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Define _LIBCPP_DISABLE_AVAILABILITY for MacOSX (#695)

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Add compatibility macro for older MacOSX deployment targets
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Rob Loach 2026-04-28 22:12:22 -04:00 committed by GitHub
parent 0b75a8be7d
commit 56506bc111
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1 changed files with 10 additions and 0 deletions
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10
include/chaiscript/chaiscript_defines.hpp
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@ -7,6 +7,16 @@
#ifndef CHAISCRIPT_DEFINES_HPP_
#define CHAISCRIPT_DEFINES_HPP_
// MacOSX Fix: std::get/std::get_if/std::visit for std::variant are annotated
// __attribute__((availability(macos,strict,introduced=10.14))) in Apple libc++.
// Defining this macro before any libc++ header strips those annotations so
// ChaiScript can be built against older MacOSX deployment targets.
#if defined(__APPLE__) && defined(__clang__)
#ifndef _LIBCPP_DISABLE_AVAILABILITY
#define _LIBCPP_DISABLE_AVAILABILITY
#endif
#endif
#ifdef _MSC_VER
#define CHAISCRIPT_STRINGIZE(x) "" #x
#define CHAISCRIPT_STRINGIZE_EXPANDED(x) CHAISCRIPT_STRINGIZE(x)