Harmony port: pthread enable

Author: Jack253-png

CMakeLists.txt

@@ -1543,6 +1543,8 @@ elseif(OHOS)
   sdl_glob_sources("${SDL3_SOURCE_DIR}/src/timer/unix/*.c")
   set(HAVE_SDL_TIMERS TRUE)
 
+  set(SDL_PTHREADS 1)
+
   CheckPTHREAD()
 elseif(EMSCRIPTEN)
   # Hide noisy warnings that intend to aid mostly during initial stages of porting a new

cmake/sdlchecks.cmake

@@ -829,7 +829,7 @@ macro(CheckPTHREAD)
     if(ANDROID OR SDL_PTHREADS_PRIVATE)
       # the android libc provides built-in support for pthreads, so no
       # additional linking or compile flags are necessary
-    elseif(LINUX)
+    elseif(LINUX OR OHOS)
       set(PTHREAD_CFLAGS "-D_REENTRANT")
       set(PTHREAD_LDFLAGS "-pthread")
     elseif(BSDI)