| LOCAL_MAKEFILE:=$(MAKEFILE_LIST) |
| |
| BUILDROOT ?= . |
| |
| ifeq ($(MAKECMDGOALS),spotless) |
| spotless: |
| rm -rf -- "$(BUILDROOT)"/build-* |
| else |
| |
| ifndef LKROOT |
| $(error please define LKROOT to the root of the lk build system) |
| endif |
| |
| -include local.mk |
| include make/macros.mk |
| |
| # If one of our goals (from the commandline) happens to have a |
| # matching project/goal.mk, then we should re-invoke make with |
| # that project name specified... |
| |
| project-name := $(firstword $(MAKECMDGOALS)) |
| |
| ifneq ($(project-name),) |
| ifneq ($(strip $(foreach d,$(LKINC),$(wildcard $(d)/project/$(project-name).mk))),) |
| do-nothing := 1 |
| $(MAKECMDGOALS) _all: make-make |
| @: |
| make-make: |
| @PROJECT=$(project-name) $(MAKE) -rR -f $(LOCAL_MAKEFILE) $(filter-out $(project-name), $(MAKECMDGOALS)) |
| |
| .PHONY: make-make |
| endif |
| endif |
| |
| # some additional rules to print some help |
| include make/help.mk |
| |
| ifeq ($(do-nothing),) |
| |
| ifeq ($(PROJECT),) |
| |
| ifneq ($(DEFAULT_PROJECT),) |
| PROJECT := $(DEFAULT_PROJECT) |
| else |
| $(error No project specified. Use 'make list' for a list of projects or 'make help' for additional help) |
| endif |
| endif |
| |
| TEST_BUILD ?= |
| DEBUG ?= 2 |
| |
| BUILDDIR := $(BUILDROOT)/build-$(PROJECT) |
| OUTBIN := $(BUILDDIR)/lk.bin |
| OUTELF := $(BUILDDIR)/lk.elf |
| CONFIGHEADER := $(BUILDDIR)/config.h |
| |
| GLOBAL_KERNEL_INCLUDES := $(addsuffix /include,$(LKINC)) |
| # For backwards compatibility. |
| GLOBAL_KERNEL_INCLUDES += $(addsuffix /include/uapi/uapi,$(LKINC)) $(addsuffix /include/shared/lk,$(LKINC)) |
| GLOBAL_UAPI_INCLUDES := $(addsuffix /include/uapi,$(LKINC)) |
| GLOBAL_SHARED_INCLUDES := $(addsuffix /include/shared,$(LKINC)) |
| GLOBAL_USER_INCLUDES := $(addsuffix /include/user,$(LKINC)) |
| GLOBAL_INCLUDES := $(BUILDDIR) $(GLOBAL_UAPI_INCLUDES) $(GLOBAL_SHARED_INCLUDES) $(GLOBAL_KERNEL_INCLUDES) |
| GLOBAL_OPTFLAGS ?= $(ARCH_OPTFLAGS) |
| GLOBAL_COMPILEFLAGS := -g -finline -include $(CONFIGHEADER) |
| GLOBAL_COMPILEFLAGS += -Werror -Wall -Wsign-compare -Wno-multichar -Wno-unused-function -Wno-unused-label |
| GLOBAL_COMPILEFLAGS += -fno-short-enums -fno-common |
| GLOBAL_COMPILEFLAGS += -fno-omit-frame-pointer |
| GLOBAL_CFLAGS := --std=c11 -Wstrict-prototypes -Wwrite-strings |
| GLOBAL_CPPFLAGS := --std=c++11 -fno-exceptions -fno-rtti -fno-threadsafe-statics |
| # c99 array designators are not part of C++, but they are convenient and help avoid errors. |
| GLOBAL_CPPFLAGS += -Wno-c99-designator |
| #GLOBAL_CPPFLAGS += -Weffc++ |
| GLOBAL_ASMFLAGS := -DASSEMBLY |
| GLOBAL_LDFLAGS := |
| |
| GLOBAL_LDFLAGS += $(addprefix -L,$(LKINC)) |
| |
| # Architecture specific compile flags |
| ARCH_COMPILEFLAGS := |
| ARCH_CFLAGS := |
| ARCH_CPPFLAGS := |
| ARCH_ASMFLAGS := |
| |
| # top level rule |
| all:: $(OUTBIN) $(OUTELF).lst $(OUTELF).debug.lst $(OUTELF).sym $(OUTELF).sym.sorted $(OUTELF).size $(OUTELF).dump $(BUILDDIR)/srcfiles.txt $(BUILDDIR)/include_paths.txt |
| |
| # master module object list |
| ALLOBJS_MODULE := |
| |
| # master object list (for dep generation) |
| ALLOBJS := |
| |
| # master source file list |
| ALLSRCS := |
| |
| # a linker script needs to be declared in one of the project/target/platform files |
| LINKER_SCRIPT := |
| |
| # anything you add here will be deleted in make clean |
| GENERATED := $(CONFIGHEADER) |
| |
| # anything added to GLOBAL_DEFINES will be put into $(BUILDDIR)/config.h |
| GLOBAL_DEFINES := LK=1 __TRUSTY__=1 |
| |
| # Anything added to GLOBAL_SRCDEPS will become a dependency of every source file in the system. |
| # Useful for header files that may be included by one or more source files. |
| GLOBAL_SRCDEPS := $(CONFIGHEADER) |
| |
| # these need to be filled out by the project/target/platform rules.mk files |
| TARGET := |
| PLATFORM := |
| ARCH := |
| ALLMODULES := |
| |
| # add any external module dependencies |
| MODULES := $(EXTERNAL_MODULES) |
| |
| # any .mk specified here will be included before build.mk |
| EXTRA_BUILDRULES := |
| |
| # any rules you put here will also be built by the system before considered being complete |
| EXTRA_BUILDDEPS := |
| |
| # any rules you put here will be depended on in clean builds |
| EXTRA_CLEANDEPS := |
| |
| # any objects you put here get linked with the final image |
| EXTRA_OBJS := |
| |
| # any extra linker scripts to be put on the command line |
| EXTRA_LINKER_SCRIPTS := |
| |
| # if someone defines this, the build id will be pulled into lib/version |
| BUILDID ?= |
| |
| # comment out or override if you want to see the full output of each command |
| NOECHO ?= @ |
| |
| # default to building with clang |
| CLANGBUILD ?= true |
| override CLANGBUILD := $(call TOBOOL,$(CLANGBUILD)) |
| |
| ifeq ($(call TOBOOL,$(CLANGBUILD)), true) |
| GLOBAL_COMPILEFLAGS += -Wimplicit-fallthrough |
| endif |
| # VLAs can have subtle security bugs and assist exploits, so ban them. |
| GLOBAL_COMPILEFLAGS += -Wvla |
| |
| # try to include the project file |
| -include project/$(PROJECT).mk |
| ifndef TARGET |
| $(error couldn't find project or project doesn't define target) |
| endif |
| include target/$(TARGET)/rules.mk |
| ifndef PLATFORM |
| $(error couldn't find target or target doesn't define platform) |
| endif |
| include platform/$(PLATFORM)/rules.mk |
| |
| $(info PROJECT = $(PROJECT)) |
| $(info PLATFORM = $(PLATFORM)) |
| $(info TARGET = $(TARGET)) |
| |
| # Derive the standard arch name. |
| $(eval $(call standard_name_for_arch,STANDARD_ARCH_NAME,$(ARCH),$(SUBARCH))) |
| |
| include arch/$(ARCH)/rules.mk |
| include top/rules.mk |
| |
| # recursively include any modules in the MODULE variable, leaving a trail of included |
| # modules in the ALLMODULES list |
| include make/recurse.mk |
| |
| # any extra top level build dependencies that someone declared |
| all:: $(EXTRA_BUILDDEPS) |
| |
| # add some automatic configuration defines |
| GLOBAL_DEFINES += \ |
| PROJECT_$(PROJECT)=1 \ |
| PROJECT=\"$(PROJECT)\" \ |
| TARGET_$(TARGET)=1 \ |
| TARGET=\"$(TARGET)\" \ |
| PLATFORM_$(PLATFORM)=1 \ |
| PLATFORM=\"$(PLATFORM)\" \ |
| ARCH_$(ARCH)=1 \ |
| ARCH=\"$(ARCH)\" \ |
| $(addsuffix =1,$(addprefix WITH_,$(ALLMODULES))) |
| |
| # debug build? |
| ifneq ($(DEBUG),) |
| GLOBAL_DEFINES += \ |
| LK_DEBUGLEVEL=$(DEBUG) |
| endif |
| |
| # test build? |
| ifneq ($(TEST_BUILD),) |
| GLOBAL_DEFINES += \ |
| TEST_BUILD=1 |
| endif |
| |
| # ASLR |
| ifneq ($(ASLR),false) |
| GLOBAL_DEFINES += \ |
| ASLR=1 |
| endif |
| |
| # allow additional defines from outside the build system |
| ifneq ($(EXTERNAL_DEFINES),) |
| GLOBAL_DEFINES += $(EXTERNAL_DEFINES) |
| $(info EXTERNAL_DEFINES = $(EXTERNAL_DEFINES)) |
| endif |
| |
| |
| # prefix all of the paths in GLOBAL_INCLUDES with -I |
| GLOBAL_INCLUDES := $(addprefix -I,$(GLOBAL_INCLUDES)) |
| |
| # test for some old variables |
| ifneq ($(INCLUDES),) |
| $(error INCLUDES variable set, please move to GLOBAL_INCLUDES: $(INCLUDES)) |
| endif |
| ifneq ($(DEFINES),) |
| $(error DEFINES variable set, please move to GLOBAL_DEFINES: $(DEFINES)) |
| endif |
| |
| # default to no ccache |
| CCACHE ?= |
| ifeq ($(call TOBOOL,$(CLANGBUILD)), true) |
| ifeq ($(CLANG_BINDIR),) |
| $(error clang directory not specified, please set CLANG_BINDIR) |
| endif |
| CC := $(CCACHE) $(CLANG_BINDIR)/clang |
| else |
| CC := $(CCACHE) $(TOOLCHAIN_PREFIX)gcc |
| endif |
| LD := $(CLANG_BINDIR)/ld.lld |
| AR := $(TOOLCHAIN_PREFIX)ar |
| OBJDUMP := $(TOOLCHAIN_PREFIX)objdump |
| OBJCOPY := $(TOOLCHAIN_PREFIX)objcopy |
| CPPFILT := $(TOOLCHAIN_PREFIX)c++filt |
| SIZE := $(TOOLCHAIN_PREFIX)size |
| NM := $(TOOLCHAIN_PREFIX)nm |
| STRIP := $(TOOLCHAIN_PREFIX)strip |
| |
| # TODO: we could find the runtime like this. |
| # LIBGCC := $(shell $(CC) $(GLOBAL_COMPILEFLAGS) $(ARCH_COMPILEFLAGS) $(THUMBCFLAGS) --rtlib=compiler-rt -print-libgcc-file-name) |
| # However the compiler currently does not contain non-x86 prebuilts for the |
| # linux-gnu ABI. We could either get those prebuilts added to the toolchain or |
| # switch to the android ABI. |
| # Note there are two copies of compiler-rt in the toolchain - framework and NDK. |
| # We're using the NDK version because the path is more stable and the difference |
| # should not matter for this library. (The main difference is which version of |
| # libcxx they link against, and the builtins do not use C++.) |
| LIBGCC := $(CLANG_BINDIR)/../runtimes_ndk_cxx/libclang_rt.builtins-$(STANDARD_ARCH_NAME)-android.a |
| |
| # try to have the compiler output colorized error messages if available |
| export GCC_COLORS ?= 1 |
| |
| # the logic to compile and link stuff is in here |
| include make/build.mk |
| |
| DEPS := $(ALLOBJS:%o=%d) |
| |
| # put all of the global build flags in config.h to force a rebuild if any change |
| GLOBAL_DEFINES += GLOBAL_INCLUDES=\"$(subst $(SPACE),_,$(GLOBAL_INCLUDES))\" |
| GLOBAL_DEFINES += GLOBAL_COMPILEFLAGS=\"$(subst $(SPACE),_,$(GLOBAL_COMPILEFLAGS))\" |
| GLOBAL_DEFINES += GLOBAL_OPTFLAGS=\"$(subst $(SPACE),_,$(GLOBAL_OPTFLAGS))\" |
| GLOBAL_DEFINES += GLOBAL_CFLAGS=\"$(subst $(SPACE),_,$(GLOBAL_CFLAGS))\" |
| GLOBAL_DEFINES += GLOBAL_CPPFLAGS=\"$(subst $(SPACE),_,$(GLOBAL_CPPFLAGS))\" |
| GLOBAL_DEFINES += GLOBAL_ASMFLAGS=\"$(subst $(SPACE),_,$(GLOBAL_ASMFLAGS))\" |
| GLOBAL_DEFINES += GLOBAL_LDFLAGS=\"$(subst $(SPACE),_,$(GLOBAL_LDFLAGS))\" |
| GLOBAL_DEFINES += ARCH_COMPILEFLAGS=\"$(subst $(SPACE),_,$(ARCH_COMPILEFLAGS))\" |
| GLOBAL_DEFINES += ARCH_CFLAGS=\"$(subst $(SPACE),_,$(ARCH_CFLAGS))\" |
| GLOBAL_DEFINES += ARCH_CPPFLAGS=\"$(subst $(SPACE),_,$(ARCH_CPPFLAGS))\" |
| GLOBAL_DEFINES += ARCH_ASMFLAGS=\"$(subst $(SPACE),_,$(ARCH_ASMFLAGS))\" |
| |
| ifneq ($(OBJS),) |
| $(warning OBJS=$(OBJS)) |
| $(error OBJS is not empty, please convert to new module format) |
| endif |
| ifneq ($(OPTFLAGS),) |
| $(warning OPTFLAGS=$(OPTFLAGS)) |
| $(error OPTFLAGS is not empty, please use GLOBAL_OPTFLAGS or MODULE_OPTFLAGS) |
| endif |
| ifneq ($(CFLAGS),) |
| $(warning CFLAGS=$(CFLAGS)) |
| $(error CFLAGS is not empty, please use GLOBAL_CFLAGS or MODULE_CFLAGS) |
| endif |
| ifneq ($(CPPFLAGS),) |
| $(warning CPPFLAGS=$(CPPFLAGS)) |
| $(error CPPFLAGS is not empty, please use GLOBAL_CPPFLAGS or MODULE_CPPFLAGS) |
| endif |
| |
| $(info LIBGCC = $(LIBGCC)) |
| $(info GLOBAL_COMPILEFLAGS = $(GLOBAL_COMPILEFLAGS)) |
| $(info GLOBAL_OPTFLAGS = $(GLOBAL_OPTFLAGS)) |
| |
| # make all object files depend on any targets in GLOBAL_SRCDEPS |
| $(ALLOBJS): $(GLOBAL_SRCDEPS) |
| |
| clean: $(EXTRA_CLEANDEPS) |
| rm -f $(ALLOBJS) $(DEPS) $(GENERATED) $(OUTBIN) $(OUTELF) $(OUTELF).lst $(OUTELF).debug.lst $(OUTELF).sym $(OUTELF).sym.sorted $(OUTELF).size $(OUTELF).hex $(OUTELF).dump |
| |
| install: all |
| scp $(OUTBIN) 192.168.0.4:/tftproot |
| |
| # generate a config.h file with all of the GLOBAL_DEFINES laid out in #define format |
| configheader: |
| |
| $(CONFIGHEADER): configheader |
| @$(call MAKECONFIGHEADER,$@,GLOBAL_DEFINES) |
| |
| # Empty rule for the .d files. The above rules will build .d files as a side |
| # effect. Only works on gcc 3.x and above, however. |
| %.d: |
| |
| ifeq ($(filter $(MAKECMDGOALS), clean), ) |
| -include $(DEPS) |
| endif |
| |
| .PHONY: configheader |
| endif |
| |
| endif # make spotless |