Box2D官网：Box2D

Box2D源码：Open Source

Requiremets:

1.Cmake

2.MinGW

3.Box2D

Step 1.

1).

2).点击Configure

出现如下提示：

You have called ADD_LIBRARY for library glfw without any source files. This typically indicates a problem with your CMakeLists.txt file

if (_GLFW_COCOA)
    set(glfw_HEADERS ${common_HEADERS} cocoa_platform.h iokit_joystick.h
                     posix_tls.h)
    set(glfw_SOURCES ${common_SOURCES} cocoa_init.m cocoa_monitor.m
                     cocoa_window.m iokit_joystick.m mach_time.c posix_tls.c)
elseif (_GLFW_WIN32)
    set(glfw_HEADERS ${common_HEADERS} win32_platform.h win32_tls.h
                     winmm_joystick.h)
    set(glfw_SOURCES ${common_SOURCES} win32_init.c win32_monitor.c win32_time.c
                     win32_tls.c win32_window.c winmm_joystick.c)
elseif (_GLFW_X11)
    set(glfw_HEADERS ${common_HEADERS} x11_platform.h xkb_unicode.h
                     linux_joystick.h posix_time.h posix_tls.h)
    set(glfw_SOURCES ${common_SOURCES} x11_init.c x11_monitor.c x11_window.c
                     xkb_unicode.c linux_joystick.c posix_time.c posix_tls.c)
elseif (_GLFW_WAYLAND)
    set(glfw_HEADERS ${common_HEADERS} wl_platform.h linux_joystick.h
                     posix_time.h posix_tls.h xkb_unicode.h)
    set(glfw_SOURCES ${common_SOURCES} wl_init.c wl_monitor.c wl_window.c
                     linux_joystick.c posix_time.c posix_tls.c xkb_unicode.c)
elseif (_GLFW_MIR)
    set(glfw_HEADERS ${common_HEADERS} mir_platform.h linux_joystick.h
                     posix_time.h posix_tls.h xkb_unicode.h)
    set(glfw_SOURCES ${common_SOURCES} mir_init.c mir_monitor.c mir_window.c
                     linux_joystick.c posix_time.c posix_tls.c xkb_unicode.c)
endif()

将整个段落替换成如下：

if (_GLFW_COCOA)
set(glfw_HEADERS ${common_HEADERS} cocoa_platform.h iokit_joystick.h
                 posix_tls.h)
set(glfw_SOURCES ${common_SOURCES} cocoa_init.m cocoa_monitor.m
                 cocoa_window.m iokit_joystick.m mach_time.c posix_tls.c)
elseif (_GLFW_WIN32)
set(glfw_HEADERS ${common_HEADERS} win32_platform.h win32_tls.h
                 winmm_joystick.h)
set(glfw_SOURCES ${common_SOURCES} win32_init.c win32_monitor.c win32_time.c
                 win32_tls.c win32_window.c winmm_joystick.c)
elseif (_GLFW_X11)
set(glfw_HEADERS ${common_HEADERS} x11_platform.h xkb_unicode.h
                 linux_joystick.h posix_time.h posix_tls.h)
set(glfw_SOURCES ${common_SOURCES} x11_init.c x11_monitor.c x11_window.c
                 xkb_unicode.c linux_joystick.c posix_time.c posix_tls.c)
elseif (_GLFW_WAYLAND)
set(glfw_HEADERS ${common_HEADERS} wl_platform.h linux_joystick.h
                 posix_time.h posix_tls.h xkb_unicode.h)
set(glfw_SOURCES ${common_SOURCES} wl_init.c wl_monitor.c wl_window.c
                 linux_joystick.c posix_time.c posix_tls.c xkb_unicode.c)
elseif (_GLFW_MIR)
set(glfw_HEADERS ${common_HEADERS} mir_platform.h linux_joystick.h
                 posix_time.h posix_tls.h xkb_unicode.h)
set(glfw_SOURCES ${common_SOURCES} mir_init.c mir_monitor.c mir_window.c
                 linux_joystick.c posix_time.c posix_tls.c xkb_unicode.c)
else()
set(glfw_HEADERS ${common_HEADERS} win32_platform.h win32_tls.h
                     winmm_joystick.h)
set(glfw_SOURCES ${common_SOURCES} win32_init.c win32_monitor.c win32_time.c
                     win32_tls.c win32_window.c winmm_joystick.c)            
endif()

解决办法：

将Box2Dimgui文件夹下所有文件复制到Box2DTestbedFramework文件夹下，但是还少两个文件：RenderGL3.h RenderGL3.cpp文件，链接地址：RenderGL3

完成该步骤之重新使用cmake进行构建

Step 2.

在构建的地址打开命令行输入make出现如下错误：

将出现问题的文件中的nullptr统一改成NULL

修改完之后使用cmake重新构建，回到Step 2输入make指令

Step 3. 

make install