1de7b4b805
Mainly focus on files that use BSD 2-Clause license, however the tool I was using misidentified many licenses so this was mostly a manual - error prone - task. The Software Package Data Exchange (SPDX) group provides a specification to make it easier for automated tools to detect and summarize well known opensource licenses. We are gradually adopting the specification, noting that the tags are considered only advisory and do not, in any way, superceed or replace the license texts. No functional change intended.
114 lines
3.4 KiB
C
114 lines
3.4 KiB
C
/*-
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* SPDX-License-Identifier: BSD-2-Clause-FreeBSD
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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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__FBSDID("$FreeBSD$");
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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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