Provide entry point customization (#352)

samples/tetris/build

@@ -4,6 +4,8 @@ DIR=.
 DIST=../../dist
 OSX_CFLAGS=-I/Library/Frameworks/SDL2.framework/Headers
 OSX_LINKER_ARGS="-F /Library/Frameworks -framework SDL2"
+#OSX_CFLAGS=-I/opt/local/include/SDL2
+#OSX_LINKER_ARGS="-L/opt/local/lib -lSDL2"
 LINUX_CFLAGS=-I/usr/include/SDL2
 LINUX_LINKER_ARGS="-L/usr/lib/x86_64-linux-gnu -lSDL2"
 

samples/tetris/sdl.def

@@ -2,6 +2,7 @@ headers = SDL.h stdio.h string.h unistd.h stdlib.h time.h
 excludedFunctions = _IO_flockfile _IO_funlockfile _IO_ftrylockfile \
     _IO_cleanup_region_start _IO_cleanup_region_end \
     mkstemp_dprotected_np 
+entryPoint = SDL_main
 
 compilerOpts.osx = -D_POSIX_SOURCE -mxsave -mavx -mf16c
 compilerOpts.linux = -D_REENTRANT

samples/tetris/tetris.kt

@@ -491,10 +491,6 @@ class Game(width: Int, height: Int, val visualizer: GameFieldVisualizer, val use
 
 }
 
-fun main(args: Array<String>) {
-    SDL_main(args)
-}
-
 fun get_SDL_Error() = SDL_GetError()!!.asCString().toString()
 
 class SDL_Visualizer(val width: Int, val height: Int): GameFieldVisualizer, UserInput {
@@ -806,8 +802,7 @@ class SDL_Visualizer(val width: Int, val height: Int): GameFieldVisualizer, User
     }
 }
 
-@ExportForCppRuntime("SDL_main")
-fun SDL_main(args: Array<String>) {
+fun main(args: Array<String>) {
     var startLevel = 0
     var width = 10
     var height = 20
@@ -828,4 +823,4 @@ fun SDL_main(args: Array<String>) {
     game.startNewGame(startLevel)
 
     return
-}
+}