ld/gold: Add link-time optimization plugin support

The binutils 2.22 ld.bfd and ld.gold linkers were not configured to support
link-time optimization plugins (-plugin switch) previously.  This changeset
adds -plugin support to both linkers.  The ld.bfd linker was previously
built statically, but it was necessary to change this to use the libc and
libz shared libraries because the -plugin option requires the dynamic
function dlopen().

The same update was not applied to binutils 2.21 linkers.

diff --git a/gnu/usr.bin/binutils222/ld/Makefile b/gnu/usr.bin/binutils222/ld/Makefile
index 051b211..9aa6be6 100644 (file)
--- a/gnu/usr.bin/binutils222/ld/Makefile
+++ b/gnu/usr.bin/binutils222/ld/Makefile
@@ -23,7 +23,8 @@ SRCS+=        ldgram.y        \
        ldver.c         \
        ldmisc.c        \
        ldfile.c        \
-       ldcref.c
+       ldcref.c        \
+       plugin.c
 
 SRCS+= ldemul-list.h
 
@@ -32,7 +33,10 @@ CFLAGS+= -DSCRIPTDIR=\"${TOOLS_PREFIX}${LIBEXEC_BINUTILS}\"
 CFLAGS+= -I${SRCDIR}/ld -I${SRCDIR}/bfd -I${.OBJDIR}/../libbfd
 CFLAGS+= -DBINDIR=\"${TOOLS_PREFIX}${LIBEXEC_BINUTILS}\"
 CFLAGS+= -DTOOLBINDIR=\"${TOOLS_PREFIX}${LIBEXEC_BINUTILS}\"
-NOSHARED?= yes
+CFLAGS+= -DENABLE_PLUGINS -DHAVE_CONFIG_H
+# link-time optimization requires dlopen() which means ld cannot be built
+# statically (e.g. NOSHARED=yes) and also support -plugin.
+#NOSHARED?= yes
 
 CLEANDIRS+=    ldscripts tmpdir
 CLEANFILES+=   ldemul-list.h stringify.sed

diff --git a/gnu/usr.bin/binutils222/ld/config.h b/gnu/usr.bin/binutils222/ld/config.h
index 8fde17d..b7cdac8 100644 (file)
--- a/gnu/usr.bin/binutils222/ld/config.h
+++ b/gnu/usr.bin/binutils222/ld/config.h
@@ -63,7 +63,7 @@
 #define HAVE_GLOB 1
 
 /* Define .init_array/.fini_array sections are available and working. */
-/* #undef HAVE_INITFINI_ARRAY */
+#define HAVE_INITFINI_ARRAY 1
 
 /* Define to 1 if you have the <inttypes.h> header file. */
 #define HAVE_INTTYPES_H 1

diff --git a/gnu/usr.bin/binutils222/libgold/config.h b/gnu/usr.bin/binutils222/libgold/config.h
index 2d6ba20..3d463f6 100644 (file)
--- a/gnu/usr.bin/binutils222/libgold/config.h
+++ b/gnu/usr.bin/binutils222/libgold/config.h
@@ -9,7 +9,7 @@
 /* #undef ENABLE_NLS */
 
 /* Define to enable linker plugins */
-/* #undef ENABLE_PLUGINS */
+#define ENABLE_PLUGINS 1
 
 /* Define to do multi-threaded linking */
 /* #undef ENABLE_THREADS */