[PATCH] D38380: [libunwind] Add CMake support for building for MinGW

[Martin Storsjö via Phabricator via cfe-commits]

mstorsjo created this revision.
Herald added a subscriber: mgorny.

This is the cmake specific parts of https://reviews.llvm.org/D33601 (by Martell Malone) split out into a separate patch, to ease getting this part reviewed indendent of the rest of that patch.


https://reviews.llvm.org/D38380

Files:
  cmake/config-ix.cmake


Index: cmake/config-ix.cmake
===================================================================
--- cmake/config-ix.cmake
+++ cmake/config-ix.cmake
@@ -29,6 +29,19 @@
   elseif (LIBUNWIND_HAS_GCC_S_LIB)
     list(APPEND CMAKE_REQUIRED_LIBRARIES gcc_s)
   endif ()
+  if (MINGW)
+    # Mingw64 requires quite a few "C" runtime libraries in order for basic
+    # programs to link successfully with -nodefaultlibs.
+    if (LIBUNWIND_USE_COMPILER_RT)
+      set(MINGW_RUNTIME ${LIBUNWIND_BUILTINS_LIBRARY})
+    else ()
+      set(MINGW_RUNTIME gcc_s gcc)
+    endif()
+    set(MINGW_LIBRARIES mingw32 ${MINGW_RUNTIME} moldname mingwex msvcrt advapi32
+                        shell32 user32 kernel32 mingw32 ${MINGW_RUNTIME}
+                        moldname mingwex msvcrt)
+    list(APPEND CMAKE_REQUIRED_LIBRARIES ${MINGW_LIBRARIES})
+  endif()
   if (CMAKE_C_FLAGS MATCHES -fsanitize OR CMAKE_CXX_FLAGS MATCHES -fsanitize)
     set(CMAKE_REQUIRED_FLAGS "${CMAKE_REQUIRED_FLAGS} -fno-sanitize=all")
   endif ()


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