如何在 Windows 上构建 Ammo.js？答案

【问题标题】：How to build Ammo.js on Windows?如何在 Windows 上构建 Ammo.js？
【发布时间】：2021-05-05 13:12:20
【问题描述】：

我目前正在尝试按照 README 中的说明在 Windows 上构建 Ammo.js。我有

emcc 在路径中
cmake 通过 Visual Studio 安装 (C:\Program Files (x86)\Microsoft Visual Studio\2019\Community\Common7\IDE\CommonExtensions\Microsoft\CMake\CMake\bin\cmake.exe)
MinGW 通过 Chocolatey 安装

显然，因为我在 Windows 上，cmake 无法解析到 CMakeLists.txt 中的可执行文件的任何路径

set(EMSCRIPTEN_ROOT $ENV{EMSDK}/upstream/emscripten CACHE STRING "Emscripten path")

所以我不得不用我的二进制文件的完整路径替换它们：

set(EMSCRIPTEN_ROOT "C:/Program Files/emsdk/upstream/emscripten" CACHE STRING "Emscripten path")
set(CMAKE_TOOLCHAIN_FILE "C:/Program Files/emsdk/upstream/emscripten/cmake/Modules/Platform/Emscripten.cmake")
set(WEBIDL_BINDER_SCRIPT "C:/Program Files/emsdk/upstream/emscripten/tools/webidl_binder.py")

现在，如果我运行cmake -B builds，cmake 似乎运行没有错误，但它会输出以下文件：

cmake -B builds 
-- Building for: Visual Studio 16 2019
-- Found Python3: C:/Python39/python.exe (found version "3.9.1") found components: 
 Interpreter CMake Deprecation Warning at bullet/CMakeLists.txt:1 (cmake_minimum_required): 
 Compatibility with CMake < 2.8.12 will be removed from a future version of CMake.
 Update the VERSION argument <min> value or use a ...<max> suffix to tell CMake that the project does not need compatibility with older versions. 
 
 OPENGL FOUND
 
 nul 
 
 -- WARNING: you are using the obsolete 'GLU' package, please use 'OpenGL' instead 
 -- Could NOT find OpenGL (missing: OPENGL_opengl_LIBRARY OPENGL_glx_LIBRARY OPENGL_INCLUDE_DIR) 
 -- Configuring done 
 -- Generating done
 -- Build files have been written to: G:/dev/projects/ammo.js/builds

没有 ammo.js、没有 ammo.wasm.js 和没有 ammo.wasm

当我尝试使用 'MinGW Makefiles' 标志编译时，它会出错：

cmake -B builds -G 'MinGW Makefiles'
-- Found Python3: C:/Python39/python.exe (found version "3.9.1") found components: Interpreter 
CMake Error: CMake was unable to find a build program corresponding to "MinGW Makefiles".  CMAKE_MAKE_PROGRAM is not set.  You probably need to select a different build tool.
CMake Error: CMake was unable to find a build program corresponding to "MinGW Makefiles".  CMAKE_MAKE_PROGRAM is not set.  You probably need to select a different build tool.
CMake Error: CMAKE_C_COMPILER not set, after EnableLanguage
CMake Error: CMAKE_CXX_COMPILER not set, after EnableLanguage
-- Configuring incomplete, errors occurred!

我不能使用预建文件调用new Ammo.btBoxShape(new Ammo.btVector3()) throws Uncaught (in promise) RuntimeError: memory access out of bounds，据我了解，我需要在编译期间分配更大的堆。

那么如何在 Windows 上构建 Ammo.js？

【问题讨论】：

标签： cmake windows-10 emscripten ammo.js

【解决方案1】：

这里有两个不同的问题

从 Chocolatey 安装的 MinGw 不包括 mingw32-make.exe。我卸载了它，得到了MinGW-Installer，然后按照这个答案继续：CMake Error: CMake was unable to find a build program corresponding to "MinGW Makefiles"
我必须在第一个命令之后实际运行 cmake --build builds，但我在文档中忽略了这一点

【讨论】：