OpenWrt – Rev 4

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#
# Copyright (C) 2006-2016 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
include $(TOPDIR)/rules.mk

PKG_NAME:=glibc
PKG_VERSION:=2.26

PKG_SOURCE_PROTO:=git
PKG_SOURCE_SUBDIR:=$(PKG_NAME)-$(PKG_VERSION)
PKG_SOURCE_VERSION:=af7519f7b35024224c163e32a89fb247b0c446fc
PKG_MIRROR_HASH:=7f4d0b9d55b5820b9e2feefed03206086b3d1ddef5f02358e587948f5bb9c516
PKG_SOURCE_URL:=https://sourceware.org/git/glibc.git
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION)-$(PKG_SOURCE_VERSION).tar.xz

HOST_BUILD_DIR:=$(BUILD_DIR_TOOLCHAIN)/$(PKG_SOURCE_SUBDIR)
CUR_BUILD_DIR:=$(HOST_BUILD_DIR)-$(VARIANT)
PATCH_DIR:=$(PATH_PREFIX)/patches

include $(INCLUDE_DIR)/toolchain-build.mk

HOST_STAMP_PREPARED:=$(HOST_BUILD_DIR)/.prepared
HOST_STAMP_CONFIGURED:=$(CUR_BUILD_DIR)/.configured
HOST_STAMP_BUILT:=$(CUR_BUILD_DIR)/.built
HOST_STAMP_INSTALLED:=$(TOOLCHAIN_DIR)/stamp/.glibc_$(VARIANT)_installed

ifeq ($(ARCH),mips64)
  ifdef CONFIG_MIPS64_ABI_N64
    TARGET_CFLAGS += -mabi=64
  endif
  ifdef CONFIG_MIPS64_ABI_N32
    TARGET_CFLAGS += -mabi=n32
  endif
  ifdef CONFIG_MIPS64_ABI_O32
    TARGET_CFLAGS += -mabi=32
  endif
endif


# -Os miscompiles w. 2.24 gcc5/gcc6
# only -O2 tested by upstream changeset
# "Optimize i386 syscall inlining for GCC 5"
GLIBC_CONFIGURE:= \
        unset LD_LIBRARY_PATH; \
        BUILD_CC="$(HOSTCC)" \
        $(TARGET_CONFIGURE_OPTS) \
        CFLAGS="-O2 $(filter-out -Os,$(call qstrip,$(TARGET_CFLAGS)))" \
        libc_cv_slibdir="/lib" \
        use_ldconfig=no \
        $(HOST_BUILD_DIR)/$(GLIBC_PATH)configure \
                --prefix= \
                --build=$(GNU_HOST_NAME) \
                --host=$(REAL_GNU_TARGET_NAME) \
                --with-headers=$(TOOLCHAIN_DIR)/include \
                --disable-profile \
                --disable-werror \
                --without-gd \
                --without-cvs \
                --enable-add-ons \
                --$(if $(CONFIG_SOFT_FLOAT),without,with)-fp

export libc_cv_ssp=no
export libc_cv_ssp_strong=no
export ac_cv_header_cpuid_h=yes
export HOST_CFLAGS := $(HOST_CFLAGS) -idirafter $(CURDIR)/$(PATH_PREFIX)/include

define Host/SetToolchainInfo
        $(SED) 's,^\(LIBC_TYPE\)=.*,\1=$(PKG_NAME),' $(TOOLCHAIN_DIR)/info.mk
        $(SED) 's,^\(LIBC_URL\)=.*,\1=http://www.gnu.org/software/libc/,' $(TOOLCHAIN_DIR)/info.mk
        $(SED) 's,^\(LIBC_VERSION\)=.*,\1=$(PKG_VERSION),' $(TOOLCHAIN_DIR)/info.mk
        $(SED) 's,^\(LIBC_SO_VERSION\)=.*,\1=$(PKG_VERSION),' $(TOOLCHAIN_DIR)/info.mk
endef

define Host/Configure
        [ -f $(HOST_BUILD_DIR)/.autoconf ] || { \
                cd $(HOST_BUILD_DIR)/; \
                autoconf --force && \
                touch $(HOST_BUILD_DIR)/.autoconf; \
        }
        mkdir -p $(CUR_BUILD_DIR)
        ( cd $(CUR_BUILD_DIR); rm -f config.cache; \
                $(GLIBC_CONFIGURE) \
        );
endef

define Host/Prepare
        $(call Host/Prepare/Default)
        ln -snf $(PKG_SOURCE_SUBDIR) $(BUILD_DIR_TOOLCHAIN)/$(PKG_NAME)
endef

define Host/Clean
        rm -rf $(CUR_BUILD_DIR)* \
                $(BUILD_DIR_TOOLCHAIN)/$(LIBC)-dev \
                $(BUILD_DIR_TOOLCHAIN)/$(PKG_NAME)
endef