feat(build): cross-compile to windows support

No compiling on Windows directly atm (maybe with mingw?). Also removed conan dep.

.gitignore

@@ -1,3 +1,5 @@
 build/
 bots/*.wasm
 bot_src/**/*.wasm
+deps/wasmer/*
+wasmer.dll

CMakeLists.txt

@@ -1,7 +1,5 @@
 cmake_minimum_required(VERSION 3.11) # FetchContent is available in 3.11+
 
-include(${CMAKE_BINARY_DIR}/conanbuildinfo.cmake)
-
 set(CMAKE_C_FLAGS ${CMAKE_C_FLAGS} "-std=c99 -Wall -Wextra -pipe")
 
 if(CMAKE_BUILD_TYPE MATCHES RELEASE)
@@ -12,7 +10,7 @@ if(CMAKE_BUILD_TYPE MATCHES DEBUG)
 	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -O0")
 endif()
 
-if (UNIX)
+if (${CMAKE_SYSTEM_NAME} NOT STREQUAL "Windows")
 	# Use mold on Linux
 	set(CMAKE_C_COMPILER clang)
 	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -fuse-ld=mold")
@@ -22,14 +20,17 @@ project(main)
 
 set(CMAKE_EXPORT_COMPILE_COMMANDS ON)
 
+set(OpenGL_GL_PREFERENCE GLVND)
+
 find_package(raylib 4.0.0 QUIET) # QUIET or REQUIRED
 if (NOT raylib_FOUND) # If there's none, fetch and build raylib
-  include(FetchContent)
-  FetchContent_Declare(
-    raylib
-    URL https://github.com/raysan5/raylib/archive/refs/tags/4.0.0.tar.gz
-  )
-  FetchContent_GetProperties(raylib)
+	include(FetchContent)
+		FetchContent_Declare(
+		raylib
+		URL https://github.com/raysan5/raylib/archive/refs/tags/4.0.0.tar.gz
+		URL_HASH SHA256=11f6087dc7bedf9efb3f69c0c872f637e421d914e5ecea99bbe7781f173dc38c
+	)
+	FetchContent_GetProperties(raylib)
   if (NOT raylib_POPULATED) # Have we downloaded raylib yet?
     set(FETCHCONTENT_QUIET NO)
     FetchContent_Populate(raylib)
@@ -38,14 +39,44 @@ if (NOT raylib_FOUND) # If there's none, fetch and build raylib
   endif()
 endif()
 
-conan_basic_setup()
+if (${CMAKE_SYSTEM_NAME} STREQUAL "Windows")
+	set(IS_WINDOWS "-windows")
+	set(WASMER_LIB "${CMAKE_CURRENT_SOURCE_DIR}/deps/wasmer/package/lib/wasmer.dll.a")
+endif()
+
+if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
+	set(WASMER_LIB "${CMAKE_CURRENT_SOURCE_DIR}/deps/wasmer/package/lib/libwasmer.a")
+
+endif()
+
+
+add_custom_command(
+	OUTPUT
+		${CMAKE_CURRENT_SOURCE_DIR}/deps/wasmer/package/
+		${WASMER_LIB}
+		COMMAND make -C ${CMAKE_CURRENT_SOURCE_DIR}/deps/wasmer/ build-capi${IS_WINDOWS} 
+		COMMAND make -C ${CMAKE_CURRENT_SOURCE_DIR}/deps/wasmer/ package-capi 
+		COMMAND cp ${CMAKE_CURRENT_SOURCE_DIR}/deps/wasmer/package/lib/wasmer.dll . || true
+)
+
+add_custom_target(
+	wasmer ALL
+	DEPENDS ${WASMER_LIB}
+)
+
+if(NOT WASMER_LIB)
+    message(FATAL_ERROR "wasmer library not found")
+endif()
+
+if(WASMER_LIB)
+	message("Wasmer lib located at ${WASMER_LIB}")
+endif()
 
-set(OpenGL_GL_PREFERENCE GLVND)
 
 file(GLOB SRC_FILES src/*.c)
 
 add_executable(${PROJECT_NAME} ${SRC_FILES})
-target_link_libraries(${PROJECT_NAME} raylib ${CONAN_LIBS})
+target_link_libraries(${PROJECT_NAME} raylib ${WASMER_LIB})
 
 # Checks if OSX and links appropriate frameworks (Only required on MacOS)
 if (APPLE)

justfile

@@ -1,33 +1,38 @@
-install_deps:
-	mkdir -p build/debug
-	conan install --profile conan_linux_profile --build=missing . -if build/debug -of build/debug/
-
-install_deps_release:
-	mkdir -p build/release
-	conan install --profile conan_linux_profile --build=missing . -if build/release -of build/release/
-
 configure: 
 	cmake -Bbuild/debug -H. -GNinja -DCMAKE_BUILD_TYPE=Debug
 
 configure_release: 
 	cmake -Bbuild/release -H. -GNinja -DCMAKE_BUILD_TYPE=Release
 
+configure_windows:
+	cmake -Bbuild/debug_win -H. -GNinja -DCMAKE_BUILD_TYPE=Debug -DCMAKE_TOOLCHAIN_FILE=win.toolchain.cmake
+
+configure_windows_release:
+	cmake -Bbuild/release_win -H. -GNinja -DCMAKE_BUILD_TYPE=Release -DCMAKE_TOOLCHAIN_FILE=win.toolchain.cmake
+
 build:
 	ninja -Cbuild/debug -j4
 
 build_release:
 	ninja -Cbuild/release -j4
 
+build_windows:
+	ninja -Cbuild/debug_win -j4
+
+build_windows_release:
+	ninja -Cbuild/release_win -j4
+
 run: build 
-	build/debug/bin/main
+	build/debug/main
 
 run_release: build_release 
-	build/release/bin/main
+	build/release/main
 
-clean_debug:
-	rm -r build/debug
+run_windows: build_windows
+	wine build/debug_win/main.exe
 
-clean_release:
-	rm -r build/release
+run_windows_release: build_windows_release
+	wine build/release_win/main.exe
 
-clean: clean_debug clean_release
+clean: 
+	rm -r build/

src/bots.c

@@ -36,7 +36,7 @@ bool check_wasm_function(const char* func_name, wasm_func_t* func) {
 
 bool setup_bot(const char* wasm_file_path, WasmData* wasm_data, uint8_t player_index) {
 	// First, load the wasmfile
-	FILE* wasm_file = fopen(wasm_file_path, "r");
+	FILE* wasm_file = fopen(wasm_file_path, "rb");
 
 	if (wasm_file == NULL) {
 		printf("Opening wasm file failed");
@@ -63,7 +63,25 @@ bool setup_bot(const char* wasm_file_path, WasmData* wasm_data, uint8_t player_i
 
 	}
 
-	fread(wasm_byte_vec.data, wasm_file_size, 1, wasm_file);
+	size_t total_num_read_bytes = 0;
+	size_t amt_read = 0;
+
+	while (total_num_read_bytes < wasm_file_size) {
+		size_t amt_read = fread(&wasm_byte_vec.data[total_num_read_bytes], 1, wasm_file_size, wasm_file);
+		total_num_read_bytes += amt_read;
+
+		if (amt_read == 0) {
+			break;
+
+		}
+	}
+
+	if (total_num_read_bytes != wasm_byte_vec.size) {
+		printf("Error reading file: Tried to read %ld, instead read %ld\n", wasm_byte_vec.size, total_num_read_bytes);
+		return false;
+
+	}
+
 	fclose(wasm_file);
 
 	wasm_engine_t* wasm_engine = wasm_data->wasm_engine;

win.toolchain.cmake

@@ -0,0 +1,20 @@
+set(CMAKE_SYSTEM_NAME Windows)
+set(TOOLCHAIN_PREFIX x86_64-w64-mingw32)
+
+# cross compilers to use for C and C++
+set(CMAKE_C_COMPILER ${TOOLCHAIN_PREFIX}-gcc)
+set(CMAKE_CXX_COMPILER ${TOOLCHAIN_PREFIX}-g++)
+set(CMAKE_Fortran_COMPILER ${TOOLCHAIN_PREFIX}-gfortran)
+set(CMAKE_RC_COMPILER ${TOOLCHAIN_PREFIX}-windres)
+
+# target environment on the build host system
+#   set 1st to dir with the cross compiler's C/C++ headers/libs
+set(CMAKE_FIND_ROOT_PATH /usr/${TOOLCHAIN_PREFIX})
+
+# modify default behavior of FIND_XXX() commands to
+# search for headers/libs in the target environment and
+# search for programs in the build host environment
+# set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+# set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
+# set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)
+