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|
################################################################################
#
# glibc
#
################################################################################
ifeq ($(BR2_arc),y)
GLIBC_VERSION = arc-2017.09-release
GLIBC_SITE = $(call github,foss-for-synopsys-dwc-arc-processors,glibc,$(GLIBC_VERSION))
GLIBC_SOURCE = glibc-$(GLIBC_VERSION).tar.gz
else
# Generate version string using:
# git describe --match 'glibc-*' --abbrev=40 origin/release/MAJOR.MINOR/master
GLIBC_VERSION = glibc-2.26-73-g4b692dffb95ac4812b161eb6a16113d7e824982e
# 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_SRC_SUBDIR = .
GLIBC_LICENSE = GPL-2.0+ (programs), LGPL-2.1+, BSD-3-Clause, MIT (library)
GLIBC_LICENSE_FILES = $(addprefix $(GLIBC_SRC_SUBDIR)/,COPYING COPYING.LIB LICENSES)
# glibc is part of the toolchain so disable the toolchain dependency
GLIBC_ADD_TOOLCHAIN_DEPENDENCY = NO
# Before glibc is configured, we must have the first stage
# cross-compiler and the kernel headers
GLIBC_DEPENDENCIES = host-gcc-initial linux-headers host-gawk
GLIBC_SUBDIR = build
GLIBC_INSTALL_STAGING = YES
GLIBC_INSTALL_STAGING_OPTS = install_root=$(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
# 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)" \
$(SHELL) $(@D)/$(GLIBC_SRC_SUBDIR)/configure \
ac_cv_path_BASH_SHELL=/bin/bash \
libc_cv_forced_unwind=yes \
libc_cv_ssp=no \
--target=$(GNU_TARGET_NAME) \
--host=$(GNU_TARGET_NAME) \
--build=$(GNU_HOST_NAME) \
--prefix=/usr \
--enable-shared \
$(if $(BR2_SOFT_FLOAT),--without-fp,--with-fp) \
$(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)
$(GLIBC_ADD_MISSING_STUB_H)
endef
#
# We also override the install to target commands since we only want
# to install the libraries, and nothing more.
#
GLIBC_LIBS_LIB = \
ld*.so.* libanl.so.* libc.so.* libcrypt.so.* libdl.so.* libgcc_s.so.* \
libm.so.* libnsl.so.* libpthread.so.* libresolv.so.* librt.so.* \
libutil.so.* libnss_files.so.* libnss_dns.so.* libmvec.so.*
ifeq ($(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))
|
