1. 错误描述
gcc: error: long: No such file or directory
1 2 3 4 5 6 | [ 65% ] Building RC object modules/world/CMakeFiles/opencv_world.dir/vs_version.rc.obj gcc: error: long: No such file or directory C:\Mingw-w64\mingw32\bin\windres.exe: preprocessing failed. mingw32-make[2]: *** [modules\world\CMakeFiles\opencv_world.dir\build.make:11240: modules/world/CMakeFiles/opencv_world.dir/vs_version.rc.obj] Error 1 mingw32-make[1]: *** [CMakeFiles\Makefile2:4789: modules/world/CMakeFiles/opencv_world.dir/all] Error 2 mingw32-make: *** [Makefile:179: all] Error 2 |
2. 分析
??打开modules\world\CMakeFiles\opencv_world.dir\build.make的第11240行发现如下内容，可发现错误原因是未成功生成vs_version.rc.obj。
1 2 3 4 | modules/world/CMakeFiles/opencv_world.dir/vs_version.rc.obj: modules/world/CMakeFiles/opencv_world.dir/flags.make modules/world/CMakeFiles/opencv_world.dir/vs_version.rc.obj: modules/world/vs_version.rc @$(CMAKE_COMMAND) -E cmake_echo_color --switch=$(COLOR) --green --progress-dir=D:\opencv\bulid_mingw\CMakeFiles --progress-num=$(CMAKE_PROGRESS_801) "Building RC object modules/world/CMakeFiles/opencv_world.dir/vs_version.rc.obj" cd /d D:\opencv\bulid_mingw\modules\world && C:\Mingw-w64\mingw32\bin\windres.exe -O coff $(RC_DEFINES) $(RC_INCLUDES) $(RC_FLAGS) D:\opencv\bulid_mingw\modules\world\vs_version.rc CMakeFiles\opencv_world.dir\vs_version.rc.obj |
3. 解决方法
??根据build.make中的错误行，自己修改编译命令，手动生成vs_version.rc.obj，并重新mingw32-make。
1 2 | cd /d D:\opencv\bulid_mingw\modules\world C:\Mingw-w64\mingw32\bin\windres.exe D:\opencv\bulid_mingw\modules\world\vs_version.rc -O coff CMakeFiles\opencv_world.dir\vs_version.rc.obj |
编译命令
生成vs_version.rc.obj
重新mingw32-make