Buildsystem: Add support for compiling with MinGW on Windows

Tested with:
- Windows 8 x64
- MySQL 5.5.30 win32
- OpenSSL 1.0.1c (32 bits)
- No PCH
- MinGW with GCC 4.7.0

TODO:
- Fix compile/link with PCH enabled
- Fix compile with WheatyExceptonionReport enabled (ignored for now)
- Fix compile of .rc files (ignored for now)
- Test with more platforms

1 files changed, 27 insertions, 0 deletions

diff --git a/cmake/compiler/mingw/settings.cmake b/cmake/compiler/mingw/settings.cmake
new file mode 100644
index 00000000000..68156bd0b6b
--- /dev/null
+++ b/cmake/compiler/mingw/settings.cmake
@@ -0,0 +1,27 @@
+# set up output paths for executable binaries (.exe-files, and .dll-files on DLL-capable platforms)
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_BINARY_DIR}/bin)
+
+# Set build-directive (used in core to tell which buildtype we used)
+add_definitions(-D_BUILD_DIRECTIVE=\\"${CMAKE_BUILD_TYPE}\\")
+
+if(PLATFORM EQUAL 32)
+  # Required on 32-bit systems to enable SSE2 (standard on x64)
+  set(SSE_FLAGS "-msse2 -mfpmath=sse")
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${SSE_FLAGS}")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${SSE_FLAGS}")
+endif()
+add_definitions(-DHAVE_SSE2 -D__SSE2__)
+message(STATUS "GCC: SFMT enabled, SSE2 flags forced")
+
+if( WITH_WARNINGS )
+  set(WARNING_FLAGS "-W -Wall -Wextra -Winit-self -Winvalid-pch -Wfatal-errors")
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} ${WARNING_FLAGS}")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${WARNING_FLAGS} -Woverloaded-virtual")
+  message(STATUS "GCC: All warnings enabled")
+endif()
+
+if( WITH_COREDEBUG )
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -g3")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g3")
+  message(STATUS "GCC: Debug-flags set (-g3)")
+endif()