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Add LLVM libcxxabi (#1063)
* third_party: Add libcxxabi Added libcxxabi from LLVM 17.0.6 The library implements the Itanium C++ exception handling ABI. * third_party/libcxxabi: Enable __cxa_thread_atexit Enable `__cxa_thread_atexit` from libcxxabi. `__cxa_thread_atexit_impl` is still implemented by the cosmo libc. The original `__cxa_thread_atexit` has been removed. * third_party/libcxx: Build with exceptions Build libcxx with exceptions enabled. - Removed `_LIBCPP_NO_EXCEPTIONS` from `__config`. - Switched the exception implementation to `libcxxabi`. These two files are taken from the same `libcxx` version as mentioned in `README.cosmo`. - Removed `new_handler_fallback` in favor of `libcxxabi` implementation. - Enable `-fexceptions` and `-frtti` for `libcxx`. - Removed `THIRD_PARTY_LIBCXX` dependency from `libcxxabi` and `libunwind`. These libraries do not use any runtime `libcxx` functions, just headers. * libc: Remove remaining redundant cxa functions - `__cxa_pure_virtual` in `libcxxabi` is also a stub similar to the existing one. - `__cxa_guard_*` from `libcxxabi` is used instead of the ones from Android. Now there should be no more duplicate implementations. `__cxa_thread_atexit_impl`, `__cxa_atexit`, and related supporting functions, are still left to other libraries as in `libcxxabi`. `libcxxabi` is also now added to `cosmopolitan.a` to make up for the removed functions. Affected in-tree libraries (`third_party/double-conversion`) have been updated.
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53 changed files with 14606 additions and 372 deletions
6
Makefile
6
Makefile
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@ -249,7 +249,6 @@ include libc/calls/BUILD.mk #─┐
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include libc/irq/BUILD.mk # ├──SYSTEMS RUNTIME
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include third_party/nsync/BUILD.mk # │ You can issue system calls
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include libc/runtime/BUILD.mk # │
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include third_party/double-conversion/BUILD.mk # │
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include libc/crt/BUILD.mk # │
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include third_party/dlmalloc/BUILD.mk #─┘
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include libc/mem/BUILD.mk #─┐
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@ -284,7 +283,10 @@ include third_party/stb/BUILD.mk # │
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include third_party/mbedtls/BUILD.mk # │
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include third_party/ncurses/BUILD.mk # │
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include third_party/readline/BUILD.mk # │
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include third_party/libunwind/BUILD.mk # |
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include third_party/libcxxabi/BUILD.mk # |
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include third_party/libcxx/BUILD.mk # │
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include third_party/double-conversion/BUILD.mk # │
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include third_party/pcre/BUILD.mk # │
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include third_party/less/BUILD.mk # │
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include net/https/BUILD.mk # │
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@ -328,7 +330,6 @@ include third_party/python/BUILD.mk
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include tool/build/BUILD.mk
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include tool/curl/BUILD.mk
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include third_party/qemu/BUILD.mk
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include third_party/libunwind/BUILD.mk
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include examples/BUILD.mk
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include examples/pyapp/BUILD.mk
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include examples/pylife/BUILD.mk
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@ -441,6 +442,7 @@ COSMOPOLITAN_OBJECTS = \
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LIBC_TIME \
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THIRD_PARTY_MUSL \
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THIRD_PARTY_ZLIB_GZ \
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THIRD_PARTY_LIBCXXABI \
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THIRD_PARTY_LIBUNWIND \
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LIBC_STDIO \
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THIRD_PARTY_GDTOA \
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