129 lines
3.8 KiB
Bash
129 lines
3.8 KiB
Bash
#! /bin/sh
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# Copyright (C) 2001-2017 Free Software Foundation, Inc.
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# This file is part of GCC.
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# GCC is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 3, or (at your option)
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# any later version.
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# GCC is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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# You should have received a copy of the GNU General Public License
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# along with GCC; see the file COPYING3. If not see
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# <http://www.gnu.org/licenses/>.
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# Generate gcc's various configuration headers:
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# config.h, tconfig.h, bconfig.h, tm.h, libgcc_tm.h, and tm_p.h.
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# $1 is the file to generate. DEFINES, HEADERS, and possibly
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# TARGET_CPU_DEFAULT are expected to be set in the environment.
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if [ -z "$1" ]; then
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echo "Usage: DEFINES='list' HEADERS='list' \\" >&2
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echo " [TARGET_CPU_DEFAULT='default'] mkconfig.sh FILE" >&2
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exit 1
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fi
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output=$1
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rm -f ${output}T
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# This converts a file name into header guard macro format.
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hg_sed_expr='y,abcdefghijklmnopqrstuvwxyz./,ABCDEFGHIJKLMNOPQRSTUVWXYZ__,'
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header_guard=GCC_`echo ${output} | sed -e ${hg_sed_expr}`
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# Add multiple inclusion protection guard, part one.
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echo "#ifndef ${header_guard}" >> ${output}T
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echo "#define ${header_guard}" >> ${output}T
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# A special test to ensure that build-time files don't blindly use
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# config.h.
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if test x"$output" = x"config.h"; then
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echo "#ifdef GENERATOR_FILE" >> ${output}T
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echo "#error config.h is for the host, not build, machine." >> ${output}T
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echo "#endif" >> ${output}T
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fi
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# Define TARGET_CPU_DEFAULT if the system wants one.
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# This substitutes for lots of *.h files.
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if [ "$TARGET_CPU_DEFAULT" != "" ]; then
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echo "#define TARGET_CPU_DEFAULT ($TARGET_CPU_DEFAULT)" >> ${output}T
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fi
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# Provide defines for other macros set in config.gcc for this file.
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for def in $DEFINES; do
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echo "#ifndef $def" | sed 's/=.*//' >> ${output}T
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echo "# define $def" | sed 's/=/ /' >> ${output}T
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echo "#endif" >> ${output}T
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done
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# The first entry in HEADERS may be auto-FOO.h ;
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# it wants to be included even when not -DIN_GCC.
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# Postpone including defaults.h until after the insn-*
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# headers, so that the HAVE_* flags are available
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# when defaults.h gets included.
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postpone_defaults_h="no"
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if [ -n "$HEADERS" ]; then
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set $HEADERS
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case "$1" in auto-* )
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echo "#include \"$1\"" >> ${output}T
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shift
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;;
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esac
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if [ $# -ge 1 ]; then
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echo '#ifdef IN_GCC' >> ${output}T
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for file in "$@"; do
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if test x"$file" = x"defaults.h"; then
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postpone_defaults_h="yes"
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else
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echo "# include \"$file\"" >> ${output}T
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fi
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done
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echo '#endif' >> ${output}T
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fi
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fi
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# If this is tm.h, now include insn-flags.h only if IN_GCC is defined
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# but neither GENERATOR_FILE nor USED_FOR_TARGET is defined. (Much of this
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# is temporary.)
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case $output in
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tm.h )
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cat >> ${output}T <<EOF
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#if defined IN_GCC && !defined GENERATOR_FILE && !defined USED_FOR_TARGET
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# include "insn-flags.h"
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#endif
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#if defined IN_GCC && !defined GENERATOR_FILE
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# include "insn-modes.h"
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#endif
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#if defined IN_GCC && defined GENERATOR_FILE && !defined BITS_PER_UNIT
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#include "machmode.h"
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#endif
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EOF
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;;
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esac
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# If we postponed including defaults.h, add the #include now.
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if test x"$postpone_defaults_h" = x"yes"; then
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echo "# include \"defaults.h\"" >> ${output}T
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fi
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# Add multiple inclusion protection guard, part two.
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echo "#endif /* ${header_guard} */" >> ${output}T
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# Avoid changing the actual file if possible.
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if [ -f $output ] && cmp ${output}T $output >/dev/null 2>&1; then
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echo $output is unchanged >&2
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rm -f ${output}T
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else
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mv -f ${output}T $output
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fi
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# Touch a stamp file for Make's benefit.
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rm -f cs-$output
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echo timestamp > cs-$output
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