# # This file implements the support for external toolchains, i.e # toolchains that have not been produced by Buildroot itself and that # 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 # * ARM, MIPS and PowerPC toolchains made available by # Codesourcery. For the MIPS toolchain, the -muclibc variant isn't # supported yet, only the default glibc-based variant is. # # The basic principle is the following # # 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 # loader and a few other utility libraries are needed if dynamic # applications are to be executed on the target system. # # 3. Copy the libraries and headers to the staging directory. This # will allow all further calls to gcc to be made using --sysroot # $(STAGING_DIR), which greatly simplifies the compilation of the # packages when using external toolchains. So in the end, only the # cross-compiler binaries remains external, all libraries and headers # are imported into the Buildroot tree. # # 4. Build a toolchain wrapper which executes the external toolchain # with a number of arguments (sysroot/march/mtune/..) hardcoded, # so we're sure the correct configuration is always used and the # toolchain behaves similar to an internal toolchain. # This toolchain wrapper and symlinks are installed into # $(HOST_DIR)/usr/bin like for the internal toolchains, and the rest # of Buildroot is handled identical for the 2 toolchain types. LIB_EXTERNAL_LIBS=ld*.so libc.so libcrypt.so libdl.so libgcc_s.so libm.so libnsl.so libresolv.so librt.so libutil.so LIB_EXTERNAL_LIBS+=$(call qstrip,$(BR2_TOOLCHAIN_EXTRA_EXTERNAL_LIBS)) ifeq ($(BR2_TOOLCHAIN_EXTERNAL_GLIBC),y) LIB_EXTERNAL_LIBS+=libnss_files.so libnss_dns.so endif ifeq ($(BR2_INSTALL_LIBSTDCPP),y) USR_LIB_EXTERNAL_LIBS+=libstdc++.so endif ifeq ($(BR2_TOOLCHAIN_HAS_THREADS),y) LIB_EXTERNAL_LIBS+=libpthread.so ifeq ($(BR2_PACKAGE_GDB_SERVER),y) LIB_EXTERNAL_LIBS+=libthread_db.so endif # gdbserver endif # ! no threads # Details about sysroot directory selection. # # To find the sysroot directory: # # * We first try the -print-sysroot option, available in gcc 4.4.x # and in some Codesourcery toolchains. # # * If this option is not available, we fallback to the value of # --with-sysroot as visible in CROSS-gcc -v. # # When doing those tests, we don't pass any option to gcc that could # select a multilib variant (such as -march) as we want the "main" # sysroot, which contains all variants of the C library in the case of # multilib toolchains. We use the TARGET_CC_NO_SYSROOT variable, which # is the path of the cross-compiler, without the # --sysroot=$(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. TOOLCHAIN_EXTERNAL_PREFIX=$(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_PREFIX)) ifeq ($(BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD),y) TOOLCHAIN_EXTERNAL_DIR=$(HOST_DIR)/opt/ext-toolchain else TOOLCHAIN_EXTERNAL_DIR=$(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_PATH)) endif ifeq ($(TOOLCHAIN_EXTERNAL_DIR),) # if no path set, figure it out from path TOOLCHAIN_EXTERNAL_BIN:=$(shell dirname $(shell which $(TOOLCHAIN_EXTERNAL_PREFIX)-gcc)) else TOOLCHAIN_EXTERNAL_BIN:=$(TOOLCHAIN_EXTERNAL_DIR)/bin endif TOOLCHAIN_EXTERNAL_CROSS=$(TOOLCHAIN_EXTERNAL_BIN)/$(TOOLCHAIN_EXTERNAL_PREFIX)- TOOLCHAIN_EXTERNAL_CC=$(TOOLCHAIN_EXTERNAL_CROSS)gcc TOOLCHAIN_EXTERNAL_CXX=$(TOOLCHAIN_EXTERNAL_CROSS)g++ TOOLCHAIN_EXTERNAL_WRAPPER_ARGS = \ -DBR_CROSS_PATH='"$(TOOLCHAIN_EXTERNAL_BIN)/"' \ -DBR_SYSROOT='"$(STAGING_DIR)"' CC_TARGET_TUNE_:=$(call qstrip,$(BR2_GCC_TARGET_TUNE)) CC_TARGET_CPU_:=$(call qstrip,$(BR2_GCC_TARGET_CPU)) CC_TARGET_ARCH_:=$(call qstrip,$(BR2_GCC_TARGET_ARCH)) CC_TARGET_ABI_:=$(call qstrip,$(BR2_GCC_TARGET_ABI)) # march/mtune/floating point mode needs to be passed to the external toolchain # to select the right multilib variant ifeq ($(BR2_x86_64),y) TOOLCHAIN_EXTERNAL_CFLAGS += -m64 TOOLCHAIN_EXTERNAL_WRAPPER_ARGS += -DBR_64 endif ifneq ($(CC_TARGET_TUNE_),) TOOLCHAIN_EXTERNAL_CFLAGS += -mtune=$(CC_TARGET_TUNE_) TOOLCHAIN_EXTERNAL_WRAPPER_ARGS += -DBR_TUNE='"$(CC_TARGET_TUNE_)"' endif ifneq ($(CC_TARGET_ARCH_),) TOOLCHAIN_EXTERNAL_CFLAGS += -march=$(CC_TARGET_ARCH_) TOOLCHAIN_EXTERNAL_WRAPPER_ARGS += -DBR_ARCH='"$(CC_TARGET_ARCH_)"' endif ifneq ($(CC_TARGET_CPU_),) TOOLCHAIN_EXTERNAL_CFLAGS += -mcpu=$(CC_TARGET_CPU_) TOOLCHAIN_EXTERNAL_WRAPPER_ARGS += -DBR_CPU='"$(CC_TARGET_CPU_)"' endif ifneq ($(CC_TARGET_ABI_),) TOOLCHAIN_EXTERNAL_CFLAGS += -mabi=$(CC_TARGET_ABI_) TOOLCHAIN_EXTERNAL_WRAPPER_ARGS += -DBR_ABI='"$(CC_TARGET_ABI_)"' endif ifneq ($(BR2_TARGET_OPTIMIZATION),) TOOLCHAIN_EXTERNAL_CFLAGS += $(call qstrip,$(BR2_TARGET_OPTIMIZATION)) # We create a list like '"-mfoo", "-mbar", "-mbarfoo"' so that each # flag is a separate argument when used in execv() by the external # toolchain wrapper. TOOLCHAIN_EXTERNAL_WRAPPER_ARGS += -DBR_ADDITIONAL_CFLAGS='$(foreach f,$(call qstrip,$(BR2_TARGET_OPTIMIZATION)),"$(f)",)' endif ifeq ($(BR2_SOFT_FLOAT),y) TOOLCHAIN_EXTERNAL_CFLAGS += -msoft-float TOOLCHAIN_EXTERNAL_WRAPPER_ARGS += -DBR_SOFTFLOAT=1 endif ifeq ($(BR2_VFP_FLOAT),y) TOOLCHAIN_EXTERNAL_CFLAGS += -mfpu=vfp TOOLCHAIN_EXTERNAL_WRAPPER_ARGS += -DBR_VFPFLOAT=1 endif ifeq ($(BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD),y) TOOLCHAIN_EXTERNAL_DEPENDENCIES = $(TOOLCHAIN_EXTERNAL_DIR)/.extracted endif ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM2009Q3),y) TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.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 ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM2010Q1),y) TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.com/sgpp/lite/arm/portal/package6488/public/arm-none-linux-gnueabi/ TOOLCHAIN_EXTERNAL_SOURCE=arm-2010q1-202-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM201009),y) TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.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 ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM201103),y) TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.com/sgpp/lite/arm/portal/package8739/public/arm-none-linux-gnueabi/ TOOLCHAIN_EXTERNAL_SOURCE=arm-2011.03-41-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_ARM201109),y) TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.com/public/gnu_toolchain/arm-none-linux-gnueabi/ TOOLCHAIN_EXTERNAL_SOURCE=arm-2011.09-70-arm-none-linux-gnueabi-i686-pc-linux-gnu.tar.bz2 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_LINARO_2012_01),y) TOOLCHAIN_EXTERNAL_SITE=http://launchpad.net/linaro-toolchain-binaries/trunk/2012.01/+download/ TOOLCHAIN_EXTERNAL_SOURCE=gcc-linaro-arm-linux-gnueabi-2012.01-20120125_linux.tar.bz2 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_LINARO_2012_02),y) TOOLCHAIN_EXTERNAL_SITE=http://launchpad.net/linaro-toolchain-binaries/trunk/2012.02/+download/ TOOLCHAIN_EXTERNAL_SOURCE=gcc-linaro-arm-linux-gnueabi-2012.02-20120222_linux.tar.bz2 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_LINARO_2012_03),y) TOOLCHAIN_EXTERNAL_SITE=http://launchpad.net/linaro-toolchain-binaries/trunk/2012.03/+download/ TOOLCHAIN_EXTERNAL_SOURCE=gcc-linaro-arm-linux-gnueabi-2012.03-20120326_linux.tar.bz2 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_LINARO_2012_04),y) TOOLCHAIN_EXTERNAL_SITE=https://launchpad.net/linaro-toolchain-binaries/trunk/2012.04/+download/ TOOLCHAIN_EXTERNAL_SOURCE=gcc-linaro-arm-linux-gnueabi-2012.04-20120426_linux.tar.bz2 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS44),y) TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.com/sgpp/lite/mips/portal/package7401/public/mips-linux-gnu/ TOOLCHAIN_EXTERNAL_SOURCE=mips-4.4-303-mips-linux-gnu-i686-pc-linux-gnu.tar.bz2 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_MIPS201103),y) TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.com/sgpp/lite/mips/portal/package9469/public/mips-linux-gnu/ TOOLCHAIN_EXTERNAL_SOURCE=mips-2011.03-110-mips-linux-gnu-i686-pc-linux-gnu.tar.bz2 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_POWERPC201009),y) TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.com/sgpp/lite/power/portal/package7703/public/powerpc-linux-gnu/ TOOLCHAIN_EXTERNAL_SOURCE=freescale-2010.09-55-powerpc-linux-gnu-i686-pc-linux-gnu.tar.bz2 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_POWERPC201103),y) TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.com/public/gnu_toolchain/powerpc-linux-gnu/ TOOLCHAIN_EXTERNAL_SOURCE=freescale-2011.03-38-powerpc-linux-gnu-i686-pc-linux-gnu.tar.bz2 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH201009),y) TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.com/sgpp/lite/superh/portal/package7783/public/sh-linux-gnu/ TOOLCHAIN_EXTERNAL_SOURCE=renesas-2010.09-45-sh-linux-gnu-i686-pc-linux-gnu.tar.bz2 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH201103),y) TOOLCHAIN_EXTERNAL_SITE=https://sourcery.mentor.com/sgpp/lite/superh/portal/package8759/public/sh-linux-gnu/ TOOLCHAIN_EXTERNAL_SOURCE=renesas-2011.03-37-sh-linux-gnu-i686-pc-linux-gnu.tar.bz2 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH2A_201009),y) TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.com/sgpp/lite/superh/portal/package7859/public/sh-uclinux/ TOOLCHAIN_EXTERNAL_SOURCE=renesas-2010.09-60-sh-uclinux-i686-pc-linux-gnu.tar.bz2 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_SH2A_201103),y) TOOLCHAIN_EXTERNAL_SITE=http://sourcery.mentor.com/sgpp/lite/superh/portal/package8749/public/sh-uclinux/ TOOLCHAIN_EXTERNAL_SOURCE=renesas-2011.03-36-sh-uclinux-i686-pc-linux-gnu.tar.bz2 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_X86_201009),y) TOOLCHAIN_EXTERNAL_SITE=https://sourcery.mentor.com/sgpp/lite/ia32/portal/package7682/public/i686-pc-linux-gnu/ TOOLCHAIN_EXTERNAL_SOURCE=ia32-2010.09-44-i686-pc-linux-gnu-i386-linux.tar.bz2 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_CODESOURCERY_X86_201109),y) TOOLCHAIN_EXTERNAL_SITE=https://sourcery.mentor.com/public/gnu_toolchain/i686-pc-linux-gnu/ TOOLCHAIN_EXTERNAL_SOURCE=ia32-2011.09-24-i686-pc-linux-gnu-i386-linux.tar.bz2 else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2010RC1),y) TOOLCHAIN_EXTERNAL_SITE_1 = http://blackfin.uclinux.org/gf/download/frsrelease/501/8378/ TOOLCHAIN_EXTERNAL_SOURCE_1 = blackfin-toolchain-2010R1-RC4.i386.tar.bz2 TOOLCHAIN_EXTERNAL_SITE_2 = http://blackfin.uclinux.org/gf/download/frsrelease/501/8386/ TOOLCHAIN_EXTERNAL_SOURCE_2 = blackfin-toolchain-uclibc-full-2010R1-RC4.i386.tar.bz2 TOOLCHAIN_EXTERNAL_SOURCE = $(TOOLCHAIN_EXTERNAL_SOURCE_1) $(TOOLCHAIN_EXTERNAL_SOURCE_2) else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2011R1),y) TOOLCHAIN_EXTERNAL_SITE_1 = http://blackfin.uclinux.org/gf/download/frsrelease/531/9509/ TOOLCHAIN_EXTERNAL_SOURCE_1 = blackfin-toolchain-2011R1-RC4.i386.tar.bz2 TOOLCHAIN_EXTERNAL_SITE_2 = http://blackfin.uclinux.org/gf/download/frsrelease/531/9517/ TOOLCHAIN_EXTERNAL_SOURCE_2 = blackfin-toolchain-uclibc-full-2011R1-RC4.i386.tar.bz2 TOOLCHAIN_EXTERNAL_SOURCE = $(TOOLCHAIN_EXTERNAL_SOURCE_1) $(TOOLCHAIN_EXTERNAL_SOURCE_2) else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_XILINX_MICROBLAZEEL_V2),y) TOOLCHAIN_EXTERNAL_SITE=http://git.xilinx.com/?p=xldk/microblaze_v2.0_le.git;a=blob;h=d7b493c5dbcc24ba9cc3be2e4c14d6d9701e6805;hb=00163583b771bb4e937632765dd0c5516b3e31c4;f= TOOLCHAIN_EXTERNAL_SOURCE=microblazeel-unknown-linux-gnu.tgz else ifeq ($(BR2_TOOLCHAIN_EXTERNAL_XILINX_MICROBLAZEBE_V2),y) TOOLCHAIN_EXTERNAL_SITE=http://git.xilinx.com/?p=xldk/microblaze_v2.0.git;a=blob;h=71e031ae990e063a5718f90d30cf97ad85e2f565;hb=569081301f0f1d8d3b24335a364e8ff1774190d4;f= TOOLCHAIN_EXTERNAL_SOURCE=microblaze-unknown-linux-gnu.tgz else # A value must be set (even if unused), otherwise the # $(DL_DIR)/$(TOOLCHAIN_EXTERNAL_SOURCE) rule would override the main # $(DL_DIR) rule TOOLCHAIN_EXTERNAL_SOURCE=none endif # Special handling for Blackfin toolchain, because of the split in two # tarballs, and the organization of tarball contents. The tarballs # contain ./opt/uClinux/{bfin-uclinux,bfin-linux-uclibc} directories, # which themselves contain the toolchain. This is why we strip more # components than usual. ifeq ($(BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2010RC1)$(BR2_TOOLCHAIN_EXTERNAL_BLACKFIN_UCLINUX_2011R1),y) $(DL_DIR)/$(TOOLCHAIN_EXTERNAL_SOURCE_1): $(call DOWNLOAD,$(TOOLCHAIN_EXTERNAL_SITE_1)/$(TOOLCHAIN_EXTERNAL_SOURCE_1)) $(DL_DIR)/$(TOOLCHAIN_EXTERNAL_SOURCE_2): $(call DOWNLOAD,$(TOOLCHAIN_EXTERNAL_SITE_2)/$(TOOLCHAIN_EXTERNAL_SOURCE_2)) $(TOOLCHAIN_EXTERNAL_DIR)/.extracted: $(DL_DIR)/$(TOOLCHAIN_EXTERNAL_SOURCE_1) $(DL_DIR)/$(TOOLCHAIN_EXTERNAL_SOURCE_2) mkdir -p $(@D) $(INFLATE$(suffix $(TOOLCHAIN_EXTERNAL_SOURCE_1))) $(DL_DIR)/$(TOOLCHAIN_EXTERNAL_SOURCE_1) | \ $(TAR) $(TAR_STRIP_COMPONENTS)=3 --hard-dereference -C $(@D) $(TAR_OPTIONS) - $(INFLATE$(suffix $(TOOLCHAIN_EXTERNAL_SOURCE_2))) $(DL_DIR)/$(TOOLCHAIN_EXTERNAL_SOURCE_2) | \ $(TAR) $(TAR_STRIP_COMPONENTS)=3 --hard-dereference -C $(@D) $(TAR_OPTIONS) - ifeq ($(TOOLCHAIN_EXTERNAL_PREFIX),bfin-uclinux) rm -rf $(TOOLCHAIN_EXTERNAL_DIR)/bfin-linux-uclibc mv $(TOOLCHAIN_EXTERNAL_DIR)/bfin-uclinux $(TOOLCHAIN_EXTERNAL_DIR)/tmp mv $(TOOLCHAIN_EXTERNAL_DIR)/tmp/* $(TOOLCHAIN_EXTERNAL_DIR)/ rmdir $(TOOLCHAIN_EXTERNAL_DIR)/tmp else rm -rf $(TOOLCHAIN_EXTERNAL_DIR)/bfin-uclinux mv $(TOOLCHAIN_EXTERNAL_DIR)/bfin-linux-uclibc $(TOOLCHAIN_EXTERNAL_DIR)/tmp mv $(TOOLCHAIN_EXTERNAL_DIR)/tmp/* $(TOOLCHAIN_EXTERNAL_DIR)/ rmdir $(TOOLCHAIN_EXTERNAL_DIR)/tmp endif $(Q)touch $@ else # Download and extraction of a toolchain $(DL_DIR)/$(TOOLCHAIN_EXTERNAL_SOURCE): $(call DOWNLOAD,$(TOOLCHAIN_EXTERNAL_SITE)$(TOOLCHAIN_EXTERNAL_SOURCE),$(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 --exclude='usr/lib/locale/*' -C $(@D) $(TAR_OPTIONS) - $(Q)touch $@ endif # 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: $(TOOLCHAIN_EXTERNAL_DEPENDENCIES) @echo "Checking external toolchain settings" $(Q)$(call check_cross_compiler_exists,$(TOOLCHAIN_EXTERNAL_CC)) $(Q)LIBC_A_LOCATION=`readlink -f $$(LANG=C $(TOOLCHAIN_EXTERNAL_CC) -print-file-name=libc.a)` ; \ SYSROOT_DIR=`echo $${LIBC_A_LOCATION} | sed -r -e 's:usr/lib(64)?/(.*/)?libc\.a::'` ; \ if test -z "$${SYSROOT_DIR}" ; then \ @echo "External toolchain doesn't support --sysroot. Cannot use." ; \ exit 1 ; \ fi ; \ if test x$(BR2_arm) == x"y" ; then \ $(call check_arm_abi,$(TOOLCHAIN_EXTERNAL_CC)) ; \ fi ; \ if test x$(BR2_INSTALL_LIBSTDCPP) == x"y" ; then \ $(call check_cplusplus,$(TOOLCHAIN_EXTERNAL_CXX)) ; \ fi ; \ if test x$(BR2_TOOLCHAIN_EXTERNAL_UCLIBC) == x"y" ; then \ $(call check_uclibc,$${SYSROOT_DIR}) ; \ else \ $(call check_glibc,$${SYSROOT_DIR}) ; \ fi $(Q)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). # # Variables are defined as follows: # # LIBC_A_LOCATION: location of the libc.a file in the default # multilib variant (allows to find the main # sysroot directory) # Ex: /x-tools/mips-2011.03/mips-linux-gnu/libc/usr/lib/libc.a # # SYSROOT_DIR: the main sysroot directory, deduced from # LIBC_A_LOCATION by removing the # usr/lib[64]/libc.a part of the path. # Ex: /x-tools/mips-2011.03/mips-linux-gnu/libc/ # # ARCH_LIBC_A_LOCATION: location of the libc.a file in the selected # multilib variant (taking into account the # CFLAGS). Allows to find the sysroot of the # selected multilib variant. # Ex: /x-tools/mips-2011.03/mips-linux-gnu/libc/mips16/soft-float/el/usr/lib/libc.a # # ARCH_SYSROOT_DIR: the sysroot of the selected multilib variant, # deduced from ARCH_LIBC_A_LOCATION by removing # usr/lib[64]/libc.a at the end of the path. # Ex: /x-tools/mips-2011.03/mips-linux-gnu/libc/mips16/soft-float/el/ # # ARCH_LIB_DIR: 'lib' or 'lib64' depending on where libraries are # stored. Deduced from ARCH_LIBC_A_LOCATION by # looking at usr/lib??/libc.a. # Ex: lib # # ARCH_SUBDIR: the relative location of the sysroot of the selected # multilib variant compared to the main sysroot. # Ex: mips16/soft-float/el # # SUPPORT_LIB_DIR: some toolchains, such as recent Linaro toolchains, # store GCC support libraries (libstdc++, # libgcc_s, etc.) outside of the sysroot. In # this case, SUPPORT_LIB_DIR is set to a # non-empty value, and points to the directory # where these support libraries are # available. Those libraries will be copied to # our sysroot, and the directory will also be # considered when searching libraries for copy # to the target filesystem. $(STAMP_DIR)/ext-toolchain-installed: $(STAMP_DIR)/ext-toolchain-checked $(Q)LIBC_A_LOCATION=`readlink -f $$(LANG=C $(TOOLCHAIN_EXTERNAL_CC) -print-file-name=libc.a)` ; \ SYSROOT_DIR=`echo $${LIBC_A_LOCATION} | sed -r -e 's:usr/lib(64)?/(.*/)?libc\.a::'` ; \ if test -z "$${SYSROOT_DIR}" ; then \ @echo "External toolchain doesn't support --sysroot. Cannot use." ; \ exit 1 ; \ fi ; \ ARCH_LIBC_A_LOCATION=`readlink -f $$(LANG=C $(TOOLCHAIN_EXTERNAL_CC) $(TOOLCHAIN_EXTERNAL_CFLAGS) -print-file-name=libc.a)` ; \ ARCH_SYSROOT_DIR=`echo $${ARCH_LIBC_A_LOCATION} | sed -r -e 's:usr/lib(64)?/(.*/)?libc\.a::'` ; \ ARCH_LIB_DIR=`echo $${ARCH_LIBC_A_LOCATION} | sed -r -e 's:.*/usr/(lib(64)?)/(.*/)?libc.a:\1:'` ; \ SUPPORT_LIB_DIR="" ; \ if test `find $${ARCH_SYSROOT_DIR} -name 'libstdc++.a' | wc -l` -eq 0 ; then \ LIBSTDCPP_A_LOCATION=$$(LANG=C $(TOOLCHAIN_EXTERNAL_CC) $(TOOLCHAIN_EXTERNAL_CFLAGS) -print-file-name=libstdc++.a) ; \ if [ -e "$${LIBSTDCPP_A_LOCATION}" ]; then \ SUPPORT_LIB_DIR=`readlink -f $${LIBSTDCPP_A_LOCATION} | sed -r -e 's:libstdc\+\+\.a::'` ; \ fi ; \ fi ; \ ARCH_SUBDIR=`echo $${ARCH_SYSROOT_DIR} | sed -r -e "s:^$${SYSROOT_DIR}(.*)/$$:\1:"` ; \ mkdir -p $(TARGET_DIR)/lib ; \ if test -z "$(BR2_PREFER_STATIC_LIB)" ; then \ echo "Copy external toolchain libraries to target..." ; \ for libs in $(LIB_EXTERNAL_LIBS); do \ $(call copy_toolchain_lib_root,$${ARCH_SYSROOT_DIR},$${SUPPORT_LIB_DIR},$${ARCH_LIB_DIR},$$libs,/lib); \ done ; \ for libs in $(USR_LIB_EXTERNAL_LIBS); do \ $(call copy_toolchain_lib_root,$${ARCH_SYSROOT_DIR},$${SUPPORT_LIB_DIR},$${ARCH_LIB_DIR},$$libs,/usr/lib); \ done ; \ fi ; \ echo "Copy external toolchain sysroot to staging..." ; \ $(call copy_toolchain_sysroot,$${SYSROOT_DIR},$${ARCH_SYSROOT_DIR},$${ARCH_SUBDIR},$${ARCH_LIB_DIR},$${SUPPORT_LIB_DIR}) ; \ if [ -L $${ARCH_SYSROOT_DIR}/lib64 ] ; then \ $(call create_lib64_symlinks) ; \ fi ; \ if test x"$(BR2_TOOLCHAIN_EXTERNAL_GDB_SERVER_COPY)" == x"y"; then \ gdbserver_found=0 ; \ for d in $${ARCH_SYSROOT_DIR} $${ARCH_SYSROOT_DIR}/../debug-root/ ; do \ if test -f $${d}/usr/bin/gdbserver ; then \ install -m 0755 -D $${d}/usr/bin/gdbserver $(TARGET_DIR)/usr/bin/gdbserver ; \ gdbserver_found=1 ; \ break ; \ fi ; \ done ; \ if [ $${gdbserver_found} -eq 0 ] ; then \ echo "Could not find gdbserver in external toolchain" ; \ exit 1 ; \ fi ; \ fi ; \ touch $@ # Build toolchain wrapper for preprocessor, C and C++ compiler, and setup # symlinks for everything else $(HOST_DIR)/usr/bin/ext-toolchain-wrapper: $(STAMP_DIR)/ext-toolchain-installed mkdir -p $(HOST_DIR)/usr/bin; cd $(HOST_DIR)/usr/bin; \ for i in $(TOOLCHAIN_EXTERNAL_CROSS)*; do \ base=$${i##*/}; \ case "$$base" in \ *cc|*cc-*|*++|*++-*|*cpp) \ ln -sf $(@F) $$base; \ ;; \ *) \ ln -sf $$i .; \ ;; \ esac; \ done ; $(HOSTCC) $(HOST_CFLAGS) $(TOOLCHAIN_EXTERNAL_WRAPPER_ARGS) -s \ toolchain/toolchain-external/ext-toolchain-wrapper.c -o $@ # 'uclibc' is the target to provide toolchain / staging dir uclibc: dependencies $(HOST_DIR)/usr/bin/ext-toolchain-wrapper ifeq ($(BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD),y) # download ext toolchain if so configured uclibc-source: $(addprefix $(DL_DIR)/,$(TOOLCHAIN_EXTERNAL_SOURCE)) endif