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# This file adds functions to build the Newlib library using the 'nano' configuration
# Copyright © 2021 Keith Packard
# Licensed under the GPL v2 or later. See COPYING in the root of this package
#
# Edited by Keith Packard <keithp@keithp.com>
#
do_newlib_nano_get() { :; }
do_newlib_nano_extract() { :; }
do_newlib_nano_for_build() { :; }
do_newlib_nano_for_host() { :; }
do_newlib_nano_for_target() { :; }
if [ "${CT_COMP_LIBS_NEWLIB_NANO}" = "y" ]; then
# Download newlib_nano
do_newlib_nano_get() {
CT_Fetch NEWLIB_NANO
}
do_newlib_nano_extract() {
CT_ExtractPatch NEWLIB_NANO
}
do_newlib_nano_for_target() {
local -a newlib_nano_opts
local cflags_for_target
CT_DoStep INFO "Installing Newlib Nano library"
CT_mkdir_pushd "${CT_BUILD_DIR}/build-newlib_nano-build-${CT_BUILD}"
CT_DoLog EXTRA "Configuring Newlib Nano library"
# Multilib is the default, so if it is not enabled, disable it.
if [ "${CT_MULTILIB}" != "y" ]; then
newlib_nano_opts+=("-Dmultilib=false")
fi
if [ "${CT_LIBC_NEWLIB_NANO_IO_FLOAT}" = "y" ]; then
newlib_opts+=( "--enable-newlib-io-float" )
if [ "${CT_LIBC_NEWLIB_NANO_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_NANO_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
REGISTER_FINI:newlib-register-fini
NANO_MALLOC:newlib-nano-malloc
NANO_FORMATTED_IO:newlib-nano-formatted-io
ATEXIT_DYNAMIC_ALLOC:newlib-atexit-dynamic-alloc
GLOBAL_ATEXIT:newlib-global-atexit
LITE_EXIT:lite-exit
REENT_SMALL:newlib-reent-small
MULTITHREAD:newlib-multithread
RETARGETABLE_LOCKING:newlib-retargetable-locking
WIDE_ORIENT:newlib-wide-orient
FSEEK_OPTIMIZATION:newlib-fseek-optimization
FVWRITE_IN_STREAMIO:newlib-fvwrite-in-streamio
UNBUF_STREAM_OPT:newlib-unbuf-stream-opt
ENABLE_TARGET_OPTSPACE:target-optspace
"
for ynarg in $yn_args; do
var="CT_LIBC_NEWLIB_NANO_${ynarg%:*}"
eval var=\$${var}
argument=${ynarg#*:}
if [ "${var}" = "y" ]; then
newlib_opts+=( "--enable-$argument" )
else
newlib_opts+=( "--disable-$argument" )
fi
done
[ "${CT_LIBC_NEWLIB_NANO_EXTRA_SECTIONS}" = "y" ] && \
CT_LIBC_NEWLIB_NANO_TARGET_CFLAGS="${CT_LIBC_NEWLIB_NANO_TARGET_CFLAGS} -ffunction-sections -fdata-sections"
[ "${CT_LIBC_NEWLIB_NANO_LTO}" = "y" ] && \
CT_LIBC_NEWLIB_NANO_TARGET_CFLAGS="${CT_LIBC_NEWLIB_NANO_TARGET_CFLAGS} -flto"
cflags_for_target="${CT_ALL_TARGET_CFLAGS} ${CT_LIBC_NEWLIB_NANO_TARGET_CFLAGS}"
# Note: newlib handles the build/host/target a little bit differently
# than one would expect:
# build : not used
# host : the machine building newlib
# target : the machine newlib runs on
CT_DoExecLog CFG \
CC_FOR_BUILD="${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`" \
${CONFIG_SHELL} \
"${CT_SRC_DIR}/newlib-nano/configure" \
--host=${CT_BUILD} \
--target=${CT_TARGET} \
--prefix=${CT_PREFIX_DIR} \
--exec-prefix=${CT_PREFIX_DIR}/newlib-nano \
--libdir=${CT_PREFIX_DIR}/newlib-nano/${CT_TARGET}/lib \
"${newlib_opts[@]}" \
"${CT_LIBC_NEWLIB_NANO_EXTRA_CONFIG_ARRAY[@]}"
CT_DoLog EXTRA "Building Newlib Nano C library"
CT_DoExecLog ALL make ${CT_JOBSFLAGS}
CT_DoLog EXTRA "Installing Newlib Nano C library"
CT_DoExecLog ALL make install
CT_Popd
CT_EndStep
}
fi
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