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authorGravatar Manuel Novoa III <mjn3@codepoet.org>2004-01-14 10:03:44 +0000
committerGravatar Manuel Novoa III <mjn3@codepoet.org>2004-01-14 10:03:44 +0000
commit9168e8380931531eb69f62a543b9f7413115eaaf (patch)
treec0a96dd6b369a6061a6cdfd94ff9bbcebf90d173 /Makefile
parent073534b925bd17ae9f87b889a676e2bcea246b5d (diff)
downloadbuildroot-9168e8380931531eb69f62a543b9f7413115eaaf.tar.gz
buildroot-9168e8380931531eb69f62a543b9f7413115eaaf.tar.bz2
Enable building <arch>-linux-uclibc toolchains. Note that, due to config
issues for applications, we also create staging_dir/bin/<arch>-linux-* symlinks which allows us to configure most apps with target=<arch>-linux. gcc 3.3.2 libstdc++ now correctly identifies uclibc locale support. There are still some issues (mainly related to wide char time strings and wcsftime) to be addressed, but those are on hold until the uClibc locale internals are reworked once again. With the new stuff, we can also build gcc 2.95 and STLport again, although the native gcc build for the target is failing. Archs supported (some archs not yet tested): 2.95 - i386, arm, mips*, powerpc. 3.3.2 - Hopefull all for which uClibc has shared lib support.
Diffstat (limited to 'Makefile')
-rw-r--r--Makefile61
1 files changed, 48 insertions, 13 deletions
diff --git a/Makefile b/Makefile
index eeb75c8d40..ed84e7059c 100644
--- a/Makefile
+++ b/Makefile
@@ -46,17 +46,26 @@ ARCH:=i386
#ARCH:=sparc
#ARCH:=whatever
+# Enable this if you want to use an <arch>-linux-uclibc-* toolchain.
+# Note that, to avoid configure problems with apps that don't support
+# this tupple, we also put <arch>-linux-* symlinks in staging_dir/bin.
+# WARNING -- This does not yet support soft-float builds.
+USE_LINUX_UCLIBC:=true
+#USE_LINUX_UCLIBC:=false
+
# If you are building a native gcc toolchain, do you want to
# build the old gcc-2.95 based toolchain, or would you prefer
# a nice and shiny new gcc-3.3.2 toolchain?
-# WARNING -- 2.95 currently does not build.
+# WARNING -- 2.95 currently does not build unless USE_LINUX_UCLIBC:=true.
+# WARNING -- 2.95 currently only builds for i386, arm, mips*, and powerpc.
+# WARNING -- 2.95 does not currently build natively for the target.
+#GCC_2_95_TOOLCHAIN:=true
GCC_2_95_TOOLCHAIN:=false
-# WARNING -- 2.95 currently does not build.
# Enable this to use the uClibc daily snapshot instead of a released
# version. Daily snapshots may contain new features and bugfixes. Or
# they may not even compile at all, depending on what Erik is doing...
-USE_UCLIBC_SNAPSHOT:=false
+USE_UCLIBC_SNAPSHOT:=true
# Enable this to use the busybox daily snapshot instead of a released
# version. Daily snapshots may contain new features and bugfixes. Or
@@ -70,12 +79,15 @@ BUILD_WITH_LARGEFILE:=true
WGET:=wget --passive-ftp
# Optimize toolchain for which type of CPU?
+ifeq ($(USE_LINUX_UCLIBC),true)
+OPTIMIZE_FOR_CPU=$(ARCH)
+#OPTIMIZE_FOR_CPU=i686
+#OPTIMIZE_FOR_CPU=whatever
+else
# WARNING!!! CURRENTLY BROKEN!!! LEAVE IT AS $(ARCH)!!!
OPTIMIZE_FOR_CPU=$(ARCH)
# WARNING!!! CURRENTLY BROKEN!!! LEAVE IT AS $(ARCH)!!!
-#OPTIMIZE_FOR_CPU=i486
-#OPTIMIZE_FOR_CPU=strongarm
-#OPTIMIZE_FOR_CPU=whatever
+endif
# Soft floating point options.
# Notes:
@@ -200,6 +212,11 @@ TARGETS+=ext2root
#
#############################################################
+# The new stuff doesn't support soft float yet.
+ifeq ($(USE_LINUX_UCLIBC),true)
+SOFT_FLOAT:=false
+endif
+
ifeq ($(SOFT_FLOAT),true)
SOFT_FLOAT_CONFIG_OPTION:=--without-float
TARGET_SOFT_FLOAT:=-msoft-float
@@ -210,9 +227,13 @@ TARGET_SOFT_FLOAT:=
ARCH_FPU_SUFFIX:=
endif
+# The new stuff auto-detects approrpriate locale support.
+# So only set this for the old 'hacked' toolchain.
+ifneq ($(USE_LINUX_UCLIBC),true)
ifeq ($(ENABLE_LOCALE),true)
EXTRA_GCC_CONFIG_OPTIONS += --enable-clocale=gnu
endif
+endif
# WARNING -- uClibc currently disables large file support on cris.
ifeq ("$(strip $(ARCH))","cris")
@@ -234,15 +255,24 @@ TARGET_DIR:=$(BUILD_DIR)/root
STAGING_DIR=$(BUILD_DIR)/staging_dir
TOOL_BUILD_DIR=$(BASE_DIR)/toolchain_build_$(ARCH)$(ARCH_FPU_SUFFIX)
TARGET_PATH=$(STAGING_DIR)/bin:/bin:/sbin:/usr/bin:/usr/sbin
-#TARGET_CROSS=$(STAGING_DIR)/bin/$(ARCH)-uclibc-
-TARGET_CROSS=$(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)$(ARCH_FPU_SUFFIX)
+
+ifeq ($(USE_LINUX_UCLIBC),true)
+REAL_GNU_TARGET_NAME=$(OPTIMIZE_FOR_CPU)-linux-uclibc
+GNU_TARGET_NAME=$(OPTIMIZE_FOR_CPU)-linux
+KERNEL_CROSS=$(STAGING_DIR)/bin/$(OPTIMIZE_FOR_CPU)-linux-uclibc-
+TARGET_CROSS=$(STAGING_DIR)/bin/$(OPTIMIZE_FOR_CPU)-linux-uclibc-
+else
+REAL_GNU_TARGET_NAME=$(OPTIMIZE_FOR_CPU)-linux
GNU_TARGET_NAME=$(OPTIMIZE_FOR_CPU)-linux
-#KERNEL_CROSS=$(STAGING_DIR)/bin/$(ARCH)-uclibc-
-KERNEL_CROSS=$(STAGING_DIR)/bin/$(ARCH)-linux-
+KERNEL_CROSS=$(STAGING_DIR)/bin/$(OPTIMIZE_FOR_CPU)-linux-
+TARGET_CROSS=$(STAGING_DIR)/bin/$(OPTIMIZE_FOR_CPU)-linux-
+endif
+
+TARGET_CC=$(TARGET_CROSS)gcc$(TARGET_SOFT_FLOAT)
+STRIP=$(TARGET_CROSS)strip --remove-section=.comment --remove-section=.note
+
+
HOST_ARCH:=$(shell $(HOSTCC) -dumpmachine | sed -e s'/-.*//' \
-e 's/sparc.*/sparc/' \
-e 's/arm.*/arm/g' \
@@ -301,7 +331,12 @@ $(STAGING_DIR):
rm -rf $(STAGING_DIR)
mkdir -p $(STAGING_DIR)/lib
mkdir -p $(STAGING_DIR)/usr
+ifneq ($(GCC_2_95_TOOLCHAIN),true)
mkdir -p $(STAGING_DIR)/include
+else
+ mkdir -p $(STAGING_DIR)/$(REAL_GNU_TARGET_NAME)/include
+ (cd $(STAGING_DIR); ln -fs $(REAL_GNU_TARGET_NAME)/include)
+endif
ln -fs ../lib $(STAGING_DIR)/usr/lib
$(TARGET_DIR):