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我已经为运行 Debian 7（wheezy）的 i.MX6 驱动的 Nitrogen6x 板交叉编译了 Qt 5.1.1。

我已经使用-egl参数配置了 Qt，并且 eglfs 已在配置输出中列为 QPA 后端。

但是，如果我尝试使用-platform eglfs参数运行一个小型示例应用程序，则会遇到此错误：

stdin: is not a tty
[     1] HAL user version 4.6.9 build 6622 Aug 15 2013 13:22:40
[     2] HAL kernel version 4.6.9 build 1210
QML debugging is enabled. Only use this in a safe environment.
bash: line 1:  3673 Segmentation fault      DISPLAY=:0.0 /opt/Test/bin/Test -platform eglfs
Remote application finished with exit code 139.

OpenGL ES2 和 EGL 安装在板上，可以在/usr/lib和中找到/usr/include。遗憾的是，我找不到适合 eglfs 的文档，所以我希望这里的某个人对此有所了解。

这是回溯输出：

    run Test-platform eglfs
Starting program: /opt/Test/bin/Test Test -platform eglfs
[Thread debugging using libthread_db enabled]
Using host libthread_db library "/lib/arm-linux-gnueabihf/libthread_db.so.1".
[     1] HAL user version 4.6.9 build 6622 Aug 15 2013 13:31:17
[     2] HAL kernel version 4.6.9 build 1210
QML debugging is enabled. Only use this in a safe environment.
[New Thread 0x2c6b7460 (LWP 4057)]

Program received signal SIGSEGV, Segmentation fault.
0x2bab6f48 in gcoHAL_QueryChipCount () from /usr/lib/libGAL.so
(gdb) backrace full
Undefined command: "backrace".  Try "help".
(gdb) backrace full[1@t
#0  0x2bab6f48 in gcoHAL_QueryChipCount () from /usr/lib/libGAL.so
No symbol table info available.
#1  0x2ba7ccbc in veglGetThreadData () from /usr/lib/libEGL.so.1
No symbol table info available.
#2  0x2ba74cd0 in eglBindAPI () from /usr/lib/libEGL.so.1
No symbol table info available.
#3  0x2be41934 in ?? () from /usr/local/Qt-Debian/plugins/platforms/libqeglfs.so
No symbol table info available.
#4  0x2be41934 in ?? () from /usr/local/Qt-Debian/plugins/platforms/libqeglfs.so
No symbol table info available.
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) info registers
r0             0x1  1
r1             0x23e54  147028
r2             0x738    1848
r3             0x0  0
r4             0x2bb67d84   733379972
r5             0x23e18  146968
r6             0x2e70c  190220
r7             0x2b430198   725811608
r8             0x7efff9e8   2130704872
r9             0x8  8
r10            0x2b0725c4   721888708
r11            0x7efffae0   2130705120
r12            0x2bab6f1c   732655388
sp             0x7efff8f0   0x7efff8f0
lr             0x2ba7ccbc   732417212
pc             0x2bab6f48   0x2bab6f48 <gcoHAL_QueryChipCount+44>
cpsr           0x80000010   -2147483632
(gdb) x/16i $pc
=> 0x2bab6f48 <gcoHAL_QueryChipCount+44>:   ldr r3, [r3, #12]
   0x2bab6f4c <gcoHAL_QueryChipCount+48>:   sub r2, r3, #1
   0x2bab6f50 <gcoHAL_QueryChipCount+52>:   cmp r2, #2
   0x2bab6f54 <gcoHAL_QueryChipCount+56>:   bhi 0x2bab6f70 <gcoHAL_QueryChipCount+84>
   0x2bab6f58 <gcoHAL_QueryChipCount+60>:   ldr r2, [r4]
   0x2bab6f5c <gcoHAL_QueryChipCount+64>:   mov r0, #0
   0x2bab6f60 <gcoHAL_QueryChipCount+68>:   str r3, [r1]
   0x2bab6f64 <gcoHAL_QueryChipCount+72>:   add r3, r2, #1
   0x2bab6f68 <gcoHAL_QueryChipCount+76>:   str r3, [r4]
   0x2bab6f6c <gcoHAL_QueryChipCount+80>:   pop {r4, pc}
   0x2bab6f70 <gcoHAL_QueryChipCount+84>:   mvn r0, #8
   0x2bab6f74 <gcoHAL_QueryChipCount+88>:   bl  0x2baad5fc
   0x2bab6f78 <gcoHAL_QueryChipCount+92>:   ldr r3, [r4]
   0x2bab6f7c <gcoHAL_QueryChipCount+96>:   mvn r0, #8
   0x2bab6f80 <gcoHAL_QueryChipCount+100>:  add r3, r3, #1
   0x2bab6f84 <gcoHAL_QueryChipCount+104>:  str r3, [r4]
(gdb) thread apply all backtrace

Thread 2 (Thread 0x2c6b7460 (LWP 4057)):
#0  0x2b52ef96 in ?? () from /lib/arm-linux-gnueabihf/libc.so.6
#1  0x2b568634 in _IO_file_close () from /lib/arm-linux-gnueabihf/libc.so.6
#2  0x2b568ffe in _IO_file_close_it () from /lib/arm-linux-gnueabihf/libc.so.6
#3  0x2b56113a in fclose () from /lib/arm-linux-gnueabihf/libc.so.6
#4  0x2bea8d00 in udev_new () from /lib/arm-linux-gnueabihf/libudev.so.0
#5  0x2be7d2e4 in ?? () from /usr/local/Qt-Debian/plugins/platforms/libqeglfs.so
#6  0x2be7d2e4 in ?? () from /usr/local/Qt-Debian/plugins/platforms/libqeglfs.so
Backtrace stopped: previous frame identical to this frame (corrupt stack?)

Thread 1 (Thread 0x2bcb9220 (LWP 4056)):
#0  0x2bab6f48 in gcoHAL_QueryChipCount () from /usr/lib/libGAL.so
#1  0x2ba7ccbc in veglGetThreadData () from /usr/lib/libEGL.so.1
#2  0x2ba74cd0 in eglBindAPI () from /usr/lib/libEGL.so.1
#3  0x2be41934 in ?? () from /usr/local/Qt-Debian/plugins/platforms/libqeglfs.so
#4  0x2be41934 in ?? () from /usr/local/Qt-Debian/plugins/platforms/libqeglfs.so
Backtrace stopped: previous frame identical to this frame (corrupt stack?)
(gdb) quit

我怎么可能修复这个错误？

4

3 回答 3

4

我在使用来自https://github.com/silmerusse/meta-robomind的食谱创建的 Yocto 图像上运行 egl fb 应用程序的 MarSBoard 上发生了完全相同的崩溃。我不得不从http://repository.timesys.com/buildsources/g/gpu-viv-bin-mx6q/复制 EGL/OpenGL 相关的东西。就我而言，galcore.ko 是内置的。

编辑：检查您是否拥有 /dev/galcore 并且它的权限是 crw.rw.rw。（否则 sudo chmod 666 /dev/galcore）。如果您没有 /dev/galcore，请尝试 insmod /lib/modules/..../kernel/drivers/mxc/gpu-viv/galcore.ko。这些步骤为我修复了 ubuntu 映像上的崩溃问题。在 Yocto 图像上，galcore 驱动程序是内置的，并且似乎在那里，但我仍然遇到崩溃。

编辑：Yocto 映像中的崩溃是由错误版本的 EGL/GAL.so 库引起的。显然，内核中内置的 galcore 驱动程序的版本为 4.6.9.6622。它需要来自 gpu-viv-bin-mx6q-3.0.35-4.1.0 的库。使用这些库并将它们手动复制到 /usr/lib 我的 fb 应用程序运行良好，使用硬件 OpenGLES 2.0 和 h264 视频的硬件解码。

于 2013-11-21T15:15:47.577 回答
0

我通过切换到 Yocto 解决了这个问题，因此可以访问最新版本的基本组件。如果您正在开发 i.MX cpu，我强烈建议您查看https://github.com/Freescale/fsl-community-bsp-platform

从 default-distrovars 中删除“x11”和从 poky.conf 中删除“wayland”非常重要，因为这些会导致您遇到错误。

在这样的设置上构建 Qt5 可以正常工作。

于 2013-12-17T19:13:55.083 回答
0

当我忘记加载 galcore 模块时，我遇到了类似的段错误。这是回溯：

#0  0x766062b0 in gcoHAL_QueryChipCount (Hal=Hal@entry=0x0, Count=Count@entry=0x16494)
    at gc_hal_user_query.c:1726
#1  0x766da244 in veglGetThreadData () at gc_egl.c:137
#2  0x766d3210 in eglfGetDisplay (display_id=0x16c08) at gc_egl_init.c:464
#3  eglGetDisplay (DisplayID=0x16c08) at gc_egl_init.c:565

Qt 5.3.2，内核 3.10.17，Galcore 版本 4.6.9.9754

于 2014-11-10T17:20:56.327 回答