b1bbb41f96
similar to what c99(1) does, to prevent "c89: illegal option -- 1" messages, when clang is /usr/bin/cc. Reported by: tijl MFC after: 3 days
112 lines
3.3 KiB
C
112 lines
3.3 KiB
C
/*-
|
|
* 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++] = CC;
|
|
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);
|
|
}
|