使用SDL2在centos 7上运行kivy 1.9.1

Question

我试图在centos 7上使用SDL2进行kivy工作，但是当我运行main.py时，我收到以下消息：

[INFO   ] [Logger      ] Record log in /home/etienne/.kivy/logs/kivy_16-01-14_51.txt
[INFO   ] [Kivy        ] v1.9.1
[INFO   ] [Python      ] v2.7.5 (default, Nov 20 2015, 02:00:19) 
[GCC 4.8.5 20150623 (Red Hat 4.8.5-4)]
[INFO   ] [Factory     ] 179 symbols loaded
[INFO   ] [Image       ] Providers: img_tex, img_dds, img_gif, img_pil (img_pygame, img_ffpyplayer ignored)
[CRITICAL] [Window      ] Unable to find any valuable Window provider at all!
egl_rpi - ImportError: cannot import name bcm
  File "/home/etienne/Demo/Test/test_virtualenv/lib/python2.7/site-packages/kivy/core/__init__.py", line 59, in core_select_lib
    fromlist=[modulename], level=0)
  File "/home/etienne/Demo/Test/test_virtualenv/lib/python2.7/site-packages/kivy/core/window/window_egl_rpi.py", line 12, in <module>
    from kivy.lib.vidcore_lite import bcm, egl

pygame - ImportError: No module named pygame
  File "/home/etienne/Demo/Test/test_virtualenv/lib/python2.7/site-packages/kivy/core/__init__.py", line 59, in core_select_lib
    fromlist=[modulename], level=0)
  File "/home/etienne/Demo/Test/test_virtualenv/lib/python2.7/site-packages/kivy/core/window/window_pygame.py", line 8, in <module>
    import pygame

x11 - ImportError: No module named window_x11
  File "/home/etienne/Demo/Test/test_virtualenv/lib/python2.7/site-packages/kivy/core/__init__.py", line 59, in core_select_lib
    fromlist=[modulename], level=0)

[INFO   ] [Text        ] Provider: pil(['text_pygame'] ignored)
[CRITICAL] [App         ] Unable to get a Window, abort.
 Exception SystemExit: 1 in 'kivy.properties.dpi2px' ignored
[CRITICAL] [App         ] Unable to get a Window, abort.
 Exception SystemExit: 1 in 'kivy.properties.dpi2px' ignored
[CRITICAL] [App         ] Unable to get a Window, abort.
 Exception SystemExit: 1 in 'kivy.properties.dpi2px' ignored
[CRITICAL] [App         ] Unable to get a Window, abort.

我安装了以下库：

SDL.x86_64                            1.2.15-14.el7                  @base      
SDL-devel.x86_64                      1.2.15-14.el7                  @base      
SDL2.x86_64                           2.0.3-9.el7                    @epel      
SDL2-devel.x86_64                     2.0.3-9.el7                    @epel      
SDL_image.x86_64                      1.2.12-11.el7                  @epel      
SDL_mixer.x86_64                      1.2.12-4.el7                   @epel      
SDL_mixer-devel.x86_64                1.2.12-4.el7                   @epel      
SDL_ttf.x86_64                        2.0.11-6.el7                   @epel      
SDL_ttf-devel.x86_64                  2.0.11-6.el7                   @epel   

我在Fedora 20上使用相同的main.py工作，如果我安装了pygame但它太重了，所以我想使用SDL2。
如果您对如何使其工作有任何想法;）

Answer 1

由于您自己在虚拟环境中安装了kivy，因此它是在安装时编译的。 Kivy在编译时会检测可用的库。 如果之后安装了SDL2库，kivy将不会立即获得SDL2支持。 你应该重新安装kivy

pip install --upgrade --force-reinstall kivy

您可能会注意到SDL2库在安装时在控制台输出的开头正确检测到。 之后，当您运行应用程序时，您应该可以看到SDL2提供程序：

[INFO   ] [Logger      ] Record log in /home/u1/.kivy/logs/kivy_16-06-03_4.txt
[INFO   ] [Kivy        ] v1.9.1
[INFO   ] [Python      ] v2.7.10 (default, May 24 2015, 14:46:10) [GCC]
[INFO   ] [Factory     ] 179 symbols loaded
[INFO   ] [Image       ] Providers: img_tex, img_dds, img_gif, img_sdl2, img_pil (img_ffpyplayer ignored)
[INFO   ] [OSC         ] using <multiprocessing> for socket
[INFO   ] [Window      ] Provider: sdl2(['window_egl_rpi'] ignored)

Answer 2

有同样的问题 - 这就是最终为我工作的路线

python3.5 -m pip install kivy --no-use-wheel

这个强制pip编译kivy并找到sdl2 ...