Fix MinGW build

Author: Pospelove

CMakeLists.txt

@@ -28,6 +28,10 @@ set(SLikeNet_VERSION_PATCH "0")
 set(SLikeNet_VERSION ${SLikeNet_VERSION_MAJOR}.${SLikeNet_VERSION_MINOR}.${SLikeNet_VERSION_PATCH})
 set(SLikeNet_API_VERSION ${SLikeNet_VERSION_MAJOR}.${SLikeNet_VERSION_MINOR})
 
+if(MINGW)
+	add_compile_definitions(_RAKNET_SUPPORT_TwoWayAuthentication=0)
+endif()
+
 # explicitly enable @rpath in the install name for any shared library being built (for cmake >=2.8.12 and <3.0 - it's enabled by default for >= 3.0)
 # note that for cmake < 2.8.12 we do not use rpath but rather keep the RakNet 4.082 behavior
 if( CMAKE_VERSION VERSION_LESS 3.0 )

CmakeIncludes/CmakeMacros.txt

@@ -78,7 +78,7 @@ ENDMACRO(ADDCPPDEF)
 
 MACRO(FIXCOMPILEOPTIONS)#Fix added compile options that may cause problems, also fix warnings
 
-	IF(NOT ${CMAKE_GENERATOR} STREQUAL "MSYS Makefiles")
+	IF(NOT ${CMAKE_GENERATOR} MATCHES "MSYS Makefiles|MinGW Makefiles")
 		IF(WIN32 AND NOT UNIX)
 			STRING(REGEX REPLACE "/Z[0-9a-zA-Z]+" ""  CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS}")
 			STRING(REGEX REPLACE "/Z[0-9a-zA-Z]+" ""  CMAKE_C_FLAGS "${CMAKE_C_FLAGS}")
@@ -93,7 +93,7 @@ MACRO(FIXCOMPILEOPTIONS)#Fix added compile options that may cause problems, also
 
 	SET(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -w")# -nowarn 4018 -nowarn 4305 -nowarn 4244")
 		ENDIF(WIN32 AND NOT UNIX)
-	ENDIF(NOT ${CMAKE_GENERATOR} STREQUAL "MSYS Makefiles")
+	ENDIF(NOT ${CMAKE_GENERATOR} MATCHES "MSYS Makefiles|MinGW Makefiles")
 ENDMACRO(FIXCOMPILEOPTIONS)
 
 MACRO(FIXLINKOPTIONS)#Fix added link options that may cause problems

Lib/DLL/CMakeLists.txt

@@ -42,7 +42,9 @@ add_definitions(-D_RETAIL)
 
 IF(WIN32 AND NOT UNIX)
 	add_definitions(-DWIN32 -D_RAKNET_DLL -D_CRT_NONSTDC_NO_DEPRECATE -D_CRT_SECURE_NO_DEPRECATE)
-	SET( CMAKE_CXX_FLAGS "/GS- /GR-" )
+	IF(MSVC)
+		SET( CMAKE_CXX_FLAGS "/GS- /GR-" )
+	ENDIF()
 ELSE(WIN32 AND NOT UNIX)
 	set_target_properties(SLikeNetDLL PROPERTIES
 		OUTPUT_NAME "slikenet"

Lib/LibStatic/CMakeLists.txt

@@ -42,7 +42,9 @@ add_definitions(-D_RETAIL)
 
 IF(WIN32 AND NOT UNIX)
 	add_definitions(-DWIN32 -D_RAKNET_DLL -D_CRT_NONSTDC_NO_DEPRECATE -D_CRT_SECURE_NO_DEPRECATE)
-	SET( CMAKE_CXX_FLAGS "/GS- /GR-" )
+	IF(MSVC)
+		SET( CMAKE_CXX_FLAGS "/GS- /GR-" )
+	ENDIF()
 ELSE(WIN32 AND NOT UNIX)
 	set_target_properties(SLikeNetLibStatic PROPERTIES
 		OUTPUT_NAME "slikenet"

Source/include/slikenet/BitStream.h

@@ -1694,9 +1694,9 @@ namespace SLNet
 		if (qx < 0.0) qx=0.0;
 		if (qy < 0.0) qy=0.0;
 		if (qz < 0.0) qz=0.0;
-		qx = _copysign( (double) qx, (double) (m21 - m12) );
-		qy = _copysign( (double) qy, (double) (m02 - m20) );
-		qz = _copysign( (double) qz, (double) (m10 - m01) );
+		qx = std::copysign( (double) qx, (double) (m21 - m12) );
+		qy = std::copysign( (double) qy, (double) (m02 - m20) );
+		qz = std::copysign( (double) qz, (double) (m10 - m01) );
 
 		WriteNormQuat(qw,qx,qy,qz);
 	}