# ==============================================================================
# Emscripten Configuration
# ==============================================================================
# Emscripten-specific compile definitions, options, and link flags.
# Mirrors the build steps from hellotext (dev/CMakeLists.txt).
#
# Variables set:
#   EMSCRIPTEN_DEFINITIONS  - Preprocessor definitions for Emscripten
#   EMSCRIPTEN_COMPILE_OPTS - Compile flags for Emscripten
#   EMSCRIPTEN_LINK_OPTS    - Link flags for Emscripten
#
# Requires: Platform.cmake (IS_EMSCRIPTEN)
# ==============================================================================

# ------------------------------------------------------------------------------
# Compile Definitions
# ------------------------------------------------------------------------------
set(EMSCRIPTEN_DEFINITIONS
    "GL_GLEXT_PROTOTYPES=1"
    "GL3_PROTOTYPES=1"
    "EGL_EGLEXT_PROTOTYPES=1"
    "ASIO_DISABLE_THREADS"
)

# ------------------------------------------------------------------------------
# Compile Options
# ------------------------------------------------------------------------------
set(EMSCRIPTEN_COMPILE_OPTS
    "-pthread"
    "-fexceptions"
)

# ------------------------------------------------------------------------------
# Link Options
# ------------------------------------------------------------------------------
set(EMSCRIPTEN_LINK_OPTS
    "-sLEGACY_GL_EMULATION=0"
    "-sUSE_WEBGL2=1"
    "-sFULL_ES3=1"
    "-fexceptions"
    "-sALLOW_MEMORY_GROWTH"
    "-sFETCH"
)

# ------------------------------------------------------------------------------
# Apply Flags
# ------------------------------------------------------------------------------
add_compile_definitions(${EMSCRIPTEN_DEFINITIONS})
add_compile_options(${EMSCRIPTEN_COMPILE_OPTS})
add_link_options(${EMSCRIPTEN_LINK_OPTS})