Patch set updated for coreboot: 9001181 build: Use clang driver to invocate linker and link compiler-rt

[Edward O'Callaghan]

Edward O'Callaghan ([e-mail]) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/5823

-gerrit

commit 900118127bc669ca349747446f35f87b9a13a30b
Author: Edward O'Callaghan 
Date:   Fri May 23 10:57:52 2014 +1000

build: Use clang driver to invocate linker and link compiler-rt

NOTFORMERGE: This does not _yet_ work with the current clang driver,
    pending upstream fixes. ***

Let the Clang driver frontend invocate the correct target linker and
    runtime symbols from compiler-rt.

*** Requires at least clang 3.5.0 r211866.

Change-Id: I8b5a824eab98568a77df82596c175a8f0129c5e7
    Signed-off-by: Edward O'Callaghan 
---
 Makefile                  | 2 +-
 src/arch/x86/Makefile.inc | 6 +++---
 2 files changed, 4 insertions(+), 4 deletions(-)

diff --git a/Makefile b/Makefile
index 195bfe6..f9cacfc 100644
--- a/Makefile
+++ b/Makefile
@@ -109,7 +109,7 @@ include $(HAVE_DOTCONFIG)

ifeq ($(CONFIG_COMPILER_LLVM_CLANG),y)
 # FIXME: armv7/aarch64 won't build right now
-CFLAGS_x86_32 = -no-integrated-as -Qunused-arguments -target i386-elf -m32
+CFLAGS_x86_32 = -no-integrated-as -Qunused-arguments -target i386-elf -m32 -rtlib=compiler-rt
 CC_x86_32:=clang

ifneq ($(CONFIG_MMX),y)
diff --git a/src/arch/x86/Makefile.inc b/src/arch/x86/Makefile.inc
index 125e9de..e92340e 100644
--- a/src/arch/x86/Makefile.inc
+++ b/src/arch/x86/Makefile.inc
@@ -209,7 +209,7 @@ romstage-libs ?=
 $(objcbfs)/romstage_null.debug: $$(romstage-objs) $(objgenerated)/romstage_null.ld $$(romstage-libs)
    @printf "    LINK       $(subst $(obj)/,,$(@))\n"
 ifeq ($(CONFIG_COMPILER_LLVM_CLANG),y)
-	$(LD_romstage) -nostdlib -nostartfiles -static -o $@ -L$(obj) --start-group $(romstage-objs) $(romstage-libs) $(LIBGCC_FILE_NAME_romstage) --end-group -T $(objgenerated)/romstage_null.ld
+	$(CC_romstage) $(CFLAGS_romstage) -Wl,-nostdlib -Wl,-nostartfiles -static -o $@ -L$(obj) -Wl,--start-group $(romstage-objs) $(romstage-libs) -Wl,--end-group -Wl,-T $(objgenerated)/romstage_null.ld
 else
    $(CC_romstage) $(CFLAGS_romstage) -nostdlib -nostartfiles -static -o $@ -L$(obj) -T $(objgenerated)/romstage_null.ld -Wl,--wrap,__divdi3 -Wl,--wrap,__udivdi3 -Wl,--wrap,__moddi3 -Wl,--wrap,__umoddi3 -Wl,--start-group $(romstage-objs) $(romstage-libs) $(LIBGCC_FILE_NAME_romstage) -Wl,--end-group
 endif
@@ -221,7 +221,7 @@ endif
 $(objcbfs)/romstage_xip.debug: $$(romstage-objs) $(objgenerated)/romstage_xip.ld $$(romstage-libs)
    @printf "    LINK       $(subst $(obj)/,,$(@))\n"
 ifeq ($(CONFIG_COMPILER_LLVM_CLANG),y)
-	$(LD_romstage) -nostdlib -nostartfiles -static -o $@ -L$(obj) --start-group $(romstage-objs) $(romstage-libs) $(LIBGCC_FILE_NAME_romstage) --end-group -T $(objgenerated)/romstage_xip.ld
+	$(CC_romstage) $(CFLAGS_romstage) -Wl,-nostdlib -Wl,-nostartfiles -static -o $@ -L$(obj) -Wl,--start-group $(romstage-objs) $(romstage-libs) -Wl,--end-group -Wl,-T $(objgenerated)/romstage_xip.ld
 else
    $(CC_romstage) $(CFLAGS_romstage) -nostdlib -nostartfiles -static -o $@ -L$(obj) -T $(objgenerated)/romstage_xip.ld -Wl,--wrap,__divdi3 -Wl,--wrap,__udivdi3 -Wl,--wrap,__moddi3 -Wl,--wrap,__umoddi3 -Wl,--start-group $(romstage-objs) $(romstage-libs) $(LIBGCC_FILE_NAME_romstage) -Wl,--end-group
 endif
@@ -332,7 +332,7 @@ endif
 $(objgenerated)/ramstage.o: $$(ramstage-objs) $(LIBGCC_FILE_NAME_ramstage) $$(ramstage-libs)
    @printf "    CC         $(subst $(obj)/,,$(@))\n"
 ifeq ($(CONFIG_COMPILER_LLVM_CLANG),y)
-	$(LD_ramstage) -m elf_i386 -r -o $@ --start-group $(ramstage-objs) $(ramstage-libs) $(LIBGCC_FILE_NAME_ramstage) --end-group
+	$(CC_ramstage) $(CFLAGS_ramstage) -Wl,-nostdlib -r -o $@ -Wl,--start-group $(ramstage-objs) $(ramstage-libs) -Wl,--end-group
 else
    $(CC_ramstage) $(CFLAGS_ramstage) -nostdlib -r -o $@ -Wl,--wrap,__divdi3 -Wl,--wrap,__udivdi3 -Wl,--wrap,__moddi3 -Wl,--wrap,__umoddi3 -Wl,--start-group $(ramstage-objs) $(ramstage-libs) $(LIBGCC_FILE_NAME_ramstage) -Wl,--end-group
 endif