_COMPAT_FLAGS) -c $<
 compatibility-ldbl.o: compatibility-ldbl.cc
-	$(CXXCOMPILE) -mlong-double-64 -c $<
+	$(CXXCOMPILE) $(LONG_DOUBLE_COMPAT_FLAGS) -c $<
 endif
 
 # Use special rules for C++11 files/objects.
diff --git a/libstdc++-v3/src/Makefile.in b/libstdc++-v3/src/Makefile.in
index 09fe24e..ed53269 100644
--- a/libstdc++-v3/src/Makefile.in
+++ b/libstdc++-v3/src/Makefile.in
@@ -226,6 +226,7 @@ LIBS = @LIBS@
 LIBTOOL = @LIBTOOL@
 LIPO = @LIPO@
 LN_S = @LN_S@
+LONG_DOUBLE_COMPAT_FLAGS = @LONG_DOUBLE_COMPAT_FLAGS@
 LTLIBICONV = @LTLIBICONV@
 LTLIBOBJS = @LTLIBOBJS@
 MAINT = @MAINT@
@@ -902,9 +903,9 @@ vpath % $(top_srcdir)/src/c++11
 # Use special rules for compatibility-ldbl.cc compilation, as we need to
 # pass -mlong-double-64.
 @GLIBCXX_LDBL_COMPAT_TRUE@compatibility-ldbl.lo: compatibility-ldbl.cc
-@GLIBCXX_LDBL_COMPAT_TRUE@	$(LTCXXCOMPILE) -mlong-double-64 -c $<
+@GLIBCXX_LDBL_COMPAT_TRUE@	$(LTCXXCOMPILE) $(LONG_DOUBLE_COMPAT_FLAGS) -c $<
 @GLIBCXX_LDBL_COMPAT_TRUE@compatibility-ldbl.o: compatibility-ldbl.cc
-@GLIBCXX_LDBL_COMPAT_TRUE@	$(CXXCOMPILE) -mlong-double-64 -c $<
+@GLIBCXX_LDBL_COMPAT_TRUE@	$(CXXCOMPILE) $(LONG_DOUBLE_COMPAT_FLAGS) -c $<
 
 # Use special rules for C++11 files/objects.
 compatibility-c++0x.lo: compatibility-c++0x.cc
diff --git a/libstdc++-v3/src/c++11/Makefile.in b/libstdc++-v3/src/c++11/Makefile.in
index 30c4a23b..465ec3a 100644
--- a/libstdc++-v3/src/c++11/Makefile.in
+++ b/libstdc++-v3/src/c++11/Makefile.in
@@ -196,6 +196,7 @@ LIBS = @LIBS@
 LIBTOOL = @LIBTOOL@
 LIPO = @LIPO@
 LN_S = @LN_S@
+LONG_DOUBLE_COMPAT_FLAGS = @LONG_DOUBLE_COMPAT_FLAGS@
 LTLIBICONV = @LTLIBICONV@
 LTLIBOBJS = @LTLIBOBJS@
 MAINT = @MAINT@
diff --git a/libstdc++-v3/src/c++98/Makefile.in b/libstdc++-v3/src/c++98/Makefile.in
index 931f879..591fe70 100644
--- a/libstdc++-v3/src/c++98/Makefile.in
+++ b/libstdc++-v3/src/c++98/Makefile.in
@@ -197,6 +197,7 @@ LIBS = @LIBS@
 LIBTOOL = @LIBTOOL@
 LIPO = @LIPO@
 LN_S = @LN_S@
+LONG_DOUBLE_COMPAT_FLAGS = @LONG_DOUBLE_COMPAT_FLAGS@
 LTLIBICONV = @LTLIBICONV@
 LTLIBOBJS = @LTLIBOBJS@
 MAINT = @MAINT@
diff --git a/libstdc++-v3/src/filesystem/Makefile.in b/libstdc++-v3/src/filesystem/Makefile.in
index 7e77aa5..a620c68 100644
--- a/libstdc++-v3/src/filesystem/Makefile.in
+++ b/libstdc++-v3/src/filesystem/Makefile.in
@@ -205,6 +205,7 @@ LIBS = @LIBS@
 LIBTOOL = @LIBTOOL@
 LIPO = @LIPO@
 LN_S = @LN_S@
+LONG_DOUBLE_COMPAT_FLAGS = @LONG_DOUBLE_COMPAT_FLAGS@
 LTLIBICONV = @LTLIBICONV@
 LTLIBOBJS = @LTLIBOBJS@
 MAINT = @MAINT@
diff --git a/libstdc++-v3/testsuite/Makefile.in b/libstdc++-v3/testsuite/Makefile.in
index 31fa94c..b37758b 100644
--- a/libstdc++-v3/testsuite/Makefile.in
+++ b/libstdc++-v3/testsuite/Makefile.in
@@ -163,6 +163,7 @@ LIBS = @LIBS@
 LIBTOOL = @LIBTOOL@
 LIPO = @LIPO@
 LN_S = @LN_S@
+LONG_DOUBLE_COMPAT_FLAGS = @LONG_DOUBLE_COMPAT_FLAGS@
 LTLIBICONV = @LTLIBICONV@
 LTLIBOBJS = @LTLIBOBJS@
 MAINT = @MAINT@