I was installing [HTK speech recognition kit][2] from source. When I gave make all
it is giving following error:
(cd HTKLib && make HTKLib.a) \
|| case "" in *k*) fail=yes;; *) exit 1;; esac;
make[1]: Entering directory `/home/krishna/htk/HTKLib'
gcc -ansi -D_SVID_SOURCE -DOSS_AUDIO -D'ARCH="i686"' -Wall -Wno-switch -g -O2 -I. -DPHNALG -c -o HGraf.o HGraf.c
HGraf.c:73:77: fatal error: X11/Xlib.h: No such file or directory
compilation terminated.
make[1]: *** [HGraf.o] Error 1
make[1]: Leaving directory `/home/krishna/htk/HTKLib'
make: *** [HTKLib/HTKLib.a] Error 1
I searched regarding this error [and found that][3]: I need to install package libX11-devel.
$sudo apt-get install libX11-devel
Reading package lists... Done
Building dependency tree
Reading state information... Done
E: Unable to locate package libX11-devel
But it seems that the package does not exist.
/etc/apt/sources.list