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1.1 root 1: #!/bin/sh
2: #
3: # NAME
4: # populate
5: #
6: # SYNOPSIS
7: # populate target-dir [ source-dir ... ]
8: #
9: # DESCRIPTION
10: # Adjunct script for GNU C++ to populate a directory with C++
11: # compatible header files.
12: #
13: # For each header file (whose name ends in .h) which resides in one
14: # of the indicated source-dirs, create a corresponding file in the
15: # target-dir (with the same name) which looks like:
16: #
17: # #ifndef __IN_C_REGION__
18: # #define __IN_C_REGION__
19: # extern "C" {
20: # #include_next <header.h>
21: # }
22: # #undef __IN_C_REGION__
23: # #else
24: # #include_next <header.h>
25: # #endif
26: #
27: # Where "header.h" is the name of the original header file in the
28: # source-dir.
29: #
30: # If a file with the appropriate name already exists in the target
31: # directory, it will not be overwritten.
32: #
33: # NOTES
34: # This script assumes that your native header files are already
35: # at least compliant with ANSI C, and that all functions declared
36: # therein are properly prototyped (as they must be for C++).
37: #
38: # Currently, this condition is not fully satisfied by many (if any)
39: # systems. On System V Release 4, most of the system header files
40: # do seem to be properly prototyped though, and OSF/1 also has
41: # prototyped header files, but some of the argument type specifica-
42: # tions for some function prototypes in some OSF/1 header files may
43: # lack `const' qualifiers in certain places where they ought to appear.
1.1.1.2 ! root 44: # (This is due to the fact that OSF/1 conforms to POSIX-1988 rather
1.1 root 45: # than to the newer POSIX-1990 standard.)
46: #
47: # If your system's native include files are not properly prototyped,
48: # that's OK. This script will still do it's normal job (in the normal
49: # way) but the resulting (indirect) header files will not be very useful
50: # for g++ programming unless (and until) somebody puts in all of the
51: # prototypes for all of the functions which are declared in these files.
52: #
53: # Note that in some cases, a header file with a given name may exist
54: # in two or more of the given source directories. That's perfectly
55: # alright. Only one (corresponding) header file will be placed into
56: # the target directory for each such group of kindred source files.
57: #
58: # This script should probably be invoked from the GCC Makefile, via:
59: #
60: # populate $(libdir)/g++-include $(libsubdir)/include /usr/include
61: #
62: # That would insure the creation of a C++ compatible set of headers
63: # (in the sepcial g++-include directory) corresponding to all of the
64: # normal GCC header files and all of the native system's header files.
65: #
66: # AUTHOR
67: # Ron Guilmette ([email protected])
68: #
69: # COPYRIGHT
70: # This file is part of GNU CC.
71: #
72: # GNU CC is free software; you can redistribute it and/or modify
73: # it under the terms of the GNU General Public License as published by
74: # the Free Software Foundation; either version 2, or (at your option)
75: # any later version.
76: #
77: # GNU CC is distributed in the hope that it will be useful,
78: # but WITHOUT ANY WARRANTY; without even the implied warranty of
79: # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
80: # GNU General Public License for more details.
81: #
82: # You should have received a copy of the GNU General Public License
83: # along with GNU CC; see the file COPYING. If not, write to
84: # the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
85:
86: progname=$0
87: progname=`basename $progname`
88: original_dir=`pwd`
89: if [ `echo $1 | wc -w` = 0 ] ; then
90: echo $progname\: usage\: $progname target-dir \[ source-dir \.\.\. \]
91: exit 1
92: fi
93: rel_target_dir=$1
94: shift
95:
96: if [ `expr $rel_target_dir : '\(.\)'` != '/' ] ; then
97: abs_target_dir=$original_dir/$rel_target_dir
98: else
99: abs_target_dir=$rel_target_dir
100: fi
101:
102: if [ \! -d $abs_target_dir ] ; then
103: echo $progname\: creating directory $rel_target_dir
104: mkdir $abs_target_dir
105: fi
106:
107: echo $progname\: populating \`$rel_target_dir\'
108:
109: if [ `echo $* | wc -w` != 0 ] ; then
110: for rel_source_dir in $*; do
111: if [ `expr $rel_source_dir : '\(.\)'` != '/' ] ; then
112: abs_source_dir=$original_dir/$rel_source_dir
113: else
114: abs_source_dir=$rel_source_dir
115: fi
116: echo $progname\: input dir\: \`$rel_source_dir\'
117: done
118: fi
119:
120: tmp_file=/tmp/$progname.$$
121: rm -f $tmp_file
122: echo '#ifndef __IN_C_REGION__' > $tmp_file
123: echo '#define __IN_C_REGION__' >> $tmp_file
124: echo 'extern "C" {' >> $tmp_file
125: echo '#include_next <=>' >> $tmp_file
126: echo '}' >> $tmp_file
127: echo '#undef __IN_C_REGION__' >> $tmp_file
128: echo '#else' >> $tmp_file
129: echo '#include_next <=>' >> $tmp_file
130: echo '#endif' >> $tmp_file
131:
132: if [ `echo $* | wc -w` != 0 ] ; then
133: for rel_source_dir in $*; do
134: if [ `expr $rel_source_dir : '\(.\)'` != '/' ] ; then
135: abs_source_dir=$original_dir/$rel_source_dir
136: else
137: abs_source_dir=$rel_source_dir
138: fi
139: if [ \! -d $abs_source_dir ] ; then
140: echo $progname\: warning\: no such directory\: \`$rel_source_dir\'
141: continue
142: fi
143: cd $abs_source_dir
144: rel_source_subdirs=`find . -type d -print | sed 's%^\./%%' | sed 's/\.//'`
145: if [ `echo $rel_source_subdirs | wc -w` != 0 ] ; then
146: for rel_source_subdir in $rel_source_subdirs; do
147: abs_target_subdir=$abs_target_dir/$rel_source_subdir
148: if [ \! -d $abs_target_subdir ] ; then
149: mkdir $abs_target_subdir
150: fi
151: done
152: fi
153: rel_source_files=`find . -type f -name \*.h -print | sed 's%^\./%%'`
154: if [ `echo $rel_source_files | wc -w` != 0 ] ; then
155: for rel_source_file in $rel_source_files; do
156: abs_source_file=$abs_source_dir/$rel_source_file
157: abs_target_file=$abs_target_dir/$rel_source_file
158: if [ \! -f $abs_target_file ] ; then
159: sed 's%=%'"$rel_source_file"'%' $tmp_file > $abs_target_file
160: fi
161: done
162: fi
163: done
164: fi
165: rm -f $tmp_file
166: exit 0
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