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https://github.com/jart/cosmopolitan.git
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0de6a08988
The toolchain will now be downloaded going forward from multiple pinned URLs which have shasums. Either wget or curl must be installed. This change unblocks #1053
63 lines
2.8 KiB
C
63 lines
2.8 KiB
C
/*-*- mode:c;indent-tabs-mode:nil;c-basic-offset:2;tab-width:8;coding:utf-8 -*-│
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│ vi: set et ft=c ts=2 sts=2 sw=2 fenc=utf-8 :vi │
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╞══════════════════════════════════════════════════════════════════════════════╡
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│ Copyright 2020 Justine Alexandra Roberts Tunney │
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│ │
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│ Permission to use, copy, modify, and/or distribute this software for │
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│ any purpose with or without fee is hereby granted, provided that the │
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│ above copyright notice and this permission notice appear in all copies. │
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│ │
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│ THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL │
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│ WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED │
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│ WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE │
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│ AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL │
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│ DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR │
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│ PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER │
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│ TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR │
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│ PERFORMANCE OF THIS SOFTWARE. │
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╚─────────────────────────────────────────────────────────────────────────────*/
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#include "libc/atomic.h"
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#include "libc/calls/calls.h"
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#include "libc/cosmo.h"
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#include "libc/errno.h"
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#include "libc/limits.h"
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#include "libc/runtime/runtime.h"
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#include "libc/str/str.h"
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#ifdef __x86_64__
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#define ADDR2LINE "cosmocc/3.2/bin/x86_64-linux-musl-addr2line"
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#elif defined(__aarch64__)
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#define ADDR2LINE "cosmocc/3.2/bin/aarch64-linux-musl-addr2line"
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#endif
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static struct {
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atomic_uint once;
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char *res;
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char buf[PATH_MAX];
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} g_addr2line;
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const void GetAddr2linePathInit(void) {
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int e = errno;
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const char *path;
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if (!(path = getenv("ADDR2LINE"))) {
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path = ADDR2LINE;
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}
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char *buf = g_addr2line.buf;
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if (isexecutable(path)) {
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if (*path != '/' && getcwd(buf, PATH_MAX)) {
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strlcat(buf, "/", PATH_MAX);
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}
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strlcat(buf, path, PATH_MAX);
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}
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if (*buf) {
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g_addr2line.res = buf;
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} else {
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g_addr2line.res = commandv("addr2line", buf, PATH_MAX);
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}
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errno = e;
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}
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const char *GetAddr2linePath(void) {
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cosmo_once(&g_addr2line.once, GetAddr2linePathInit);
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return g_addr2line.res;
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}
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