Merge 9fe588ace6 into 766325c395

CMakeLists.txt

@@ -9,6 +9,7 @@ option(CLAY_INCLUDE_CPP_EXAMPLE "Build C++ example" OFF)
 option(CLAY_INCLUDE_RAYLIB_EXAMPLES "Build raylib examples" OFF)
 option(CLAY_INCLUDE_SDL2_EXAMPLES "Build SDL 2 examples" OFF)
 option(CLAY_INCLUDE_SDL3_EXAMPLES "Build SDL 3 examples" OFF)
+option(CLAY_INCLUDE_ALLEGRO4_EXAMPLE "Build Allegro 4.x example" OFF)
 
 message(STATUS "CLAY_INCLUDE_DEMOS: ${CLAY_INCLUDE_DEMOS}")
 
@@ -33,6 +34,9 @@ endif ()
 if(CLAY_INCLUDE_ALL_EXAMPLES OR CLAY_INCLUDE_SDL2_EXAMPLES)
   add_subdirectory("examples/SDL2-video-demo")
 endif ()
+if(CLAY_INCLUDE_ALL_EXAMPLES OR CLAY_INCLUDE_ALLEGRO4_EXAMPLE)
+  add_subdirectory("examples/allegro4-demo")
+endif ()
 if(NOT MSVC AND (CLAY_INCLUDE_ALL_EXAMPLES OR CLAY_INCLUDE_SDL3_EXAMPLES))
     add_subdirectory("examples/SDL3-simple-demo")
 endif()

examples/allegro4-demo/CMakeLists.txt

@@ -0,0 +1,40 @@
+cmake_minimum_required(VERSION 3.27)
+project(allegro4_demo C)
+set(CMAKE_C_STANDARD 99)
+
+include(FetchContent)
+set(FETCHCONTENT_QUIET FALSE)
+
+# Fetch pre-built MinGW binaries
+FetchContent_Declare(
+  allegro4
+  URL https://bitbucket.org/bugsquasher/unofficial-allegro-5-binaries/downloads/A443Deluxe.7z
+)
+
+FetchContent_MakeAvailable(allegro4)
+
+link_directories(${allegro4_SOURCE_DIR}/lib/)
+
+add_executable(allegro4_demo main.c ../../renderers/alleg4/alleg4.c)
+
+target_compile_options(allegro4_demo PUBLIC)
+target_include_directories(allegro4_demo PUBLIC . ${CMAKE_SOURCE_DIR} ${allegro4_SOURCE_DIR}/include/)
+
+# All global variables Allegro makes available are lost when linking statically,
+# at least not when extern-ing all over the place.
+target_link_libraries(allegro4_demo PUBLIC alleg44.dll.a)
+
+set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG}")
+set(CMAKE_C_FLAGS_RELEASE "${CMAKE_C_FLAGS_RELEASE}")
+
+add_custom_command(TARGET allegro4_demo POST_BUILD
+  COMMAND ${CMAKE_COMMAND} -E copy_if_different
+    "${allegro4_SOURCE_DIR}/bin/dlls/alleg44.dll"
+    $<TARGET_FILE_DIR:allegro4_demo>
+)
+
+add_custom_command(
+	TARGET allegro4_demo POST_BUILD
+  COMMAND ${CMAKE_COMMAND} -E copy_directory
+		${CMAKE_CURRENT_SOURCE_DIR}/res
+		${CMAKE_CURRENT_BINARY_DIR}/res)

examples/allegro4-demo/README

@@ -1,3 +0,0 @@
-# Allegro 4 demo
-
-To build this demo on your system of choice, include all source files in this directory, as well as in "renderers/alleg4" and link with a 4.x version of Allegro. It's probably easiest to go with a pre-built binary.

examples/allegro4-demo/main.c

@@ -483,4 +483,13 @@ int main(int argc, char *argv[]) {
 
   return 0;
 }
-END_OF_MAIN()
+
+#ifdef _WIN32
+
+#include <WinDef.h>
+
+int WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) {
+  return main(__argc, __argv);
+}
+
+#endif