Reorganize resources/ + wasm target (#1244)

* add README.md to resources directory
* add cross/ directory for meson cross files
* fix readme list syntax error
* fix reflink
* disable ASYNCIFY_ADVISE by default
* use executable names instead of hardcoding paths

resources/cross/macos_arm64.txt

@@ -0,0 +1,27 @@
+# cross file for compiling on MacOS ARM (Apple Sillicon).
+# use this file by running meson setup --cross-file resources/cross/macos_arm64.txt <builddir>
+
+[host_machine]
+system = 'darwin'
+cpu_family = 'aarch64'
+cpu = 'arm64'
+endian = 'little'
+
+[binaries]
+c = ['clang']
+cpp = ['clang++']
+objc = ['clang']
+objcpp = ['clang++']
+ar = ['ar']
+strip = ['strip']
+pkgconfig = ['pkg-config']
+
+[built-in options]
+c_args = ['-arch', 'arm64']
+cpp_args = ['-stdlib=libc++', '-arch', 'arm64']
+objc_args = ['-arch', 'arm64']
+objcpp_args = ['-stdlib=libc++', '-arch', 'arm64']
+c_link_args = ['-arch', 'arm64']
+cpp_link_args = ['-arch', 'arm64']
+objc_link_args = ['-arch', 'arm64']
+objcpp_link_args = ['-arch', 'arm64']

resources/cross/wasm.txt

@@ -0,0 +1,46 @@
+# cross file for WASM.
+# use this file by running meson setup --cross-file resources/cross/wasm.txt <builddir>
+
+[constants]
+
+# a list of functions that can run without being asyncified; proceed with caution
+asyncify_ignores = '["SDL_BlitScaled","SDL_UpperBlitScaled","SDL_MapRGB*","SDL_FillRect","SDL_FreeSurface","SDL_CreateRGBSurface","SDL_GetWindowSurface","SDL_PollEvent","SDL_CreateSystemCursor","SDL_SetWindowTitle","SDL_SetCursor","SDL_GetWindowSize","SDL_GetWindowPosition","lua_push*","lua_rawget*","luaL_check*","pcre2*","FT_*","Bezier_*","g_*","FT_*","ft_*","TT_*","tt_*","__*","*printf","gray_*","fopen","fclose","fread","fflush","qsort","sift"]'
+
+# enable advising for optimizing the list above; disable this to prevent flooding logs
+asyncify_advise = '0'
+
+# initial heap size in bytes; make sure it is not too low (around 64mb - 250mb)
+initial_heap = '104857600'
+
+
+[binaries]
+c = 'emcc'
+cpp = 'em++'
+ar = 'emar'
+strip = 'emstrip'
+cmake = ['emmake', 'cmake']
+pkg-config = ['emconfigure', 'pkg-config']
+sdl2-config = ['emconfigure', 'sdl2-config']
+
+
+[properties]
+needs_exe_wrapper = true
+
+
+[built-in options]
+c_args = []
+c_link_args = []
+cpp_args = []
+cpp_link_args = []
+
+
+[project options]
+buildtype = 'release'
+c_link_args = ['-s', 'ALLOW_MEMORY_GROWTH=1', '-s', 'INITIAL_MEMORY=' + initial_heap, '-s', 'ASYNCIFY=1', '-s', 'ASYNCIFY_ADVISE=' + asyncify_advise, '-s', 'ASYNCIFY_STACK_SIZE=6144', '-s', 'ASYNCIFY_REMOVE=' + asyncify_ignores, '-s', 'FORCE_FILESYSTEM=1']
+
+	
+[host_machine]
+system = 'emscripten'
+cpu_family = 'wasm32'
+cpu = 'wasm32'
+endian = 'little'