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kumquat-buildroot/toolchain/toolchain-external/pkg-toolchain-external.mk
Yann E. MORIN ebc391a718 toolchain: check the SSP option is known 
Some toolchain vendors may have backported those options to older gcc
versions, and we have no way to know, so we have to check that the
user's selection is acceptable.

Extend the macro that currently checks for SSP in the toolchain, with
a new test that the actual SSP option is recognised and accepted.

Note that the SSP option is either totaly empty, or an already-quoted
string, so we can safely and easily assign it to a shell variable to
test and use it.

Note that we do not introduce BR2_TOOLCHAIN_HAS_SSP_STRONG, because:

  - our internal toolchain infra only supports gcc >= 4.9, so it has
    SSP strong;

  - of the external pre-built toolchains, only the codesourcery-arm
    one has a gcc-4.8 which lacks SSP strong, all the others have a
    gcc >= 4.9;

  - we'd still have to do the actual check for custom external
    toolchains anyway.

So, we're not adding BR2_TOOLCHAIN_HAS_SSP_STRONG just for a single
case.

Signed-off-by: "Yann E. MORIN" <yann.morin@orange.com>
Cc: Matt Weber <matthew.weber@rockwellcollins.com>
Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
Cc: Thomas De Schampheleire <thomas.de_schampheleire@nokia.com>
Cc: Arnout Vandecappelle <arnout@mind.be>
Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
2019-08-03 23:19:36 +02:00

591 lines
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################################################################################
# External toolchain package infrastructure
#
# This package infrastructure implements the support for external
# toolchains, i.e toolchains that are available pre-built, ready to
# use. Such toolchain may either be readily available on the Web
# (Linaro, Sourcery CodeBench, from processor vendors) or may be built
# with tools like Crosstool-NG or Buildroot itself. So far, we have
# tested this with:
#
# * Toolchains generated by Crosstool-NG
# * Toolchains generated by Buildroot
# * Toolchains provided by Linaro for the ARM and AArch64
# architectures
# * Sourcery CodeBench toolchains (from Mentor Graphics) for the ARM,
# MIPS, PowerPC, x86_64 and NIOS 2 architectures. For the MIPS
# toolchain, the -muclibc variant isn't supported yet, only the
# default glibc-based variant is.
# * Synopsys DesignWare toolchains for ARC cores
#
# The basic principle is the following
#
# 1. If the toolchain is not pre-installed, download and extract it
# in $(TOOLCHAIN_EXTERNAL_INSTALL_DIR). Otherwise,
# $(TOOLCHAIN_EXTERNAL_INSTALL_DIR) points to were the toolchain has
# already been installed by the user.
#
# 2. For all external toolchains, perform some checks on the
# conformity between the toolchain configuration described in the
# Buildroot menuconfig system, and the real configuration of the
# external toolchain. This is for example important to make sure that
# the Buildroot configuration system knows whether the toolchain
# supports RPC, IPv6, locales, large files, etc. Unfortunately, these
# things cannot be detected automatically, since the value of these
# options (such as BR2_TOOLCHAIN_HAS_NATIVE_RPC) are needed at
# configuration time because these options are used as dependencies
# for other options. And at configuration time, we are not able to
# retrieve the external toolchain configuration.
#
# 3. Copy the libraries needed at runtime to the target directory,
# $(TARGET_DIR). Obviously, things such as the C library, the dynamic
# loader and a few other utility libraries are needed if dynamic
# applications are to be executed on the target system.
#
# 4. Copy the libraries and headers to the staging directory. This
# will allow all further calls to gcc to be made using --sysroot
# $(STAGING_DIR), which greatly simplifies the compilation of the
# packages when using external toolchains. So in the end, only the
# cross-compiler binaries remains external, all libraries and headers
# are imported into the Buildroot tree.
#
# 5. Build a toolchain wrapper which executes the external toolchain
# with a number of arguments (sysroot/march/mtune/..) hardcoded,
# so we're sure the correct configuration is always used and the
# toolchain behaves similar to an internal toolchain.
# This toolchain wrapper and symlinks are installed into
# $(HOST_DIR)/bin like for the internal toolchains, and the rest
# of Buildroot is handled identical for the 2 toolchain types.
################################################################################
#
# Definitions of where the toolchain can be found
#
TOOLCHAIN_EXTERNAL_PREFIX = $(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_PREFIX))
TOOLCHAIN_EXTERNAL_DOWNLOAD_INSTALL_DIR = $(HOST_DIR)/opt/ext-toolchain
ifeq ($(BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD),y)
TOOLCHAIN_EXTERNAL_INSTALL_DIR = $(TOOLCHAIN_EXTERNAL_DOWNLOAD_INSTALL_DIR)
else
TOOLCHAIN_EXTERNAL_INSTALL_DIR = $(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_PATH))
endif
ifeq ($(TOOLCHAIN_EXTERNAL_INSTALL_DIR),)
ifneq ($(TOOLCHAIN_EXTERNAL_PREFIX),)
# if no path set, figure it out from path
TOOLCHAIN_EXTERNAL_BIN := $(dir $(shell which $(TOOLCHAIN_EXTERNAL_PREFIX)-gcc))
endif
else
TOOLCHAIN_EXTERNAL_REL_BIN_PATH = $(call qstrip,$(BR2_TOOLCHAIN_EXTERNAL_REL_BIN_PATH))
ifeq ($(TOOLCHAIN_EXTERNAL_REL_BIN_PATH),)
TOOLCHAIN_EXTERNAL_REL_BIN_PATH = bin
endif
TOOLCHAIN_EXTERNAL_BIN = $(TOOLCHAIN_EXTERNAL_INSTALL_DIR)/$(TOOLCHAIN_EXTERNAL_REL_BIN_PATH)
endif
# If this is a buildroot toolchain, it already has a wrapper which we want to
# bypass. Since this is only evaluated after it has been extracted, we can use
# $(wildcard ...) here.
TOOLCHAIN_EXTERNAL_SUFFIX = \
$(if $(wildcard $(TOOLCHAIN_EXTERNAL_BIN)/*.br_real),.br_real)
TOOLCHAIN_EXTERNAL_CROSS = $(TOOLCHAIN_EXTERNAL_BIN)/$(TOOLCHAIN_EXTERNAL_PREFIX)-
TOOLCHAIN_EXTERNAL_CC = $(TOOLCHAIN_EXTERNAL_CROSS)gcc$(TOOLCHAIN_EXTERNAL_SUFFIX)
TOOLCHAIN_EXTERNAL_CXX = $(TOOLCHAIN_EXTERNAL_CROSS)g++$(TOOLCHAIN_EXTERNAL_SUFFIX)
TOOLCHAIN_EXTERNAL_FC = $(TOOLCHAIN_EXTERNAL_CROSS)gfortran$(TOOLCHAIN_EXTERNAL_SUFFIX)
TOOLCHAIN_EXTERNAL_READELF = $(TOOLCHAIN_EXTERNAL_CROSS)readelf
# Normal handling of downloaded toolchain tarball extraction.
ifeq ($(BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD),y)
# As a regular package, the toolchain gets extracted in $(@D), but
# since it's actually a fairly special package, we need it to be moved
# into TOOLCHAIN_EXTERNAL_DOWNLOAD_INSTALL_DIR.
define TOOLCHAIN_EXTERNAL_MOVE
rm -rf $(TOOLCHAIN_EXTERNAL_DOWNLOAD_INSTALL_DIR)
mkdir -p $(TOOLCHAIN_EXTERNAL_DOWNLOAD_INSTALL_DIR)
mv $(@D)/* $(TOOLCHAIN_EXTERNAL_DOWNLOAD_INSTALL_DIR)/
endef
endif
#
# Definitions of the list of libraries that should be copied to the target.
#
TOOLCHAIN_EXTERNAL_LIBS += ld*.so* libgcc_s.so.* libatomic.so.*
ifeq ($(BR2_TOOLCHAIN_EXTERNAL_GLIBC)$(BR2_TOOLCHAIN_EXTERNAL_UCLIBC),y)
TOOLCHAIN_EXTERNAL_LIBS += libc.so.* libcrypt.so.* libdl.so.* libm.so.* libnsl.so.* libresolv.so.* librt.so.* libutil.so.*
ifeq ($(BR2_TOOLCHAIN_HAS_THREADS),y)
TOOLCHAIN_EXTERNAL_LIBS += libpthread.so.*
ifneq ($(BR2_PACKAGE_GDB)$(BR2_TOOLCHAIN_EXTERNAL_GDB_SERVER_COPY),)
TOOLCHAIN_EXTERNAL_LIBS += libthread_db.so.*
endif # gdbserver
endif # ! no threads
endif
ifeq ($(BR2_TOOLCHAIN_EXTERNAL_GLIBC),y)
TOOLCHAIN_EXTERNAL_LIBS += libnss_files.so.* libnss_dns.so.* libmvec.so.* libanl.so.*
endif
ifeq ($(BR2_TOOLCHAIN_EXTERNAL_MUSL),y)
TOOLCHAIN_EXTERNAL_LIBS += libc.so
endif
ifeq ($(BR2_INSTALL_LIBSTDCPP),y)
TOOLCHAIN_EXTERNAL_LIBS += libstdc++.so.*
endif
ifeq ($(BR2_TOOLCHAIN_HAS_FORTRAN),y)
TOOLCHAIN_EXTERNAL_LIBS += libgfortran.so.*
# fortran needs quadmath on x86 and x86_64
ifeq ($(BR2_TOOLCHAIN_HAS_LIBQUADMATH),y)
TOOLCHAIN_EXTERNAL_LIBS += libquadmath.so*
endif
endif
ifeq ($(BR2_TOOLCHAIN_HAS_OPENMP),y)
TOOLCHAIN_EXTERNAL_LIBS += libgomp.so.*
endif
TOOLCHAIN_EXTERNAL_LIBS += $(call qstrip,$(BR2_TOOLCHAIN_EXTRA_EXTERNAL_LIBS))
#
# Definition of the CFLAGS to use with the external toolchain, as well as the
# common toolchain wrapper build arguments
#
# march/mtune/floating point mode needs to be passed to the external toolchain
# to select the right multilib variant
ifeq ($(BR2_x86_64),y)
TOOLCHAIN_EXTERNAL_CFLAGS += -m64
TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_64
endif
ifneq ($(GCC_TARGET_ARCH),)
TOOLCHAIN_EXTERNAL_CFLAGS += -march=$(GCC_TARGET_ARCH)
TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_ARCH='"$(GCC_TARGET_ARCH)"'
endif
ifneq ($(GCC_TARGET_CPU),)
TOOLCHAIN_EXTERNAL_CFLAGS += -mcpu=$(GCC_TARGET_CPU)
TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_CPU='"$(GCC_TARGET_CPU)"'
endif
ifneq ($(GCC_TARGET_ABI),)
TOOLCHAIN_EXTERNAL_CFLAGS += -mabi=$(GCC_TARGET_ABI)
TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_ABI='"$(GCC_TARGET_ABI)"'
endif
ifeq ($(BR2_TOOLCHAIN_HAS_MNAN_OPTION),y)
ifneq ($(GCC_TARGET_NAN),)
TOOLCHAIN_EXTERNAL_CFLAGS += -mnan=$(GCC_TARGET_NAN)
TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_NAN='"$(GCC_TARGET_NAN)"'
endif
endif
ifneq ($(GCC_TARGET_FP32_MODE),)
TOOLCHAIN_EXTERNAL_CFLAGS += -mfp$(GCC_TARGET_FP32_MODE)
TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_FP32_MODE='"$(GCC_TARGET_FP32_MODE)"'
endif
ifneq ($(GCC_TARGET_FPU),)
TOOLCHAIN_EXTERNAL_CFLAGS += -mfpu=$(GCC_TARGET_FPU)
TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_FPU='"$(GCC_TARGET_FPU)"'
endif
ifneq ($(GCC_TARGET_FLOAT_ABI),)
TOOLCHAIN_EXTERNAL_CFLAGS += -mfloat-abi=$(GCC_TARGET_FLOAT_ABI)
TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_FLOAT_ABI='"$(GCC_TARGET_FLOAT_ABI)"'
endif
ifneq ($(GCC_TARGET_MODE),)
TOOLCHAIN_EXTERNAL_CFLAGS += -m$(GCC_TARGET_MODE)
TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_MODE='"$(GCC_TARGET_MODE)"'
endif
ifeq ($(BR2_BINFMT_FLAT),y)
TOOLCHAIN_EXTERNAL_CFLAGS += -Wl,-elf2flt
TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_BINFMT_FLAT
endif
ifeq ($(BR2_mipsel)$(BR2_mips64el),y)
TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_MIPS_TARGET_LITTLE_ENDIAN
TOOLCHAIN_EXTERNAL_CFLAGS += -EL
endif
ifeq ($(BR2_mips)$(BR2_mips64),y)
TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_MIPS_TARGET_BIG_ENDIAN
TOOLCHAIN_EXTERNAL_CFLAGS += -EB
endif
ifeq ($(BR2_arceb),y)
TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_ARC_TARGET_BIG_ENDIAN
TOOLCHAIN_EXTERNAL_CFLAGS += -EB
endif
TOOLCHAIN_EXTERNAL_CFLAGS += $(call qstrip,$(BR2_TARGET_OPTIMIZATION))
ifeq ($(BR2_SOFT_FLOAT),y)
TOOLCHAIN_EXTERNAL_CFLAGS += -msoft-float
TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += -DBR_SOFTFLOAT=1
endif
TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += \
-DBR_CROSS_PATH_SUFFIX='"$(TOOLCHAIN_EXTERNAL_SUFFIX)"'
ifeq ($(filter $(HOST_DIR)/%,$(TOOLCHAIN_EXTERNAL_BIN)),)
# TOOLCHAIN_EXTERNAL_BIN points outside HOST_DIR => absolute path
TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += \
-DBR_CROSS_PATH_ABS='"$(TOOLCHAIN_EXTERNAL_BIN)"'
else
# TOOLCHAIN_EXTERNAL_BIN points inside HOST_DIR => relative path
TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS += \
-DBR_CROSS_PATH_REL='"$(TOOLCHAIN_EXTERNAL_BIN:$(HOST_DIR)/%=%)"'
endif
#
# The following functions creates the symbolic links needed to get the
# cross-compilation tools visible in $(HOST_DIR)/bin. Some of
# links are done directly to the corresponding tool in the external
# toolchain installation directory, while some other links are done to
# the toolchain wrapper (preprocessor, C, C++ and Fortran compiler)
#
# We skip gdb symlink when we are building our own gdb to prevent two
# gdb's in $(HOST_DIR)/bin.
#
# The LTO support in gcc creates wrappers for ar, ranlib and nm which load
# the lto plugin. These wrappers are called *-gcc-ar, *-gcc-ranlib, and
# *-gcc-nm and should be used instead of the real programs when -flto is
# used. However, we should not add the toolchain wrapper for them, and they
# match the *cc-* pattern. Therefore, an additional case is added for *-ar,
# *-ranlib and *-nm.
define TOOLCHAIN_EXTERNAL_INSTALL_WRAPPER
$(Q)cd $(HOST_DIR)/bin; \
for i in $(TOOLCHAIN_EXTERNAL_CROSS)*; do \
base=$${i##*/}; \
case "$$base" in \
*-ar|*-ranlib|*-nm) \
ln -sf $$(echo $$i | sed 's%^$(HOST_DIR)%..%') .; \
;; \
*cc|*cc-*|*++|*++-*|*cpp|*-gfortran) \
ln -sf toolchain-wrapper $$base; \
;; \
*gdb|*gdbtui) \
if test "$(BR2_PACKAGE_HOST_GDB)" != "y"; then \
ln -sf $$(echo $$i | sed 's%^$(HOST_DIR)%..%') .; \
fi \
;; \
*) \
ln -sf $$(echo $$i | sed 's%^$(HOST_DIR)%..%') .; \
;; \
esac; \
done
endef
# Various utility functions used by the external toolchain package
# infrastructure. Those functions are mainly responsible for:
#
# - installation the toolchain libraries to $(TARGET_DIR)
# - copying the toolchain sysroot to $(STAGING_DIR)
# - installing a gdbinit file
#
# Details about sysroot directory selection.
#
# To find the sysroot directory, we use the trick of looking for the
# 'libc.a' file with the -print-file-name gcc option, and then
# mangling the path to find the base directory of the sysroot.
#
# Note that we do not use the -print-sysroot option, because it is
# only available since gcc 4.4.x, and we only recently dropped support
# for 4.2.x and 4.3.x.
#
# When doing this, we don't pass any option to gcc that could select a
# multilib variant (such as -march) as we want the "main" sysroot,
# which contains all variants of the C library in the case of multilib
# toolchains. We use the TARGET_CC_NO_SYSROOT variable, which is the
# path of the cross-compiler, without the --sysroot=$(STAGING_DIR),
# since what we want to find is the location of the original toolchain
# sysroot. This "main" sysroot directory is stored in SYSROOT_DIR.
#
# Then, multilib toolchains are a little bit more complicated, since
# they in fact have multiple sysroots, one for each variant supported
# by the toolchain. So we need to find the particular sysroot we're
# interested in.
#
# To do so, we ask the compiler where its sysroot is by passing all
# flags (including -march and al.), except the --sysroot flag since we
# want to the compiler to tell us where its original sysroot
# is. ARCH_SUBDIR will contain the subdirectory, in the main
# SYSROOT_DIR, that corresponds to the selected architecture
# variant. ARCH_SYSROOT_DIR will contain the full path to this
# location.
#
# One might wonder why we don't just bother with ARCH_SYSROOT_DIR. The
# fact is that in multilib toolchains, the header files are often only
# present in the main sysroot, and only the libraries are available in
# each variant-specific sysroot directory.
# toolchain_find_sysroot returns the sysroot location for the given
# compiler + flags. We need to handle cases where libc.a is in:
#
# - lib/
# - usr/lib/
# - lib32/
# - lib64/
# - lib32-fp/ (Cavium toolchain)
# - lib64-fp/ (Cavium toolchain)
# - usr/lib/<tuple>/ (Linaro toolchain)
#
# And variations on these.
define toolchain_find_sysroot
$$(printf $(call toolchain_find_libc_a,$(1)) | sed -r -e 's:/(usr/)?lib(32|64)?([^/]*)?/([^/]*/)?libc\.a:/:')
endef
# Returns the lib subdirectory for the given compiler + flags (i.e
# typically lib32 or lib64 for some toolchains)
define toolchain_find_libdir
$$(printf $(call toolchain_find_libc_a,$(1)) | sed -r -e 's:.*/(usr/)?(lib(32|64)?([^/]*)?(/[^/]*)?)/libc.a:\2:')
endef
# Returns the location of the libc.a file for the given compiler + flags
define toolchain_find_libc_a
$$(readlink -f $$(LANG=C $(1) -print-file-name=libc.a))
endef
# Integration of the toolchain into Buildroot: find the main sysroot
# and the variant-specific sysroot, then copy the needed libraries to
# the $(TARGET_DIR) and copy the whole sysroot (libraries and headers)
# to $(STAGING_DIR).
#
# Variables are defined as follows:
#
# SYSROOT_DIR: the main sysroot directory, deduced from the location of
# the libc.a file in the default multilib variant, by
# removing the usr/lib[32|64]/libc.a part of the path.
# Ex: /x-tools/mips-2011.03/mips-linux-gnu/libc/
#
# ARCH_SYSROOT_DIR: the sysroot of the selected multilib variant,
# deduced from the location of the libc.a file in the
# selected multilib variant (taking into account the
# CFLAGS), by removing usr/lib[32|64]/libc.a at the end
# of the path.
# Ex: /x-tools/mips-2011.03/mips-linux-gnu/libc/mips16/soft-float/el/
#
# ARCH_LIB_DIR: 'lib', 'lib32' or 'lib64' depending on where libraries
# are stored. Deduced from the location of the libc.a file
# in the selected multilib variant, by looking at
# usr/lib??/libc.a.
# Ex: lib
#
# ARCH_SUBDIR: the relative location of the sysroot of the selected
# multilib variant compared to the main sysroot.
# Ex: mips16/soft-float/el
#
# SUPPORT_LIB_DIR: some toolchains, such as recent Linaro toolchains,
# store GCC support libraries (libstdc++,
# libgcc_s, etc.) outside of the sysroot. In
# this case, SUPPORT_LIB_DIR is set to a
# non-empty value, and points to the directory
# where these support libraries are
# available. Those libraries will be copied to
# our sysroot, and the directory will also be
# considered when searching libraries for copy
# to the target filesystem.
#
# Please be very careful to check the major toolchain sources:
# Buildroot, Crosstool-NG, CodeSourcery and Linaro
# before doing any modification on the below logic.
ifeq ($(BR2_STATIC_LIBS),)
define TOOLCHAIN_EXTERNAL_INSTALL_TARGET_LIBS
$(Q)$(call MESSAGE,"Copying external toolchain libraries to target...")
$(Q)for libpattern in $(TOOLCHAIN_EXTERNAL_LIBS); do \
$(call copy_toolchain_lib_root,$$libpattern); \
done
endef
endif
ifeq ($(BR2_TOOLCHAIN_EXTERNAL_GDB_SERVER_COPY),y)
define TOOLCHAIN_EXTERNAL_INSTALL_TARGET_GDBSERVER
$(Q)$(call MESSAGE,"Copying gdbserver")
$(Q)ARCH_SYSROOT_DIR="$(call toolchain_find_sysroot,$(TOOLCHAIN_EXTERNAL_CC) $(TOOLCHAIN_EXTERNAL_CFLAGS))" ; \
ARCH_LIB_DIR="$(call toolchain_find_libdir,$(TOOLCHAIN_EXTERNAL_CC) $(TOOLCHAIN_EXTERNAL_CFLAGS))" ; \
gdbserver_found=0 ; \
for d in $${ARCH_SYSROOT_DIR}/usr \
$${ARCH_SYSROOT_DIR}/../debug-root/usr \
$${ARCH_SYSROOT_DIR}/usr/$${ARCH_LIB_DIR} \
$(TOOLCHAIN_EXTERNAL_INSTALL_DIR); do \
if test -f $${d}/bin/gdbserver ; then \
install -m 0755 -D $${d}/bin/gdbserver $(TARGET_DIR)/usr/bin/gdbserver ; \
gdbserver_found=1 ; \
break ; \
fi ; \
done ; \
if [ $${gdbserver_found} -eq 0 ] ; then \
echo "Could not find gdbserver in external toolchain" ; \
exit 1 ; \
fi
endef
endif
define TOOLCHAIN_EXTERNAL_INSTALL_SYSROOT_LIBS
$(Q)SYSROOT_DIR="$(call toolchain_find_sysroot,$(TOOLCHAIN_EXTERNAL_CC))" ; \
ARCH_SYSROOT_DIR="$(call toolchain_find_sysroot,$(TOOLCHAIN_EXTERNAL_CC) $(TOOLCHAIN_EXTERNAL_CFLAGS))" ; \
ARCH_LIB_DIR="$(call toolchain_find_libdir,$(TOOLCHAIN_EXTERNAL_CC) $(TOOLCHAIN_EXTERNAL_CFLAGS))" ; \
SUPPORT_LIB_DIR="" ; \
if test `find $${ARCH_SYSROOT_DIR} -name 'libstdc++.a' | wc -l` -eq 0 ; then \
LIBSTDCPP_A_LOCATION=$$(LANG=C $(TOOLCHAIN_EXTERNAL_CC) $(TOOLCHAIN_EXTERNAL_CFLAGS) -print-file-name=libstdc++.a) ; \
if [ -e "$${LIBSTDCPP_A_LOCATION}" ]; then \
SUPPORT_LIB_DIR=`readlink -f $${LIBSTDCPP_A_LOCATION} | sed -r -e 's:libstdc\+\+\.a::'` ; \
fi ; \
fi ; \
if [ "$${SYSROOT_DIR}" == "$${ARCH_SYSROOT_DIR}" ] ; then \
ARCH_SUBDIR="" ; \
elif [ "`dirname $${ARCH_SYSROOT_DIR}`" = "`dirname $${SYSROOT_DIR}`" ] ; then \
SYSROOT_DIR_DIRNAME=`dirname $${SYSROOT_DIR}`/ ; \
ARCH_SUBDIR=`echo $${ARCH_SYSROOT_DIR} | sed -r -e "s:^$${SYSROOT_DIR_DIRNAME}(.*)/$$:\1:"` ; \
else \
ARCH_SUBDIR=`echo $${ARCH_SYSROOT_DIR} | sed -r -e "s:^$${SYSROOT_DIR}(.*)/$$:\1:"` ; \
fi ; \
$(call MESSAGE,"Copying external toolchain sysroot to staging...") ; \
$(call copy_toolchain_sysroot,$${SYSROOT_DIR},$${ARCH_SYSROOT_DIR},$${ARCH_SUBDIR},$${ARCH_LIB_DIR},$${SUPPORT_LIB_DIR})
endef
# Create a symlink from (usr/)$(ARCH_LIB_DIR) to lib.
# Note: the skeleton package additionally creates lib32->lib or lib64->lib
# (as appropriate)
#
# $1: destination directory (TARGET_DIR / STAGING_DIR)
create_lib_symlinks = \
$(Q)DESTDIR="$(strip $1)" ; \
ARCH_LIB_DIR="$(call toolchain_find_libdir,$(TOOLCHAIN_EXTERNAL_CC) $(TOOLCHAIN_EXTERNAL_CFLAGS))" ; \
if [ ! -e "$${DESTDIR}/$${ARCH_LIB_DIR}" -a ! -e "$${DESTDIR}/usr/$${ARCH_LIB_DIR}" ]; then \
relpath="$(call relpath_prefix,$${ARCH_LIB_DIR})" ; \
ln -snf $${relpath}lib "$${DESTDIR}/$${ARCH_LIB_DIR}" ; \
ln -snf $${relpath}lib "$${DESTDIR}/usr/$${ARCH_LIB_DIR}" ; \
fi
define TOOLCHAIN_EXTERNAL_CREATE_STAGING_LIB_SYMLINK
$(call create_lib_symlinks,$(STAGING_DIR))
endef
define TOOLCHAIN_EXTERNAL_CREATE_TARGET_LIB_SYMLINK
$(call create_lib_symlinks,$(TARGET_DIR))
endef
#
# Generate gdbinit file for use with Buildroot
#
define TOOLCHAIN_EXTERNAL_INSTALL_GDBINIT
$(Q)if test -f $(TARGET_CROSS)gdb ; then \
$(call MESSAGE,"Installing gdbinit"); \
$(gen_gdbinit_file); \
fi
endef
# uClibc-ng dynamic loader is called ld-uClibc.so.1, but gcc is not
# patched specifically for uClibc-ng, so it continues to generate
# binaries that expect the dynamic loader to be named ld-uClibc.so.0,
# like with the original uClibc. Therefore, we create an additional
# symbolic link to make uClibc-ng systems work properly.
define TOOLCHAIN_EXTERNAL_FIXUP_UCLIBCNG_LDSO
$(Q)if test -e $(TARGET_DIR)/lib/ld-uClibc.so.1; then \
ln -sf ld-uClibc.so.1 $(TARGET_DIR)/lib/ld-uClibc.so.0 ; \
fi
$(Q)if test -e $(TARGET_DIR)/lib/ld64-uClibc.so.1; then \
ln -sf ld64-uClibc.so.1 $(TARGET_DIR)/lib/ld64-uClibc.so.0 ; \
fi
endef
################################################################################
# inner-toolchain-external-package -- defines the generic installation rules
# for external toolchain packages
#
# argument 1 is the lowercase package name
# argument 2 is the uppercase package name, including a HOST_ prefix
# for host packages
# argument 3 is the uppercase package name, without the HOST_ prefix
# for host packages
# argument 4 is the type (target or host)
################################################################################
define inner-toolchain-external-package
$(2)_INSTALL_STAGING = YES
$(2)_ADD_TOOLCHAIN_DEPENDENCY = NO
# In fact, we don't need to download the toolchain, since it is already
# available on the system, so force the site and source to be empty so
# that nothing will be downloaded/extracted.
ifeq ($$(BR2_TOOLCHAIN_EXTERNAL_PREINSTALLED),y)
$(2)_SITE =
$(2)_SOURCE =
endif
ifeq ($$(BR2_TOOLCHAIN_EXTERNAL_DOWNLOAD),y)
$(2)_EXCLUDES = usr/lib/locale/*
$(2)_POST_EXTRACT_HOOKS += \
TOOLCHAIN_EXTERNAL_MOVE
endif
# Checks for an already installed toolchain: check the toolchain
# location, check that it is usable, and then verify that it
# matches the configuration provided in Buildroot: ABI, C++ support,
# kernel headers version, type of C library and all C library features.
define $(2)_CONFIGURE_CMDS
$$(Q)$$(call check_cross_compiler_exists,$$(TOOLCHAIN_EXTERNAL_CC))
$$(Q)$$(call check_unusable_toolchain,$$(TOOLCHAIN_EXTERNAL_CC))
$$(Q)SYSROOT_DIR="$$(call toolchain_find_sysroot,$$(TOOLCHAIN_EXTERNAL_CC))" ; \
$$(call check_kernel_headers_version,\
$$(call toolchain_find_sysroot,$$(TOOLCHAIN_EXTERNAL_CC)),\
$$(call qstrip,$$(BR2_TOOLCHAIN_HEADERS_AT_LEAST))); \
$$(call check_gcc_version,$$(TOOLCHAIN_EXTERNAL_CC),\
$$(call qstrip,$$(BR2_TOOLCHAIN_GCC_AT_LEAST))); \
if test "$$(BR2_arm)" = "y" ; then \
$$(call check_arm_abi,\
"$$(TOOLCHAIN_EXTERNAL_CC) $$(TOOLCHAIN_EXTERNAL_CFLAGS)") ; \
fi ; \
if test "$$(BR2_INSTALL_LIBSTDCPP)" = "y" ; then \
$$(call check_cplusplus,$$(TOOLCHAIN_EXTERNAL_CXX)) ; \
fi ; \
if test "$$(BR2_TOOLCHAIN_HAS_FORTRAN)" = "y" ; then \
$$(call check_fortran,$$(TOOLCHAIN_EXTERNAL_FC)) ; \
fi ; \
if test "$$(BR2_TOOLCHAIN_HAS_OPENMP)" = "y" ; then \
$$(call check_openmp,$$(TOOLCHAIN_EXTERNAL_CC)) ; \
fi ; \
if test "$$(BR2_TOOLCHAIN_EXTERNAL_UCLIBC)" = "y" ; then \
$$(call check_uclibc,$$$${SYSROOT_DIR}) ; \
elif test "$$(BR2_TOOLCHAIN_EXTERNAL_MUSL)" = "y" ; then \
$$(call check_musl,\
"$$(TOOLCHAIN_EXTERNAL_CC) $$(TOOLCHAIN_EXTERNAL_CFLAGS)") ; \
else \
$$(call check_glibc,$$$${SYSROOT_DIR}) ; \
fi
$$(Q)$$(call check_toolchain_ssp,$$(TOOLCHAIN_EXTERNAL_CC),$(BR2_SSP_OPTION))
endef
$(2)_TOOLCHAIN_WRAPPER_ARGS += $$(TOOLCHAIN_EXTERNAL_TOOLCHAIN_WRAPPER_ARGS)
$(2)_BUILD_CMDS = $$(TOOLCHAIN_WRAPPER_BUILD)
define $(2)_INSTALL_STAGING_CMDS
$$(TOOLCHAIN_WRAPPER_INSTALL)
$$(TOOLCHAIN_EXTERNAL_CREATE_STAGING_LIB_SYMLINK)
$$(TOOLCHAIN_EXTERNAL_INSTALL_SYSROOT_LIBS)
$$(TOOLCHAIN_EXTERNAL_INSTALL_WRAPPER)
$$(TOOLCHAIN_EXTERNAL_INSTALL_GDBINIT)
endef
# Even though we're installing things in both the staging, the host
# and the target directory, we do everything within the
# install-staging step, arbitrarily.
define $(2)_INSTALL_TARGET_CMDS
$$(TOOLCHAIN_EXTERNAL_CREATE_TARGET_LIB_SYMLINK)
$$(TOOLCHAIN_EXTERNAL_INSTALL_TARGET_LIBS)
$$(TOOLCHAIN_EXTERNAL_INSTALL_TARGET_GDBSERVER)
$$(TOOLCHAIN_EXTERNAL_FIXUP_UCLIBCNG_LDSO)
endef
# Call the generic package infrastructure to generate the necessary
# make targets
$(call inner-generic-package,$(1),$(2),$(3),$(4))
endef
toolchain-external-package = $(call inner-toolchain-external-package,$(pkgname),$(call UPPERCASE,$(pkgname)),$(call UPPERCASE,$(pkgname)),target)
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