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Build: Pass --gc-sections to the linker in all builds.

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This removes unused sections from the output and reduces the binary size
of everything we compile.
This commit is contained in:
Andreas Kling 2019-04-23 21:37:10 +02:00
parent f042b3adeb
commit f3754b8429
2 changed files with 3 additions and 4 deletions
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5
Kernel/Makefile
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@ -82,8 +82,7 @@ OBJS = $(CXX_OBJS) Boot/boot.ao
KERNEL = kernel KERNEL = kernel
CXXFLAGS += -ffreestanding -mregparm=3 -mno-80387 -mno-mmx -mno-sse -mno-sse2 CXXFLAGS += -ffreestanding -mregparm=3 -mno-80387 -mno-mmx -mno-sse -mno-sse2
DEFINES += -DKERNEL DEFINES += -DKERNEL
LD = i686-pc-serenity-ld LDFLAGS += -Ttext 0x10000 -Wl,-T linker.ld -nostdlib
LDFLAGS += -T linker.ld
all: $(KERNEL) kernel.map all: $(KERNEL) kernel.map
@ -91,7 +90,7 @@ kernel.map: kernel
@echo "MKMAP $@"; sh mkmap.sh @echo "MKMAP $@"; sh mkmap.sh
$(KERNEL): $(OBJS) $(KERNEL): $(OBJS)
@echo "LD $@"; $(LD) $(LDFLAGS) -o $@ -Ttext 0x10000 $(OBJS) @echo "LD $@"; $(LD) $(LDFLAGS) -o $@ $(OBJS)
.cpp.o: .cpp.o:
@echo "CXX $<"; $(CXX) $(CXXFLAGS) -o $@ -c $< @echo "CXX $<"; $(CXX) $(CXXFLAGS) -o $@ -c $<

2
Makefile.common
View file

@ -8,7 +8,7 @@ MAKEFILE_PATH := $(abspath $(lastword $(MAKEFILE_LIST)))
SERENITY_BASE_DIR := $(patsubst %/,%,$(dir $(MAKEFILE_PATH))) SERENITY_BASE_DIR := $(patsubst %/,%,$(dir $(MAKEFILE_PATH)))
INCLUDE_FLAGS = -I$(SERENITY_BASE_DIR) -I. -I$(SERENITY_BASE_DIR)/LibC -I$(SERENITY_BASE_DIR)/Servers INCLUDE_FLAGS = -I$(SERENITY_BASE_DIR) -I. -I$(SERENITY_BASE_DIR)/LibC -I$(SERENITY_BASE_DIR)/Servers
LDFLAGS = -L$(SERENITY_BASE_DIR)/LibC -L$(SERENITY_BASE_DIR)/LibCore -L$(SERENITY_BASE_DIR)/LibM -L$(SERENITY_BASE_DIR)/LibGUI LDFLAGS = -L$(SERENITY_BASE_DIR)/LibC -L$(SERENITY_BASE_DIR)/LibCore -L$(SERENITY_BASE_DIR)/LibM -L$(SERENITY_BASE_DIR)/LibGUI -Wl,--gc-sections
CLANG_FLAGS = -Wconsumed -m32 -ffreestanding -march=i686 CLANG_FLAGS = -Wconsumed -m32 -ffreestanding -march=i686
#SUGGEST_FLAGS = -Wsuggest-final-types -Wsuggest-final-methods -Wsuggest-override #-Wsuggest-attribute=noreturn #SUGGEST_FLAGS = -Wsuggest-final-types -Wsuggest-final-methods -Wsuggest-override #-Wsuggest-attribute=noreturn
DEFINES = -DSANITIZE_PTRS DEFINES = -DSANITIZE_PTRS