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e7b586e7f8
C++ code compiles very slowly with cosmocc, possibly because we're using LLVM LIBCXX with GCC, and LLVM doesn't work as hard to make GCC go fast. Therefore, it should be possible, to ask cosmocc to favor Clang over GCC under the hood. On llamafile, my intention's to use this to make certain files, e.g. llama.cpp/common.cpp, go from taking 17 seconds to 5 seconds This new -mclang flag isn't ready for production yet since there's still the question of how to get Clang to generate SJLJ exception code. If you use this, then it's recommended you also pass -fno-exceptions. The tradeoff is we're adding a 121mb binary to the cosmocc distribution. There are no plans as of yet to fully migrate to Clang since GCC is very good and has always treated us well.
48 lines
2.4 KiB
C
48 lines
2.4 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 2023 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/dlopen/dlfcn.h"
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/**
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* Opens dynamic shared object using host platform libc.
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*
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* Cosmo's `dlopen()` function is a stub that always returns NULL. An
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* alternative `cosmo_dlopen()` implementation is provided, which can
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* help some users with tasks like talking to GPU and GUI libraries.
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*
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* @return null always
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*/
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void *dlopen(const char *, int) {
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return 0;
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}
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char *dlerror(void) {
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return "dlopen() isn't supported by cosmo; try using cosmo_dlopen()";
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}
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void *dlsym(void *, const char *) {
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return 0;
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}
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int dlclose(void *) {
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return -1;
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}
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int dl_iterate_phdr(int (*)(void *, size_t, void *), void *) {
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return -1;
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}
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