1#! /bin/sh 2 3# Copyright (C) 2001-2018 Free Software Foundation, Inc. 4# This file is part of GCC. 5 6# GCC is free software; you can redistribute it and/or modify 7# it under the terms of the GNU General Public License as published by 8# the Free Software Foundation; either version 3, or (at your option) 9# any later version. 10 11# GCC is distributed in the hope that it will be useful, 12# but WITHOUT ANY WARRANTY; without even the implied warranty of 13# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14# GNU General Public License for more details. 15 16# You should have received a copy of the GNU General Public License 17# along with GCC; see the file COPYING3. If not see 18# <http://www.gnu.org/licenses/>. 19 20 21# Generate gcc's various configuration headers: 22# config.h, tconfig.h, bconfig.h, tm.h, libgcc_tm.h, and tm_p.h. 23# $1 is the file to generate. DEFINES, HEADERS, and possibly 24# TARGET_CPU_DEFAULT are expected to be set in the environment. 25 26if [ -z "$1" ]; then 27 echo "Usage: DEFINES='list' HEADERS='list' \\" >&2 28 echo " [TARGET_CPU_DEFAULT='default'] mkconfig.sh FILE" >&2 29 exit 1 30fi 31 32output=$1 33rm -f ${output}T 34 35# This converts a file name into header guard macro format. 36hg_sed_expr='y,abcdefghijklmnopqrstuvwxyz./,ABCDEFGHIJKLMNOPQRSTUVWXYZ__,' 37header_guard=GCC_`echo ${output} | sed -e ${hg_sed_expr}` 38 39# Add multiple inclusion protection guard, part one. 40echo "#ifndef ${header_guard}" >> ${output}T 41echo "#define ${header_guard}" >> ${output}T 42 43# A special test to ensure that build-time files don't blindly use 44# config.h. 45if test x"$output" = x"config.h"; then 46 echo "#ifdef GENERATOR_FILE" >> ${output}T 47 echo "#error config.h is for the host, not build, machine." >> ${output}T 48 echo "#endif" >> ${output}T 49fi 50 51# Define TARGET_CPU_DEFAULT if the system wants one. 52# This substitutes for lots of *.h files. 53if [ "$TARGET_CPU_DEFAULT" != "" ]; then 54 echo "#define TARGET_CPU_DEFAULT ($TARGET_CPU_DEFAULT)" >> ${output}T 55fi 56 57# Provide defines for other macros set in config.gcc for this file. 58for def in $DEFINES; do 59 echo "#ifndef $def" | sed 's/=.*//' >> ${output}T 60 echo "# define $def" | sed 's/=/ /' >> ${output}T 61 echo "#endif" >> ${output}T 62done 63 64# The first entry in HEADERS may be auto-FOO.h ; 65# it wants to be included even when not -DIN_GCC. 66# Postpone including defaults.h until after the insn-* 67# headers, so that the HAVE_* flags are available 68# when defaults.h gets included. 69postpone_defaults_h="no" 70if [ -n "$HEADERS" ]; then 71 set $HEADERS 72 case "$1" in auto-* ) 73 echo "#include \"$1\"" >> ${output}T 74 shift 75 ;; 76 esac 77 if [ $# -ge 1 ]; then 78 echo '#ifdef IN_GCC' >> ${output}T 79 for file in "$@"; do 80 if test x"$file" = x"defaults.h"; then 81 postpone_defaults_h="yes" 82 else 83 echo "# include \"$file\"" >> ${output}T 84 fi 85 done 86 echo '#endif' >> ${output}T 87 fi 88fi 89 90# If this is tm.h, now include insn-flags.h only if IN_GCC is defined 91# but neither GENERATOR_FILE nor USED_FOR_TARGET is defined. (Much of this 92# is temporary.) 93 94case $output in 95 tm.h ) 96 cat >> ${output}T <<EOF 97#if defined IN_GCC && !defined GENERATOR_FILE && !defined USED_FOR_TARGET 98# include "insn-flags.h" 99#endif 100#if defined IN_GCC && !defined GENERATOR_FILE 101# include "insn-modes.h" 102#endif 103EOF 104 ;; 105esac 106 107# If we postponed including defaults.h, add the #include now. 108if test x"$postpone_defaults_h" = x"yes"; then 109 echo "# include \"defaults.h\"" >> ${output}T 110fi 111 112# Add multiple inclusion protection guard, part two. 113echo "#endif /* ${header_guard} */" >> ${output}T 114 115# Avoid changing the actual file if possible. 116if [ -f $output ] && cmp ${output}T $output >/dev/null 2>&1; then 117 echo $output is unchanged >&2 118 rm -f ${output}T 119else 120 mv -f ${output}T $output 121fi 122 123# Touch a stamp file for Make's benefit. 124rm -f cs-$output 125echo timestamp > cs-$output 126