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