Add Haiku (BeOS-like OS) support (#1858)

src/CMakeLists.txt

@@ -154,11 +154,13 @@ endif()
 
 if (WIN32)
     target_link_libraries(core PRIVATE ole32 comctl32 wsock32 ws2_32)
-elseif(NOT APPLE)
+elseif(NOT APPLE AND NOT HAIKU)
     check_library_exists(rt shm_open "" NEED_LIBRT)
     if (NEED_LIBRT)
         target_link_libraries(core PRIVATE rt)
     endif()
+elseif(HAIKU)
+	target_link_libraries(core PRIVATE network)
 endif()
 
 if (ENABLE_JIT_PROFILING)

src/sha1/sha1.c

@@ -27,6 +27,9 @@ A million repetitions of "a"
 #if defined(__sun)
 #include "solarisfixes.h"
 #endif
+#if defined(__HAIKU__)
+#include <ByteOrder.h>
+#endif
 #include "sha1.h"
 
 #ifndef BYTE_ORDER