crosstool-ng/scripts/build/libc/newlib.sh
Alastair D'Silva 14896a2600 Support building Newlib with Link Time Optimisation
Signed-off-by: Alastair D'Silva <alastair@d-silva.org>
2017-01-10 10:51:32 +11:00

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# This file adds functions to build the Newlib C library
# Copyright 2009 DoréDevelopment
# Licensed under the GPL v2. See COPYING in the root of this package
#
# Edited by Martin Lund <mgl@doredevelopment.dk>
#
LIBC_NEWLIB_AVR_HDRS_URI="http://www.atmel.com/Images"
LIBC_NEWLIB_AVR_HDRS_BASE="avr-headers-3.2.3.970"
LIBC_NEWLIB_AVR_HDRS_EXT=".zip"
do_libc_get() {
local libc_src="{http://mirrors.kernel.org/sourceware/newlib,
ftp://sourceware.org/pub/newlib}"
if [ "${CT_LIBC_NEWLIB_CUSTOM}" = "y" ]; then
CT_GetCustom "newlib" "${CT_LIBC_NEWLIB_CUSTOM_VERSION}" \
"${CT_LIBC_NEWLIB_CUSTOM_LOCATION}"
else # ! custom location
if echo ${CT_LIBC_VERSION} |grep -q linaro; then
YYMM=`echo ${CT_LIBC_VERSION} |cut -d- -f3 |sed -e 's,^..,,'`
CT_GetFile "newlib-${CT_LIBC_VERSION}" ${libc_src} \
https://releases.linaro.org/${YYMM}/components/toolchain/newlib-linaro \
http://cbuild.validation.linaro.org/snapshots
else
CT_GetFile "newlib-${CT_LIBC_VERSION}" ${libc_src} \
http://mirrors.kernel.org/sources.redhat.com/newlib
fi
fi # ! custom location
}
do_libc_extract() {
CT_Extract "newlib-${CT_LIBC_VERSION}"
CT_Patch "newlib" "${CT_LIBC_VERSION}"
if [ -n "${CT_ARCH_XTENSA_CUSTOM_NAME}" ]; then
CT_ConfigureXtensa "newlib" "${CT_LIBC_VERSION}"
fi
}
do_libc_start_files() {
CT_DoStep INFO "Installing C library headers & start files"
CT_DoExecLog ALL cp -a "${CT_SRC_DIR}/newlib-${CT_LIBC_VERSION}/newlib/libc/include/." \
"${CT_HEADERS_DIR}"
if [ "${CT_ARCH_xtensa}" = "y" ]; then
CT_DoLog EXTRA "Installing Xtensa headers"
CT_DoExecLog ALL cp -r "${CT_SRC_DIR}/newlib-${CT_LIBC_VERSION}/newlib/libc/sys/xtensa/include/." \
"${CT_HEADERS_DIR}"
fi
CT_EndStep
}
do_libc() {
local -a newlib_opts
local cflags_for_target
CT_DoStep INFO "Installing C library"
mkdir -p "${CT_BUILD_DIR}/build-libc"
cd "${CT_BUILD_DIR}/build-libc"
CT_DoLog EXTRA "Configuring C library"
# Multilib is the default, so if it is not enabled, disable it.
if [ "${CT_MULTILIB}" != "y" ]; then
extra_config+=("--disable-multilib")
fi
if [ "${CT_LIBC_NEWLIB_IO_FLOAT}" = "y" ]; then
newlib_opts+=( "--enable-newlib-io-float" )
if [ "${CT_LIBC_NEWLIB_IO_LDBL}" = "y" ]; then
newlib_opts+=( "--enable-newlib-io-long-double" )
else
newlib_opts+=( "--disable-newlib-io-long-double" )
fi
else
newlib_opts+=( "--disable-newlib-io-float" )
newlib_opts+=( "--disable-newlib-io-long-double" )
fi
if [ "${CT_LIBC_NEWLIB_DISABLE_SUPPLIED_SYSCALLS}" = "y" ]; then
newlib_opts+=( "--disable-newlib-supplied-syscalls" )
else
newlib_opts+=( "--enable-newlib-supplied-syscalls" )
fi
yn_args="IO_POS_ARGS:newlib-io-pos-args
IO_C99FMT:newlib-io-c99-formats
IO_LL:newlib-io-long-long
NEWLIB_REGISTER_FINI:newlib-register-fini
NANO_MALLOC:newlib-nano-malloc
NANO_FORMATTED_IO:newlib-nano-formatted-io
ATEXIT_DYNAMIC_ALLOC:atexit-dynamic-alloc
GLOBAL_ATEXIT:newlib-global-atexit
LITE_EXIT:lite-exit
REENT_SMALL:reent-small
MULTITHREAD:multithread
WIDE_ORIENT:newlib-wide-orient
UNBUF_STREAM_OPT:unbuf-stream-opt
ENABLE_TARGET_OPTSPACE:target-optspace
"
for ynarg in $yn_args; do
var="CT_LIBC_NEWLIB_${ynarg%:*}"
eval var=\$${var}
argument=${ynarg#*:}
if [ "${var}" = "y" ]; then
newlib_opts+=( "--enable-$argument" )
else
newlib_opts+=( "--disable-$argument" )
fi
done
[ "${CT_LIBC_NEWLIB_EXTRA_SECTIONS}" = "y" ] && \
CT_LIBC_NEWLIB_TARGET_CFLAGS="${CT_LIBC_NEWLIB_TARGET_CFLAGS} -ffunction-sections -fdata-sections"
[ "${CT_LIBC_NEWLIB_LTO}" = "y" ] && \
CT_LIBC_NEWLIB_TARGET_CFLAGS="${CT_LIBC_NEWLIB_TARGET_CFLAGS} -flto"
[ "${CT_LIBC_NEWLIB_ENABLE_TARGET_OPTSPACE}" = "y" ] && newlib_opts+=("--enable-target-optspace")
cflags_for_target="${CT_TARGET_CFLAGS} ${CT_LIBC_NEWLIB_TARGET_CFLAGS}"
# Note: newlib handles the build/host/target a little bit differently
# than one would expect:
# build : not used
# host : the machine building newlib
# target : the machine newlib runs on
CT_DoExecLog CFG \
CC_FOR_BUILD="${CT_BUILD}-gcc" \
CFLAGS_FOR_TARGET="${cflags_for_target}" \
AR_FOR_TARGET="`which ${CT_TARGET}-gcc-ar`" \
RANLIB_FOR_TARGET="`which ${CT_TARGET}-gcc-ranlib`" \
"${CT_SRC_DIR}/newlib-${CT_LIBC_VERSION}/configure" \
--host=${CT_BUILD} \
--target=${CT_TARGET} \
--prefix=${CT_PREFIX_DIR} \
"${newlib_opts[@]}" \
"${CT_LIBC_NEWLIB_EXTRA_CONFIG_ARRAY[@]}"
CT_DoLog EXTRA "Building C library"
CT_DoExecLog ALL make ${JOBSFLAGS}
CT_DoLog EXTRA "Installing C library"
CT_DoExecLog ALL make install install_root="${CT_SYSROOT_DIR}"
if [ "${CT_BUILD_MANUALS}" = "y" ]; then
local -a doc_dir="${CT_BUILD_DIR}/build-libc/${CT_TARGET}"
CT_DoLog EXTRA "Building and installing the C library manual"
CT_DoExecLog ALL make pdf html
# NEWLIB install-{pdf.html} fail for some versions
CT_DoExecLog ALL mkdir -p "${CT_PREFIX_DIR}/share/doc/newlib"
CT_DoExecLog ALL cp -av "${doc_dir}/newlib/libc/libc.pdf" \
"${doc_dir}/newlib/libm/libm.pdf" \
"${doc_dir}/newlib/libc/libc.html" \
"${doc_dir}/newlib/libm/libm.html" \
"${CT_PREFIX_DIR}/share/doc/newlib"
fi
CT_EndStep
}
do_libc_post_cc() {
:
}