make it compilable under openbsd

neo/CMakeLists.txt

@@ -108,6 +108,9 @@ include_directories(${VORBISFILE_INCLUDE_DIR})
 find_package(OpenAL REQUIRED)
 include_directories(${OPENAL_INCLUDE_DIR})
 
+find_package(X11 REQUIRED)
+include_directories(${X11_INCLUDE_DIR})
+
 if (SDL2)
 	# skip SDL2main
 	if(APPLE OR WIN32)

neo/framework/minizip/ioapi.c

@@ -17,7 +17,7 @@
         #define _CRT_SECURE_NO_WARNINGS
 #endif
 
-#if defined(__APPLE__) || defined(IOAPI_NO_64)
+#if defined(__APPLE__) || defined(IOAPI_NO_64) || defined(__OpenBSD__)
 // In darwin and perhaps other BSD variants off_t is a 64 bit value, hence no need for specific 64 bit functions
 #define FOPEN_FUNC(filename, mode) fopen(filename, mode)
 #define FTELLO_FUNC(stream) ftello(stream)

neo/sys/sys_public.h

@@ -41,7 +41,7 @@ typedef enum {
 	CPUID_SSE2							= 0x00080,	// Streaming SIMD Extensions 2
 	CPUID_SSE3							= 0x00100,	// Streaming SIMD Extentions 3 aka Prescott's New Instructions
 	CPUID_ALTIVEC						= 0x00200,	// AltiVec
-} cpuid_t;
+} cpuidSimd_t;
 
 typedef enum {
 	AXIS_SIDE,