CMake build system and some Boom-feature support

Author: lazarv

.gitignore

@@ -45,6 +45,7 @@ STRIFE*.pcx
 .*.swp
 .DS_store
 
+build
 *.bc
 *.wasm
 doom.*

CMakeLists.txt

@@ -0,0 +1,49 @@
+cmake_minimum_required( VERSION 3.0.0 )
+project(wasm-doom)
+
+set(CMAKE_RUNTIME_OUTPUT_DIRECTORY ${CMAKE_CURRENT_LIST_DIR})
+
+include_directories(
+    gifenc
+    opl
+    sdl_mixer
+    src
+    src/doom
+    )
+file (GLOB_RECURSE SRC_FILES *.c)
+
+set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -Oz -Wall \
+    -Wno-\#warnings \
+    -Wno-macro-redefined \
+    -Wno-switch \
+    -s WASM=1 \
+    -s USE_SDL=2 \
+    -s USE_LIBPNG=1 \
+    -s ALLOW_MEMORY_GROWTH=1 \
+    -s NO_EXIT_RUNTIME=1 \
+    -s EXTRA_EXPORTED_RUNTIME_METHODS=['FS'] \
+    --no-heap-copy")
+
+if (CMAKE_BUILD_TYPE MATCHES Debug)
+  add_executable(index ${SRC_FILES})
+  target_link_libraries(index)
+  set_target_properties( index PROPERTIES SUFFIX ".html" )
+
+  set(CMAKE_C_FLAGS_DEBUG "-s ASSERTIONS=2 --source-map-base http://localhost:8000/ -g4 --preload-file ${CMAKE_CURRENT_LIST_DIR}/../[email protected]")
+
+  add_custom_command(TARGET index POST_BUILD
+    WORKING_DIRECTORY ${CMAKE_RUNTIME_OUTPUT_DIRECTORY}
+    COMMAND sed -i index.wasm.map 's|${CMAKE_RUNTIME_OUTPUT_DIRECTORY}/||g' index.wasm.map
+    COMMENT "Fix WebAssembly source map root"
+  )
+
+  em_link_js_library(index ${libraryJsFiles})
+else()
+  add_executable(doom ${SRC_FILES})
+  target_link_libraries(doom)
+  set_target_properties( doom PROPERTIES SUFFIX ".js" )
+
+  set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -s MODULARIZE=1 -s ASSERTIONS=0")
+
+  em_link_js_library(doom ${libraryJsFiles})
+endif()