#!/bin/sh # # NAME # populate # # SYNOPSIS # populate target-dir [ source-dir ... ] # # DESCRIPTION # Adjunct script for GNU C++ to populate a directory with C++ # compatible header files. # # For each header file (whose name ends in .h) which resides in one # of the indicated source-dirs, create a corresponding file in the # target-dir (with the same name) which looks like: # # #ifndef __IN_C_REGION__ # #define __IN_C_REGION__ # extern "C" { # #include_next <header.h> # } # #undef __IN_C_REGION__ # #else # #include_next <header.h> # #endif # # Where "header.h" is the name of the original header file in the # source-dir. # # If a file with the appropriate name already exists in the target # directory, it will not be overwritten. # # NOTES # This script assumes that your native header files are already # at least compliant with ANSI C, and that all functions declared # therein are properly prototyped (as they must be for C++). # # Currently, this condition is not fully satisfied by many (if any) # systems. On System V Release 4, most of the system header files # do seem to be properly prototyped though, and OSF/1 also has # prototyped header files, but some of the argument type specifica- # tions for some function prototypes in some OSF/1 header files may # lack `const' qualifiers in certain places where they ought to appear. # (This is due to the fact that OSF/1 conformat to POSIX-1988 rather # than to the newer POSIX-1990 standard.) # # If your system's native include files are not properly prototyped, # that's OK. This script will still do it's normal job (in the normal # way) but the resulting (indirect) header files will not be very useful # for g++ programming unless (and until) somebody puts in all of the # prototypes for all of the functions which are declared in these files. # # Note that in some cases, a header file with a given name may exist # in two or more of the given source directories. That's perfectly # alright. Only one (corresponding) header file will be placed into # the target directory for each such group of kindred source files. # # This script should probably be invoked from the GCC Makefile, via: # # populate $(libdir)/g++-include $(libsubdir)/include /usr/include # # That would insure the creation of a C++ compatible set of headers # (in the sepcial g++-include directory) corresponding to all of the # normal GCC header files and all of the native system's header files. # # AUTHOR # Ron Guilmette (rfg@ncd.com) # # COPYRIGHT # 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, 675 Mass Ave, Cambridge, MA 02139, USA. progname=$0 progname=`basename $progname` original_dir=`pwd` if [ `echo $1 | wc -w` = 0 ] ; then echo $progname\: usage\: $progname target-dir \[ source-dir \.\.\. \] exit 1 fi rel_target_dir=$1 shift if [ `expr $rel_target_dir : '\(.\)'` != '/' ] ; then abs_target_dir=$original_dir/$rel_target_dir else abs_target_dir=$rel_target_dir 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\' if [ `echo $* | wc -w` != 0 ] ; then for rel_source_dir in $*; do if [ `expr $rel_source_dir : '\(.\)'` != '/' ] ; then abs_source_dir=$original_dir/$rel_source_dir else abs_source_dir=$rel_source_dir fi echo $progname\: input dir\: \`$rel_source_dir\' done fi tmp_file=/tmp/$progname.$$ rm -f $tmp_file echo '#ifndef __IN_C_REGION__' > $tmp_file echo '#define __IN_C_REGION__' >> $tmp_file echo 'extern "C" {' >> $tmp_file echo '#include_next <=>' >> $tmp_file echo '}' >> $tmp_file echo '#undef __IN_C_REGION__' >> $tmp_file echo '#else' >> $tmp_file echo '#include_next <=>' >> $tmp_file echo '#endif' >> $tmp_file if [ `echo $* | wc -w` != 0 ] ; then for rel_source_dir in $*; do 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 cd $abs_source_dir rel_source_subdirs=`find . -type d -print | sed 's%^\./%%' | sed 's/\.//'` if [ `echo $rel_source_subdirs | wc -w` != 0 ] ; then for rel_source_subdir in $rel_source_subdirs; do abs_target_subdir=$abs_target_dir/$rel_source_subdir if [ \! -d $abs_target_subdir ] ; then mkdir $abs_target_subdir fi done fi rel_source_files=`find . -type f -name \*.h -print | sed 's%^\./%%'` if [ `echo $rel_source_files | wc -w` != 0 ] ; then for rel_source_file in $rel_source_files; do abs_source_file=$abs_source_dir/$rel_source_file abs_target_file=$abs_target_dir/$rel_source_file if [ \! -f $abs_target_file ] ; then sed 's%=%'"$rel_source_file"'%' $tmp_file > $abs_target_file fi done fi done fi rm -f $tmp_file exit 0