[coreboot-gerrit] Patch set updated for coreboot: 84e21a0 build system: use archives, not linker action to shorten command lines
Patrick Georgi (pgeorgi@google.com)
gerrit at coreboot.org
Tue May 19 20:40:07 CEST 2015
Patrick Georgi (pgeorgi at google.com) just uploaded a new patch set to gerrit, which you can find at http://review.coreboot.org/10139
-gerrit
commit 84e21a0bd39f908342f727ff724139d567241653
Author: Patrick Georgi <pgeorgi at chromium.org>
Date: Thu May 7 22:24:41 2015 +0200
build system: use archives, not linker action to shorten command lines
Intermediate linking may distort linker behavior (in particular related to
weak symbols). The idea is that archives are closer to 'just a list of
object files', and ideally makes the linker more predictable.
Using --whole-archive, the linker doesn't optimize out object files just
because their symbols were already provided by weak versions. However it
shouldn't be used for libgcc, because that one has some unexpected side-effects.
Change-Id: Ie226c198a93bcdca2d82c02431c72108a1c6ea60
Signed-off-by: Patrick Georgi <pgeorgi at chromium.org>
---
Makefile.inc | 4 ++--
src/arch/arm/Makefile.inc | 8 ++++----
src/arch/arm64/Makefile.inc | 8 ++++----
src/arch/mips/Makefile.inc | 6 +++---
src/arch/riscv/Makefile.inc | 6 +++---
src/arch/x86/Makefile.inc | 6 +++---
src/cpu/x86/smm/Makefile.inc | 2 +-
src/lib/Makefile.inc | 2 +-
8 files changed, 21 insertions(+), 21 deletions(-)
diff --git a/Makefile.inc b/Makefile.inc
index a8961cc..277408f 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -115,8 +115,8 @@ files-in-dir=$(filter-out $(call dir-wildcards,$(call filter-out-dirs,$(1),$(sor
# directory into an intermediate file
ramstage-postprocess=$$(eval DEPENDENCIES+=$$(addsuffix .d,$$(basename $(1)))) \
$(foreach d,$(sort $(dir $(filter-out %.ld,$(1)))), \
- $(eval $(d)ramstage.o: $(call files-in-dir,$(d),$(filter-out %.ld,$(1))); $$(LD_ramstage) -o $$@ -r $$^ ) \
- $(eval ramstage-objs:=$(d)ramstage.o $(filter-out $(filter-out %.ld, $(call files-in-dir,$(d),$(1))),$(ramstage-objs))))
+ $(eval $(d)ramstage.a: $(call files-in-dir,$(d),$(filter-out %.ld,$(1))); rm -f $$@ && $(AR_ramstage) rcsT $$@ $$^ ) \
+ $(eval ramstage-objs:=$(d)ramstage.a $(filter-out $(filter-out %.ld, $(call files-in-dir,$(d),$(1))),$(ramstage-objs))))
bootblock-generic-ccopts += -D__PRE_RAM__ -D__BOOTBLOCK__
romstage-generic-ccopts += -D__PRE_RAM__ -D__ROMSTAGE__
diff --git a/src/arch/arm/Makefile.inc b/src/arch/arm/Makefile.inc
index 0fd4fed..8d6abb4 100644
--- a/src/arch/arm/Makefile.inc
+++ b/src/arch/arm/Makefile.inc
@@ -63,7 +63,7 @@ bootblock-y += clock.c
$(objcbfs)/bootblock.debug: $$(bootblock-objs)
@printf " LINK $(subst $(obj)/,,$(@))\n"
- $(LD_bootblock) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.bootblock.ld --start-group $(filter-out %.ld,$(bootblock-objs)) --end-group
+ $(LD_bootblock) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.bootblock.ld --whole-archive --start-group $(filter-out %.ld,$(bootblock-objs)) --end-group
endif # CONFIG_ARCH_BOOTBLOCK_ARM
@@ -75,7 +75,7 @@ ifeq ($(CONFIG_ARCH_VERSTAGE_ARM),y)
$(objcbfs)/verstage.debug: $(objgenerated)/libverstage.a $$(verstage-objs)
@printf " LINK $(subst $(obj)/,,$(@))\n"
- $(LD_verstage) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.verstage.ld --start-group $(filter-out %.ld,$(verstage-objs)) $(objgenerated)/libverstage.a --end-group
+ $(LD_verstage) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.verstage.ld --whole-archive --start-group $(filter-out %.ld,$(verstage-objs)) $(objgenerated)/libverstage.a --end-group
verstage-y += boot.c
verstage-y += div0.c
@@ -110,7 +110,7 @@ VBOOT_STUB_DEPS += $(obj)/arch/arm/eabi_compat.rmodules_arm.o
$(objcbfs)/romstage.debug: $$(romstage-objs)
@printf " LINK $(subst $(obj)/,,$(@))\n"
- $(LD_romstage) -nostdlib --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.romstage.ld --start-group $(filter-out %.ld,$(romstage-objs)) --end-group
+ $(LD_romstage) -nostdlib --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.romstage.ld --whole-archive --start-group $(filter-out %.ld,$(romstage-objs)) --end-group
endif # CONFIG_ARCH_ROMSTAGE_ARM
@@ -139,6 +139,6 @@ ramstage-srcs += $(wildcard src/mainboard/$(MAINBOARDDIR)/mainboard.c)
$(objcbfs)/ramstage.debug: $$(ramstage-objs)
@printf " CC $(subst $(obj)/,,$(@))\n"
- $(LD_ramstage) -nostdlib --gc-sections -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.ramstage.ld --start-group $(filter-out %.ld,$(ramstage-objs)) --end-group
+ $(LD_ramstage) -nostdlib --gc-sections -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.ramstage.ld --whole-archive --start-group $(filter-out %.ld,$(ramstage-objs)) --end-group
endif # CONFIG_ARCH_RAMSTAGE_ARM
diff --git a/src/arch/arm64/Makefile.inc b/src/arch/arm64/Makefile.inc
index b14e69e..ad00afd 100644
--- a/src/arch/arm64/Makefile.inc
+++ b/src/arch/arm64/Makefile.inc
@@ -74,7 +74,7 @@ bootblock-y += ../../lib/memmove.c
$(objcbfs)/bootblock.debug: $$(bootblock-objs) $(obj)/config.h
@printf " LINK $(subst $(obj)/,,$(@))\n"
- $(LD_bootblock) --gc-sections -static -o $@ -L$(obj) --start-group $(filter-out %.ld,$(bootblock-objs)) --end-group -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.bootblock.ld
+ $(LD_bootblock) --gc-sections -static -o $@ -L$(obj) --whole-archive --start-group $(filter-out %.ld,$(bootblock-objs)) --end-group -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.bootblock.ld
endif # CONFIG_ARCH_BOOTBLOCK_ARM64
@@ -86,7 +86,7 @@ ifeq ($(CONFIG_ARCH_VERSTAGE_ARM64),y)
$(objcbfs)/verstage.debug: $(objgenerated)/libverstage.a $$(verstage-objs)
@printf " LINK $(subst $(obj)/,,$(@))\n"
- $(LD_verstage) --gc-sections -static -o $@ -L$(obj) --start-group $(objgenerated)/libverstage.a $$(verstage-objs) --end-group -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.verstage.ld
+ $(LD_verstage) --gc-sections -static -o $@ -L$(obj) --whole-archive --start-group $(objgenerated)/libverstage.a $$(verstage-objs) --end-group -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.verstage.ld
verstage-$(CONFIG_EARLY_CONSOLE) += early_console.c
verstage-y += boot.c
@@ -129,7 +129,7 @@ VBOOT_STUB_DEPS += $(obj)/arch/arm/eabi_compat.rmodules_arm64.o
$(objcbfs)/romstage.debug: $$(romstage-objs)
@printf " LINK $(subst $(obj)/,,$(@))\n"
- $(LD_romstage) -nostdlib --gc-sections -static -o $@ -L$(obj) --start-group $(filter-out %.ld,$(romstage-objs)) --end-group -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.romstage.ld
+ $(LD_romstage) -nostdlib --gc-sections -static -o $@ -L$(obj) --whole-archive --start-group $(filter-out %.ld,$(romstage-objs)) --end-group -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.romstage.ld
endif # CONFIG_ARCH_ROMSTAGE_ARM64
@@ -178,7 +178,7 @@ ramstage-srcs += $(wildcard src/mainboard/$(MAINBOARDDIR)/mainboard.c)
$(objcbfs)/ramstage.debug: $$(ramstage-objs)
@printf " CC $(subst $(obj)/,,$(@))\n"
- $(LD_ramstage) -nostdlib --gc-sections -o $@ -L$(obj) --start-group $(filter-out %.ld,$(ramstage-objs)) --end-group -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.ramstage.ld
+ $(LD_ramstage) -nostdlib --gc-sections -o $@ -L$(obj) --whole-archive --start-group $(filter-out %.ld,$(ramstage-objs)) --end-group -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.ramstage.ld
# Build ARM Trusted Firmware (BL31)
diff --git a/src/arch/mips/Makefile.inc b/src/arch/mips/Makefile.inc
index 358e71d..b92127a 100644
--- a/src/arch/mips/Makefile.inc
+++ b/src/arch/mips/Makefile.inc
@@ -51,7 +51,7 @@ bootblock-S-ccopts += -undef
$(objcbfs)/bootblock.debug: $$(bootblock-objs) $(obj)/config.h
@printf " LINK $(subst $(obj)/,,$(@))\n"
- $(LD_bootblock) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.bootblock.ld --start-group $(filter-out %.ld,$(bootblock-objs)) --end-group
+ $(LD_bootblock) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.bootblock.ld --whole-archive --start-group $(filter-out %.ld,$(bootblock-objs)) --end-group
endif # CONFIG_ARCH_BOOTBLOCK_MIPS
@@ -72,7 +72,7 @@ romstage-y += ../../lib/memset.c
$(objcbfs)/romstage.debug: $$(romstage-objs)
@printf " LINK $(subst $(obj)/,,$(@))\n"
- $(LD_romstage) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.romstage.ld --start-group $(filter-out %.ld,$(romstage-objs)) --end-group
+ $(LD_romstage) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.romstage.ld --whole-archive --start-group $(filter-out %.ld,$(romstage-objs)) --end-group
endif # CONFIG_ARCH_ROMSTAGE_MIPS
@@ -96,6 +96,6 @@ ramstage-srcs += $(wildcard src/mainboard/$(MAINBOARDDIR)/mainboard.c)
$(objcbfs)/ramstage.debug: $$(ramstage-objs)
@printf " CC $(subst $(obj)/,,$(@))\n"
- $(LD_ramstage) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.ramstage.ld --start-group $(filter-out %.ld,$(ramstage-objs)) --end-group
+ $(LD_ramstage) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.ramstage.ld --whole-archive --start-group $(filter-out %.ld,$(ramstage-objs)) --end-group
endif # CONFIG_ARCH_RAMSTAGE_MIPS
diff --git a/src/arch/riscv/Makefile.inc b/src/arch/riscv/Makefile.inc
index a0feb3d..a34b18d 100644
--- a/src/arch/riscv/Makefile.inc
+++ b/src/arch/riscv/Makefile.inc
@@ -41,7 +41,7 @@ bootblock-y += \
$(objcbfs)/bootblock.debug: $$(bootblock-objs)
@printf " LINK $(subst $(obj)/,,$(@))\n"
$(LD_bootblock) --gc-sections -static -o $@ -L$(obj) \
- -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.bootblock.ld --start-group $(filter-out %.ld,$(bootblock-objs)) \
+ -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.bootblock.ld --whole-archive --start-group $(filter-out %.ld,$(bootblock-objs)) \
$(LIBGCC_FILE_NAME_bootblock) --end-group
endif
@@ -67,7 +67,7 @@ romstage-$(CONFIG_COLLECT_TIMESTAMPS) += timestamp.c
$(objcbfs)/romstage.debug: $$(romstage-objs)
@printf " LINK $(subst $(obj)/,,$(@))\n"
- $(LD_romstage) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.romstage.ld --start-group $(filter-out %.ld,$(romstage-objs)) --end-group
+ $(LD_romstage) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.romstage.ld --whole-archive --start-group $(filter-out %.ld,$(romstage-objs)) --end-group
romstage-c-ccopts += $(riscv_flags)
romstage-S-ccopts += $(riscv_asm_flags)
@@ -105,7 +105,7 @@ ramstage-srcs += src/mainboard/$(MAINBOARDDIR)/mainboard.c
$(objcbfs)/ramstage.debug: $$(ramstage-objs)
@printf " CC $(subst $(obj)/,,$(@))\n"
- $(LD_ramstage) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.ramstage.ld --start-group $(filter-out %.ld,$(ramstage-objs)) --end-group
+ $(LD_ramstage) --gc-sections -static -o $@ -L$(obj) -T $(obj)/mainboard/$(MAINBOARDDIR)/memlayout.ramstage.ld --whole-archive --start-group $(filter-out %.ld,$(ramstage-objs)) --end-group
ramstage-c-ccopts += $(riscv_flags)
ramstage-S-ccopts += $(riscv_asm_flags)
diff --git a/src/arch/x86/Makefile.inc b/src/arch/x86/Makefile.inc
index 8b37d7a..659d006 100644
--- a/src/arch/x86/Makefile.inc
+++ b/src/arch/x86/Makefile.inc
@@ -202,7 +202,7 @@ romstage-libs ?=
$(objcbfs)/romstage_null.debug: $$(romstage-objs) $(objgenerated)/romstage_null.ld $$(romstage-libs)
@printf " LINK $(subst $(obj)/,,$(@))\n"
- $(LD_romstage) --gc-sections -nostdlib -nostartfiles -static -o $@ -L$(obj) $(COMPILER_RT_FLAGS_romstage) --start-group $(filter-out %.ld,$(romstage-objs)) $(romstage-libs) $(COMPILER_RT_romstage) --end-group -T $(objgenerated)/romstage_null.ld
+ $(LD_romstage) --gc-sections -nostdlib -nostartfiles -static -o $@ -L$(obj) $(COMPILER_RT_FLAGS_romstage) --whole-archive --start-group $(filter-out %.ld,$(romstage-objs)) $(romstage-libs) --no-whole-archive $(COMPILER_RT_romstage) --end-group -T $(objgenerated)/romstage_null.ld
$(OBJCOPY_romstage) --only-section .illegal_globals $(@) $(objcbfs)/romstage_null.offenders && \
$(NM_romstage) $(objcbfs)/romstage_null.offenders | grep -q ""; if [ $$? -eq 0 ]; then \
echo "Forbidden global variables in romstage:"; \
@@ -211,7 +211,7 @@ $(objcbfs)/romstage_null.debug: $$(romstage-objs) $(objgenerated)/romstage_null.
$(objcbfs)/romstage.debug: $$(romstage-objs) $(objgenerated)/romstage.ld $$(romstage-libs)
@printf " LINK $(subst $(obj)/,,$(@))\n"
- $(LD_romstage) --gc-sections -nostdlib -nostartfiles -static -o $@ -L$(obj) $(COMPILER_RT_FLAGS_romstage) --start-group $(filter-out %.ld,$(romstage-objs)) $(romstage-libs) $(COMPILER_RT_romstage) --end-group -T $(objgenerated)/romstage.ld
+ $(LD_romstage) --gc-sections -nostdlib -nostartfiles -static -o $@ -L$(obj) $(COMPILER_RT_FLAGS_romstage) --whole-archive --start-group $(filter-out %.ld,$(romstage-objs)) $(romstage-libs) --no-whole-archive $(COMPILER_RT_romstage) --end-group -T $(objgenerated)/romstage.ld
$(objgenerated)/romstage_null.ld: $(obj)/config.h $$(filter %.ld,$$(romstage-srcs))
@printf " GEN $(subst $(obj)/,,$(@))\n"
@@ -310,7 +310,7 @@ endif
$(objgenerated)/ramstage.o: $$(ramstage-objs) $(COMPILER_RT_ramstage) $$(ramstage-libs)
@printf " CC $(subst $(obj)/,,$(@))\n"
- $(LD_ramstage) -m elf_i386 -r -o $@ $(COMPILER_RT_FLAGS_ramstage) --start-group $(filter-out %.ld,$(ramstage-objs)) $(ramstage-libs) $(COMPILER_RT_ramstage) --end-group
+ $(LD_ramstage) -m elf_i386 -r -o $@ $(COMPILER_RT_FLAGS_ramstage) --whole-archive --start-group $(filter-out %.ld,$(ramstage-objs)) $(ramstage-libs) --no-whole-archive $(COMPILER_RT_ramstage) --end-group
endif # CONFIG_ARCH_RAMSTAGE_X86_32
diff --git a/src/cpu/x86/smm/Makefile.inc b/src/cpu/x86/smm/Makefile.inc
index a02be49..36f83c8 100644
--- a/src/cpu/x86/smm/Makefile.inc
+++ b/src/cpu/x86/smm/Makefile.inc
@@ -32,7 +32,7 @@ smm-generic-ccopts += -D__SMM__
smm-c-deps:=$$(OPTION_TABLE_H)
$(obj)/cpu/x86/smm/smm.o: $$(smm-objs) $(COMPILER_RT_smm)
- $(LD_smm) -nostdlib -r -o $@ $(COMPILER_RT_FLAGS_smm) --start-group $(smm-objs) $(COMPILER_RT_smm) --end-group
+ $(LD_smm) -nostdlib -r -o $@ $(COMPILER_RT_FLAGS_smm) --whole-archive --start-group $(smm-objs) --no-whole-archive $(COMPILER_RT_smm) --end-group
ifeq ($(CONFIG_SMM_MODULES),y)
diff --git a/src/lib/Makefile.inc b/src/lib/Makefile.inc
index 88254b9..b583e6d 100644
--- a/src/lib/Makefile.inc
+++ b/src/lib/Makefile.inc
@@ -191,7 +191,7 @@ RMODULE_LDFLAGS := -nostartfiles --gc-sections --emit-relocs -z defs -Bsymbolic
# rmdoule is named $(1).rmod
define rmodule_link
$(strip $(1)): $(strip $(2)) $$(COMPILER_RT_rmodules_$(4)) $(obj)/lib/rmodule.rmodules_$(4).ld | $$(RMODTOOL)
- $$(LD_rmodules_$(4)) $(RMODULE_LDFLAGS) -T $(obj)/lib/rmodule.rmodules_$(4).ld --defsym=__heap_size=$(strip $(3)) -o $$@ --start-group $(filter-out %.ld,$(2)) --end-group
+ $$(LD_rmodules_$(4)) $(RMODULE_LDFLAGS) -T $(obj)/lib/rmodule.rmodules_$(4).ld --defsym=__heap_size=$(strip $(3)) -o $$@ --whole-archive --start-group $(filter-out %.ld,$(2)) --end-group
$$(NM_rmodules_$(4)) -n $$@ > $$(basename $$@).map
$(strip $(1)).rmod: $(strip $(1))
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