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[javascript] Add TI_EMSCRIPTENED to cmake options (JS 1/n) #4093

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merged 1 commit into from
Jan 24, 2022
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[javascript] Add TI_EMSCRIPTENED to cmake options (JS 1/n) #4093

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76 changes: 53 additions & 23 deletions cmake/TaichiCore.cmake
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Original file line number Diff line number Diff line change
Expand Up @@ -7,6 +7,19 @@ option(TI_WITH_OPENGL "Build with the OpenGL backend" ON)
option(TI_WITH_CC "Build with the C backend" ON)
option(TI_WITH_VULKAN "Build with the Vulkan backend" OFF)
option(TI_WITH_DX11 "Build with the DX11 backend" OFF)
option(TI_EMSCRIPTENED "Build using emscripten" OFF)

if(TI_EMSCRIPTENED)
set(TI_WITH_LLVM OFF)
set(TI_WITH_METAL OFF)
set(TI_WITH_CUDA OFF)
set(TI_WITH_OPENGL OFF)
set(TI_WITH_CC OFF)
set(TI_WITH_DX11 OFF)

set(TI_WITH_VULKAN ON)
set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DTI_EMSCRIPTENED")
endif()

if(UNIX AND NOT APPLE)
# Handy helper for Linux
Expand Down Expand Up @@ -37,7 +50,7 @@ if (WIN32)
endif()

set(TI_WITH_GGUI OFF)
if(TI_WITH_VULKAN)
if(TI_WITH_VULKAN AND NOT TI_EMSCRIPTENED)
set(TI_WITH_GGUI ON)
endif()

Expand Down Expand Up @@ -190,6 +203,12 @@ file(GLOB TAICHI_PYBIND_SOURCE
)
list(REMOVE_ITEM TAICHI_CORE_SOURCE ${TAICHI_PYBIND_SOURCE})

file(GLOB TAICHI_EMBIND_SOURCE
"taichi/javascript/*.cpp"
"taichi/javascript/*.h"
)
list(REMOVE_ITEM TAICHI_CORE_SOURCE ${TAICHI_EMBIND_SOURCE})

# TODO(#2196): Rename these CMAKE variables:
# CORE_LIBRARY_NAME --> TAICHI_ISOLATED_CORE_LIB_NAME
# CORE_WITH_PYBIND_LIBRARY_NAME --> TAICHI_CORE_LIB_NAME
Expand Down Expand Up @@ -220,7 +239,7 @@ endif()
set(LIBRARY_NAME ${CORE_LIBRARY_NAME})

# GLFW not available on Android
if (TI_WITH_OPENGL OR TI_WITH_VULKAN AND NOT ANDROID)
if (TI_WITH_OPENGL OR TI_WITH_VULKAN AND NOT ANDROID AND NOT TI_EMSCRIPTENED)
set(GLFW_BUILD_DOCS OFF CACHE BOOL "" FORCE)
set(GLFW_BUILD_TESTS OFF CACHE BOOL "" FORCE)
set(GLFW_BUILD_EXAMPLES OFF CACHE BOOL "" FORCE)
Expand Down Expand Up @@ -383,28 +402,39 @@ endforeach ()

message("PYTHON_LIBRARIES: " ${PYTHON_LIBRARIES})

set(CORE_WITH_PYBIND_LIBRARY_NAME taichi_core)
# Cannot compile Python source code with Android, but TI_EXPORT_CORE should be set and
# Android should only use the isolated library ignoring those source code.
if (NOT ANDROID)
add_library(${CORE_WITH_PYBIND_LIBRARY_NAME} SHARED ${TAICHI_PYBIND_SOURCE})
else()
add_library(${CORE_WITH_PYBIND_LIBRARY_NAME} SHARED)
endif ()
# It is actually possible to link with an OBJECT library
# https://cmake.org/cmake/help/v3.13/command/target_link_libraries.html?highlight=target_link_libraries#linking-object-libraries
target_link_libraries(${CORE_WITH_PYBIND_LIBRARY_NAME} PUBLIC ${CORE_LIBRARY_NAME})

# These commands should apply to the DLL that is loaded from python, not the OBJECT library.
if (MSVC)
set_property(TARGET ${CORE_WITH_PYBIND_LIBRARY_NAME} APPEND PROPERTY LINK_FLAGS /DEBUG)
endif ()

if (WIN32)
set_target_properties(${CORE_WITH_PYBIND_LIBRARY_NAME} PROPERTIES RUNTIME_OUTPUT_DIRECTORY
"${CMAKE_CURRENT_SOURCE_DIR}/runtimes")
endif ()
if(NOT TI_EMSCRIPTENED)
set(CORE_WITH_PYBIND_LIBRARY_NAME taichi_core)
# Cannot compile Python source code with Android, but TI_EXPORT_CORE should be set and
# Android should only use the isolated library ignoring those source code.
if (NOT ANDROID)
add_library(${CORE_WITH_PYBIND_LIBRARY_NAME} SHARED ${TAICHI_PYBIND_SOURCE})
else()
add_library(${CORE_WITH_PYBIND_LIBRARY_NAME} SHARED)
endif ()
# It is actually possible to link with an OBJECT library
# https://cmake.org/cmake/help/v3.13/command/target_link_libraries.html?highlight=target_link_libraries#linking-object-libraries
target_link_libraries(${CORE_WITH_PYBIND_LIBRARY_NAME} PUBLIC ${CORE_LIBRARY_NAME})

# These commands should apply to the DLL that is loaded from python, not the OBJECT library.
if (MSVC)
set_property(TARGET ${CORE_WITH_PYBIND_LIBRARY_NAME} APPEND PROPERTY LINK_FLAGS /DEBUG)
endif ()

if (WIN32)
set_target_properties(${CORE_WITH_PYBIND_LIBRARY_NAME} PROPERTIES RUNTIME_OUTPUT_DIRECTORY
"${CMAKE_CURRENT_SOURCE_DIR}/runtimes")
endif ()
endif()

if(TI_EMSCRIPTENED)
set(CORE_WITH_EMBIND_LIBRARY_NAME taichi)
add_executable(${CORE_WITH_EMBIND_LIBRARY_NAME} ${TAICHI_EMBIND_SOURCE})
target_link_libraries(${CORE_WITH_EMBIND_LIBRARY_NAME} PUBLIC ${CORE_LIBRARY_NAME})
target_compile_options(${CORE_WITH_EMBIND_LIBRARY_NAME} PRIVATE "-Oz")
# target_compile_options(${CORE_LIBRARY_NAME} PRIVATE "-Oz")
set_target_properties(${CORE_LIBRARY_NAME} PROPERTIES LINK_FLAGS "-s ERROR_ON_UNDEFINED_SYMBOLS=0 -s ASSERTIONS=1")
set_target_properties(${CORE_WITH_EMBIND_LIBRARY_NAME} PROPERTIES LINK_FLAGS "--bind -s MODULARIZE=1 -s EXPORT_NAME=createTaichiModule -s WASM=0 --memory-init-file 0 -Oz --closure 1 -s ERROR_ON_UNDEFINED_SYMBOLS=0 -s ASSERTIONS=1 -s NO_DISABLE_EXCEPTION_CATCHING")
endif()

if(TI_WITH_GGUI)
include_directories(SYSTEM PRIVATE external/glm)
Expand Down
4 changes: 4 additions & 0 deletions cmake/TaichiExamples.cmake
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Original file line number Diff line number Diff line change
@@ -1,5 +1,7 @@
cmake_minimum_required(VERSION 3.0)

if(NOT TI_EMSCRIPTENED)

set(EXAMPLES_NAME taichi_cpp_examples)

file(GLOB_RECURSE TAICHI_EXAMPLES_SOURCE
Expand All @@ -24,3 +26,5 @@ if (WIN32)
set_target_properties(${EXAMPLES_NAME} PROPERTIES RUNTIME_OUTPUT_DIRECTORY_RELWITHDEBINFO ${EXAMPLES_OUTPUT_DIR})
endif()
target_link_libraries(${EXAMPLES_NAME} taichi_isolated_core)

endif()