diff options
Diffstat (limited to 'core/combo/linux-arm.mk')
| -rw-r--r-- | core/combo/linux-arm.mk | 154 |
1 files changed, 154 insertions, 0 deletions
diff --git a/core/combo/linux-arm.mk b/core/combo/linux-arm.mk new file mode 100644 index 0000000..507e4dd --- /dev/null +++ b/core/combo/linux-arm.mk @@ -0,0 +1,154 @@ +# Configuration for Linux on ARM. +# Included by combo/select.make + +# You can set TARGET_TOOLS_PREFIX to get gcc from somewhere else +ifeq ($(strip $($(combo_target)TOOLS_PREFIX)),) +$(combo_target)TOOLS_PREFIX := \ + prebuilt/$(HOST_PREBUILT_TAG)/toolchain/arm-eabi-4.2.1/bin/arm-eabi- +endif + +$(combo_target)CC := $($(combo_target)TOOLS_PREFIX)gcc$(HOST_EXECUTABLE_SUFFIX) +$(combo_target)CXX := $($(combo_target)TOOLS_PREFIX)g++$(HOST_EXECUTABLE_SUFFIX) +$(combo_target)AR := $($(combo_target)TOOLS_PREFIX)ar$(HOST_EXECUTABLE_SUFFIX) +$(combo_target)OBJCOPY := $($(combo_target)TOOLS_PREFIX)objcopy$(HOST_EXECUTABLE_SUFFIX) +$(combo_target)LD := $($(combo_target)TOOLS_PREFIX)ld$(HOST_EXECUTABLE_SUFFIX) + +$(combo_target)NO_UNDEFINED_LDFLAGS := -Wl,--no-undefined + +TARGET_arm_release_CFLAGS := -fomit-frame-pointer \ + -fstrict-aliasing \ + -funswitch-loops \ + -finline-limit=300 + +TARGET_thumb_release_CFLAGS := -mthumb \ + -Os \ + -fomit-frame-pointer \ + -fno-strict-aliasing \ + -finline-limit=64 + +# When building for debug, compile everything as arm. +TARGET_arm_debug_CFLAGS := $(TARGET_arm_release_CFLAGS) -fno-omit-frame-pointer -fno-strict-aliasing +TARGET_thumb_debug_CFLAGS := $(TARGET_thumb_release_CFLAGS) -marm -fno-omit-frame-pointer + +# NOTE: if you try to build a debug build with thumb, several +# of the libraries (libpv, libwebcore, libkjs) need to be built +# with -mlong-calls. When built at -O0, those libraries are +# too big for a thumb "BL <label>" to go from one end to the other. + +## As hopefully a temporary hack, +## use this to force a full ARM build (for easier debugging in gdb) +## (don't forget to do a clean build) +##TARGET_arm_release_CFLAGS := $(TARGET_arm_release_CFLAGS) -fno-omit-frame-pointer +##TARGET_thumb_release_CFLAGS := $(TARGET_thumb_release_CFLAGS) -marm -fno-omit-frame-pointer + +## on some hosts, the target cross-compiler is not available so do not run this command +ifneq ($(wildcard $($(combo_target)CC)),) +$(combo_target)LIBGCC := $(shell $($(combo_target)CC) -mthumb-interwork -print-libgcc-file-name) +endif + +$(combo_target)GLOBAL_CFLAGS += \ + -march=armv5te -mtune=xscale \ + -msoft-float -fpic \ + -mthumb-interwork \ + -ffunction-sections \ + -funwind-tables \ + -fstack-protector \ + -fno-short-enums \ + -D__ARM_ARCH_5__ -D__ARM_ARCH_5T__ \ + -D__ARM_ARCH_5E__ -D__ARM_ARCH_5TE__ \ + -include $(call select-android-config-h,linux-arm) + +$(combo_target)GLOBAL_CPPFLAGS += -fvisibility-inlines-hidden + +$(combo_target)RELEASE_CFLAGS := \ + -DSK_RELEASE -DNDEBUG \ + -O2 -g \ + -Wstrict-aliasing=2 \ + -finline-functions \ + -fno-inline-functions-called-once \ + -fgcse-after-reload \ + -frerun-cse-after-loop \ + -frename-registers + +libc_root := bionic/libc +libm_root := bionic/libm +libstdc++_root := bionic/libstdc++ +libthread_db_root := bionic/libthread_db + +# unless CUSTOM_KERNEL_HEADERS is defined, we're going to use +# symlinks located in out/ to point to the appropriate kernel +# headers. see 'config/kernel_headers.make' for more details +# +ifneq ($(CUSTOM_KERNEL_HEADERS),) + KERNEL_HEADERS_COMMON := $(CUSTOM_KERNEL_HEADERS) + KERNEL_HEADERS_ARCH := $(CUSTOM_KERNEL_HEADERS) +else + KERNEL_HEADERS_COMMON := $(libc_root)/kernel/common + KERNEL_HEADERS_ARCH := $(libc_root)/kernel/arch-$(TARGET_ARCH) +endif +KERNEL_HEADERS := $(KERNEL_HEADERS_COMMON) $(KERNEL_HEADERS_ARCH) + +$(combo_target)C_INCLUDES := \ + $(libc_root)/arch-arm/include \ + $(libc_root)/include \ + $(libstdc++_root)/include \ + $(KERNEL_HEADERS) \ + $(libm_root)/include \ + $(libm_root)/include/arch/arm \ + $(libthread_db_root)/include + +TARGET_CRTBEGIN_STATIC_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtbegin_static.o +TARGET_CRTBEGIN_DYNAMIC_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtbegin_dynamic.o +TARGET_CRTEND_O := $(TARGET_OUT_STATIC_LIBRARIES)/crtend_android.o + +TARGET_STRIP_MODULE:=true + +$(combo_target)DEFAULT_SYSTEM_SHARED_LIBRARIES := libc libstdc++ libm + +$(combo_target)CUSTOM_LD_COMMAND := true +define transform-o-to-shared-lib-inner +$(TARGET_CXX) \ + -nostdlib -Wl,-soname,$(notdir $@) -Wl,-T,$(BUILD_SYSTEM)/armelf.xsc \ + -Wl,--gc-sections \ + -Wl,-shared,-Bsymbolic \ + $(TARGET_GLOBAL_LD_DIRS) \ + $(PRIVATE_ALL_OBJECTS) \ + -Wl,--whole-archive \ + $(call normalize-host-libraries,$(PRIVATE_ALL_WHOLE_STATIC_LIBRARIES)) \ + -Wl,--no-whole-archive \ + $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ + $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ + -o $@ \ + $(PRIVATE_LDFLAGS) \ + $(TARGET_LIBGCC) +endef + +define transform-o-to-executable-inner +$(TARGET_CXX) -nostdlib -Bdynamic -Wl,-T,$(BUILD_SYSTEM)/armelf.x \ + -Wl,-dynamic-linker,/system/bin/linker \ + -Wl,--gc-sections \ + -Wl,-z,nocopyreloc \ + -o $@ \ + $(TARGET_GLOBAL_LD_DIRS) \ + -Wl,-rpath-link=$(TARGET_OUT_INTERMEDIATE_LIBRARIES) \ + $(call normalize-target-libraries,$(PRIVATE_ALL_SHARED_LIBRARIES)) \ + $(TARGET_CRTBEGIN_DYNAMIC_O) \ + $(PRIVATE_ALL_OBJECTS) \ + $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ + $(PRIVATE_LDFLAGS) \ + $(TARGET_LIBGCC) \ + $(TARGET_CRTEND_O) +endef + +define transform-o-to-static-executable-inner +$(TARGET_CXX) -nostdlib -Bstatic -Wl,-T,$(BUILD_SYSTEM)/armelf.x \ + -Wl,--gc-sections \ + -o $@ \ + $(TARGET_GLOBAL_LD_DIRS) \ + $(TARGET_CRTBEGIN_STATIC_O) \ + $(PRIVATE_LDFLAGS) \ + $(PRIVATE_ALL_OBJECTS) \ + $(call normalize-target-libraries,$(PRIVATE_ALL_STATIC_LIBRARIES)) \ + $(TARGET_LIBGCC) \ + $(TARGET_CRTEND_O) +endef |