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Make fatcosmocc good enough to build Lua 5.4.6

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make all test CC=fatcosmocc AR='fatcosmoar rcu'

This change introduces a program named mktemper.com which provides more
reliable and secure temporary file name generation for scripts. It also
makes our ar.com program more permissive in what commands it'll accept.
The cosmocc command is improved by this change too.
This commit is contained in:
Justine Tunney 2023-08-12 16:44:04 -07:00
parent 566cb5963f
commit 399d14aadf
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17 changed files with 612 additions and 629 deletions
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tool/build/mktemper.c Normal file
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/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
│vi: set net ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi│
╞══════════════════════════════════════════════════════════════════════════════╡
│ Copyright 2023 Justine Alexandra Roberts Tunney │
│ │
│ Permission to use, copy, modify, and/or distribute this software for │
│ any purpose with or without fee is hereby granted, provided that the │
│ above copyright notice and this permission notice appear in all copies. │
│ │
│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
│ PERFORMANCE OF THIS SOFTWARE. │
╚─────────────────────────────────────────────────────────────────────────────*/
#include "libc/calls/calls.h"
#include "libc/dce.h"
#include "libc/runtime/runtime.h"
#include "libc/stdio/rand.h"
#include "libc/stdio/stdio.h"
#include "libc/str/str.h"
#include "libc/sysv/consts/o.h"
/**
* @fileoverview stronger mktemp for shell scripts, e.g.
*
* o//tool/build/mktemper.com ${TMPDIR:-/tmp}/fooXXXXXXXXXXXXX.o
*
* Is a good way to name an intermediate object file.
*/
static wontreturn void Die(const char *thing, const char *reason) {
tinyprint(2, thing, ": ", reason, "\n", NULL);
exit(1);
}
static wontreturn void DieSys(const char *thing) {
perror(thing);
exit(1);
}
int main(int argc, char *argv[]) {
const char *prog = program_invocation_short_name;
if (argc == 1) Die(prog, "missing argument");
if (argc != 2) Die(prog, "too many arguments");
char *template = argv[1];
char *substring = strstr(template, "XXXXXXXXXXXXX");
if (!substring) Die(prog, "template missing XXXXXXXXXXXXX substring");
uint64_t w;
if (getrandom(&w, 8, 0) != 8) DieSys("getrandom");
for (int i = 0; i < 13; ++i) {
substring[i] = "0123456789abcdefghijklmnopqrstuvwxyz"[w % 36];
w /= 36;
}
int fd;
if ((fd = open(template,
O_RDWR | O_CREAT | O_EXCL | (IsWindows() ? 0x00410000 : 0),
0600)) == -1) {
DieSys(template);
}
close(fd);
tinyprint(1, template, "\n", NULL);
}