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Openwrt/toolchain/gcc/common.mk
Ian Cooper b933f9cf0c toolchain: remove gcc libssp and use libc variant 
Removes the standalone implementation of stack smashing protection
in gcc's libssp in favour of the native implementation available
in glibc and uclibc. Musl libc already uses its native ssp, so this
patch does not affect musl-based toolchains.

Stack smashing protection configuration options are now uniform
across all supported libc variants.

This also makes kernel-level stack smashing protection available
for x86_64 and i386 builds using non-musl libc.

Signed-off-by: Ian Cooper <iancooper@hotmail.com>
2020-06-17 23:57:07 +02:00

219 lines
6.5 KiB
Makefile
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#
# Copyright (C) 2002-2003 Erik Andersen <andersen@uclibc.org>
# Copyright (C) 2004 Manuel Novoa III <mjn3@uclibc.org>
# Copyright (C) 2005-2006 Felix Fietkau <nbd@nbd.name>
# Copyright (C) 2006-2014 OpenWrt.org
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with this program; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
include $(TOPDIR)/rules.mk
PKG_NAME:=gcc
GCC_VERSION:=$(call qstrip,$(CONFIG_GCC_VERSION))
PKG_VERSION:=$(firstword $(subst +, ,$(GCC_VERSION)))
GCC_DIR:=$(PKG_NAME)-$(PKG_VERSION)
PKG_SOURCE_URL:=@GNU/gcc/gcc-$(PKG_VERSION)
PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.xz
ifeq ($(PKG_VERSION),5.5.0)
PKG_HASH:=530cea139d82fe542b358961130c69cfde8b3d14556370b65823d2f91f0ced87
endif
ifeq ($(PKG_VERSION),7.5.0)
PKG_HASH:=b81946e7f01f90528a1f7352ab08cc602b9ccc05d4e44da4bd501c5a189ee661
endif
ifeq ($(PKG_VERSION),8.4.0)
PKG_HASH:=e30a6e52d10e1f27ed55104ad233c30bd1e99cfb5ff98ab022dc941edd1b2dd4
endif
ifeq ($(PKG_VERSION),9.3.0)
PKG_HASH:=71e197867611f6054aa1119b13a0c0abac12834765fe2d81f35ac57f84f742d1
endif
PATCH_DIR=../patches/$(GCC_VERSION)
BUGURL=http://bugs.openwrt.org/
PKGVERSION=OpenWrt GCC $(PKG_VERSION) $(REVISION)
HOST_BUILD_PARALLEL:=1
include $(INCLUDE_DIR)/toolchain-build.mk
HOST_SOURCE_DIR:=$(HOST_BUILD_DIR)
ifeq ($(GCC_VARIANT),minimal)
GCC_BUILD_DIR:=$(HOST_BUILD_DIR)-$(GCC_VARIANT)
else
HOST_BUILD_DIR:=$(HOST_BUILD_DIR)-$(GCC_VARIANT)
GCC_BUILD_DIR:=$(HOST_BUILD_DIR)
endif
HOST_STAMP_PREPARED:=$(HOST_BUILD_DIR)/.prepared
HOST_STAMP_BUILT:=$(GCC_BUILD_DIR)/.built
HOST_STAMP_CONFIGURED:=$(GCC_BUILD_DIR)/.configured
HOST_STAMP_INSTALLED:=$(HOST_BUILD_PREFIX)/stamp/.gcc_$(GCC_VARIANT)_installed
SEP:=,
TARGET_LANGUAGES:="c,c++$(if $(CONFIG_INSTALL_GFORTRAN),$(SEP)fortran)$(if $(CONFIG_INSTALL_GCCGO),$(SEP)go)"
TAR_OPTIONS += \
--exclude-from='$(CURDIR)/../exclude-testsuite' --exclude=gcc/ada/*.ad* \
--exclude=libjava
export libgcc_cv_fixed_point=no
ifdef CONFIG_INSTALL_GCCGO
export libgo_cv_c_split_stack_supported=no
endif
ifdef CONFIG_GCC_USE_GRAPHITE
GRAPHITE_CONFIGURE:= --with-isl=$(TOPDIR)/staging_dir/host
else
GRAPHITE_CONFIGURE:= --without-isl --without-cloog
endif
GCC_CONFIGURE:= \
SHELL="$(BASH)" \
$(if $(shell gcc --version 2>&1 | grep -E "Apple.(LLVM|clang)"), \
CFLAGS="-O2 -fbracket-depth=512 -pipe" \
CXXFLAGS="-O2 -fbracket-depth=512 -pipe" \
) \
$(HOST_SOURCE_DIR)/configure \
--with-bugurl=$(BUGURL) \
--with-pkgversion="$(PKGVERSION)" \
--prefix=$(TOOLCHAIN_DIR) \
--build=$(GNU_HOST_NAME) \
--host=$(GNU_HOST_NAME) \
--target=$(REAL_GNU_TARGET_NAME) \
--with-gnu-ld \
--enable-target-optspace \
--disable-libgomp \
--disable-libmudflap \
--disable-multilib \
--disable-libmpx \
--disable-nls \
--disable-libssp \
$(GRAPHITE_CONFIGURE) \
--with-host-libstdcxx=-lstdc++ \
$(SOFT_FLOAT_CONFIG_OPTION) \
$(call qstrip,$(CONFIG_EXTRA_GCC_CONFIG_OPTIONS)) \
$(if $(CONFIG_mips64)$(CONFIG_mips64el),--with-arch=mips64 \
--with-abi=$(call qstrip,$(CONFIG_MIPS64_ABI))) \
$(if $(CONFIG_arc),--with-cpu=$(CONFIG_CPU_TYPE)) \
--with-gmp=$(TOPDIR)/staging_dir/host \
--with-mpfr=$(TOPDIR)/staging_dir/host \
--with-mpc=$(TOPDIR)/staging_dir/host \
--disable-decimal-float \
--with-diagnostics-color=auto-if-env \
--enable-__cxa_atexit
ifneq ($(CONFIG_mips)$(CONFIG_mipsel),)
GCC_CONFIGURE += --with-mips-plt
endif
ifneq ($(CONFIG_GCC_DEFAULT_PIE),)
GCC_CONFIGURE+= \
--enable-default-pie
endif
ifneq ($(CONFIG_GCC_DEFAULT_SSP),)
GCC_CONFIGURE+= \
--enable-default-ssp
endif
ifneq ($(CONFIG_EXTRA_TARGET_ARCH),)
GCC_CONFIGURE+= \
--enable-biarch \
--enable-targets=$(call qstrip,$(CONFIG_EXTRA_TARGET_ARCH_NAME))-linux-$(TARGET_SUFFIX)
endif
ifdef CONFIG_sparc
GCC_CONFIGURE+= \
--enable-targets=all \
--with-long-double-128
endif
ifneq ($(GCC_ARCH),)
GCC_CONFIGURE+= --with-arch=$(GCC_ARCH)
endif
ifeq ($(CONFIG_arm),y)
GCC_CONFIGURE+= \
--with-cpu=$(word 1, $(subst +," ,$(CONFIG_CPU_TYPE)))
ifneq ($(CONFIG_SOFT_FLOAT),y)
GCC_CONFIGURE+= \
--with-fpu=$(word 2, $(subst +, ",$(CONFIG_CPU_TYPE))) \
--with-float=hard
endif
# Do not let TARGET_CFLAGS get poisoned by extra CPU optimization flags
# that do not belong here. The cpu,fpu type should be specified via
# --with-cpu and --with-fpu for ARM and not CFLAGS.
TARGET_CFLAGS:=$(filter-out -m%,$(call qstrip,$(TARGET_CFLAGS)))
endif
ifeq ($(CONFIG_TARGET_x86)$(CONFIG_USE_GLIBC)$(CONFIG_INSTALL_GCCGO),yyy)
TARGET_CFLAGS+=-fno-split-stack
endif
GCC_MAKE:= \
export SHELL="$(BASH)"; \
$(MAKE) \
CFLAGS="$(HOST_CFLAGS)" \
CFLAGS_FOR_TARGET="$(TARGET_CFLAGS)" \
CXXFLAGS_FOR_TARGET="$(TARGET_CFLAGS)" \
GOCFLAGS_FOR_TARGET="$(TARGET_CFLAGS)"
define Host/SetToolchainInfo
$(SED) 's,TARGET_CROSS=.*,TARGET_CROSS=$(REAL_GNU_TARGET_NAME)-,' $(TOOLCHAIN_DIR)/info.mk
$(SED) 's,GCC_VERSION=.*,GCC_VERSION=$(GCC_VERSION),' $(TOOLCHAIN_DIR)/info.mk
endef
ifneq ($(GCC_PREPARE),)
define Host/Prepare
$(call Host/SetToolchainInfo)
$(call Host/Prepare/Default)
ln -snf $(GCC_DIR) $(BUILD_DIR_TOOLCHAIN)/$(PKG_NAME)
$(CP) $(SCRIPT_DIR)/config.{guess,sub} $(HOST_SOURCE_DIR)/
$(SED) 's,^MULTILIB_OSDIRNAMES,# MULTILIB_OSDIRNAMES,' $(HOST_SOURCE_DIR)/gcc/config/*/t-*
$(SED) 'd' $(HOST_SOURCE_DIR)/gcc/DEV-PHASE
$(SED) 's, DATESTAMP,,' $(HOST_SOURCE_DIR)/gcc/version.c
#(cd $(HOST_SOURCE_DIR)/libstdc++-v3; autoconf;);
$(SED) 's,gcc_no_link=yes,gcc_no_link=no,' $(HOST_SOURCE_DIR)/libstdc++-v3/configure
mkdir -p $(GCC_BUILD_DIR)
endef
else
define Host/Prepare
mkdir -p $(GCC_BUILD_DIR)
endef
endif
define Host/Configure
(cd $(GCC_BUILD_DIR) && rm -f config.cache; \
$(GCC_CONFIGURE) \
);
endef
define Host/Clean
rm -rf $(if $(GCC_PREPARE),$(HOST_SOURCE_DIR)) \
$(HOST_BUILD_PREFIX)/stamp/.gcc_* \
$(HOST_BUILD_PREFIX)/stamp/.binutils_* \
$(GCC_BUILD_DIR) \
$(BUILD_DIR_TOOLCHAIN)/$(PKG_NAME) \
$(TOOLCHAIN_DIR)/$(REAL_GNU_TARGET_NAME) \
$(TOOLCHAIN_DIR)/bin/$(REAL_GNU_TARGET_NAME)-gc* \
$(TOOLCHAIN_DIR)/bin/$(REAL_GNU_TARGET_NAME)-c*
endef
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