diff options
| author | Simon Glass <sjg@chromium.org> | 2011-11-11 13:20:28 -0800 |
|---|---|---|
| committer | Simon Glass <sjg@chromium.org> | 2011-11-14 15:52:53 -0800 |
| commit | 77ce2e864e09d82111c92c5177ede3bb5163aeb5 (patch) | |
| tree | fd0fb47aca721632a7c433f7cdcfb385806a0984 | |
| parent | c25904536f2d8e3fe37860dff0ecc437323b760e (diff) | |
| download | vboot-77ce2e864e09d82111c92c5177ede3bb5163aeb5.tar.gz | |
Break out common compile flags
Many of the compile flags are common between archs, so this makes that
more obvious.
BUG=chromium-os:16808
TEST=emerge vboot_reference-firmware for tegra2-seaboard, x86-mario
Change-Id: I62bfbaadac392e3dd03d6997f24055fafac162af
Reviewed-on: https://gerrit.chromium.org/gerrit/11549
Reviewed-by: Randall Spangler <rspangler@chromium.org>
Tested-by: Simon Glass <sjg@chromium.org>
| -rw-r--r-- | Makefile | 50 |
1 files changed, 28 insertions, 22 deletions
@@ -5,39 +5,43 @@ export FIRMWARE_ARCH export MOCK_TPM -export CC ?= gcc -export CXX ?= g++ -export CFLAGS = -Wall -Werror - -ifeq (${DEBUG},) -CFLAGS += -O3 -else -CFLAGS += -O0 -g -endif - +# +# Provide default CC and CFLAGS for firmware builds; if you have any -D flags, +# please add them after this point (e.g., -DVBOOT_DEBUG). # # TODO(crosbug.com/16808) We hard-code u-boot's compiler flags here just # temporarily. As we are still investigating which flags are necessary for # maintaining a compatible ABI, etc. between u-boot and vboot_reference. # -# Override CC and CFLAGS for firmware builds; if you have any -D flags, please -# add them after this point (e.g., -DVBOOT_DEBUG). +# As a first step, this makes the setting of CC and CFLAGS here optional, to +# permit a calling script or Makefile to set these. # +# Flag ordering: arch, then -f, then -m, then -W +DEBUG_FLAGS := $(if ${DEBUG},-g -O0,-Os) +COMMON_FLAGS := -nostdinc -pipe \ + -ffreestanding -fno-builtin -fno-stack-protector \ + -Werror -Wall -Wstrict-prototypes $(DEBUG_FLAGS) + ifeq ($(FIRMWARE_ARCH), arm) -CC = armv7a-cros-linux-gnueabi-gcc -CFLAGS = -g -Os -fno-common -ffixed-r8 -msoft-float -fno-builtin \ - -ffreestanding -nostdinc \ - -pipe -marm -mabi=aapcs-linux -mno-thumb-interwork -march=armv5 \ - -Werror -Wall -Wstrict-prototypes -fno-stack-protector +CC ?= armv7a-cros-linux-gnueabi-gcc +CFLAGS ?= -march=armv5 \ + -fno-common -ffixed-r8 \ + -msoft-float -marm -mabi=aapcs-linux -mno-thumb-interwork \ + $(COMMON_FLAGS) endif ifeq ($(FIRMWARE_ARCH), i386) -CC = i686-pc-linux-gnu-gcc -CFLAGS = -g -Os -ffunction-sections -fvisibility=hidden -fno-builtin \ - -ffreestanding -nostdinc -pipe -Wstrict-prototypes -mregparm=3 \ - -fomit-frame-pointer -fno-stack-protector \ - -mpreferred-stack-boundary=2 -fno-dwarf2-cfi-asm -Werror -Wall +CC ?= i686-pc-linux-gnu-gcc +# Drop -march=i386 to permit use of SSE instructions +CFLAGS ?= \ + -ffunction-sections -fvisibility=hidden -fno-strict-aliasing \ + -fomit-frame-pointer -fno-toplevel-reorder -fno-dwarf2-cfi-asm \ + -mpreferred-stack-boundary=2 -mregparm=3 \ + $(COMMON_FLAGS) endif +CC ?= gcc +CXX ?= g++ + # Fix compiling directly on host (outside of emake) ifeq ($(ARCH),) export ARCH=amd64 @@ -55,6 +59,8 @@ ifeq (${DISABLE_NDEBUG},) CFLAGS += -DNDEBUG endif +export CC CXX CFLAGS + export TOP = $(shell pwd) export FWDIR=$(TOP)/firmware export HOSTDIR=$(TOP)/host |