diff options
Diffstat (limited to 'Makefile')
| -rw-r--r-- | Makefile | 51 |
1 files changed, 39 insertions, 12 deletions
@@ -31,6 +31,8 @@ # What sortof target system shall we compile this for? ARCH:=i386 #ARCH:=arm +#ARCH:=mipsel +#ARCH:=mips #ARCH:=powerpc #ARCH:=whatever @@ -64,9 +66,27 @@ OPTIMIZE_FOR_CPU=$(ARCH) #OPTIMIZE_FOR_CPU=strongarm #OPTIMIZE_FOR_CPU=whatever +# Soft floating point options. +# Notes: +# Currently builds with gcc 3.3 for i386, arm, mips, mipsel. +# Only tested with multilib enabled. +# For i386, long double is the same as double (64 bits). While this +# is unusual for x86, it seemed the best approach considering the +# limitations in the gcc floating point emulation library. +# For arm, soft float uses the usual libfloat routines. +# The uClibc built will support _only_ applications compiled with the +# -msoft-float flag. To avoid CFLAGS problems, you may want to use +# scripts similar to those in the build*/staging_dir/bin directory. +# Uncomment the next 2 lines to build a soft-float toolchain and rootfs. +# SOFT_FLOAT_CONFIG_OPTION=--without-float +# TARGET_SOFT_FLOAT=-msoft-float + +TARGET_OPTIMIZATION=-Os +TARGET_DEBUGGING= #-g +TARGET_CFLAGS=$(TARGET_OPTIMIZATION) $(TARGET_DEBUGGING) $(TARGET_SOFT_FLOAT) + # Any additional gcc options you may want to include.... EXTRA_GCC_CONFIG_OPTIONS= -#EXTRA_GCC_CONFIG_OPTIONS=--without-float # Enable the following if you want locale/gettext/i18n support. #ENABLE_LOCALE:=true @@ -172,23 +192,32 @@ TARGETS+=ext2root # what you are doing. # ############################################################# +ifeq ("$(strip $(TARGET_SOFT_FLOAT))","") +ARCH_FPU_SUFFIX:= +else +ARCH_FPU_SUFFIX:=_nofpu +endif + + HOSTCC:=gcc BASE_DIR:=${shell pwd} SOURCE_DIR:=$(BASE_DIR)/sources DL_DIR:=$(SOURCE_DIR)/dl PATCH_DIR=$(SOURCE_DIR)/patches -BUILD_DIR:=$(BASE_DIR)/build_$(ARCH) +BUILD_DIR:=$(BASE_DIR)/build_$(ARCH)$(ARCH_FPU_SUFFIX) TARGET_DIR:=$(BUILD_DIR)/root STAGING_DIR=$(BUILD_DIR)/staging_dir -TOOL_BUILD_DIR=$(BASE_DIR)/toolchain_build_$(ARCH) +TOOL_BUILD_DIR=$(BASE_DIR)/toolchain_build_$(ARCH)$(ARCH_FPU_SUFFIX) TARGET_PATH=$(STAGING_DIR)/bin:/bin:/sbin:/usr/bin:/usr/sbin -TARGET_CROSS=$(STAGING_DIR)/bin/$(ARCH)-uclibc- -TARGET_CC=$(TARGET_CROSS)gcc +#TARGET_CROSS=$(STAGING_DIR)/bin/$(ARCH)-uclibc- +TARGET_CROSS=$(STAGING_DIR)/bin/$(ARCH)-linux- +TARGET_CC=$(TARGET_CROSS)gcc$(TARGET_SOFT_FLOAT) STRIP=$(TARGET_CROSS)strip --remove-section=.comment --remove-section=.note #STRIP:=/bin/true -IMAGE:=$(BASE_DIR)/root_fs_$(ARCH) +IMAGE:=$(BASE_DIR)/root_fs_$(ARCH)$(ARCH_FPU_SUFFIX) GNU_TARGET_NAME=$(OPTIMIZE_FOR_CPU)-linux -KERNEL_CROSS=$(STAGING_DIR)/bin/$(ARCH)-uclibc- +#KERNEL_CROSS=$(STAGING_DIR)/bin/$(ARCH)-uclibc- +KERNEL_CROSS=$(STAGING_DIR)/bin/$(ARCH)-linux- HOST_ARCH:=$(shell $(HOSTCC) -dumpmachine | sed -e s'/-.*//' \ -e 's/sparc.*/sparc/' \ -e 's/arm.*/arm/g' \ @@ -207,12 +236,10 @@ TARGET_CONFIGURE_OPTS=PATH=$(TARGET_PATH) \ AS=$(TARGET_CROSS)as \ LD=$(TARGET_CROSS)ld \ NM=$(TARGET_CROSS)nm \ - CC=$(TARGET_CROSS)gcc \ - GCC=$(TARGET_CROSS)gcc \ - CXX=$(TARGET_CROSS)g++ \ + CC=$(TARGET_CROSS)gcc$(TARGET_SOFT_FLOAT) \ + GCC=$(TARGET_CROSS)gcc$(TARGET_SOFT_FLOAT) \ + CXX=$(TARGET_CROSS)g++$(TARGET_SOFT_FLOAT) \ RANLIB=$(TARGET_CROSS)ranlib -#Directory in which to build the toolchain -TOOL_BUILD_DIR=$(BASE_DIR)/toolchain_build_$(ARCH) ifeq ($(ENABLE_LOCALE),true) DISABLE_NLS:= else |