X-Git-Url: http://git.sourceforge.jp/view?a=blobdiff_plain;f=gcc%2Fmkconfig.sh;h=9647ad7ec1666374fe4e20008b7ab4851039bae8;hb=c1dd686740946b2a63640d51cafaf66a58199820;hp=5b86b79f8b940d9c12da5cb2573ab9fc49e4a453;hpb=1f3233d13f58417984cb2239d328b65e8d172744;p=pf3gnuchains%2Fgcc-fork.git

diff --git a/gcc/mkconfig.sh b/gcc/mkconfig.sh
index 5b86b79f8b9..9647ad7ec16 100644
--- a/gcc/mkconfig.sh
+++ b/gcc/mkconfig.sh
@@ -1,87 +1,92 @@
 #! /bin/sh
 
-# Generate gcc's config.h, which is not your normal autoconf-generated
-# config.h (that's auto-(host|build).h).  $1 is the file to generate.
-# HEADERS, DEFINES, and possibly TARGET_CPU_DEFAULT are expected to be
-# set in the environment.
+# Copyright (C) 2001, 2002, 2006, 2007 Free Software Foundation, Inc.
+# This file is part of GCC.
+
+# GCC is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation; either version 3, or (at your option)
+# any later version.
+
+# GCC is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU General Public License for more details.
+
+# You should have received a copy of the GNU General Public License
+# along with GCC; see the file COPYING3.  If not see
+# <http://www.gnu.org/licenses/>.  
+
+
+# Generate gcc's various configuration headers:
+# config.h, tconfig.h, bconfig.h, tm.h, and tm_p.h.
+# $1 is the file to generate.  DEFINES, HEADERS, and possibly
+# TARGET_CPU_DEFAULT are expected to be set in the environment.
 
 if [ -z "$1" ]; then
-    echo "Usage: HEADERS='list' DEFINES='list' mkconfig.sh FILE" >&2
+    echo "Usage: DEFINES='list' HEADERS='list' \\" >&2
+    echo "  [TARGET_CPU_DEFAULT='default'] mkconfig.sh FILE" >&2
     exit 1
 fi
 
 output=$1
 rm -f ${output}T
 
+# This converts a file name into header guard macro format.
+hg_sed_expr='y,abcdefghijklmnopqrstuvwxyz./,ABCDEFGHIJKLMNOPQRSTUVWXYZ__,'
+header_guard=GCC_`echo ${output} | sed -e ${hg_sed_expr}`
+
+# Add multiple inclusion protection guard, part one.
+echo "#ifndef ${header_guard}" >> ${output}T
+echo "#define ${header_guard}" >> ${output}T
+
+# A special test to ensure that build-time files don't blindly use
+# config.h.
+if test x"$output" = x"config.h"; then
+  echo "#ifdef GENERATOR_FILE" >> ${output}T
+  echo "#error config.h is for the host, not build, machine." >> ${output}T
+  echo "#endif" >> ${output}T
+fi
+
 # Define TARGET_CPU_DEFAULT if the system wants one.
 # This substitutes for lots of *.h files.
 if [ "$TARGET_CPU_DEFAULT" != "" ]; then
     echo "#define TARGET_CPU_DEFAULT ($TARGET_CPU_DEFAULT)" >> ${output}T
 fi
 
-# The first entry in HEADERS may be auto-host.h or auto-build.h;
+# Provide defines for other macros set in config.gcc for this file.
+for def in $DEFINES; do
+    echo "#ifndef $def" | sed 's/=.*//' >> ${output}T
+    echo "# define $def" | sed 's/=/ /' >> ${output}T
+    echo "#endif" >> ${output}T
+done
+
+# The first entry in HEADERS may be auto-FOO.h ;
 # it wants to be included even when not -DIN_GCC.
 if [ -n "$HEADERS" ]; then
-    set $HEADERS; first=$1
-    case $first in auto-* )
-	echo "#include \"$first\"" >> ${output}T
+    set $HEADERS
+    case "$1" in auto-* )
+	echo "#include \"$1\"" >> ${output}T
 	shift
-	HEADERS=$*
 	;;
     esac
+    if [ $# -ge 1 ]; then
+	echo '#ifdef IN_GCC' >> ${output}T
+	for file in "$@"; do
+	    echo "# include \"$file\"" >> ${output}T
+	done
+	echo '#endif' >> ${output}T
+    fi
 fi
 
-# Provide three core typedefs used by everything, if we are compiling
-# GCC.  These used to be found in rtl.h and tree.h, but this is no
-# longer practical. Providing these in config.h/tconfig.h/hconfig.h
-# rather than system.h allows the typedefs to be used anywhere in GCC.
-case $output in 
-    *config.h | *hconfig.h | *tconfig.h)
-        cat >> ${output}T <<EOF
-#ifdef IN_GCC
-/* Provide three core typedefs used by everything, if we are compiling
-   GCC.  These used to be found in rtl.h and tree.h, but this is no
-   longer practical.  Providing these here rather that system.h allows
-   the typedefs to be used everywhere within GCC. */
-struct rtx_def;
-typedef struct rtx_def *rtx;
-struct rtvec_def;
-typedef struct rtvec_def *rtvec;
-union tree_node;
-typedef union tree_node *tree;
-#endif
-#define GTY(x)
-EOF
-        ;;
-esac
-
-if [ -n "$HEADERS" ]; then
-    echo '#ifdef IN_GCC' >> ${output}T
-    for file in $HEADERS; do
-	echo "# include \"$file\"" >> ${output}T
-    done
-    echo '#endif' >> ${output}T
-fi
+# If this is tm.h, now include insn-constants.h and insn-flags.h only
+# if IN_GCC is defined but neither GENERATOR_FILE nor USED_FOR_TARGET
+# is defined.  (Much of this is temporary.)
 
-for def in $DEFINES; do
-    echo "#ifndef $def" | sed 's/=.*//' >> ${output}T
-    echo "# define $def" | sed 's/=/ /' >> ${output}T
-    echo "#endif" >> ${output}T
-done
-
-# If this is tm_p.h, include tm-preds.h unconditionally.
-# If this is tconfig.h or hconfig.h, include no more files.
-# Otherwise, include insn-constants.h and insn-flags.h,
-# but only if GENERATOR_FILE is not defined.
 case $output in
-    *tm_p.h)
-	echo "#include \"tm-preds.h\"" >> ${output}T
-    ;;
-    *tconfig.h | *hconfig.h)
-    ;;
-    *)
+    tm.h )
         cat >> ${output}T <<EOF
-#ifndef GENERATOR_FILE
+#if defined IN_GCC && !defined GENERATOR_FILE && !defined USED_FOR_TARGET
 # include "insn-constants.h"
 # include "insn-flags.h"
 #endif
@@ -89,6 +94,9 @@ EOF
     ;;
 esac
 
+# Add multiple inclusion protection guard, part two.
+echo "#endif /* ${header_guard} */" >> ${output}T
+
 # Avoid changing the actual file if possible.
 if [ -f $output ] && cmp ${output}T $output >/dev/null 2>&1; then
     echo $output is unchanged >&2