Fix MinGW builds (#113)

* use ole32 when compiling with MINGW in Windows for UUIDs

* use winresrc.h instead of winres.h

* remove ole32 link dependency

* add mingw shell script

* add mingw support to travis-cli

* fix travis before_script

* add cmake cross compile support to cmake

* remove tobydox dependency

* use mingw from /usr instead of  /opt

* remove test from travis mingw build

* remove tets generation for linux mingw

* fix mingw cmake script

* add LIB3MF_TESTS at cmake toolchain

* reenable tests in mingw cmake

.travis.yml

@@ -11,13 +11,24 @@ matrix:
       compiler: gcc
     - os: osx
       osx_image: xcode7.2
+    - os: linux
+      compiler: x86_64-w64-mingw32-g++
+      env: BUILDMODE=cmake-mingw32
+      addons:
+        apt:
+          packages:
+            - gcc-mingw-w64-base
+            - binutils-mingw-w64-x86-64
+            - gcc-mingw-w64-x86-64
+            - gcc-mingw-w64
+            - g++-mingw-w64-x86-64
 
 before_script:
     - if [[ "$TRAVIS_OS_NAME" == "osx" ]]; then HOMEBREW_NO_AUTO_UPDATE=1 brew install ossp-uuid          ; fi
-    - sh cmake/GenerateMake.sh
+    - if [[ "$BUILDMODE" = "cmake-mingw32" ]]; then sh cmake/GenerateMinGW.sh ; else sh cmake/GenerateMake.sh   ; fi
     - cd build
 
 script:
     - cmake --build .
-    - ctest -V
+    - if ![[ "$BUILDMODE" = "cmake-mingw32" ]]; then ctest -V    ; fi
 

CMakeLists.txt

@@ -105,11 +105,13 @@ if (UNIX OR MINGW)
 	if (NOT APPLE)
 		SET_TARGET_PROPERTIES(${PROJECT_NAME}_s PROPERTIES LINK_FLAGS -s)
 	endif()
-	find_library(LIBUUID_PATH uuid)
-	if(NOT LIBUUID_PATH)
-		message(FATAL_ERROR "libuuid not found")
+	if (NOT WIN32)
+		find_library(LIBUUID_PATH uuid)
+		if(NOT LIBUUID_PATH)
+			message(FATAL_ERROR "libuuid not found")
+		endif()
+		target_link_libraries(${PROJECT_NAME}_s ${LIBUUID_PATH})
 	endif()
-	target_link_libraries(${PROJECT_NAME}_s ${LIBUUID_PATH})
 else()
 	# wd4996 masks the deprecated-warning
 	target_compile_options(${PROJECT_NAME}_s PUBLIC "$<$<CONFIG:DEBUG>:/Od;/Ob0;/Gm;/sdl;/W3;/WX;/FC;/wd4996>")

Release/VersionInfo/VersionResource.rc

@@ -1,5 +1,5 @@
 #include "VersionInfo.h"
-#include "winres.h"
+#include "winresrc.h"
 
 // IDI_ICON1               ICON                    PRODUCT_ICON
 

cmake/GenerateMinGW.sh

@@ -0,0 +1,15 @@
+#!/bin/sh
+
+basepath="$(cd "$(dirname "$0")" && pwd)"
+builddir="$basepath/../build"
+mkdir -p "$builddir"
+cd "$builddir"
+echo "SET(CMAKE_SYSTEM_NAME Windows)" > toolchain.cmake &&
+echo "SET(CMAKE_C_COMPILER x86_64-w64-mingw32-gcc)" >> toolchain.cmake &&
+echo "SET(CMAKE_CXX_COMPILER x86_64-w64-mingw32-g++)" >> toolchain.cmake &&
+echo "SET(CMAKE_RC_COMPILER x86_64-w64-mingw32-windres)" >> toolchain.cmake &&
+echo "SET(CMAKE_FIND_ROOT_PATH /usr/mingw64)" >> toolchain.cmake &&
+echo "SET(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)" >> toolchain.cmake &&
+echo "SET(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)" >> toolchain.cmake &&
+echo "SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)" >> toolchain.cmake &&
+cmake .. -DCMAKE_TOOLCHAIN_FILE=toolchain.cmake "$@"