diff options
Diffstat (limited to 'makefile')
| -rw-r--r-- | makefile | 79 |
1 files changed, 49 insertions, 30 deletions
@@ -12,28 +12,6 @@ this-makefile = $(lastword $(MAKEFILE_LIST)) srctree = $(realpath $(dir $(this-makefile))) .DEFAULT_GOAL := all -LLVM ?= 1 -ifneq ($(LLVM),1) - ifneq ($(filter %/,$(LLVM)),) - LLVM_PREFIX = $(LLVM) - else ifneq ($(filter -%,$(LLVM)),) - LLVM_SUFFIX = $(LLVM) - endif -endif - -# Variables -ifeq ($(LLVM),1) - CC = $(LLVM_PREFIX)clang$(LLVM_SUFFIX) - LD = $(LLVM_PREFIX)ld.lld$(LLVM_SUFFIX) - AR = $(LLVM_PREFIX)llvm-ar$(LLVM_SUFFIX) - STRIP = $(LLVM_PREFIX)llvm-strip$(LLVM_SUFFIX) -else - CC = $(CROSS_COMPILE)gcc - LD = $(CROSS_COMPILE)ld - AR = $(CROSS_COMPILE)ar - STRIP = $(CROSS_COMPILE)strip -endif - ifndef ARCH ARCH := x86_64 endif @@ -65,7 +43,25 @@ KCONFIG_CONFIG ?= .config -include ${KCONFIG_CONFIG} -# CFLAGS +ifneq ($(CONFIG_LLVM),1) + ifneq ($(filter %/,$(LLVM)),) + LLVM_PREFIX = $(LLVM) + else ifneq ($(filter -%,$(LLVM)),) + LLVM_SUFFIX = $(LLVM) + endif +endif + +ifeq ($(CONFIG_LLVM),1) + CC = $(LLVM_PREFIX)clang$(LLVM_SUFFIX) + LD = $(LLVM_PREFIX)ld.lld$(LLVM_SUFFIX) + AR = $(LLVM_PREFIX)llvm-ar$(LLVM_SUFFIX) + STRIP = $(LLVM_PREFIX)llvm-strip$(LLVM_SUFFIX) +else + CC = $(CROSS_COMPILE)gcc + LD = $(CROSS_COMPILE)ld + AR = $(CROSS_COMPILE)ar + STRIP = $(CROSS_COMPILE)strip +endif KBUILD_CFLAGS := -x c @@ -99,9 +95,9 @@ endif KBUILD_LDFLAGS := KBUILD_ASFLAGS := ifeq ($(CONFIG_DEBUG),y) -KBUILD_CFLAGS += -g -O0 -fno-omit-frame-pointer -fno-stack-protector +KBUILD_CFLAGS += -g else -KBUILD_CFLAGS += -O2 -fdata-sections -ffunction-sections +KBUILD_CFLAGS += -fdata-sections -ffunction-sections KBUILD_CFLAGS += -fno-unwind-tables -fomit-frame-pointer KBUILD_CFLAGS += -flto @@ -121,21 +117,41 @@ KBUILD_ASFLAGS += -target $(ARCH)-linux-eabi KBUILD_ASFLAGS += -I$(srctree)/include KUILD_ASFLAGS += -I$(srctree)/include/arch/$(ARCH) +ifdef CONFIG_OPTIMIZATION_LEVEL_O0 +KBUILD_CFLAGS += -O0 +else ifdef CONFIG_OPTIMIZATION_LEVEL_G +KBUILD_CFLAGS += -Og +else ifdef CONFIG_OPTIMIZATION_LEVEL_O1 +KBUILD_CFLAGS += -O1 +else ifdef CONFIG_OPTIMIZATION_LEVEL_O2 +KBUILD_CFLAGS += -O2 +else ifdef CONFIG_OPTIMIZATION_LEVEL_O3 +KBUILD_CFLAGS += -O3 +else ifdef CONFIG_OPTIMIZATION_LEVEL_Os +KBUILD_CFLAGS += -Os +else ifdef CONFIG_OPTIMIZATION_LEVEL_Oz +KBUILD_CFLAGS += -Oz +else ifdef CONFIG_OPTIMIZATION_LEVEL_FAST +KBUILD_CFLAGS += -Ofast +endif + PHONY := export Q srctree MAKEFLAGS KCONFIG_CONFIG \ KBUILD_CFLAGS KBUILD_ASFLAGS KBUILD_LDFLAGS PHONY += install -all: compile_commands.json +all: $(Q)$(MAKE) -f scripts/makefile.build obj=$(obj) PHONY += install install: all $(Q)$(MAKE) -f scripts/makefile.build obj=$(obj) install +ifdef CONFIG_LIB_LIBC_HEADERS mkdir -p $(O)/usr cp -r $(srctree)/include $(O)/usr/ rm -rf $(O)/usr/include/arch $(O)/usr/include/generated ${O}/usr/include/config +endif PHONY += clean clean: @@ -162,13 +178,16 @@ PHONY += help help: @echo "Available make targets:" @echo " all - Build the project (default)" - @echo " install - Install the built files" + @echo " clang-format - Format source files using clang-format" + @echo " clang-tidy - Run clang-tidy on the source files" @echo " clean - Clean build files" @echo " distclean - Clean all generated files" - @echo " menuconfig - Launch the menu-based configuration tool" @echo " include-what-you-use - Run include-what-you-use on the source files" - @echo " clang-tidy - Run clang-tidy on the source files" - @echo " clang-format - Format source files using clang-format" + @echo " install - Install the built files" + @echo " menuconfig - Launch the menu-based configuration tool" + @echo "Flags:" + @echo " o=<dir>/ - Destination directory" + @echo " obj=<dir>/ - Build single target" compile_commands.json: $(Q)bear -- $(MAKE) -f scripts/makefile.build obj=$(obj) all |