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- ################################################################################
- #
- # glibc
- #
- ################################################################################
- ifeq ($(BR2_arc),y)
- GLIBC_VERSION = arc-2018.09-release
- GLIBC_SITE = $(call github,foss-for-synopsys-dwc-arc-processors,glibc,$(GLIBC_VERSION))
- else ifeq ($(BR2_RISCV_32),y)
- GLIBC_VERSION = 4e2943456e690d89f48e6e710757dd09404b0c9a
- GLIBC_SITE = $(call github,riscv,riscv-glibc,$(GLIBC_VERSION))
- else
- # Generate version string using:
- # git describe --match 'glibc-*' --abbrev=40 origin/release/MAJOR.MINOR/master
- GLIBC_VERSION = glibc-2.28-69-g1e5c5303a522764d7e9d2302a60e4a32cdb902f1
- # Upstream doesn't officially provide an https download link.
- # There is one (https://sourceware.org/git/glibc.git) but it's not reliable,
- # sometimes the connection times out. So use an unofficial github mirror.
- # When updating the version, check it on the official repository;
- # *NEVER* decide on a version string by looking at the mirror.
- # Then check that the mirror has been synced already (happens once a day.)
- GLIBC_SITE = $(call github,bminor,glibc,$(GLIBC_VERSION))
- endif
- GLIBC_LICENSE = GPL-2.0+ (programs), LGPL-2.1+, BSD-3-Clause, MIT (library)
- GLIBC_LICENSE_FILES = COPYING COPYING.LIB LICENSES
- # glibc is part of the toolchain so disable the toolchain dependency
- GLIBC_ADD_TOOLCHAIN_DEPENDENCY = NO
- # Before glibc is configured, we must have the first stage
- # cross-compiler and the kernel headers
- GLIBC_DEPENDENCIES = host-gcc-initial linux-headers host-bison host-gawk \
- $(BR2_MAKE_HOST_DEPENDENCY)
- GLIBC_SUBDIR = build
- GLIBC_INSTALL_STAGING = YES
- GLIBC_INSTALL_STAGING_OPTS = install_root=$(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 ($(BR2_MIPS_OABI32),y)
- GLIBC_EXTRA_CFLAGS += -mabi=32
- endif
- ifeq ($(BR2_ENABLE_DEBUG),y)
- GLIBC_EXTRA_CFLAGS += -g
- 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 $(STAGING_DIR)/usr/include/gnu/stubs.h
- endef
- endif
- GLIBC_CONF_ENV = \
- ac_cv_path_BASH_SHELL=/bin/bash \
- libc_cv_forced_unwind=yes \
- libc_cv_ssp=no
- # Override the default library locations of /lib64/<abi> and
- # /usr/lib64/<abi>/ for RISC-V.
- ifeq ($(BR2_riscv),y)
- ifeq ($(BR2_RISCV_64),y)
- GLIBC_CONF_ENV += libc_cv_slibdir=/lib64 libc_cv_rtlddir=/lib
- else
- GLIBC_CONF_ENV += libc_cv_slibdir=/lib32 libc_cv_rtlddir=/lib
- endif
- endif
- # glibc requires make >= 4.0 since 2.28 release.
- # https://www.sourceware.org/ml/libc-alpha/2018-08/msg00003.html
- GLIBC_MAKE = $(BR2_MAKE)
- GLIBC_CONF_ENV += ac_cv_prog_MAKE="$(BR2_MAKE)"
- # 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/, 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)" \
- $(GLIBC_CONF_ENV) \
- $(SHELL) $(@D)/configure \
- --target=$(GNU_TARGET_NAME) \
- --host=$(GNU_TARGET_NAME) \
- --build=$(GNU_HOST_NAME) \
- --prefix=/usr \
- --enable-shared \
- $(if $(BR2_x86_64),--enable-lock-elision) \
- --with-pkgversion="Buildroot" \
- --without-cvs \
- --disable-profile \
- --without-gd \
- --enable-obsolete-rpc \
- --enable-kernel=$(call qstrip,$(BR2_TOOLCHAIN_HEADERS_AT_LEAST)) \
- --with-headers=$(STAGING_DIR)/usr/include)
- $(GLIBC_ADD_MISSING_STUB_H)
- endef
- #
- # We also override the install to target commands since we only want
- # to install the libraries, and nothing more.
- #
- GLIBC_LIBS_LIB = \
- ld*.so.* libanl.so.* libc.so.* libcrypt.so.* libdl.so.* libgcc_s.so.* \
- libm.so.* libpthread.so.* libresolv.so.* librt.so.* \
- libutil.so.* libnss_files.so.* libnss_dns.so.* libmvec.so.*
- ifeq ($(BR2_PACKAGE_GDB),y)
- GLIBC_LIBS_LIB += libthread_db.so.*
- endif
- define GLIBC_INSTALL_TARGET_CMDS
- for libpattern in $(GLIBC_LIBS_LIB); do \
- $(call copy_toolchain_lib_root,$$libpattern) ; \
- done
- endef
- $(eval $(autotools-package))
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