diff options
Diffstat (limited to 'toolchain/toolchain-external/ext-tool.mk')
| -rw-r--r-- | toolchain/toolchain-external/ext-tool.mk | 210 |
1 files changed, 146 insertions, 64 deletions
diff --git a/toolchain/toolchain-external/ext-tool.mk b/toolchain/toolchain-external/ext-tool.mk index 53ad636ac..7a1791473 100644 --- a/toolchain/toolchain-external/ext-tool.mk +++ b/toolchain/toolchain-external/ext-tool.mk @@ -2,8 +2,9 @@ # # This file implements the support for external toolchains, i.e # toolchains that have not been produced by Buildroot itself and that -# are already available on the system on which Buildroot runs. So far, -# we have tested this with: +# Buildroot can download from the Web or that are already available on +# the system on which Buildroot runs. So far, we have tested this +# with: # # * Toolchains generated by Crosstool-NG # * Toolchains generated by Buildroot @@ -13,17 +14,21 @@ # # The basic principle is the following # -# 1. Perform some checks on the conformity between the toolchain -# configuration described in the Buildroot menuconfig system, and the -# real configuration of the external toolchain. This is for example -# important to make sure that the Buildroot configuration system -# knows whether the toolchain supports RPC, IPv6, locales, large -# files, etc. Unfortunately, these things cannot be detected -# automatically, since the value of these options (such as -# BR2_INET_RPC) are needed at configuration time because these -# options are used as dependencies for other options. And at -# configuration time, we are not able to retrieve the external -# toolchain configuration. +# 1. a. For toolchains downloaded from the Web, Buildroot already +# knows their configuration, so it just downloads them and extract +# them in $(TOOLCHAIN_EXTERNAL_DIR). +# +# 1. b. For pre-installed toolchains, perform some checks on the +# conformity between the toolchain configuration described in the +# Buildroot menuconfig system, and the real configuration of the +# external toolchain. This is for example important to make sure that +# the Buildroot configuration system knows whether the toolchain +# supports RPC, IPv6, locales, large files, etc. Unfortunately, these +# things cannot be detected automatically, since the value of these +# options (such as BR2_INET_RPC) are needed at configuration time +# because these options are used as dependencies for other +# options. And at configuration time, we are not able to retrieve the +# external toolchain configuration. # # 2. Copy the libraries needed at runtime to the target directory, # $(TARGET_DIR). Obviously, things such as the C library, the dynamic @@ -55,61 +60,138 @@ LIB_EXTERNAL_LIBS+=libthread_db.so endif # gdbserver endif # ! no threads -# SYSROOT_DIR selection. We first try the -print-sysroot option, -# available in gcc 4.4.x and in some Codesourcery toolchains. If this -# option is not available, we fallback to the value of --with-sysroot -# as visible in CROSS-gcc -v. We don't pass any option to gcc that -# could select a multilib variant as we want the "main" sysroot, which -# contains all variants of the C library in the case of multilib -# toolchains. +# Details about sysroot directory selection. +# +# To find the sysroot directory: +# +# * We first try the -print-sysroot option, available in gcc 4.4.x +# and in some Codesourcery toolchains. +# +# * If this option is not available, we fallback to the value of +# --with-sysroot as visible in CROSS-gcc -v. +# +# When doing those tests, we don't pass any option to gcc that could +# select a multilib variant (such as -march) as we want the "main" +# sysroot, which contains all variants of the C library in the case of +# multilib toolchains. We use the TARGET_CC_NO_SYSROOT variable, which +# is the path of the cross-compiler, without the +# --sysroot=$(STAGING_DIR), since what we want to find is the location +# of the original toolchain sysroot. This "main" sysroot directory is +# stored in SYSROOT_DIR. +# +# Then, multilib toolchains are a little bit more complicated, since +# they in fact have multiple sysroots, one for each variant supported +# by the toolchain. So we need to find the particular sysroot we're +# interested in. +# +# To do so, we ask the compiler where its sysroot is by passing all +# flags (including -march and al.), except the --sysroot flag since we +# want to the compiler to tell us where its original sysroot +# is. ARCH_SUBDIR will contain the subdirectory, in the main +# SYSROOT_DIR, that corresponds to the selected architecture +# variant. ARCH_SYSROOT_DIR will contain the full path to this +# location. +# +# One might wonder why we don't just bother with ARCH_SYSROOT_DIR. The +# fact is that in multilib toolchains, the header files are often only +# present in the main sysroot, and only the libraries are available in +# each variant-specific sysroot directory. + TARGET_CC_NO_SYSROOT=$(filter-out --sysroot=%,$(TARGET_CC_NOCCACHE)) -SYSROOT_DIR=$(shell $(TARGET_CC_NO_SYSROOT) -print-sysroot 2>/dev/null) -ifeq ($(SYSROOT_DIR),) -SYSROOT_DIR=$(shell readlink -f $$(LANG=C $(TARGET_CC_NO_SYSROOT) -print-file-name=libc.a) |sed -r -e 's:usr/lib/libc\.a::;') + +ifeq ($(BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD),y) +TOOLCHAIN_EXTERNAL_DEPENDENCIES = $(TOOLCHAIN_EXTERNAL_DIR)/.extracted +else +TOOLCHAIN_EXTERNAL_DEPENDENCIES = $(STAMP_DIR)/ext-toolchain-checked +endif + +ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM2009Q1),y) +TOOLCHAIN_EXTERNAL_SITE=http://www.codesourcery.com/sgpp/lite/arm/portal/package5383/public/arm-none-linux-gnueabi/ +TOOLCHAIN_EXTERNAL_SOURCE=arm-2009q3-67-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2 +else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM2010Q1),y) +TOOLCHAIN_EXTERNAL_SITE=http://www.codesourcery.com/sgpp/lite/arm/portal/package6488/public/arm-none-linux-gnueabi/ +TOOLCHAIN_EXTERNAL_SOURCE=arm-2010q1-202-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2 +else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM201009),y) +TOOLCHAIN_EXTERNAL_SITE=http://www.codesourcery.com/sgpp/lite/arm/portal/package7851/public/arm-none-linux-gnueabi/ +TOOLCHAIN_EXTERNAL_SOURCE=arm-2010.09-50-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2 +else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS44),y) +TOOLCHAIN_EXTERNAL_SITE=http://www.codesourcery.com/sgpp/lite/mips/portal/package7401/public/mips-linux-gnu/ +TOOLCHAIN_EXTERNAL_SOURCE=mips-4.4-303-mips-linux-gnu-i686-pc-linux-gnu.tar.bz2 +else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_POWERPC201009),y) +TOOLCHAIN_EXTERNAL_SITE=http://www.codesourcery.com/sgpp/lite/power/portal/package7703/public/powerpc-linux-gnu/ +TOOLCHAIN_EXTERNAL_SOURCE=freescale-2010.09-55-powerpc-linux-gnu-i686-pc-linux-gnu.tar.bz2 +else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH201009),y) +TOOLCHAIN_EXTERNAL_SITE=http://www.codesourcery.com/sgpp/lite/superh/portal/package7783/public/sh-linux-gnu/ +TOOLCHAIN_EXTERNAL_SOURCE=renesas-2010.09-45-sh-linux-gnu-i686-pc-linux-gnu.tar.bz2 +else +# A value must be set (even if unused), otherwise the +# $(DL_DIR)/$(TOOLCHAIN_EXTERNAL_SOURCE) rule would override the main +# $(DL_DIR) rule +TOOLCHAIN_EXTERNAL_SOURCE=none endif -# Now, find if the toolchain specifies a sub-directory for the -# specific architecture variant we're interested in. This is the case -# with multilib toolchain, when the selected architecture variant is -# not the default one. To do so, we ask the compiler by passing all -# flags, except the --sysroot flag since we want to the compiler to -# tell us where its original sysroot is. ARCH_SUBDIR will contain the -# subdirectory, in the main SYSROOT_DIR, that corresponds to the -# selected architecture variant. ARCH_SYSROOT_DIR will contain the -# full path to this location. -ARCH_SUBDIR=$(shell $(TARGET_CC_NO_SYSROOT) $(TARGET_CFLAGS) -print-multi-directory) -ARCH_SYSROOT_DIR=$(SYSROOT_DIR)/$(ARCH_SUBDIR) +# Download and extraction of a toolchain +$(DL_DIR)/$(TOOLCHAIN_EXTERNAL_SOURCE): + $(call DOWNLOAD,$(TOOLCHAIN_EXTERNAL_SITE),$(TOOLCHAIN_EXTERNAL_SOURCE)) + +$(TOOLCHAIN_EXTERNAL_DIR)/.extracted: $(DL_DIR)/$(TOOLCHAIN_EXTERNAL_SOURCE) + mkdir -p $(@D) + $(INFLATE$(suffix $(TOOLCHAIN_EXTERNAL_SOURCE))) $^ | $(TAR) $(TAR_STRIP_COMPONENTS)=1 -C $(@D) $(TAR_OPTIONS) - + touch $@ -$(STAMP_DIR)/ext-toolchain-installed: +# Checks for an already installed toolchain: check the toolchain +# location, check that it supports sysroot, and then verify that it +# matches the configuration provided in Buildroot: ABI, C++ support, +# type of C library and all C library features. +$(STAMP_DIR)/ext-toolchain-checked: @echo "Checking external toolchain settings" $(Q)$(call check_cross_compiler_exists) -ifeq ($(strip $(SYSROOT_DIR)),) - @echo "External toolchain doesn't support --sysroot. Cannot use." - exit 1 -endif -ifeq ($(BR2_arm),y) - $(Q)$(call check_arm_abi) -endif -ifeq ($(BR2_INSTALL_LIBSTDCPP),y) - $(Q)$(call check_cplusplus) -endif -ifeq ($(BR2_TOOLCHAIN_EXTERNAL_UCLIBC),y) - $(Q)$(call check_uclibc,$(SYSROOT_DIR)) -else - $(Q)$(call check_glibc,$(SYSROOT_DIR)) -endif - mkdir -p $(TARGET_DIR)/lib - @echo "Copy external toolchain libraries to target..." - $(Q)for libs in $(LIB_EXTERNAL_LIBS); do \ - $(call copy_toolchain_lib_root,$(ARCH_SYSROOT_DIR),$$libs,/lib,$(BR2_TOOLCHAIN_EXTERNAL_STRIP)); \ - done - $(Q)for libs in $(USR_LIB_EXTERNAL_LIBS); do \ - $(call copy_toolchain_lib_root,$(ARCH_SYSROOT_DIR),$$libs,/usr/lib,$(BR2_TOOLCHAIN_EXTERNAL_STRIP)); \ - done - @echo "Copy external toolchain sysroot to staging..." - $(Q)$(call copy_toolchain_sysroot,$(SYSROOT_DIR),$(ARCH_SYSROOT_DIR),$(ARCH_SUBDIR)) - # Create lib64 symbolic links if needed - $(Q)if [ -L $(ARCH_SYSROOT_DIR)/lib64 ] ; then \ - $(call create_lib64_symlinks) ; \ + $(Q)SYSROOT_DIR=`$(TARGET_CC_NO_SYSROOT) -print-sysroot 2>/dev/null` ; \ + if test -z "$${SYSROOT_DIR}" ; then \ + SYSROOT_DIR=`readlink -f $$(LANG=C $(TARGET_CC_NO_SYSROOT) -print-file-name=libc.a) |sed -r -e 's:usr/lib/libc\.a::;'` ; \ + fi ; \ + if test -z "$${SYSROOT_DIR}" ; then \ + @echo "External toolchain doesn't support --sysroot. Cannot use." ; \ + exit 1 ; \ + fi ; \ + if test x$(BR2_arm) == x"y" ; then \ + $(call check_arm_abi) ; \ + fi ; \ + if test x$(BR2_INSTALL_LIBSTDCPP) == x"y" ; then \ + $(call check_cplusplus) ; \ + fi ; \ + if test x$(BR2_TOOLCHAIN_EXTERNAL_UCLIBC) == x"y" ; then \ + $(call check_uclibc,$${SYSROOT_DIR}) ; \ + else \ + $(call check_glibc,$${SYSROOT_DIR}) ; \ fi - @touch $@ + +# Integration of the toolchain into Buildroot: find the main sysroot +# and the variant-specific sysroot, then copy the needed libraries to +# the $(TARGET_DIR) and copy the whole sysroot (libraries and headers) +# to $(STAGING_DIR). +$(STAMP_DIR)/ext-toolchain-installed: $(TOOLCHAIN_EXTERNAL_DEPENDENCIES) + $(Q)SYSROOT_DIR=`$(TARGET_CC_NO_SYSROOT) -print-sysroot 2>/dev/null` ; \ + if test -z "$${SYSROOT_DIR}" ; then \ + SYSROOT_DIR=`readlink -f $$(LANG=C $(TARGET_CC_NO_SYSROOT) -print-file-name=libc.a) |sed -r -e 's:usr/lib/libc\.a::;'` ; \ + fi ; \ + if test -z "$${SYSROOT_DIR}" ; then \ + @echo "External toolchain doesn't support --sysroot. Cannot use." ; \ + exit 1 ; \ + fi ; \ + ARCH_SUBDIR=`$(TARGET_CC_NO_SYSROOT) $(TARGET_CFLAGS) -print-multi-directory` ; \ + ARCH_SYSROOT_DIR=$${SYSROOT_DIR}/$${ARCH_SUBDIR} ; \ + mkdir -p $(TARGET_DIR)/lib ; \ + echo "Copy external toolchain libraries to target..." ; \ + for libs in $(LIB_EXTERNAL_LIBS); do \ + $(call copy_toolchain_lib_root,$${ARCH_SYSROOT_DIR},$$libs,/lib,$(BR2_TOOLCHAIN_EXTERNAL_STRIP)); \ + done ; \ + for libs in $(USR_LIB_EXTERNAL_LIBS); do \ + $(call copy_toolchain_lib_root,$${ARCH_SYSROOT_DIR},$$libs,/usr/lib,$(BR2_TOOLCHAIN_EXTERNAL_STRIP)); \ + done ; \ + echo "Copy external toolchain sysroot to staging..." ; \ + $(call copy_toolchain_sysroot,$${SYSROOT_DIR},$${ARCH_SYSROOT_DIR},$${ARCH_SUBDIR}) ; \ + if [ -L $${ARCH_SYSROOT_DIR}/lib64 ] ; then \ + $(call create_lib64_symlinks) ; \ + fi ; \ + touch $@ |