Enable building soft float buildroot for gcc 3.3. Currently works for
i386 (limited to 64 bit long double... same as double), arm (libfloat),
mips, and mipsel.
Enable cross compiling a native gcc 3.3 toolchain to run on the target.
Misc rootfs cleanups... strip some things that weren't, eliminate duplicate
libs, move openssl shared libs out of /lib, reduce size of libssl.so
by dynamicly linking with libcrypto.so, fix dropbear compile on mips.
diff --git a/Makefile b/Makefile
index 7e8bc31..aa209ea 100644
--- a/Makefile
+++ b/Makefile
@@ -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=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) $(TARGET_SOFT_FLOAT)
+
# Any additional gcc options you may want to include....
EXTRA_GCC_CONFIG_OPTIONS=
-#EXTRA_GCC_CONFIG_OPTIONS=--without-float
# Enable the following if you want locale/gettext/i18n support.
#ENABLE_LOCALE:=true
@@ -172,23 +192,32 @@
# what you are doing.
#
#############################################################
+ifeq ("$(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 $(HOSTCC) -dumpmachine | sed -e s'/-.*//' \
-e 's/sparc.*/sparc/' \
-e 's/arm.*/arm/g' \
@@ -207,12 +236,10 @@
AS=$(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
