freebsd-dev/contrib/gcc/fixproto
1999-08-26 09:30:50 +00:00

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#!/bin/sh
#
# SYNOPSIS
# fixproto TARGET-DIR SOURCE-DIR-ALL SOURCE-DIR-STD
#
# COPYRIGHT
# Copyright (C) 1993, 1994 Free Software Foundation, Inc.
# This file is part of GNU CC.
#
# GNU CC 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 2, or (at your option)
# any later version.
#
# GNU CC 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 GNU CC; see the file COPYING. If not, write to
# the Free Software Foundation, 59 Temple Place - Suite 330,
# Boston, MA 02111-1307, USA.
#
# DESCRIPTION
# Adjunct script for GNU CC to populate a directory with ANSI,
# Posix.1, and C++ compatible header files.
#
# Each file found under SOURCE-DIR-ALL is analyzed and "fixed."
# Only standard ANSI/POSIX files found under SOURCE-DIR-STD
# are analyzed and "fixed."
# The SOURCE-DIRs are searched in order; a file found
# under multiple SOURCE-DIRs is only handled for the first one.
#
# STRATEGY
# Each include file is fed through cpp, and the scan-decls program
# parses it, and emits any found function declarations.
# The fix-header program analyzes the scan-decls output,
# together with the original include file, and writes a "fixed"
# include file, if needed.
#
# The comment at the beginning of fix-header.c lists specifically
# what kind of changes are made.
#
# NOTE
# Some file space will be wasted, because the original header
# files are copied. An earlier version just included the original
# by "reference", using GNU cpp's #include_next mechanism.
# This is currently not done, partly because #include_next is
# fragile (susceptible to version incompatibilities, and depends
# and GCC-specific features), and partly for performance reasons.
#
# AUTHORS
# Ron Guilmette (rfg@netcom.com) (original idea and code)
# Per Bothner (bothner@cygnus.com) (major re-write)
progname=$0
progname=`basename $progname`
original_dir=`pwd`
FIX_HEADER=${FIX_HEADER-$original_dir/fix-header}
DEFINES="-D__STDC__=0 -D__cplusplus ${FIXPROTO_DEFINES}"
if [ `echo $1 | wc -w` = 0 ] ; then
echo $progname\: usage\: $progname target-dir \[ source-dir \.\.\. \]
exit 1
fi
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"
rel_target_dir=$1
# All files in $src_dir_all (normally same as $rel_target_dir) are
# processed.
src_dir_all=$2
# In $src_dir_std (normally same as /usr/include), only the
# "standard" ANSI/POSIX files listed in $std_files are processed.
src_dir_std=$3
if [ `expr $rel_target_dir : '\(.\)'` != '/' ] ; then
abs_target_dir=$original_dir/$rel_target_dir
else
abs_target_dir=$rel_target_dir
fi
# Determine whether this system has symbolic links.
if ln -s X $rel_target_dir/ShouldNotExist 2>/dev/null; then
rm -f $rel_target_dir/ShouldNotExist
LINKS=true
elif ln -s X /tmp/ShouldNotExist 2>/dev/null; then
rm -f /tmp/ShouldNotExist
LINKS=true
else
LINKS=false
fi
if [ \! -d $abs_target_dir ] ; then
echo $progname\: creating directory $rel_target_dir
mkdir $abs_target_dir
fi
echo $progname\: populating \`$rel_target_dir\'
include_path=""
if [ `echo $* | wc -w` != 0 ] ; then
for rel_source_dir in $src_dir_all $src_dir_std; do
if [ `expr $rel_source_dir : '\(.\)'` != '/' ] ; then
abs_source_dir=$original_dir/$rel_source_dir
else
abs_source_dir=$rel_source_dir
fi
include_path="$include_path -I$abs_source_dir"
done
fi
required_stdlib_h="abort abs atexit atof atoi atol bsearch calloc exit free getenv labs malloc putenv qsort rand realloc srand strtod strtol strtoul system"
# "div ldiv", - ignored because these depend on div_t, ldiv_t
# ignore these: "mblen mbstowcs mbstowc wcstombs wctomb"
# Left out getgroups, because SunOS4 has incompatible BSD and SVR4 versions.
# Should perhaps also add NULL
required_unistd_h="_exit access alarm chdir chown close ctermid cuserid dup dup2 execl execle execlp execv execve execvp fork fpathconf getcwd getegid geteuid getgid getlogin getopt getpgrp getpid getppid getuid isatty link lseek pathconf pause pipe read rmdir setgid setpgid setsid setuid sleep sysconf tcgetpgrp tcsetpgrp ttyname unlink write"
done_dirs=""
subdirs_made=""
echo "" >fixproto.list
for code in ALL STD ; do
subdirs="."
case $code in
ALL)
rel_source_dir=$src_dir_all
dirs="."
levels=2
while $LINKS && test -n "$dirs" -a $levels -gt 0
do
levels=`expr $levels - 1`
newdirs=
for d in $dirs ; do
# Find all directories under $d, relative to $d, excluding $d itself.
# Assume directory names ending in CC or containing ++ are
# for C++, so skip those.
subdirs="$subdirs "`cd $rel_source_dir/$d; find . -type d -print | \
sed -e '/^\.$/d' -e "s|^\./|${d}/|" -e 's|^\./||' \
-e '/CC$/d' -e '/[+][+]/d'`
links=
links=`cd $rel_source_dir; find $d/. -type l -print | \
sed -e "s|$d/./|$d/|" -e 's|^\./||'`
for link in $links --dummy-- ; do
test -d $rel_source_dir/$link/. && newdirs="$newdirs $link"
done
done
dirs="$newdirs"
subdirs="$subdirs $newdirs"
done
;;
STD)
rel_source_dir=$src_dir_std
;;
esac
if [ `expr $rel_source_dir : '\(.\)'` != '/' ] ; then
abs_source_dir=$original_dir/$rel_source_dir
else
abs_source_dir=$rel_source_dir
fi
if [ \! -d $abs_source_dir ] ; then
echo $progname\: warning\: no such directory\: \`$rel_source_dir\'
continue
fi
for rel_source_subdir in $subdirs; do
abs_target_subdir=${abs_target_dir}/${rel_source_subdir}
if [ \! -d $abs_target_subdir ] ; then
if mkdir $abs_target_subdir ; then
subdirs_made="$abs_target_subdir $subdirs_made"
fi
fi
# Append "/"; remove initial "./". Hence "." -> "" and "sys" -> "sys/".
rel_source_prefix=`echo $rel_source_subdir | sed -e 's|$|/|' -e 's|^./||'`
case $code in
ALL)
# The 'sed' is in case the *.h matches nothing, which yields "*.h"
# which would then get re-globbed in the current directory. Sigh.
rel_source_files=`cd ${abs_source_dir}/${rel_source_subdir}; echo *.h | sed -e 's|[*].h|NONE|'`
;;
STD)
files_to_check="$std_files"
rel_source_files=""
# Also process files #included by the $std_files.
while [ -n "${files_to_check}" ]
do
new_files_to_check=""
for file in $files_to_check ; do
xxfile=`echo $file | sed -e 's|/\([^/\.][^/\.]*\)/\.\./|/|'`
# Create the dir where this file will go when fixed.
xxdir=`echo ./$file | sed -e 's|/[^/]*$||'`
if [ \! -d $abs_target_subdir/$xxdir ] ; then
if mkdir $abs_target_subdir/$xxdir ; then
subdirs_made="$abs_target_subdir/$xxdir $subdirs_made"
fi
fi
# Just in case we have edited out a symbolic link
if [ -f $src_dir_std/$file -a -f $src_dir_std/$xxfile ] ; then
file=$xxfile
fi
case " $rel_source_files " in
*" ${file} "*)
# Already seen $file; nothing to do
;;
*)
if test -f $src_dir_std/$file ; then
rel_dir=`echo $file | sed -n -e 's|^\(.*/\)[^/]*$|\1|p'`
# For #include "foo.h", that might be either "foo.h"
# or "${rel_dir}foo.h (or something bogus).
new_files_to_check="$new_files_to_check "`sed -n \
-e 's@ @ @g' \
-e 's@^ *# *include *<\([^>]*\)>.*$@\1@p' -e \
's@^ *# *include *\"\([^\"]*\)\".*$@\1 '$rel_dir'\1@p'\
<$src_dir_std/$file`
rel_source_files="$rel_source_files $file"
fi
;;
esac
done
files_to_check="$new_files_to_check"
done
rel_source_files="$rel_source_files"
;;
esac
for filename in $rel_source_files ; do
rel_source_file=${rel_source_prefix}${filename}
abs_source_file=$abs_source_dir/$rel_source_file
abs_target_file=$abs_target_dir/$rel_source_file
if test "$filename" = 'NONE' ; then
echo "(No *.h files in $abs_source_dir/$rel_source_subdir)"
# If target file exists, check if was written while processing one
# of the earlier source directories; if so ignore it.
elif test -f $abs_target_file -a -n "$done_dirs" \
&& grep "$rel_source_file" fixproto.list >/dev/null
then true
else
$FIX_HEADER $rel_source_file $abs_source_file $abs_target_file ${DEFINES} $include_path
echo "${rel_source_file}" >>fixproto.list
fi
done
done
done_dirs="$done_dir $rel_source_dir"
done
# This might be more cleanly moved into the main loop, by adding
# a <dummy> source directory at the end. FIXME!
for rel_source_file in unistd.h stdlib.h
do
if grep "$rel_source_file" fixproto.list >/dev/null
then true
else
echo Adding missing $rel_source_file
rel_source_ident=`echo $rel_source_file | tr ./ __`
required_list=`eval echo '${required_'${rel_source_ident}'-}'`
cat >tmp.h <<EOF
#ifndef __${rel_source_ident}
#define __${rel_source_ident}
EOF
if test $rel_source_file = stdlib.h
then
# Make sure it contains a definition of size_t.
cat >>tmp.h <<EOF
#define __need_size_t
#include <stddef.h>
EOF
fi
cat >>tmp.h <<EOF
#endif /* __${rel_source_ident} */
EOF
${FIX_HEADER} $rel_source_file tmp.h $abs_target_dir/$rel_source_file ${DEFINES} $include_path
rm tmp.h
fi
done
# Remove any directories that we made that are still empty.
rmdir $subdirs_made 2>/dev/null
exit 0