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- ################################################################################
- #
- # glibc/eglibc
- #
- ################################################################################
- GLIBC_VERSION = $(call qstrip,$(BR2_GLIBC_VERSION_STRING))
- ifeq ($(BR2_TOOLCHAIN_BUILDROOT_EGLIBC),y)
- GLIBC_SITE = http://downloads.yoctoproject.org/releases/eglibc
- GLIBC_SOURCE = eglibc-$(GLIBC_VERSION).tar.bz2
- GLIBC_SRC_SUBDIR = libc
- else
- GLIBC_SITE = $(BR2_GNU_MIRROR)/libc
- GLIBC_SOURCE = glibc-$(GLIBC_VERSION).tar.xz
- GLIBC_SRC_SUBDIR = .
- endif
- GLIBC_LICENSE = GPLv2+ (programs), LGPLv2.1+, BSD-3c, MIT (library)
- GLIBC_LICENSE_FILES = $(addprefix $(GLIBC_SRC_SUBDIR)/,COPYING COPYING.LIB LICENSES)
- # glibc is part of the toolchain so disable the toolchain dependency
- GLIBC_ADD_TOOLCHAIN_DEPENDENCY = NO
- # Before (e)glibc is configured, we must have the first stage
- # cross-compiler and the kernel headers
- GLIBC_DEPENDENCIES = host-gcc-initial linux-headers host-gawk
- GLIBC_SUBDIR = build
- GLIBC_INSTALL_STAGING = YES
- GLIBC_INSTALL_STAGING_OPT = install_root=$(STAGING_DIR) install
- # Thumb build is broken, build in ARM mode
- ifeq ($(BR2_ARM_INSTRUCTIONS_THUMB),y)
- GLIBC_EXTRA_CFLAGS += -marm
- endif
- # MIPS64 defaults to n32 so pass the correct -mabi if
- # we are using a different ABI. OABI32 is also used
- # in MIPS so we pass -mabi=32 in this case as well
- # even though it's not strictly necessary.
- ifeq ($(BR2_MIPS_NABI64),y)
- GLIBC_EXTRA_CFLAGS += -mabi=64
- else ifeq ($(BR2_MIPS_OABI32),y)
- GLIBC_EXTRA_CFLAGS += -mabi=32
- endif
- # The stubs.h header is not installed by install-headers, but is
- # needed for the gcc build. An empty stubs.h will work, as explained
- # in http://gcc.gnu.org/ml/gcc/2002-01/msg00900.html. The same trick
- # is used by Crosstool-NG.
- ifeq ($(BR2_TOOLCHAIN_BUILDROOT_GLIBC),y)
- define GLIBC_ADD_MISSING_STUB_H
- mkdir -p $(STAGING_DIR)/usr/include/gnu
- touch $(STAGING_DIR)/usr/include/gnu/stubs.h
- endef
- endif
- # Even though we use the autotools-package infrastructure, we have to
- # override the default configure commands for several reasons:
- #
- # 1. We have to build out-of-tree, but we can't use the same
- # 'symbolic link to configure' used with the gcc packages.
- #
- # 2. We have to execute the configure script with bash and not sh.
- #
- # Note that as mentionned in
- # http://patches.openembedded.org/patch/38849/, eglibc/glibc must be
- # built with -O2, so we pass our own CFLAGS and CXXFLAGS below.
- define GLIBC_CONFIGURE_CMDS
- mkdir -p $(@D)/build
- # Do the configuration
- (cd $(@D)/build; \
- $(TARGET_CONFIGURE_OPTS) \
- CFLAGS="-O2 $(GLIBC_EXTRA_CFLAGS)" CPPFLAGS="" \
- CXXFLAGS="-O2 $(GLIBC_EXTRA_CFLAGS)" \
- $(SHELL) $(@D)/$(GLIBC_SRC_SUBDIR)/configure \
- ac_cv_path_BASH_SHELL=/bin/bash \
- libc_cv_forced_unwind=yes \
- --target=$(GNU_TARGET_NAME) \
- --host=$(GNU_TARGET_NAME) \
- --build=$(GNU_HOST_NAME) \
- --prefix=/usr \
- --enable-shared \
- $(if $(BR2_SOFT_FLOAT),--without-fp,--with-fp) \
- --with-pkgversion="Buildroot" \
- --without-cvs \
- --disable-profile \
- --without-gd \
- --enable-obsolete-rpc \
- --with-headers=$(STAGING_DIR)/usr/include)
- # Install headers and start files
- $(TARGET_MAKE_ENV) $(MAKE) -C $(@D)/build \
- install_root=$(STAGING_DIR) \
- install-bootstrap-headers=yes \
- install-headers
- $(TARGET_MAKE_ENV) $(MAKE) -C $(@D)/build csu/subdir_lib
- cp $(@D)/build/csu/crt1.o $(STAGING_DIR)/usr/lib/
- cp $(@D)/build/csu/crti.o $(STAGING_DIR)/usr/lib/
- cp $(@D)/build/csu/crtn.o $(STAGING_DIR)/usr/lib/
- $(GLIBC_ADD_MISSING_STUB_H)
- $(TARGET_CROSS)gcc -nostdlib \
- -nostartfiles -shared -x c /dev/null -o $(STAGING_DIR)/usr/lib/libc.so
- endef
- #
- # We also override the install to target commands since we only want
- # to install the libraries, and nothing more.
- #
- GLIBC_LIBS_LIB = \
- ld*.so.* libc.so.* libcrypt.so.* libdl.so.* libgcc_s.so.* libm.so.* \
- libnsl.so.* libpthread.so.* libresolv.so.* librt.so.* libutil.so.* \
- libnss_files.so.* libnss_dns.so.*
- ifeq ($(BR2_PACKAGE_GDB),y)
- GLIBC_LIBS_LIB += libthread_db.so.*
- endif
- define GLIBC_INSTALL_TARGET_CMDS
- for libs in $(GLIBC_LIBS_LIB); do \
- $(call copy_toolchain_lib_root,$(STAGING_DIR)/,,lib,$$libs,/lib) ; \
- done
- endef
- $(eval $(autotools-package))
- # Before (e)glibc is built, we must have the second stage cross-compiler
- $(GLIBC_TARGET_BUILD): | host-gcc-intermediate
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