gold/

	* configure.ac (MERGE_CONSTANTS_FLAG): New check.
	* configure: Regenerate.
	* Makefile.in: Regenerate.
	* testsuite/merge_string_literals_1.c: Renamed to have .cc suffix.
	* testsuite/merge_string_literals_2.c: Likewise.
	* testsuite/Makefile.am
	(merge_string_literals_1.o, merge_string_literals_2.o): Update deps.
	(AM_CFLAGS, AM_CXXFLAGS): Use $(MERGE_CONSTANTS_FLAG) in place of
	literal -fmerge-constants.
	* testsuite/Makefile.in: Regenerate.

4 files changed, 30 insertions, 29 deletions

diff --git a/gold/testsuite/Makefile.am b/gold/testsuite/Makefile.am
index 570781d..8f93c5a 100644
--- a/gold/testsuite/Makefile.am
+++ b/gold/testsuite/Makefile.am
@@ -8,10 +8,10 @@
 AUTOMAKE_OPTIONS = foreign -Wno-portability
 
 # The two_file_test tests -fmerge-constants, so we simply always turn
-# it on.  This may need to be controlled by a configure option
-# eventually.
-AM_CFLAGS = $(WARN_CFLAGS) $(LFS_CFLAGS) -fmerge-constants
-AM_CXXFLAGS = $(WARN_CXXFLAGS) $(LFS_CFLAGS) -fmerge-constants
+# it on.  For compilers that do not support the command-line option,
+# we assume they just always emit SHF_MERGE sections unconditionally.
+AM_CFLAGS = $(WARN_CFLAGS) $(LFS_CFLAGS) $(MERGE_CONSTANTS_FLAG)
+AM_CXXFLAGS = $(WARN_CXXFLAGS) $(LFS_CFLAGS) $(MERGE_CONSTANTS_FLAG)
 
 AM_CPPFLAGS = \
 	-I$(srcdir) -I$(srcdir)/.. -I$(srcdir)/../../include \
@@ -74,7 +74,7 @@ MOSTLYCLEANFILES = *.so *.syms *.stdout
 # Export make variables to the shell scripts so that they can see
 # (for example) DEFAULT_TARGET.
 .EXPORT_ALL_VARIABLES:
- 
+
 # We will add to these later, for each individual test.  Note
 # that we add each test under check_SCRIPTS or check_PROGRAMS;
 # the TESTS variable is automatically populated from these.
@@ -164,9 +164,9 @@ incremental_test.stdout: incremental_test ../incremental-dump
 check_SCRIPTS += gc_comdat_test.sh
 check_DATA += gc_comdat_test.stdout
 MOSTLYCLEANFILES += gc_comdat_test
-gc_comdat_test_1.o: gc_comdat_test_1.cc 
+gc_comdat_test_1.o: gc_comdat_test_1.cc
 	$(CXXCOMPILE) -O0 -c -ffunction-sections -g -o $@ $<
-gc_comdat_test_2.o: gc_comdat_test_2.cc 
+gc_comdat_test_2.o: gc_comdat_test_2.cc
 	$(CXXCOMPILE) -O0 -c -ffunction-sections -g -o $@ $<
 gc_comdat_test: gc_comdat_test_1.o gc_comdat_test_2.o gcctestdir/ld
 	$(CXXLINK) -Bgcctestdir/ -Wl,--gc-sections gc_comdat_test_1.o gc_comdat_test_2.o
@@ -198,7 +198,7 @@ check_DATA += pr14265.stdout
 MOSTLYCLEANFILES += pr14265
 pr14265.o: pr14265.c
 	$(COMPILE) -O0 -c -o $@ $<
-pr14265: pr14265.o 
+pr14265: pr14265.o
 	$(LINK) -Bgcctestdir/ -Wl,--gc-sections -T $(srcdir)/pr14265.t -o $@ $<
 pr14265.stdout: pr14265
 	$(TEST_NM) --format=bsd --numeric-sort $< > $@
@@ -206,7 +206,7 @@ pr14265.stdout: pr14265
 check_SCRIPTS += icf_test.sh
 check_DATA += icf_test.map
 MOSTLYCLEANFILES += icf_test icf_test.map
-icf_test.o: icf_test.cc 
+icf_test.o: icf_test.cc
 	$(CXXCOMPILE) -O0 -c -ffunction-sections -g -o $@ $<
 icf_test: icf_test.o gcctestdir/ld
 	$(CXXLINK) -o icf_test -Bgcctestdir/ -Wl,--icf=all,-Map,icf_test.map icf_test.o
@@ -277,7 +277,7 @@ text_section_no_grouping: text_section_grouping.o gcctestdir/ld
 text_section_grouping.stdout: text_section_grouping
 	$(TEST_NM) -n --synthetic text_section_grouping > text_section_grouping.stdout
 text_section_no_grouping.stdout: text_section_no_grouping
-	$(TEST_NM) -n --synthetic text_section_no_grouping > text_section_no_grouping.stdout 
+	$(TEST_NM) -n --synthetic text_section_no_grouping > text_section_no_grouping.stdout
 
 check_SCRIPTS += section_sorting_name.sh
 check_DATA += section_sorting_name.stdout
@@ -337,9 +337,9 @@ large_symbol_alignment_LDADD =
 check_SCRIPTS += merge_string_literals.sh
 check_DATA += merge_string_literals.stdout
 MOSTLYCLEANFILES += merge_string_literals
-merge_string_literals_1.o: merge_string_literals_1.c
+merge_string_literals_1.o: merge_string_literals_1.cc
 	$(CXXCOMPILE) -O2 -c -fPIC -g -o $@ $<
-merge_string_literals_2.o: merge_string_literals_2.c
+merge_string_literals_2.o: merge_string_literals_2.cc
 	$(CXXCOMPILE) -O2 -c -fPIC -g -o $@ $<
 merge_string_literals: merge_string_literals_1.o merge_string_literals_2.o gcctestdir/ld
 	$(CXXLINK) -Bgcctestdir/ merge_string_literals_1.o merge_string_literals_2.o -O2 -shared -nostdlib
@@ -1759,7 +1759,7 @@ retain_symbols_file_test.so: basic_pic_test.o gcctestdir/ld
 	echo '_ZN4t16bC1Ev' >> retain_symbols_file_test.in
 	echo '_ZNK4t20a3getEv' >> retain_symbols_file_test.in
 	echo '_Z3t18v' >> retain_symbols_file_test.in
-	echo '__tcf_0' >> retain_symbols_file_test.in	
+	echo '__tcf_0' >> retain_symbols_file_test.in
 	$(CXXLINK) -Bgcctestdir/ -shared -Wl,-retain-symbols-file,retain_symbols_file_test.in basic_pic_test.o
 retain_symbols_file_test.stdout: retain_symbols_file_test.so
 	$(TEST_NM) -C retain_symbols_file_test.so > $@
@@ -1789,7 +1789,7 @@ alt/searched_file_test_lib.a: searched_file_test_lib.o
 	test -d alt || mkdir -p alt
 	$(TEST_AR) rc $@ $^
 
-# Test that no .gnu.version sections are created when 
+# Test that no .gnu.version sections are created when
 # symbol versioning is not used.
 check_SCRIPTS += no_version_test.sh
 check_DATA += no_version_test.stdout
@@ -2032,7 +2032,7 @@ ifuncmain7pie: ifuncmain7pie.o gcctestdir/ld
 check_PROGRAMS += ifuncvar
 ifuncvar1_pic.o: ifuncvar1.c
 	$(COMPILE) -c -fPIC -o $@ $<
-ifuncvar2_pic.o: ifuncvar2.c	
+ifuncvar2_pic.o: ifuncvar2.c
 	$(COMPILE) -c -fPIC -o $@ $<
 ifuncvar.so: ifuncvar1_pic.o ifuncvar2_pic.o gcctestdir/ld
 	$(LINK) -Bgcctestdir/ -shared ifuncvar1_pic.o ifuncvar2_pic.o
diff --git a/gold/testsuite/Makefile.in b/gold/testsuite/Makefile.in
index 855ba80..24239b6 100644
--- a/gold/testsuite/Makefile.in
+++ b/gold/testsuite/Makefile.in
@@ -390,7 +390,7 @@ check_PROGRAMS = $(am__EXEEXT_1) $(am__EXEEXT_2) $(am__EXEEXT_3) \
 
 # Test -retain-symbols-file.
 
-# Test that no .gnu.version sections are created when 
+# Test that no .gnu.version sections are created when
 # symbol versioning is not used.
 
 # Test that strong reference to a weak symbol in a DSO remains strong.
@@ -1964,6 +1964,7 @@ LN_S = @LN_S@
 LTLIBOBJS = @LTLIBOBJS@
 MAINT = @MAINT@
 MAKEINFO = @MAKEINFO@
+MERGE_CONSTANTS_FLAG = @MERGE_CONSTANTS_FLAG@
 MKDIR_P = @MKDIR_P@
 MKINSTALLDIRS = @MKINSTALLDIRS@
 MSGFMT = @MSGFMT@
@@ -2055,10 +2056,10 @@ top_srcdir = @top_srcdir@
 AUTOMAKE_OPTIONS = foreign -Wno-portability
 
 # The two_file_test tests -fmerge-constants, so we simply always turn
-# it on.  This may need to be controlled by a configure option
-# eventually.
-AM_CFLAGS = $(WARN_CFLAGS) $(LFS_CFLAGS) -fmerge-constants
-AM_CXXFLAGS = $(WARN_CXXFLAGS) $(LFS_CFLAGS) -fmerge-constants
+# it on.  For compilers that do not support the command-line option,
+# we assume they just always emit SHF_MERGE sections unconditionally.
+AM_CFLAGS = $(WARN_CFLAGS) $(LFS_CFLAGS) $(MERGE_CONSTANTS_FLAG)
+AM_CXXFLAGS = $(WARN_CXXFLAGS) $(LFS_CFLAGS) $(MERGE_CONSTANTS_FLAG)
 AM_CPPFLAGS = \
 	-I$(srcdir) -I$(srcdir)/.. -I$(srcdir)/../../include \
 	-I$(srcdir)/../../elfcpp -I.. \
@@ -4405,9 +4406,9 @@ uninstall-am:
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(LINK) -Bgcctestdir/ -Wl,--incremental-full incremental_test_1.o incremental_test_2.o -Wl,-debug 2> incremental_test.cmdline
 @GCC_TRUE@@NATIVE_LINKER_TRUE@incremental_test.stdout: incremental_test ../incremental-dump
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	../incremental-dump incremental_test > $@
-@GCC_TRUE@@NATIVE_LINKER_TRUE@gc_comdat_test_1.o: gc_comdat_test_1.cc 
+@GCC_TRUE@@NATIVE_LINKER_TRUE@gc_comdat_test_1.o: gc_comdat_test_1.cc
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(CXXCOMPILE) -O0 -c -ffunction-sections -g -o $@ $<
-@GCC_TRUE@@NATIVE_LINKER_TRUE@gc_comdat_test_2.o: gc_comdat_test_2.cc 
+@GCC_TRUE@@NATIVE_LINKER_TRUE@gc_comdat_test_2.o: gc_comdat_test_2.cc
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(CXXCOMPILE) -O0 -c -ffunction-sections -g -o $@ $<
 @GCC_TRUE@@NATIVE_LINKER_TRUE@gc_comdat_test: gc_comdat_test_1.o gc_comdat_test_2.o gcctestdir/ld
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(CXXLINK) -Bgcctestdir/ -Wl,--gc-sections gc_comdat_test_1.o gc_comdat_test_2.o
@@ -4427,11 +4428,11 @@ uninstall-am:
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_NM) gc_orphan_section_test > gc_orphan_section_test.stdout
 @GCC_TRUE@@NATIVE_LINKER_TRUE@pr14265.o: pr14265.c
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(COMPILE) -O0 -c -o $@ $<
-@GCC_TRUE@@NATIVE_LINKER_TRUE@pr14265: pr14265.o 
+@GCC_TRUE@@NATIVE_LINKER_TRUE@pr14265: pr14265.o
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(LINK) -Bgcctestdir/ -Wl,--gc-sections -T $(srcdir)/pr14265.t -o $@ $<
 @GCC_TRUE@@NATIVE_LINKER_TRUE@pr14265.stdout: pr14265
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_NM) --format=bsd --numeric-sort $< > $@
-@GCC_TRUE@@NATIVE_LINKER_TRUE@icf_test.o: icf_test.cc 
+@GCC_TRUE@@NATIVE_LINKER_TRUE@icf_test.o: icf_test.cc
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(CXXCOMPILE) -O0 -c -ffunction-sections -g -o $@ $<
 @GCC_TRUE@@NATIVE_LINKER_TRUE@icf_test: icf_test.o gcctestdir/ld
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(CXXLINK) -o icf_test -Bgcctestdir/ -Wl,--icf=all,-Map,icf_test.map icf_test.o
@@ -4482,7 +4483,7 @@ uninstall-am:
 @GCC_TRUE@@NATIVE_LINKER_TRUE@text_section_grouping.stdout: text_section_grouping
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_NM) -n --synthetic text_section_grouping > text_section_grouping.stdout
 @GCC_TRUE@@NATIVE_LINKER_TRUE@text_section_no_grouping.stdout: text_section_no_grouping
-@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_NM) -n --synthetic text_section_no_grouping > text_section_no_grouping.stdout 
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_NM) -n --synthetic text_section_no_grouping > text_section_no_grouping.stdout
 @GCC_TRUE@@NATIVE_LINKER_TRUE@section_sorting_name.o: section_sorting_name.cc
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(CXXCOMPILE) -O0 -c -ffunction-sections -g -o $@ $<
 @GCC_TRUE@@NATIVE_LINKER_TRUE@section_sorting_name: section_sorting_name.o gcctestdir/ld
@@ -4513,9 +4514,9 @@ uninstall-am:
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(CXXLINK) -Bgcctestdir/ -Wl,--icf=all icf_sht_rel_addend_test_1.o icf_sht_rel_addend_test_2.o
 @GCC_TRUE@@NATIVE_LINKER_TRUE@icf_sht_rel_addend_test.stdout: icf_sht_rel_addend_test
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_NM) icf_sht_rel_addend_test > icf_sht_rel_addend_test.stdout
-@GCC_TRUE@@NATIVE_LINKER_TRUE@merge_string_literals_1.o: merge_string_literals_1.c
+@GCC_TRUE@@NATIVE_LINKER_TRUE@merge_string_literals_1.o: merge_string_literals_1.cc
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(CXXCOMPILE) -O2 -c -fPIC -g -o $@ $<
-@GCC_TRUE@@NATIVE_LINKER_TRUE@merge_string_literals_2.o: merge_string_literals_2.c
+@GCC_TRUE@@NATIVE_LINKER_TRUE@merge_string_literals_2.o: merge_string_literals_2.cc
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(CXXCOMPILE) -O2 -c -fPIC -g -o $@ $<
 @GCC_TRUE@@NATIVE_LINKER_TRUE@merge_string_literals: merge_string_literals_1.o merge_string_literals_2.o gcctestdir/ld
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(CXXLINK) -Bgcctestdir/ merge_string_literals_1.o merge_string_literals_2.o -O2 -shared -nostdlib
@@ -5128,7 +5129,7 @@ uninstall-am:
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	echo '_ZN4t16bC1Ev' >> retain_symbols_file_test.in
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	echo '_ZNK4t20a3getEv' >> retain_symbols_file_test.in
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	echo '_Z3t18v' >> retain_symbols_file_test.in
-@GCC_TRUE@@NATIVE_LINKER_TRUE@	echo '__tcf_0' >> retain_symbols_file_test.in	
+@GCC_TRUE@@NATIVE_LINKER_TRUE@	echo '__tcf_0' >> retain_symbols_file_test.in
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(CXXLINK) -Bgcctestdir/ -shared -Wl,-retain-symbols-file,retain_symbols_file_test.in basic_pic_test.o
 @GCC_TRUE@@NATIVE_LINKER_TRUE@retain_symbols_file_test.stdout: retain_symbols_file_test.so
 @GCC_TRUE@@NATIVE_LINKER_TRUE@	$(TEST_NM) -C retain_symbols_file_test.so > $@
@@ -5250,7 +5251,7 @@ uninstall-am:
 @GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@	$(LINK) -Bgcctestdir/ -pie ifuncmain7pie.o
 @GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncvar1_pic.o: ifuncvar1.c
 @GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@	$(COMPILE) -c -fPIC -o $@ $<
-@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncvar2_pic.o: ifuncvar2.c	
+@GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncvar2_pic.o: ifuncvar2.c
 @GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@	$(COMPILE) -c -fPIC -o $@ $<
 @GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@ifuncvar.so: ifuncvar1_pic.o ifuncvar2_pic.o gcctestdir/ld
 @GCC_TRUE@@IFUNC_TRUE@@NATIVE_LINKER_TRUE@	$(LINK) -Bgcctestdir/ -shared ifuncvar1_pic.o ifuncvar2_pic.o
diff --git a/gold/testsuite/merge_string_literals_1.c b/gold/testsuite/merge_string_literals_1.cc
index fc0487c..fc0487c 100644
--- a/gold/testsuite/merge_string_literals_1.c
+++ b/gold/testsuite/merge_string_literals_1.cc
diff --git a/gold/testsuite/merge_string_literals_2.c b/gold/testsuite/merge_string_literals_2.cc
index d1185cd..d1185cd 100644
--- a/gold/testsuite/merge_string_literals_2.c
+++ b/gold/testsuite/merge_string_literals_2.cc