I am trying to follow the instructions listed above for installing HTK.   I am using a 32-bit system.  I get as far as running

$./configure --prefix=/home/yourusername/bin/htk-3.4

But when I try to run make all, I get about 800 errors. At the top of the list of errors, my terminal says,

"HGraf.c:73:77: error: X11/Xlib.h: No such file or directory
HGraf.c:74:23: error: X11/Xutil.h: No such file or directory
HGraf.c:75:21: error: X11/Xos.h: No such file or directory
HGraf.c:77:27: error: X11/keysymdef.h: No such file or directory"

and then it has several lines of stuff looking like,

"HGraf.c:87: error: expected ‘=’, ‘,’, ‘;’, ‘asm’ or ‘__attribute__’ before ‘*’ token"

 Does anyone know what's going on here/how I can fix this?

By the way, I coculd not find a module to make my version of GCC compatible with 3.4.  Instead, I simply downloaded GCC 3.4 and edited the Makefile so that it would run GCC 3.4 instead of my new version of GCC.

Thanks!

i did the yum install but says

[root@localhost HTKDemo]# yum install libX11
Loaded plugins: refresh-packagekit
Setting up Install Process
Package libX11-1.2.2-1.fc11.i586 already installed and latest version
Nothing to do

and when i do make all again the same error...

[root@localhost htk]# make all
(cd HTKLib && make HTKLib.a) \
      || case "" in *k*) fail=yes;; *) exit 1;; esac;
make[1]: Entering directory `/home/Prashant/bin/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: error: X11/Xlib.h: No such file or directory
HGraf.c:74:23: error: X11/Xutil.h: No such file or directory
HGraf.c:75:21: error: X11/Xos.h: No such file or directory
HGraf.c:77:27: error: X11/keysymdef.h: No such file or directory

Please help. Thanks.

>HGraf.c:73:77: error: X11/Xlib.h: No such file or directory

you likely need the development package... (on Fedora) try:

yum install "libX11-devel"