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/*-
* This is the Posix.2 mandated C compiler. Basically, a hook to the
* cc(1) command.
*
* Copyright (c) 2001 by Jens Schweikhardt
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");
#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#define CC "/usr/bin/cc" /* The big kahuna doing the actual work. */
#define N_ARGS_PREPENDED (sizeof(args_prepended) / sizeof(args_prepended[0]))
/*
* We do not add -D_POSIX_SOURCE here because any POSIX source is supposed to
* define it before inclusion of POSIX headers. This has the additional
* benefit of making c89 -D_ANSI_SOURCE do the right thing (or any other
* -D_FOO_SOURCE feature test macro we support.)
*/
static const char *args_prepended[] = {
"-std=iso9899:199409",
"-pedantic"
};
static void usage(void);
/*
* Prepend the strings from args_prepended[] to the arg list; parse options,
* accepting only the POSIX c89 mandated options. Then exec cc to do the
* actual work.
*/
int
main(int argc, char **argv)
{
int Argc, i;
size_t j;
union {
const char **a;
char * const *b;
} Argv;
Argc = 0;
Argv.a = malloc((argc + 1 + N_ARGS_PREPENDED) * sizeof *Argv.a);
if (Argv.a == NULL)
err(1, "malloc");
Argv.a[Argc++] = argv[0];
for (j = 0; j < N_ARGS_PREPENDED; ++j)
Argv.a[Argc++] = args_prepended[j];
while ((i = getopt(argc, argv, "cD:EgI:l:L:o:OsU:")) != -1) {
if (i == '?')
usage();
if (i == 'l') {
if (argv[optind - 1][0] == '-') /* -llib */
optind -= 1;
else /* -l lib */
optind -= 2;
break; /* -llib or -l lib starts the operands. */
}
}
if (argc == optind) {
warnx("missing operand");
usage();
}
/* Append argv[1..] at the end of Argv[].a. */
for (i = 1; i <= argc; ++i)
Argv.a[Argc++] = argv[i];
(void)execv(CC, Argv.b);
err(1, "execv(" CC ")");
}
static void
usage(void)
{
fprintf(stderr,
"usage: c89 [-cEgOs] [-D name[=value]] ... [-I directory] ... [-L directory] ...\n"
" [-o outfile] [-U name] ... operand ...\n"
"\n"
" where operand is one or more of file.c, file.o, file.a\n"
" or -llibrary\n");
exit(1);
}
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