[Mesa-users] Can I buld mesa swrast on system without GPU?

[Oleg Gavrilchenko]

On 12/16/19 7:40 PM, Oleg Gavrilchenko wrote:
> Hello!
> Sorry for my English. It is no my first language(Russian).
> I have embedded system with XILINX ZYNQ-7000 processor(ARM Cortex-A9 2 
> cores). This system also has framebuffer video device. Framebuffer 
> with image contains in DDR memory and is transmitted in display by 
> HDMI interface through special DMA(Framebuffer DMA in FPGA). I write 
> simple fbdev driver for this device and it work fine. This system not 
> has any GPU.
> I found out, that mesa can perform software rasterization for Open GL 
> swrast. Can I build mesa swrast for my device and how can I do it?
>
> I try do this with use cross compilation file.
>
> This is a cross compilation file for meson, cross_file.txt:
>
> [binaries]
> c = 'arm-linux-gnueabihf-gcc'
> cpp = 'arm-linux-gnueabihf-g++'
> ar = 'arm-linux-gnueabihf-ar'
> strip = 'arm-linux-gnueabihf-strip'
> pkgconfig = 'pkg-config'
>
> [host_machine]
> system = 'linux'
> cpu_family = 'arm'
> cpu = 'armv7hl'
> endian = 'little'
>
> [properties]
> needs_exe_wrapper = true
> sys_root = '/home/oleg/work/z-turn-dvi/sysroot'
>
> [paths]
> prefix ='/usr'
>
>
>
> I build mesa with that options:
>
> meson  build/ --cross-file cross_file.txt \
>        -Dplatforms=surfaceless \
>        -Dosmesa=gallium \
>        -Dgallium-drivers=swrast \
>        -Ddri-drivers=[] \
>        -Dvulkan-drivers=[] \
>        -Degl=true \
>        -Dgles1=true \
>        -Dgles2=true \
>        -Dglx=disabled
>
> ninja -C build/
>
> build fail with errors:
>
> [84/882] Linking target src/mapi/es1api/libGLESv1_CM.so.1.1.0.
> FAILED: src/mapi/es1api/libGLESv1_CM.so.1.1.0
> arm-linux-gnueabihf-gcc  -o src/mapi/es1api/libGLESv1_CM.so.1.1.0 
> 'src/mapi/es1api/ffa5f0c@@GLESv1_CM at sha/.._entry.c.o' -Wl,--as-needed 
> -Wl,--no-undefined -shared -fPIC -Wl,--start-group 
> -Wl,-soname,libGLESv1_CM.so.1 src/mapi/shared-glapi/libglapi.so.0.0.0 
> -Wl,--gc-sections -pthread 
> -L/home/oleg/work/z-turn-dvi/sysroot/usr/lib -ldrm -lm -ldl 
> -Wl,--end-group '-Wl,-rpath,$ORIGIN/../shared-glapi' 
> -Wl,-rpath-link,/home/oleg/src/mesa-19.2.7/build/src/mapi/shared-glapi
> /opt/Xilinx/SDK/2018.2/gnu/aarch32/lin/gcc-arm-linux-gnueabi/bin/../lib/gcc/arm-linux-gnueabihf/7.2.1/../../../../arm-linux-gnueabihf/bin/ld: 
> cannot find -ldrm
> collect2: error: ld returned 1 exit status
>
> DRM option enable in Linux kernel, but I do not install libdrm on my 
> system. Should I do it? And how it will work with my fbdev?
> Thank you for answers. And sorry for my English.
>
>