I can't compile mplayer and FVWM because of missing X11 libs

Question

when I compile fvwm 2.5.16, I got this error:
In file included from ../libs/FImage.h:10,
                 from Graphics.c:34:
../libs/FShm.h:19:33: error: X11/extensions/XShm.h: No such file or directory
In file included from ../libs/FImage.h:10,
                 from Graphics.c:34:
../libs/FShm.h:31: error: syntax error before 'FShmSeg'
../libs/FShm.h:31: warning: data definition has no type or storage class
../libs/FShm.h:32: error: syntax error before 'FShmSegmentInfo'
And when I compile mplayer in the newest abs tree:
$makepkg
Checking for X11 headers presence ... not found (check if the dev(el) packages are installed)
Checking for X11 libs presence ... yes (using /usr/lib)
Checking for X11 ... no
Error: X11 support required for GUI compilation
Check "configure.log" if you do not understand why it failed.
Makefile:7: config.mak: No such file or directory
make: *** No rule to make target `config.mak'. Stop.
==> ERROR: Build Failed. Aborting...
It seems to miss one or more x11-libs,but
$ pacman -Q |grep libx
libx11 1.0.0-1
libxau 1.0.0-1
libxaw 1.0.1-1
libxcomposite 0.2.2.2-1
libxcursor 1.1.5.2-1
libxdamage 1.0.2.2-1
libxdmcp 1.0.0-1
libxevie 1.0.0-1
libxext 1.0.0-1
libxfce4mcs 4.2.3-1
libxfce4util 4.2.3.2-1
libxfcegui4 4.2.3-1
libxfixes 3.0.1.2-1
libxfont 1.0.0-1
libxfontcache 1.0.1-1
libxft 2.1.8.2-1
libxi 1.0.0-1
libxinerama 1.0.0-1
libxkbfile 1.0.2-1
libxkbui 1.0.1-1
libxklavier 2.1-2
libxml2 2.6.23-1
libxmu 1.0.0-1
libxp 1.0.0-1
libxpm 3.5.4.2-1
libxprintapputil 1.0.1-1
libxprintutil 1.0.1-1
libxrandr 1.1.0.2-1
libxrender 0.9.0.2-1
libxres 1.0.0-1
libxslt 1.1.15-1
libxss 1.0.1-1
libxt 1.0.0-3
libxtrap 1.0.0-1
libxtst 1.0.1-1
libxv 1.0.1-1
libxvmc 1.0.1-1
libxxf86dga 1.0.0-1
libxxf86misc 1.0.0-1
libxxf86vm 1.0.0-1
PLEASE, tell me, what should I do? :?:

Answer 1

You're welcome , plz mark it as solved