Re: [blfs-dev] v4l-utils and SDL2 (may require setting flags)
Hi Ryan On 3/30/20 8:50 PM, Ryan Marsaw via blfs-dev wrote: Hello all. When building v4l-utils per BLFS instructions I get the following at the configure stage: [...] checking for SDL2... no [...] The only way I could get v4l-utils to recognize SDL2 was to set SDL2_LIBS and SDL2_CFLAGS: SDL2_LIBS=/usr/lib SDL2_CFLAGS=/usr/include/SDL2 ./configure ... Can anyone else confirm this? As I have SDL2 in /opt/X11, I always had to use those: SDL2_CFLAGS="-I/opt/X11/include/SDL2 -D_REENTRANT" export SDL2_CFLAGS SDL2_LIBS="-L/opt/X11/lib -Wl,-rpath,-L/opt/X11/lib -Wl,--enable-new-dtags -lSDL2 -lSDL2_image" export SDL2_LIBS As Bruce mentioned, your problem might be SDL2_image, this is needed for sdl support. Bye Tim -- http://lists.linuxfromscratch.org/listinfo/blfs-dev FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page
Re: [blfs-dev] v4l-utils and SDL2 (may require setting flags)
On Mon, 30 Mar 2020, Bruce Dubbs via blfs-dev wrote: On 3/30/20 1:50 PM, Ryan Marsaw via blfs-dev wrote: Hello all. When building v4l-utils per BLFS instructions I get the following at the configure stage: [...] checking for SDL2... no [...] The only way I could get v4l-utils to recognize SDL2 was to set SDL2_LIBS and SDL2_CFLAGS: SDL2_LIBS=/usr/lib SDL2_CFLAGS=/usr/include/SDL2 ./configure ... Can anyone else confirm this? Did you try running ldconfig? -- Bruce -- http://lists.linuxfromscratch.org/listinfo/blfs-dev FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page Hi Bruce. It appears the reason SDL2 wasn't being picked up by v4l-utils is that it checks for SDL2 as well as SDL_image, which is a separate package: https://www.libsdl.org/projects/SDL_image/ I installed SDL_image and v4l-utils was then able to detect SDL2 as per BLFS instructions. Perhaps a note on the v4l-utils page should mention that SDL_image is required in order to have SDL2 support. Cheers, --Ryan -- http://lists.linuxfromscratch.org/listinfo/blfs-dev FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page
Re: [blfs-dev] v4l-utils and SDL2 (may require setting flags)
On Mon, 30 Mar 2020, Bruce Dubbs via blfs-dev wrote: On 3/30/20 1:50 PM, Ryan Marsaw via blfs-dev wrote: Hello all. When building v4l-utils per BLFS instructions I get the following at the configure stage: [...] checking for SDL2... no [...] The only way I could get v4l-utils to recognize SDL2 was to set SDL2_LIBS and SDL2_CFLAGS: SDL2_LIBS=/usr/lib SDL2_CFLAGS=/usr/include/SDL2 ./configure ... Can anyone else confirm this? Did you try running ldconfig? -- Bruce -- http://lists.linuxfromscratch.org/listinfo/blfs-dev FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page I ran it just now, and received the same message. --Ryan -- http://lists.linuxfromscratch.org/listinfo/blfs-dev FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page
Re: [blfs-dev] v4l-utils and SDL2 (may require setting flags)
On 3/30/20 1:50 PM, Ryan Marsaw via blfs-dev wrote: Hello all. When building v4l-utils per BLFS instructions I get the following at the configure stage: [...] checking for SDL2... no [...] The only way I could get v4l-utils to recognize SDL2 was to set SDL2_LIBS and SDL2_CFLAGS: SDL2_LIBS=/usr/lib SDL2_CFLAGS=/usr/include/SDL2 ./configure ... Can anyone else confirm this? Did you try running ldconfig? -- Bruce -- http://lists.linuxfromscratch.org/listinfo/blfs-dev FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page
[blfs-dev] v4l-utils and SDL2 (may require setting flags)
Hello all. When building v4l-utils per BLFS instructions I get the following at the configure stage: [...] checking for SDL2... no [...] The only way I could get v4l-utils to recognize SDL2 was to set SDL2_LIBS and SDL2_CFLAGS: SDL2_LIBS=/usr/lib SDL2_CFLAGS=/usr/include/SDL2 ./configure ... Can anyone else confirm this? Cheers, --Ryan -- http://lists.linuxfromscratch.org/listinfo/blfs-dev FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page
