For the x11grab input device to be compiled you need to run ./configure with –enable-x11grab.
When you’ve run ./configure x11grab should be listed in the indev section like this.
Enabled indevs: dv1394 lavfi v4l2 fbdev oss x11_grab_device
If x11grab was not listed, then it is most likely Xfixes.h and/or XShm.h files are not in your compiler include path. These are validated in the ./configure script, and x11grab is disabled if they are not available. This is the check inside the configure script:
enabled x11grab && check_header X11/Xlib.h && check_header X11/extensions/XShm.h && check_header X11/extensions/Xfixes.h && check_func XOpenDisplay -lX11 && check_func XShmCreateImage -lX11 -lXext && check_func XFixesGetCursorImage -lX11 -lXext -lXfixes
On ubuntu 11.10 the libraries are available, but the headers are not installed. XShm.h is in the libxext-dev package and Xfixes.h is in libxfixes-dev
sudo apt-get install libxfixes-dev sudo apt-get install libxext-dev
When compiling for RHEL 4u4 I discovered the headers were available, but in non-standard locations not on the default compiler/linker include paths. It was necessary to point ./configure in the right direction.
# first locate the headers. find / -name "Xfixes.h" /usr/foo/bar/X11/extensions/Xfixes.h # next locate the libs find / -name "libXfixes.so" /lib/foo/bar/libXfixes.so # call configure with the compiler + linker locations ./configure \ other options ... \ --extra-cflags="-I/usr/foo/bar" \ --extra-ldflags="-L../lib/foo/bar"
