342 lines
10 KiB
Bash
Executable File
342 lines
10 KiB
Bash
Executable File
#!/bin/sh
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#
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# SYNOPSIS
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# fixproto TARGET-DIR SOURCE-DIR-ALL SOURCE-DIR-STD
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#
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# COPYRIGHT
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# Copyright (C) 1993, 1994, 1997, 1998, 2002, 2003
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# Free Software Foundation, Inc.
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# This file is part of GCC.
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#
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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 2, or (at your option)
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# any later version.
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#
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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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#
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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 COPYING. If not, write to
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# the Free Software Foundation, 51 Franklin Street, Fifth Floor,
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# Boston, MA 02110-1301, USA.
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#
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# DESCRIPTION
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# Adjunct script for GCC to populate a directory with ANSI,
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# Posix.1, and C++ compatible header files.
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#
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# Each file found under SOURCE-DIR-ALL is analyzed and "fixed."
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# Only standard ANSI/POSIX files found under SOURCE-DIR-STD
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# are analyzed and "fixed."
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# The SOURCE-DIRs are searched in order; a file found
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# under multiple SOURCE-DIRs is only handled for the first one.
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#
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# STRATEGY
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# Each include file is fed through cpp, and the scan-decls program
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# parses it, and emits any found function declarations.
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# The fix-header program analyzes the scan-decls output,
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# together with the original include file, and writes a "fixed"
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# include file, if needed.
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#
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# The comment at the beginning of fix-header.c lists specifically
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# what kind of changes are made.
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#
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# NOTE
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# Some file space will be wasted, because the original header
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# files are copied. An earlier version just included the original
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# by "reference", using GNU cpp's #include_next mechanism.
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# This is currently not done, partly because #include_next is
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# fragile (susceptible to version incompatibilities, and depends
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# and GCC-specific features), and partly for performance reasons.
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#
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# AUTHORS
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# Ron Guilmette (rfg@netcom.com) (original idea and code)
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# Per Bothner (bothner@cygnus.com) (major re-write)
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dirname=`echo "$0" | sed 's,^[^/]*$,.,;s,//*[^/]*$,,'`
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progname=`echo "$0" | sed 's,.*/,,'`
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original_dir=`${PWDCMD-pwd}`
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FIX_HEADER=${FIX_HEADER-$original_dir/fix-header}
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DEFINES="-D__STDC__=0 -D__cplusplus ${FIXPROTO_DEFINES}"
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if mkdir -p . 2> /dev/null; then
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# Great, mkdir accepts -p
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mkinstalldirs="mkdir -p"
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else
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# We expect mkinstalldirs to be passed in the environment.
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# If it is not, assume it is in the directory that contains this script.
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mkinstalldirs=${mkinstalldirs-"/bin/sh $dirname/mkinstalldirs"}
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if $mkinstalldirs . 2> /dev/null; then
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:
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else
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# But, in case of failure, fallback to plain mkdir, and hope it works
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mkinstalldirs=mkdir
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fi
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fi
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if [ `echo $1 | wc -w` = 0 ] ; then
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echo $progname\: usage\: $progname target-dir \[ source-dir \.\.\. \]
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exit 1
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fi
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std_files="ctype.h dirent.h errno.h curses.h fcntl.h grp.h locale.h math.h pwd.h setjmp.h signal.h stdio.h stdlib.h string.h sys/socket.h sys/stat.h sys/times.h sys/resource.h sys/utsname.h sys/wait.h tar.h termios.h time.h unistd.h utime.h"
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rel_target_dir=$1
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# All files in $src_dir_all (normally same as $rel_target_dir) are
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# processed.
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src_dir_all=$2
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# In $src_dir_std (normally same as /usr/include), only the
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# "standard" ANSI/POSIX files listed in $std_files are processed.
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src_dir_std=$3
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case $rel_target_dir in
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/* | [A-Za-z]:[\\/]*)
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abs_target_dir=$rel_target_dir
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;;
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*)
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abs_target_dir=$original_dir/$rel_target_dir
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;;
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esac
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# Determine whether this system has symbolic links.
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if ln -s X $rel_target_dir/ShouldNotExist 2>/dev/null; then
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rm -f $rel_target_dir/ShouldNotExist
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LINKS=true
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elif ln -s X /tmp/ShouldNotExist 2>/dev/null; then
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rm -f /tmp/ShouldNotExist
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LINKS=true
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else
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LINKS=false
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fi
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if [ \! -d $abs_target_dir ] ; then
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echo $progname\: creating directory $rel_target_dir
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$mkinstalldirs $abs_target_dir
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fi
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echo $progname\: populating \`$rel_target_dir\'
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include_path=""
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if [ `echo $* | wc -w` != 0 ] ; then
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for rel_source_dir in $src_dir_all $src_dir_std; do
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case $rel_source_dir in
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/* | [A-Za-z]:[\\/]*)
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abs_source_dir=$rel_source_dir
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;;
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*)
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abs_source_dir=$original_dir/$rel_source_dir
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;;
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esac
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include_path="$include_path -I$abs_source_dir"
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done
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fi
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done_dirs=""
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subdirs_made=""
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echo "" >fixproto.list
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for code in ALL STD ; do
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subdirs="."
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case $code in
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ALL)
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rel_source_dir=$src_dir_all
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dirs="."
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levels=2
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while $LINKS && test -n "$dirs" -a $levels -gt 0
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do
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levels=`expr $levels - 1`
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newdirs=
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for d in $dirs ; do
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# Find all directories under $d, relative to $d, excluding $d itself.
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# Assume directory names ending in CC or containing ++ are
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# for C++, so skip those.
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subdirs="$subdirs "`cd $rel_source_dir/$d; find . -type d -print | \
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sed -e '/^\.$/d' -e "s|^\./|${d}/|" -e 's|^\./||' \
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-e '/CC$/d' -e '/[+][+]/d'`
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links=
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links=`cd $rel_source_dir; find $d/. -type l -print | \
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sed -e "s|$d/./|$d/|" -e 's|^\./||'`
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for link in $links --dummy-- ; do
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test -d $rel_source_dir/$link/. && newdirs="$newdirs $link"
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done
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done
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dirs="$newdirs"
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subdirs="$subdirs $newdirs"
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done
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;;
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STD)
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rel_source_dir=$src_dir_std
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;;
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esac
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case $rel_source_dir in
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/* | [A-Za-z]:[\\/]*)
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abs_source_dir=$rel_source_dir
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;;
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*)
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abs_source_dir=$original_dir/$rel_source_dir
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;;
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esac
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if [ \! -d $abs_source_dir ] ; then
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echo $progname\: warning\: no such directory\: \`$rel_source_dir\'
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continue
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fi
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for rel_source_subdir in $subdirs; do
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abs_target_subdir=${abs_target_dir}/${rel_source_subdir}
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if [ \! -d $abs_target_subdir ] ; then
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if $mkinstalldirs $abs_target_subdir ; then
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subdirs_made="$abs_target_subdir $subdirs_made"
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fi
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fi
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# Append "/"; remove initial "./". Hence "." -> "" and "sys" -> "sys/".
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rel_source_prefix=`echo $rel_source_subdir | sed -e 's|$|/|' -e 's|^./||'`
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case $code in
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ALL)
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# The 'sed' is in case the *.h matches nothing, which yields "*.h"
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# which would then get re-globbed in the current directory. Sigh.
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rel_source_files=`cd ${abs_source_dir}/${rel_source_subdir}; echo *.h | sed -e 's|[*].h|NONE|'`
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;;
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STD)
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files_to_check="$std_files"
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rel_source_files=""
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# Also process files #included by the $std_files.
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while [ -n "${files_to_check}" ]
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do
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new_files_to_check=""
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for file in $files_to_check ; do
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xxfile=`echo $file | sed -e 's|/\([^/\.][^/\.]*\)/\.\./|/|'`
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# Create the dir where this file will go when fixed.
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xxdir=`echo ./$file | sed -e 's|/[^/]*$||'`
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if [ \! -d $abs_target_subdir/$xxdir ] ; then
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if $mkinstalldirs $abs_target_subdir/$xxdir ; then
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subdirs_made="$abs_target_subdir/$xxdir $subdirs_made"
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fi
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fi
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# Just in case we have edited out a symbolic link
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if [ -f $src_dir_std/$file -a -f $src_dir_std/$xxfile ] ; then
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file=$xxfile
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fi
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case " $rel_source_files " in
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*" ${file} "*)
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# Already seen $file; nothing to do
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;;
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*)
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if test -f $src_dir_std/$file ; then
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rel_dir=`echo $file | sed -n -e 's|^\(.*/\)[^/]*$|\1|p'`
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# For #include "foo.h", that might be either "foo.h"
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# or "${rel_dir}foo.h (or something bogus).
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new_files_to_check="$new_files_to_check "`sed -n \
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-e 's@ @ @g' \
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-e 's@^ *# *include *<\([^>]*\)>.*$@\1@p' -e \
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's@^ *# *include *\"\([^\"]*\)\".*$@\1 '$rel_dir'\1@p'\
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<$src_dir_std/$file`
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rel_source_files="$rel_source_files $file"
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fi
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;;
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esac
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done
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files_to_check="$new_files_to_check"
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done
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rel_source_files="$rel_source_files"
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;;
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esac
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for filename in $rel_source_files ; do
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rel_source_file=${rel_source_prefix}${filename}
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abs_source_file=$abs_source_dir/$rel_source_file
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abs_target_file=$abs_target_dir/$rel_source_file
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if test "$filename" = 'NONE' ; then
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echo "(No *.h files in $abs_source_dir/$rel_source_subdir)"
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# If target file exists, check if was written while processing one
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# of the earlier source directories; if so ignore it.
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elif test -f $abs_target_file -a -n "$done_dirs" \
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&& grep "$rel_source_file" fixproto.list >/dev/null
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then true
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else
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$FIX_HEADER $rel_source_file $abs_source_file $abs_target_file ${DEFINES} $include_path
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if test $? != 0 ; then exit 1 ; fi
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echo "${rel_source_file}" >>fixproto.list
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fi
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done
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done
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done_dirs="$done_dir $rel_source_dir"
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done
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# This might be more cleanly moved into the main loop, by adding
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# a <dummy> source directory at the end. FIXME!
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# All the headers we create define size_t and NULL.
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for rel_source_file in unistd.h stdlib.h string.h time.h ; do
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if grep "$rel_source_file" fixproto.list >/dev/null ; then
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: # It exists, we don't need to make it
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else
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echo Adding missing $rel_source_file
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rel_source_ident=`echo $rel_source_file | tr ./ __`
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cat >tmp.h <<EOF
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/* Fake ${rel_source_file}, created by GCC.
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The functions declared in this file do not necessarily exist in
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your C library. */
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#ifndef __${rel_source_ident}
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#define __${rel_source_ident}
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#define __need_NULL
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#define __need_size_t
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#include <stddef.h>
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EOF
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# Insert special stuff for particular files here.
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case ${rel_source_file} in
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time.h)
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# If time.h doesn't exist, find out if sys/time.h does.
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if test -f $src_dir_std/sys/time.h \
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|| grep "sys/time.h" fixproto.list >/dev/null ; then
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# It does; include it and hope it has the needed declarations.
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# Some versions require sys/types.h.
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cat >>tmp.h <<EOF
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#include <sys/types.h>
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#include <sys/time.h>
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EOF
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else
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# It doesn't. Make up plausible definitions for time_t, clock_t.
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# Forward-declare struct tm. Hope nobody tries to use it. (Odds
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# are they won't.)
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cat >>tmp.h <<EOF
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typedef long time_t;
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typedef long clock_t;
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struct tm;
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EOF
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fi ;;
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esac
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cat >>tmp.h <<EOF
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#endif /* __${rel_source_ident} */
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EOF
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${FIX_HEADER} $rel_source_file tmp.h $abs_target_dir/$rel_source_file ${DEFINES} $include_path
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if test $? != 0 ; then exit 1 ; fi
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if test -f $abs_target_dir/$rel_source_file ; then
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rm tmp.h
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else
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mv tmp.h $abs_target_dir/$rel_source_file
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fi
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fi
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done
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# Remove any directories that we made that are still empty.
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rmdir $subdirs_made 2>/dev/null
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exit 0
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