Dimitry Andric
e4b498d8a0
With libc++ 20 or higher devel/ispc fails to build, with errors similar
to:
/wrkdirs/usr/ports/devel/ispc/work/ispc-1.30.0/src/util.cpp:51:11: error: '__libcpp_verbose_abort' is missing exception specification 'noexcept'
51 | void std::__libcpp_verbose_abort(char const *format, ...)
| ^
| noexcept
/usr/include/c++/v1/__verbose_abort:24:28: note: previous declaration is here
24 | __printf__, 1, 2) void __libcpp_verbose_abort(const char* __format, ...) _NOEXCEPT;
| ^
This is because ispc attemps to override __libcpp_verbose_abort(), which
is an internal libc++ function, but it misses a noexcept specification.
However, overriding __libcpp_verbose_abort() is only necessary on older
versions of macOS. Therefore, exclude the whole #if block if the
operating system is not macOS.
PR: 293163
Approved by: yuri (maintainer)
MFH: 2026Q1
21 lines
727 B
C++
21 lines
727 B
C++
--- src/util.cpp.orig 2026-02-04 04:33:16 UTC
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+++ src/util.cpp
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@@ -44,7 +44,7 @@
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#include <llvm/Support/Path.h>
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#if ISPC_LLVM_VERSION < ISPC_LLVM_21_0
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-#ifdef _LIBCPP_VERSION
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+#if defined(ISPC_HOST_IS_APPLE) && defined(_LIBCPP_VERSION)
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// Provide own definition of std::__libcpp_verbose_abort to avoid missing symbols error on macOS with old
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// system libc++.1.dylib. The symbol is there for macOS 13 Ventura and later, but not macOS 12 and earlier.
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// See #3071 for more details.
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@@ -60,7 +60,7 @@ void std::__libcpp_verbose_abort(char const *format, .
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abort();
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}
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-#endif // _LIBCPP_VERSION
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+#endif // ISPC_HOST_IS_APPLE && _LIBCPP_VERSION
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#endif // ISPC_LLVM_VERSION < ISPC_LLVM_21_0
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using namespace ispc;
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