105 lines
3.4 KiB
Bash
105 lines
3.4 KiB
Bash
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#!/bin/sh
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# Copyright (c) 2015-2021 Contributors as noted in the AUTHORS file
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#
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# This file is part of Gilbraltar, a bare-metal OS for RPi4.
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#
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# Permission to use, copy, modify, and/or distribute this software
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# for any purpose with or without fee is hereby granted, provided
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# that the above copyright notice and this permission notice appear
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# in all copies.
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#
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# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL
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# WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED
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# WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE
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# AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR
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# CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS
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# OF USE, DATA OR PROFITS, WHETHER IN AN ACTION OF CONTRACT,
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# NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN
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# CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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# gen-headers.sh: Appropriate internal "C runtime" header files needed for the
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# target toolchain from the origin compiler.
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prog_NAME="$(basename $0)"
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cleanup()
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{
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rm -f conftmp.c conftmp.d conftmp*.o
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}
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die()
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{
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echo "${prog_NAME}: ERROR: $@" 1>&2
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cleanup
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exit 1
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}
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cc_is_clang()
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{
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${CC} -dM -E - </dev/null | grep -Eq '^#define __clang__ 1$'
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}
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# Arguments: PATH, FILES...
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# For the header FILES..., all of which must be relative to PATH, resolve their
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# dependencies using the C preprocessor and output a list of FILES... plus all
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# their unique dependencies, also relative to PATH.
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cc_get_header_deps()
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{
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temp="$PWD/conftmp.d"
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local path="$1"
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shift
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(
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cd ${path} || return 1
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${CC} -M "$@" >${temp} || return 1
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sed -e 's!.*\.o:!!g' -e "s!${path}/!!g" ${temp} \
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| tr ' \\' '\n' \
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| sort \
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| uniq
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rm ${temp}
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)
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}
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[ "$#" -ne 1 ] && die "Missing DESTDIR"
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DESTDIR=$1
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. ./Makeconf.sh || die "Can't find . ./Makeconf.sh"
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mkdir -p ${DESTDIR} || die "mkdir failed"
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if CC=${CONFIG_TARGET_CC} cc_is_clang; then
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case ${CONFIG_HOST} in
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# The BSDs don't ship some standard headers that we need in Clang's
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# resource directory. Appropriate these from the host system.
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FreeBSD|OpenBSD)
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SRCDIR=/usr/include
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SRCS="float.h stddef.h stdint.h stdbool.h stdarg.h"
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DEPS="$(mktemp)"
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CC=${CONFIG_TARGET_CC} cc_get_header_deps ${SRCDIR} ${SRCS} \
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>${DEPS} || \
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die "Failure getting dependencies of host headers"
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# cpio will fail if CRT_INCDIR is below a symlink, so squash that
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DESTDIR="$(readlink -f ${DESTDIR})"
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Q=
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[ "${CONFIG_HOST}" = "FreeBSD" ] && Q="--quiet"
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(cd ${SRCDIR} && cpio ${Q} -Lpdm ${DESTDIR} <${DEPS}) || \
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die "Failure copying host headers"
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rm ${DEPS}
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;;
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# Other known Clang toolchains don't require anything special here as
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# -nostdlibinc will pick up all we need from the compiler's resource
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# directory.
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*)
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;;
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esac
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else
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# For GCC there isn't an equivalent of -nostdlibinc, so we need to
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# appropriate all of its internal headers.
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SRCDIR="$(${CONFIG_TARGET_CC} -print-file-name=include)"
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[ -d "${SRCDIR}" ] || die "Cannot determine gcc include directory"
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cp -R "${SRCDIR}/." ${DESTDIR} || \
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die "Failure copying host headers"
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fi
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echo "uint64_t tscclock_monotonic(void);" > ${DESTDIR}/rpi4.h
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cleanup
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