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Handle libunwind_xdac partial C11 support #42997

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Merged
sdmaclea merged 1 commit into from
Oct 5, 2020
Merged

Handle libunwind_xdac partial C11 support #42997

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9 changes: 9 additions & 0 deletions src/coreclr/src/pal/src/libunwind/config.h.in
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Original file line number Diff line number Diff line change
Expand Up @@ -17,4 +17,13 @@

#cmakedefine HAVE_ATOMIC_OPS_H

#cmakedefine HAVE_STDALIGN_H
#cmakedefine HAVE_STDALIGN_ALIGNAS

#if defined(_MSC_VER) && defined(HAVE_STDALIGN_H) && !defined(HAVE_STDALIGN_ALIGNAS)
// alignment is a performance optimization for the cross compile libunwind
// Simply ignore it if it is not supported by the compiler
#define alignas(x)
#endif

#endif
10 changes: 10 additions & 0 deletions src/coreclr/src/pal/src/libunwind/configure.cmake
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Expand Up @@ -59,6 +59,16 @@ int main(int argc, char **argv)
return 0;
}" HAVE__BUILTIN_UNREACHABLE)

check_c_source_compiles("
#include <stdalign.h>

int main(void)
{
alignas(128) char result = 0;

return result;
}" HAVE_STDALIGN_ALIGNAS)

configure_file(${CMAKE_CURRENT_SOURCE_DIR}/config.h.in ${CMAKE_CURRENT_BINARY_DIR}/include/config.h)
add_definitions(-DHAVE_CONFIG_H=1)

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