runtime: set library name based on compiler name

Different compilers may have different release cadences or ABI
incompatibilities, so it does not make sense to use the same library
name for runtime libraries intended for different compilers.

This CL causes a libgo built by llgo to receive the name libgo-llgo.
Likewise, libgobegin is named libgobegin-llgo.

From-SVN: r217583

libgo/Makefile.am

@@ -99,8 +99,13 @@ AM_MAKEFLAGS = \
 # Subdir rules rely on $(FLAGS_TO_PASS)
 FLAGS_TO_PASS = $(AM_MAKEFLAGS)
 
+if GOC_IS_LLGO
+toolexeclib_LTLIBRARIES = libgo-llgo.la
+toolexeclib_LIBRARIES = libgobegin-llgo.a
+else
 toolexeclib_LTLIBRARIES = libgo.la
 toolexeclib_LIBRARIES = libgobegin.a
+endif
 
 toolexeclibgo_DATA = \
 	bufio.gox \
@@ -1993,18 +1998,27 @@ libgo_go_objs = \
 	unicode/utf16.lo \
 	unicode/utf8.lo
 
-libgo_la_SOURCES = $(runtime_files)
+libgo_ldflags = \
-
-libgo_la_LDFLAGS = \
 	-version-info $(libtool_VERSION) $(PTHREAD_CFLAGS) $(AM_LDFLAGS)
 
-libgo_la_LIBADD = \
+libgo_libadd = \
 	$(libgo_go_objs) ../libbacktrace/libbacktrace.la \
 	$(LIBATOMIC) $(LIBFFI) $(PTHREAD_LIBS) $(MATH_LIBS) $(NET_LIBS)
 
+libgo_la_SOURCES = $(runtime_files)
+libgo_la_LDFLAGS = $(libgo_ldflags)
+libgo_la_LIBADD = $(libgo_libadd)
+
+libgo_llgo_la_SOURCES = $(runtime_files)
+libgo_llgo_la_LDFLAGS = $(libgo_ldflags)
+libgo_llgo_la_LIBADD = $(libgo_libadd)
+
 libgobegin_a_SOURCES = \
 	runtime/go-main.c
 
+libgobegin_llgo_a_SOURCES = \
+	runtime/go-main.c
+
 LTLDFLAGS = $(shell $(SHELL) $(top_srcdir)/../libtool-ldflags $(LDFLAGS))
 
 GOCFLAGS = $(CFLAGS)
@@ -2066,7 +2080,7 @@ CHECK = \
 	fi
 
 # Build all packages before checking any.
-CHECK_DEPS = libgo.la libgobegin.a \
+CHECK_DEPS = \
 	$(toolexeclibgo_DATA) \
 	$(toolexeclibgoarchive_DATA) \
 	$(toolexeclibgocompress_DATA) \
@@ -2095,6 +2109,12 @@ CHECK_DEPS = libgo.la libgobegin.a \
 	$(toolexeclibgotexttemplate_DATA) \
 	$(toolexeclibgounicode_DATA)
 
+if GOC_IS_LLGO
+CHECK_DEPS += libgo-llgo.la libgobegin-llgo.a
+else
+CHECK_DEPS += libgo.la libgobegin.a
+endif
+
 @go_include@ bufio.lo.dep
 bufio.lo.dep: $(go_bufio_files)
 	$(BUILDDEPS)

libgo/Makefile.in

@@ -45,6 +45,8 @@ POST_UNINSTALL = :
 build_triplet = @build@
 host_triplet = @host@
 target_triplet = @target@
+@GOC_IS_LLGO_TRUE@am__append_1 = libgo-llgo.la libgobegin-llgo.a
+@GOC_IS_LLGO_FALSE@am__append_2 = libgo.la libgobegin.a
 subdir = .
 DIST_COMMON = README $(srcdir)/Makefile.in $(srcdir)/Makefile.am \
 	$(top_srcdir)/configure $(am__configure_deps) \
@@ -126,6 +128,10 @@ am__installdirs = "$(DESTDIR)$(toolexeclibdir)" \
 	"$(DESTDIR)$(toolexeclibgounicodedir)"
 LIBRARIES = $(toolexeclib_LIBRARIES)
 ARFLAGS = cru
+libgobegin_llgo_a_AR = $(AR) $(ARFLAGS)
+libgobegin_llgo_a_LIBADD =
+am_libgobegin_llgo_a_OBJECTS = go-main.$(OBJEXT)
+libgobegin_llgo_a_OBJECTS = $(am_libgobegin_llgo_a_OBJECTS)
 libgobegin_a_AR = $(AR) $(ARFLAGS)
 libgobegin_a_LIBADD =
 am_libgobegin_a_OBJECTS = go-main.$(OBJEXT)
@@ -171,10 +177,11 @@ am__DEPENDENCIES_2 = bufio.lo bytes.lo bytes/index.lo crypto.lo \
 	text/tabwriter.lo text/template.lo text/template/parse.lo \
 	testing/iotest.lo testing/quick.lo unicode/utf16.lo \
 	unicode/utf8.lo
-libgo_la_DEPENDENCIES = $(am__DEPENDENCIES_2) \
+am__DEPENDENCIES_3 = $(am__DEPENDENCIES_2) \
 	../libbacktrace/libbacktrace.la $(am__DEPENDENCIES_1) \
 	$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1) \
 	$(am__DEPENDENCIES_1) $(am__DEPENDENCIES_1)
+libgo_llgo_la_DEPENDENCIES = $(am__DEPENDENCIES_3)
 @LIBGO_IS_LINUX_FALSE@am__objects_1 = lock_sema.lo thread-sema.lo
 @LIBGO_IS_LINUX_TRUE@am__objects_1 = lock_futex.lo thread-linux.lo
 @HAVE_SYS_MMAN_H_FALSE@am__objects_2 = mem_posix_memalign.lo
@@ -220,11 +227,19 @@ am__objects_6 = go-append.lo go-assert.lo go-assert-interface.lo \
 	malloc.lo map.lo mprof.lo netpoll.lo rdebug.lo reflect.lo \
 	runtime1.lo sema.lo sigqueue.lo string.lo time.lo \
 	$(am__objects_5)
+am_libgo_llgo_la_OBJECTS = $(am__objects_6)
+libgo_llgo_la_OBJECTS = $(am_libgo_llgo_la_OBJECTS)
+libgo_llgo_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) \
+	$(LIBTOOLFLAGS) --mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) \
+	$(libgo_llgo_la_LDFLAGS) $(LDFLAGS) -o $@
+@GOC_IS_LLGO_TRUE@am_libgo_llgo_la_rpath = -rpath $(toolexeclibdir)
+libgo_la_DEPENDENCIES = $(am__DEPENDENCIES_3)
 am_libgo_la_OBJECTS = $(am__objects_6)
 libgo_la_OBJECTS = $(am_libgo_la_OBJECTS)
 libgo_la_LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
 	--mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(libgo_la_LDFLAGS) \
 	$(LDFLAGS) -o $@
+@GOC_IS_LLGO_FALSE@am_libgo_la_rpath = -rpath $(toolexeclibdir)
 DEFAULT_INCLUDES = -I.@am__isrc@
 depcomp = $(SHELL) $(top_srcdir)/../depcomp
 am__depfiles_maybe = depfiles
@@ -238,7 +253,8 @@ CCLD = $(CC)
 LINK = $(LIBTOOL) --tag=CC $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
 	--mode=link $(CCLD) $(AM_CFLAGS) $(CFLAGS) $(AM_LDFLAGS) \
 	$(LDFLAGS) -o $@
-SOURCES = $(libgobegin_a_SOURCES) $(libgo_la_SOURCES)
+SOURCES = $(libgobegin_llgo_a_SOURCES) $(libgobegin_a_SOURCES) \
+	$(libgo_llgo_la_SOURCES) $(libgo_la_SOURCES)
 MULTISRCTOP = 
 MULTIBUILDTOP = 
 MULTIDIRS = 
@@ -501,8 +517,10 @@ AM_MAKEFLAGS = \
 
 # Subdir rules rely on $(FLAGS_TO_PASS)
 FLAGS_TO_PASS = $(AM_MAKEFLAGS)
-toolexeclib_LTLIBRARIES = libgo.la
+@GOC_IS_LLGO_FALSE@toolexeclib_LTLIBRARIES = libgo.la
-toolexeclib_LIBRARIES = libgobegin.a
+@GOC_IS_LLGO_TRUE@toolexeclib_LTLIBRARIES = libgo-llgo.la
+@GOC_IS_LLGO_FALSE@toolexeclib_LIBRARIES = libgobegin.a
+@GOC_IS_LLGO_TRUE@toolexeclib_LIBRARIES = libgobegin-llgo.a
 toolexeclibgo_DATA = \
 	bufio.gox \
 	bytes.gox \
@@ -2054,17 +2072,25 @@ libgo_go_objs = \
 	unicode/utf16.lo \
 	unicode/utf8.lo
 
-libgo_la_SOURCES = $(runtime_files)
+libgo_ldflags = \
-libgo_la_LDFLAGS = \
 	-version-info $(libtool_VERSION) $(PTHREAD_CFLAGS) $(AM_LDFLAGS)
 
-libgo_la_LIBADD = \
+libgo_libadd = \
 	$(libgo_go_objs) ../libbacktrace/libbacktrace.la \
 	$(LIBATOMIC) $(LIBFFI) $(PTHREAD_LIBS) $(MATH_LIBS) $(NET_LIBS)
 
+libgo_la_SOURCES = $(runtime_files)
+libgo_la_LDFLAGS = $(libgo_ldflags)
+libgo_la_LIBADD = $(libgo_libadd)
+libgo_llgo_la_SOURCES = $(runtime_files)
+libgo_llgo_la_LDFLAGS = $(libgo_ldflags)
+libgo_llgo_la_LIBADD = $(libgo_libadd)
 libgobegin_a_SOURCES = \
 	runtime/go-main.c
 
+libgobegin_llgo_a_SOURCES = \
+	runtime/go-main.c
+
 LTLDFLAGS = $(shell $(SHELL) $(top_srcdir)/../libtool-ldflags $(LDFLAGS))
 AM_GOCFLAGS = $(STRINGOPS_FLAG)
 GOCOMPILE = $(GOC) $(DEFAULT_INCLUDES) $(INCLUDES) $(AM_GOCFLAGS) $(GOCFLAGS)
@@ -2126,35 +2152,20 @@ CHECK = \
 
 
 # Build all packages before checking any.
-CHECK_DEPS = libgo.la libgobegin.a \
+CHECK_DEPS = $(toolexeclibgo_DATA) $(toolexeclibgoarchive_DATA) \
-	$(toolexeclibgo_DATA) \
+	$(toolexeclibgocompress_DATA) $(toolexeclibgocontainer_DATA) \
-	$(toolexeclibgoarchive_DATA) \
+	$(toolexeclibgocrypto_DATA) $(toolexeclibgodebug_DATA) \
-	$(toolexeclibgocompress_DATA) \
+	$(toolexeclibgoencoding_DATA) $(toolexeclibgoexp_DATA) \
-	$(toolexeclibgocontainer_DATA) \
+	$(toolexeclibgogo_DATA) $(toolexeclibgohash_DATA) \
-	$(toolexeclibgocrypto_DATA) \
+	$(toolexeclibgoimage_DATA) $(toolexeclibgoindex_DATA) \
-	$(toolexeclibgodebug_DATA) \
+	$(toolexeclibgoio_DATA) $(toolexeclibgolog_DATA) \
-	$(toolexeclibgoencoding_DATA) \
+	$(toolexeclibgomath_DATA) $(toolexeclibgomime_DATA) \
-	$(toolexeclibgoexp_DATA) \
+	$(toolexeclibgonet_DATA) $(toolexeclibgonethttp_DATA) \
-	$(toolexeclibgogo_DATA) \
+	$(toolexeclibgoos_DATA) $(toolexeclibgopath_DATA) \
-	$(toolexeclibgohash_DATA) \
+	$(toolexeclibgorpc_DATA) $(toolexeclibgoruntime_DATA) \
-	$(toolexeclibgoimage_DATA) \
+	$(toolexeclibgosync_DATA) $(toolexeclibgotesting_DATA) \
-	$(toolexeclibgoindex_DATA) \
+	$(toolexeclibgotext_DATA) $(toolexeclibgotexttemplate_DATA) \
-	$(toolexeclibgoio_DATA) \
+	$(toolexeclibgounicode_DATA) $(am__append_1) $(am__append_2)
-	$(toolexeclibgolog_DATA) \
-	$(toolexeclibgomath_DATA) \
-	$(toolexeclibgomime_DATA) \
-	$(toolexeclibgonet_DATA) \
-	$(toolexeclibgonethttp_DATA) \
-	$(toolexeclibgoos_DATA) \
-	$(toolexeclibgopath_DATA) \
-	$(toolexeclibgorpc_DATA) \
-	$(toolexeclibgoruntime_DATA) \
-	$(toolexeclibgosync_DATA) \
-	$(toolexeclibgotesting_DATA) \
-	$(toolexeclibgotext_DATA) \
-	$(toolexeclibgotexttemplate_DATA) \
-	$(toolexeclibgounicode_DATA)
-
 # At least for now, we need -static-libgo for this test, because
 # otherwise we can't get the line numbers.
 runtime_pprof_check_GOCFLAGS = -static-libgo
@@ -2380,6 +2391,10 @@ uninstall-toolexeclibLIBRARIES:
 
 clean-toolexeclibLIBRARIES:
 	-test -z "$(toolexeclib_LIBRARIES)" || rm -f $(toolexeclib_LIBRARIES)
+libgobegin-llgo.a: $(libgobegin_llgo_a_OBJECTS) $(libgobegin_llgo_a_DEPENDENCIES) 
+	-rm -f libgobegin-llgo.a
+	$(libgobegin_llgo_a_AR) libgobegin-llgo.a $(libgobegin_llgo_a_OBJECTS) $(libgobegin_llgo_a_LIBADD)
+	$(RANLIB) libgobegin-llgo.a
 libgobegin.a: $(libgobegin_a_OBJECTS) $(libgobegin_a_DEPENDENCIES) 
 	-rm -f libgobegin.a
 	$(libgobegin_a_AR) libgobegin.a $(libgobegin_a_OBJECTS) $(libgobegin_a_LIBADD)
@@ -2415,8 +2430,10 @@ clean-toolexeclibLTLIBRARIES:
 	  echo "rm -f \"$${dir}/so_locations\""; \
 	  rm -f "$${dir}/so_locations"; \
 	done
+libgo-llgo.la: $(libgo_llgo_la_OBJECTS) $(libgo_llgo_la_DEPENDENCIES) 
+	$(libgo_llgo_la_LINK) $(am_libgo_llgo_la_rpath) $(libgo_llgo_la_OBJECTS) $(libgo_llgo_la_LIBADD) $(LIBS)
 libgo.la: $(libgo_la_OBJECTS) $(libgo_la_DEPENDENCIES) 
-	$(libgo_la_LINK) -rpath $(toolexeclibdir) $(libgo_la_OBJECTS) $(libgo_la_LIBADD) $(LIBS)
+	$(libgo_la_LINK) $(am_libgo_la_rpath) $(libgo_la_OBJECTS) $(libgo_la_LIBADD) $(LIBS)
 
 mostlyclean-compile:
 	-rm -f *.$(OBJEXT)

libgo/configure

@@ -616,6 +616,8 @@ PTHREAD_LIBS
 PTHREAD_CFLAGS
 NET_LIBS
 MATH_LIBS
+GOC_IS_LLGO_FALSE
+GOC_IS_LLGO_TRUE
 USING_SPLIT_STACK_FALSE
 USING_SPLIT_STACK_TRUE
 SPLIT_STACK
@@ -11117,7 +11119,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11120 "configure"
+#line 11122 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -11223,7 +11225,7 @@ else
   lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
   lt_status=$lt_dlunknown
   cat > conftest.$ac_ext <<_LT_EOF
-#line 11226 "configure"
+#line 11228 "configure"
 #include "confdefs.h"
 
 #if HAVE_DLFCN_H
@@ -14014,6 +14016,27 @@ $as_echo "#define LINKER_SUPPORTS_SPLIT_STACK 1" >>confdefs.h
 
 fi
 
+{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether compiler is llgo" >&5
+$as_echo_n "checking whether compiler is llgo... " >&6; }
+if test "${libgo_cv_c_goc_is_llgo+set}" = set; then :
+  $as_echo_n "(cached) " >&6
+else
+  libgo_cv_c_goc_is_llgo=no
+if $GOC -dumpversion 2>/dev/null | grep llgo >/dev/null 2>&1; then
+  libgo_cv_c_goc_is_llgo=yes
+fi
+fi
+{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $libgo_cv_c_goc_is_llgo" >&5
+$as_echo "$libgo_cv_c_goc_is_llgo" >&6; }
+ if test "$libgo_cv_c_goc_is_llgo" = yes; then
+  GOC_IS_LLGO_TRUE=
+  GOC_IS_LLGO_FALSE='#'
+else
+  GOC_IS_LLGO_TRUE='#'
+  GOC_IS_LLGO_FALSE=
+fi
+
+
 MATH_LIBS=
 { $as_echo "$as_me:${as_lineno-$LINENO}: checking for sqrt in -lm" >&5
 $as_echo_n "checking for sqrt in -lm... " >&6; }
@@ -15692,6 +15715,10 @@ if test -z "${USING_SPLIT_STACK_TRUE}" && test -z "${USING_SPLIT_STACK_FALSE}";
   as_fn_error "conditional \"USING_SPLIT_STACK\" was never defined.
 Usually this means the macro was only invoked conditionally." "$LINENO" 5
 fi
+if test -z "${GOC_IS_LLGO_TRUE}" && test -z "${GOC_IS_LLGO_FALSE}"; then
+  as_fn_error "conditional \"GOC_IS_LLGO\" was never defined.
+Usually this means the macro was only invoked conditionally." "$LINENO" 5
+fi
 
 if test -z "${HAVE_SYS_MMAN_H_TRUE}" && test -z "${HAVE_SYS_MMAN_H_FALSE}"; then
   as_fn_error "conditional \"HAVE_SYS_MMAN_H\" was never defined.

libgo/configure.ac

@@ -392,6 +392,14 @@ if test "$libgo_cv_c_linker_supports_split_stack" = yes; then
 	    [Define if the linker support split stack adjustments])
 fi
 
+AC_CACHE_CHECK([whether compiler is llgo],
+[libgo_cv_c_goc_is_llgo],
+[libgo_cv_c_goc_is_llgo=no
+if $GOC -dumpversion 2>/dev/null | grep llgo >/dev/null 2>&1; then
+  libgo_cv_c_goc_is_llgo=yes
+fi])
+AM_CONDITIONAL(GOC_IS_LLGO, test "$libgo_cv_c_goc_is_llgo" = yes)
+
 dnl Test for the -lm library.
 MATH_LIBS=
 AC_CHECK_LIB([m], [sqrt], MATH_LIBS=-lm)