commit 7fbe80dfd88524a8c32140eb308d617e9ba9eb30
author Martin Storsjo <martin@martin.st> Mon Oct 02 20:46:37 2017 +0000
committer Copybara-Service <copybara-worker@google.com> Fri Aug 28 11:03:44 2020 -0700
tree ece67054e55aa59dbbc4f6812d2b5b2a5cf158b5
parent b6774a8b9fde974a3284920ab74356ca4c63b5b5

Add CMake support for building for MinGW

This section is similar to what already exists in libcxx and libcxxabi.

Differential Revision: https://reviews.llvm.org/D38380

llvm-svn: 314716
GitOrigin-RevId: 3a213316e9eb38a1dfea1e7d964f62aad4e0098a

cmake/config-ix.cmake

diff --git a/cmake/config-ix.cmake b/cmake/config-ix.cmake
index 40a5dd1..e2041af 100644
--- a/cmake/config-ix.cmake
+++ b/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 ()