75efd6b4fa
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
277 lines
11 KiB
Makefile
277 lines
11 KiB
Makefile
# Makefile fragment for building toolchain with crosstool-NG
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# As a reference, you can look at toolchain/toolchain-external/ext-tool.mk
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# for a generic approach to external toolchains.
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# crosstool-NG as a backend is but a kind of external toolchains,
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# except that it is not pre-built.
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#-----------------------------------------------------------------------------
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# 'uclibc' is the target to depend on to get the toolchain and prepare
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# the staging directory and co.
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uclibc: dependencies $(STAMP_DIR)/ct-ng-toolchain-installed
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#-----------------------------------------------------------------------------
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# Internal variables
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# Crostool-NG hard-coded configuration options
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CTNG_VERSION:=1.8.0
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CTNG_SITE:=http://ymorin.is-a-geek.org/download/crosstool-ng/
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CTNG_SOURCE:=crosstool-ng-$(CTNG_VERSION).tar.bz2
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CTNG_DIR:=$(BUILD_DIR)/crosstool-ng-$(CTNG_VERSION)
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CTNG_CAT:=bzcat
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CTNG_PATCH_DIR:=toolchain/toolchain-crosstool-ng
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CTNG_CONFIG_FILE:=$(call qstrip,$(BR2_TOOLCHAIN_CTNG_CONFIG))
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CTNG_UCLIBC_CONFIG_FILE := $(TOPDIR)/toolchain/toolchain-crosstool-ng/uClibc.config
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# Hack! ct-ng is in fact a Makefile script. As such, it accepts all
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# make options, such as -C, which makes it uneeded to chdir prior
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# to calling ct-ng.
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# $1: the set of arguments to pass to ct-ng
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define ctng
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$(CTNG_DIR)/ct-ng -C $(CTNG_DIR) --no-print-directory $(1)
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endef
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#-----------------------------------------------------------------------------
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# Installing the libs to target/ and staging/
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#--------------
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# The generic system libraries (in /lib)
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CTNG_LIBS_LIB := libc.so libcrypt.so libdl.so libgcc_s.so libm.so libnsl.so libpthread.so libresolv.so librt.so libutil.so
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#--------------
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# The libc-specific system libraries (in /lib)
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# Note: it may be needed to tweak the NSS libs in the glibc and eglibc cases...
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CTNG_LIBS_uClibc := ld-uClibc.so
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CTNG_LIBS_glibc := ld-linux.so libnss_files.so libnss_dns.so
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CTNG_LIBS_eglibc := $(CTNG_LIBS_glibc)
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#--------------
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# All that we need in /lib
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CTNG_LIBS_LIB += $(CTNG_LIBS_$(call qstrip,$(BR2_TOOLCHAIN_CTNG_LIBC)))
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#--------------
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# All that we need in /usr/lib
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ifneq ($(BR2_INSTALL_LIBSTDCPP),)
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CTNG_LIBS_USR_LIB += libstdc++.so
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endif
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#--------------
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# Actual copy
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$(STAMP_DIR)/ct-ng-toolchain-installed: $(STAMP_DIR)/ct-ng-toolchain-built
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$(Q)mkdir -p $(TARGET_DIR)/lib
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$(Q)CTNG_TUPLE="$$( $(call ctng,show-tuple) )"; \
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CTNG_SYSROOT="$(TOOLCHAIN_DIR)/$${CTNG_TUPLE}/sys-root"; \
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echo "CTNG_TUPLE='$${CTNG_TUPLE}'"; \
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echo "CTNG_SYSROOT='$${CTNG_SYSROOT}'"; \
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echo "Copy external toolchain libraries to target..."; \
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for libs in $(CTNG_LIBS_LIB); do \
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$(call copy_toolchain_lib_root,$${CTNG_SYSROOT},$$libs,/lib,$(BR2_TOOLCHAIN_CTNG_STRIP_LIBS)); \
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done; \
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for libs in $(CTNG_LIBS_USR_LIB); do \
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$(call copy_toolchain_lib_root,$${CTNG_SYSROOT},$$libs,/usr/lib,$(BR2_TOOLCHAIN_CTNG_STRIP_LIBS)); \
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done; \
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echo "Copy external toolchain sysroot to staging..."; \
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$(call copy_toolchain_sysroot,$${CTNG_SYSROOT},$${CTNG_SYSROOT},)
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$(Q)touch $@
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#-----------------------------------------------------------------------------
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# Building the toolchain
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$(STAMP_DIR)/ct-ng-toolchain-built: $(CTNG_DIR)/.config
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$(Q)$(call ctng,build.$(BR2_JLEVEL))
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$(Q)printf "\n"
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$(Q)touch $@
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#-----------------------------------------------------------------------------
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# Configuring the toolchain
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# Note: a lot of the following tricks would become unneeded if one day
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# buildroot and crosstool-NG had matching options, especially for the
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# target description: arch name, bitness, endianness...
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# Note-2: missing conformity check between BR's .config and libc features.
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# Use check_uclibc or check_glibc.
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#--------------
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# Massage BR2_ARCH so that it matches CT-NG's ARCH
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# Defaults:
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CTNG_ARCH := $(CTNG_BR2_ARCH)
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CTNG_ENDIAN :=
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CTNG_BIT :=
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# Architecture overides, only overide pertinent vars:
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ifeq ($(BR2_arm),y)
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CTNG_ARCH := arm
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CTNG_ENDIAN := LE
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else ifeq ($(BR2_armeb),y)
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CTNG_ARCH := arm
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CTNG_ENDIAN := BE
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else ifeq ($(BR2_i386),y)
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CTNG_ARCH := x86
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CTNG_BIT := 32
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else ifeq ($(BR2_mips),y)
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CTNG_ARCH := mips
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CTNG_ENDIAN := BE
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else ifeq ($(BR2_mipsel),y)
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CTNG_ARCH := mips
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CTNG_ENDIAN := LE
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else ifeq ($(BR2_powerpc),y)
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CTNG_ARCH := powerpc
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CTNG_BIT := 32
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else ifeq ($(BR2_x86_64),y)
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CTNG_ARCH := x86
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CTNG_BIT := 64
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# Add other architecture overides below:
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# - keep alphabetic order
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# - duplicate next 4 lines, and uncomment
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# else ifeq ($(BR2_<arch_name_here>),y)
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# CTNG_ARCH :=
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# CTNG_ENDIAN :=
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# CTNG_BIT :=
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# - remove unneeded vars
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# - add BR arch-name on ifeq line
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# - fill-in required CTNG_* vars
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endif
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#--------------
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# Massage BR options into CTNG .config file
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# CT_ARCH : handled by the backend mechanism
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# CT_ARCH_[BL]E : endianness
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# CT_ARCH_(32|64) : bitness
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# CT_PREFIX_DIR : install into BR's toolchain dir
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# CT_INSTALL_DIR_RO : do *not* chmod a-w the toolchain dir
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# CT_LOCAL_TARBALLS_DIR : share downloads with BR
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# CT_SYSROOT_DIR_PREFIX : no prefix needed, really
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# CT_TARGET_VENDOR : try to set a unique vendor string, to avoid clashing with BR's vendor string
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# CT_TARGET_ALIAS : set the target tuple alias to REAL_GNU_TARGET_NAME so that packages' ./configure find the compiler
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# CT_DEBUG_gdb : deselect gdb+gdbserver if buildroot builds its own
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# CT_CC_LANG_CXX : required if we copy libstdc++.so, and build C++
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# CT_LIBC_UCLIBC_CONFIG_FILE: uClibc config file, if needed
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#
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# Lots of other awfull sed manipulations go here, to override CT-NG's .config
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# with BR2 config options.
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# Known missing: arch variant & options, floating point (HW/SW), uClibc/eglibc config...
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#
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CTNG_FIX_DOT_CONFIG_SED :=
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CTNG_FIX_DOT_CONFIG_SED += s:^(CT_INSTALL_DIR_RO)=y:\# \1 is not set:;
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CTNG_FIX_DOT_CONFIG_SED += s:^(|\# )(CT_ARCH_[BL]E).*:\# \2 is not set:;
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CTNG_FIX_DOT_CONFIG_SED += s:^\# (CT_ARCH_$(CTNG_ENDIAN)) is not set:\1=y:;
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CTNG_FIX_DOT_CONFIG_SED += s:^(|\# )(CT_ARCH_(32|64)).*:\# \2 is not set:;
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CTNG_FIX_DOT_CONFIG_SED += s:^\# (CT_ARCH_$(CTNG_BIT)) is not set:\1=y:;
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CTNG_FIX_DOT_CONFIG_SED += s:^\# (CT_ARCH_USE_MMU) is not set:\1=y:;
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CTNG_FIX_DOT_CONFIG_SED += s:^(CT_TARGET_VENDOR)=.*:\1="buildroot_ctng":;
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CTNG_FIX_DOT_CONFIG_SED += s:^(CT_TARGET_ALIAS)=.*:\1="$(REAL_GNU_TARGET_NAME)":;
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CTNG_FIX_DOT_CONFIG_SED += s:^(CT_CC_PKGVERSION)="(.*)":\1="crosstool-NG $(CTNG_VERSION) - buildroot $(BR2_VERSION_FULL)":;
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ifneq ($(call qstrip,$(BR2_PACKAGE_GDB_SERVER))$(call qstrip,$(BR2_PACKAGE_GDB_HOST)),)
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CTNG_FIX_DOT_CONFIG_SED += s:^(CT_DEBUG_gdb)=.*:\# \1 is not set:;
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endif
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ifneq ($(call qstrip,$(BR2_INSTALL_LIBSTDCPP)),)
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CTNG_FIX_DOT_CONFIG_SED += s:^\# (CT_CC_LANG_CXX) is not set:\1=y:;
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else
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CTNG_FIX_DOT_CONFIG_SED += s:^(CT_CC_LANG_CXX)=.*:\# \1 is not set:;
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endif
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#--------------
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# And the specials for paths
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CTNG_FIX_DOT_CONFIG_PATHS_SED :=
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CTNG_FIX_DOT_CONFIG_PATHS_SED += s:^(CT_PREFIX_DIR)=.*:\1="$(TOOLCHAIN_DIR)":;
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CTNG_FIX_DOT_CONFIG_PATHS_SED += s:^(CT_LOCAL_TARBALLS_DIR)=.*:\1="$(DL_DIR)":;
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CTNG_FIX_DOT_CONFIG_PATHS_SED += s:^(CT_SYSROOT_DIR_PREFIX)=.*:\1="":;
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ifeq ($(BR2_TOOLCHAIN_CTNG_uClibc),y)
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CTNG_FIX_DOT_CONFIG_PATHS_SED += s:^(CT_LIBC_UCLIBC_CONFIG_FILE)=.*:\1="$(CTNG_UCLIBC_CONFIG_FILE)":;
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endif
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#--------------
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# Small functions to shoe-horn the above into crosstool-NG's .config
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# $1: the .config file to munge
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# $2: the sed expression to apply
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define ctng-fix-dot-config
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$(Q)sed -r -e '$(2)' $(1) >$(1).sed
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$(Q)cmp $(1) $(1).sed >/dev/null 2>&1 && rm -f $(1).sed || mv -f $(1).sed $(1)
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endef
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# Function to update the .config
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# We first munge the .config to shoe-horn defaults, then we push that unto
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# crosstool-NG's oldconfig process, to sort out wizy-wazy deps, and then we
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# shoe-horn paths again, as they get ripped-out by oldconfig (is that a bug
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# or a feature of kconfig?)
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# $1: the .config file to munge
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define ctng-oldconfig
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$(call ctng-fix-dot-config,$(1),$(CTNG_FIX_DOT_CONFIG_SED))
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$(Q)yes '' |\
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$(call ctng,CT_IS_A_BACKEND=y \
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CT_BACKEND_ARCH=$(CTNG_ARCH) \
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CT_BACKEND_KERNEL=linux \
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CT_BACKEND_LIBC=$(BR2_TOOLCHAIN_CTNG_LIBC) \
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oldconfig )
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$(call ctng-fix-dot-config,$(1),$(CTNG_FIX_DOT_CONFIG_PATHS_SED))
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endef
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# This function checks the confguration of the toolchain did actually change
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# If not changed, then current .config will be touched with reference to the
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# stamp file. If the configuration did change, nothing is done.
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# $1: the current .config to check
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# $2: the time-stamped .config file
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define ctng-check-config-changed
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$(Q)old_md5="$$( grep -v -E '^(#|$$)' $(2) 2>/dev/null \
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|md5sum \
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|cut -d ' ' -f 1 \
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)"; \
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new_md5="$$( grep -v -E '^(#|$$)' $(1) 2>/dev/null \
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|md5sum \
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|cut -d ' ' -f 1 \
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)"; \
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if [ $${old_md5} = $${new_md5} -a -f $(2) ]; then \
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touch -r $(2) $(1); \
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fi
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endef
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# Default configuration
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# Depends on top-level .config because it has options we have to shoe-horn
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# into crosstool-NG's .config
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# Only copy the original .config file if we don't have one already
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$(CTNG_DIR)/.config: $(CTNG_CONFIG_FILE) $(CTNG_DIR)/ct-ng $(CONFIG_DIR)/.config
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$(Q)[ -f $@ ] && cp -a $@ $@.timestamp || cp -f $< $@
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$(call ctng-oldconfig,$@)
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$(call ctng-check-config-changed,$@,$@.timestamp)
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$(Q)rm -f $@.timestamp
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# Manual configuration
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ctng-menuconfig: $(CTNG_DIR)/.config
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$(Q)cp -a $< $<.timestamp
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$(Q)$(call ctng,CT_IS_A_BACKEND=y \
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CT_BACKEND_ARCH=$(CTNG_ARCH) \
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CT_BACKEND_KERNEL=linux \
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CT_BACKEND_LIBC=$(BR2_TOOLCHAIN_CTNG_LIBC) \
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menuconfig )
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$(call ctng-oldconfig,$<)
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$(call ctng-check-config-changed,$<,$<.timestamp)
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$(Q)rm -f $<.timestamp
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#-----------------------------------------------------------------------------
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# Retrieving, configuring and building crosstool-NG (as a package)
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$(DL_DIR)/$(CTNG_SOURCE):
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$(Q)$(call DOWNLOAD,$(CTNG_SITE),$(CTNG_SOURCE))
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$(CTNG_DIR)/.unpacked: $(DL_DIR)/$(CTNG_SOURCE)
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$(Q)rm -rf $(CTNG_DIR)
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$(Q)mkdir -p $(BUILD_DIR)
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$(Q)$(CTNG_CAT) $(DL_DIR)/$(CTNG_SOURCE) |tar -C $(BUILD_DIR) $(TAR_OPTIONS) -
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$(Q)touch $@
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$(CTNG_DIR)/.patched: $(CTNG_DIR)/.unpacked
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$(Q)toolchain/patch-kernel.sh $(CTNG_DIR) \
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$(CTNG_PATCH_DIR) \
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\*.patch \
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\*.patch.$(ARCH)
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$(Q)touch $@
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$(CTNG_DIR)/.configured: $(CTNG_DIR)/.patched
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$(Q)cd $(CTNG_DIR) && ./configure --local
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$(Q)touch $@
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$(CTNG_DIR)/ct-ng: $(CTNG_DIR)/.configured
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$(Q)$(MAKE) -C $(CTNG_DIR) --no-print-directory
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$(Q)touch $@
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