| # Makefile fragment for building toolchain with crosstool-NG |
| |
| # As a reference, you can look at toolchain/toolchain-external/ext-tool.mk |
| # for a generic approach to external toolchains. |
| # crosstool-NG as a backend is but a kind of external toolchains, |
| # except that it is not pre-built. |
| |
| #----------------------------------------------------------------------------- |
| # 'uclibc' is the target to depend on to get the toolchain and prepare |
| # the staging directory and co. |
| uclibc: dependencies $(STAMP_DIR)/ct-ng-toolchain-installed |
| |
| #----------------------------------------------------------------------------- |
| # Internal variables |
| |
| # Crostool-NG hard-coded configuration options |
| CTNG_VERSION:=1.8.0 |
| CTNG_SITE:=http://ymorin.is-a-geek.org/download/crosstool-ng/ |
| CTNG_SOURCE:=crosstool-ng-$(CTNG_VERSION).tar.bz2 |
| CTNG_DIR:=$(BUILD_DIR)/crosstool-ng-$(CTNG_VERSION) |
| CTNG_CAT:=bzcat |
| CTNG_PATCH_DIR:=toolchain/toolchain-crosstool-ng |
| CTNG_CONFIG_FILE:=$(call qstrip,$(BR2_TOOLCHAIN_CTNG_CONFIG)) |
| CTNG_UCLIBC_CONFIG_FILE := $(TOPDIR)/toolchain/toolchain-crosstool-ng/uClibc.config |
| |
| # Hack! ct-ng is in fact a Makefile script. As such, it accepts all |
| # make options, such as -C, which makes it uneeded to chdir prior |
| # to calling ct-ng. |
| # $1: the set of arguments to pass to ct-ng |
| define ctng |
| $(CTNG_DIR)/ct-ng -C $(CTNG_DIR) --no-print-directory $(1) |
| endef |
| |
| #----------------------------------------------------------------------------- |
| # Installing the libs to target/ and staging/ |
| |
| #-------------- |
| # The generic system libraries (in /lib) |
| CTNG_LIBS_LIB := libc.so libcrypt.so libdl.so libgcc_s.so libm.so libnsl.so libpthread.so libresolv.so librt.so libutil.so |
| |
| #-------------- |
| # The libc-specific system libraries (in /lib) |
| # Note: it may be needed to tweak the NSS libs in the glibc and eglibc cases... |
| CTNG_LIBS_uClibc := ld-uClibc.so |
| CTNG_LIBS_glibc := ld-linux.so libnss_files.so libnss_dns.so |
| CTNG_LIBS_eglibc := $(CTNG_LIBS_glibc) |
| |
| #-------------- |
| # All that we need in /lib |
| CTNG_LIBS_LIB += $(CTNG_LIBS_$(call qstrip,$(BR2_TOOLCHAIN_CTNG_LIBC))) |
| |
| #-------------- |
| # All that we need in /usr/lib |
| ifneq ($(BR2_INSTALL_LIBSTDCPP),) |
| CTNG_LIBS_USR_LIB += libstdc++.so |
| endif |
| |
| #-------------- |
| # Actual copy |
| $(STAMP_DIR)/ct-ng-toolchain-installed: $(STAMP_DIR)/ct-ng-toolchain-built |
| $(Q)mkdir -p $(TARGET_DIR)/lib |
| $(Q)CTNG_TUPLE="$$( $(call ctng,show-tuple) )"; \ |
| CTNG_SYSROOT="$(TOOLCHAIN_DIR)/$${CTNG_TUPLE}/sys-root"; \ |
| echo "CTNG_TUPLE='$${CTNG_TUPLE}'"; \ |
| echo "CTNG_SYSROOT='$${CTNG_SYSROOT}'"; \ |
| echo "Copy external toolchain libraries to target..."; \ |
| for libs in $(CTNG_LIBS_LIB); do \ |
| $(call copy_toolchain_lib_root,$${CTNG_SYSROOT},$$libs,/lib,$(BR2_TOOLCHAIN_CTNG_STRIP_LIBS)); \ |
| done; \ |
| for libs in $(CTNG_LIBS_USR_LIB); do \ |
| $(call copy_toolchain_lib_root,$${CTNG_SYSROOT},$$libs,/usr/lib,$(BR2_TOOLCHAIN_CTNG_STRIP_LIBS)); \ |
| done; \ |
| echo "Copy external toolchain sysroot to staging..."; \ |
| $(call copy_toolchain_sysroot,$${CTNG_SYSROOT},$${CTNG_SYSROOT},) |
| $(Q)touch $@ |
| |
| #----------------------------------------------------------------------------- |
| # Building the toolchain |
| |
| $(STAMP_DIR)/ct-ng-toolchain-built: $(CTNG_DIR)/.config |
| $(Q)$(call ctng,build.$(BR2_JLEVEL)) |
| $(Q)printf "\n" |
| $(Q)touch $@ |
| |
| #----------------------------------------------------------------------------- |
| # Configuring the toolchain |
| |
| # Note: a lot of the following tricks would become unneeded if one day |
| # buildroot and crosstool-NG had matching options, especially for the |
| # target description: arch name, bitness, endianness... |
| |
| # Note-2: missing conformity check between BR's .config and libc features. |
| # Use check_uclibc or check_glibc. |
| |
| #-------------- |
| # Massage BR2_ARCH so that it matches CT-NG's ARCH |
| # Defaults: |
| CTNG_ARCH := $(CTNG_BR2_ARCH) |
| CTNG_ENDIAN := |
| CTNG_BIT := |
| # Architecture overides, only overide pertinent vars: |
| ifeq ($(BR2_arm),y) |
| CTNG_ARCH := arm |
| CTNG_ENDIAN := LE |
| else ifeq ($(BR2_armeb),y) |
| CTNG_ARCH := arm |
| CTNG_ENDIAN := BE |
| else ifeq ($(BR2_i386),y) |
| CTNG_ARCH := x86 |
| CTNG_BIT := 32 |
| else ifeq ($(BR2_mips),y) |
| CTNG_ARCH := mips |
| CTNG_ENDIAN := BE |
| else ifeq ($(BR2_mipsel),y) |
| CTNG_ARCH := mips |
| CTNG_ENDIAN := LE |
| else ifeq ($(BR2_powerpc),y) |
| CTNG_ARCH := powerpc |
| CTNG_BIT := 32 |
| else ifeq ($(BR2_x86_64),y) |
| CTNG_ARCH := x86 |
| CTNG_BIT := 64 |
| # Add other architecture overides below: |
| # - keep alphabetic order |
| # - duplicate next 4 lines, and uncomment |
| # else ifeq ($(BR2_<arch_name_here>),y) |
| # CTNG_ARCH := |
| # CTNG_ENDIAN := |
| # CTNG_BIT := |
| # - remove unneeded vars |
| # - add BR arch-name on ifeq line |
| # - fill-in required CTNG_* vars |
| endif |
| |
| #-------------- |
| # Massage BR options into CTNG .config file |
| # CT_ARCH : handled by the backend mechanism |
| # CT_ARCH_[BL]E : endianness |
| # CT_ARCH_(32|64) : bitness |
| # CT_PREFIX_DIR : install into BR's toolchain dir |
| # CT_INSTALL_DIR_RO : do *not* chmod a-w the toolchain dir |
| # CT_LOCAL_TARBALLS_DIR : share downloads with BR |
| # CT_SYSROOT_DIR_PREFIX : no prefix needed, really |
| # CT_TARGET_VENDOR : try to set a unique vendor string, to avoid clashing with BR's vendor string |
| # CT_TARGET_ALIAS : set the target tuple alias to REAL_GNU_TARGET_NAME so that packages' ./configure find the compiler |
| # CT_DEBUG_gdb : deselect gdb+gdbserver if buildroot builds its own |
| # CT_CC_LANG_CXX : required if we copy libstdc++.so, and build C++ |
| # CT_LIBC_UCLIBC_CONFIG_FILE: uClibc config file, if needed |
| # |
| # Lots of other awfull sed manipulations go here, to override CT-NG's .config |
| # with BR2 config options. |
| # Known missing: arch variant & options, floating point (HW/SW), uClibc/eglibc config... |
| # |
| |
| CTNG_FIX_DOT_CONFIG_SED := |
| CTNG_FIX_DOT_CONFIG_SED += s:^(CT_INSTALL_DIR_RO)=y:\# \1 is not set:; |
| CTNG_FIX_DOT_CONFIG_SED += s:^(|\# )(CT_ARCH_[BL]E).*:\# \2 is not set:; |
| CTNG_FIX_DOT_CONFIG_SED += s:^\# (CT_ARCH_$(CTNG_ENDIAN)) is not set:\1=y:; |
| CTNG_FIX_DOT_CONFIG_SED += s:^(|\# )(CT_ARCH_(32|64)).*:\# \2 is not set:; |
| CTNG_FIX_DOT_CONFIG_SED += s:^\# (CT_ARCH_$(CTNG_BIT)) is not set:\1=y:; |
| CTNG_FIX_DOT_CONFIG_SED += s:^\# (CT_ARCH_USE_MMU) is not set:\1=y:; |
| CTNG_FIX_DOT_CONFIG_SED += s:^(CT_TARGET_VENDOR)=.*:\1="buildroot_ctng":; |
| CTNG_FIX_DOT_CONFIG_SED += s:^(CT_TARGET_ALIAS)=.*:\1="$(REAL_GNU_TARGET_NAME)":; |
| CTNG_FIX_DOT_CONFIG_SED += s:^(CT_CC_PKGVERSION)="(.*)":\1="crosstool-NG $(CTNG_VERSION) - buildroot $(BR2_VERSION_FULL)":; |
| ifneq ($(call qstrip,$(BR2_PACKAGE_GDB_SERVER))$(call qstrip,$(BR2_PACKAGE_GDB_HOST)),) |
| CTNG_FIX_DOT_CONFIG_SED += s:^(CT_DEBUG_gdb)=.*:\# \1 is not set:; |
| endif |
| ifneq ($(call qstrip,$(BR2_INSTALL_LIBSTDCPP)),) |
| CTNG_FIX_DOT_CONFIG_SED += s:^\# (CT_CC_LANG_CXX) is not set:\1=y:; |
| else |
| CTNG_FIX_DOT_CONFIG_SED += s:^(CT_CC_LANG_CXX)=.*:\# \1 is not set:; |
| endif |
| |
| #-------------- |
| # And the specials for paths |
| CTNG_FIX_DOT_CONFIG_PATHS_SED := |
| CTNG_FIX_DOT_CONFIG_PATHS_SED += s:^(CT_PREFIX_DIR)=.*:\1="$(TOOLCHAIN_DIR)":; |
| CTNG_FIX_DOT_CONFIG_PATHS_SED += s:^(CT_LOCAL_TARBALLS_DIR)=.*:\1="$(DL_DIR)":; |
| CTNG_FIX_DOT_CONFIG_PATHS_SED += s:^(CT_SYSROOT_DIR_PREFIX)=.*:\1="":; |
| ifeq ($(BR2_TOOLCHAIN_CTNG_uClibc),y) |
| CTNG_FIX_DOT_CONFIG_PATHS_SED += s:^(CT_LIBC_UCLIBC_CONFIG_FILE)=.*:\1="$(CTNG_UCLIBC_CONFIG_FILE)":; |
| endif |
| |
| #-------------- |
| # Small functions to shoe-horn the above into crosstool-NG's .config |
| # $1: the .config file to munge |
| # $2: the sed expression to apply |
| define ctng-fix-dot-config |
| $(Q)sed -r -e '$(2)' $(1) >$(1).sed |
| $(Q)cmp $(1) $(1).sed >/dev/null 2>&1 && rm -f $(1).sed || mv -f $(1).sed $(1) |
| endef |
| |
| # Function to update the .config |
| # We first munge the .config to shoe-horn defaults, then we push that unto |
| # crosstool-NG's oldconfig process, to sort out wizy-wazy deps, and then we |
| # shoe-horn paths again, as they get ripped-out by oldconfig (is that a bug |
| # or a feature of kconfig?) |
| # $1: the .config file to munge |
| define ctng-oldconfig |
| $(call ctng-fix-dot-config,$(1),$(CTNG_FIX_DOT_CONFIG_SED)) |
| $(Q)yes '' |\ |
| $(call ctng,CT_IS_A_BACKEND=y \ |
| CT_BACKEND_ARCH=$(CTNG_ARCH) \ |
| CT_BACKEND_KERNEL=linux \ |
| CT_BACKEND_LIBC=$(BR2_TOOLCHAIN_CTNG_LIBC) \ |
| oldconfig ) |
| $(call ctng-fix-dot-config,$(1),$(CTNG_FIX_DOT_CONFIG_PATHS_SED)) |
| endef |
| |
| # This function checks the confguration of the toolchain did actually change |
| # If not changed, then current .config will be touched with reference to the |
| # stamp file. If the configuration did change, nothing is done. |
| # $1: the current .config to check |
| # $2: the time-stamped .config file |
| define ctng-check-config-changed |
| $(Q)old_md5="$$( grep -v -E '^(#|$$)' $(2) 2>/dev/null \ |
| |md5sum \ |
| |cut -d ' ' -f 1 \ |
| )"; \ |
| new_md5="$$( grep -v -E '^(#|$$)' $(1) 2>/dev/null \ |
| |md5sum \ |
| |cut -d ' ' -f 1 \ |
| )"; \ |
| if [ $${old_md5} = $${new_md5} -a -f $(2) ]; then \ |
| touch -r $(2) $(1); \ |
| fi |
| endef |
| |
| # Default configuration |
| # Depends on top-level .config because it has options we have to shoe-horn |
| # into crosstool-NG's .config |
| # Only copy the original .config file if we don't have one already |
| $(CTNG_DIR)/.config: $(CTNG_CONFIG_FILE) $(CTNG_DIR)/ct-ng $(CONFIG_DIR)/.config |
| $(Q)[ -f $@ ] && cp -a $@ $@.timestamp || cp -f $< $@ |
| $(call ctng-oldconfig,$@) |
| $(call ctng-check-config-changed,$@,$@.timestamp) |
| $(Q)rm -f $@.timestamp |
| |
| # Manual configuration |
| ctng-menuconfig: $(CTNG_DIR)/.config |
| $(Q)cp -a $< $<.timestamp |
| $(Q)$(call ctng,CT_IS_A_BACKEND=y \ |
| CT_BACKEND_ARCH=$(CTNG_ARCH) \ |
| CT_BACKEND_KERNEL=linux \ |
| CT_BACKEND_LIBC=$(BR2_TOOLCHAIN_CTNG_LIBC) \ |
| menuconfig ) |
| $(call ctng-oldconfig,$<) |
| $(call ctng-check-config-changed,$<,$<.timestamp) |
| $(Q)rm -f $<.timestamp |
| |
| #----------------------------------------------------------------------------- |
| # Retrieving, configuring and building crosstool-NG (as a package) |
| |
| $(DL_DIR)/$(CTNG_SOURCE): |
| $(Q)$(call DOWNLOAD,$(CTNG_SITE),$(CTNG_SOURCE)) |
| |
| $(CTNG_DIR)/.unpacked: $(DL_DIR)/$(CTNG_SOURCE) |
| $(Q)rm -rf $(CTNG_DIR) |
| $(Q)mkdir -p $(BUILD_DIR) |
| $(Q)$(CTNG_CAT) $(DL_DIR)/$(CTNG_SOURCE) |tar -C $(BUILD_DIR) $(TAR_OPTIONS) - |
| $(Q)touch $@ |
| |
| $(CTNG_DIR)/.patched: $(CTNG_DIR)/.unpacked |
| $(Q)toolchain/patch-kernel.sh $(CTNG_DIR) \ |
| $(CTNG_PATCH_DIR) \ |
| \*.patch \ |
| \*.patch.$(ARCH) |
| $(Q)touch $@ |
| |
| $(CTNG_DIR)/.configured: $(CTNG_DIR)/.patched |
| $(Q)cd $(CTNG_DIR) && ./configure --local |
| $(Q)touch $@ |
| |
| $(CTNG_DIR)/ct-ng: $(CTNG_DIR)/.configured |
| $(Q)$(MAKE) -C $(CTNG_DIR) --no-print-directory |
| $(Q)touch $@ |
