Problem on installing openMX on arch

i tried to install openmx with

source('http://openmx.psyc.virginia.edu/getOpenMx.R')

but i get this errormessage on my r-terminal:

> source('http://openmx.psyc.virginia.edu/getOpenMx.R')
1. single-threaded
2. multi-threaded [default]
Installing package(s) into ‘/home/martin/.rkward/library’
(as ‘lib’ is unspecified)
versuche URL 'http://openmx.psyc.virginia.edu/packages/src/contrib/OpenMx_1.3.1-2179.tar.gz'
Content type 'application/x-gzip' length 7267970 bytes (6.9 Mb)
URL geöffnet
==================================================
downloaded 6.9 Mb

checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking for gcc option to support OpenMP... -fopenmp
checking whether gcc is installed... yes
checking build system type... x86_64-unknown-linux-gnu
checking host system type... x86_64-unknown-linux-gnu
checking if gcc accepts -dumpversion option... yes
checking gcc version... 4.7.2
checking for gawk... gawk
checking for inst/npsol/linux/x86_64/gcc4.7/libnpsol.a... no

The downloaded source packages are in
‘/tmp/RtmpsI4Ocv/downloaded_packages’
Warnmeldung:
In install.packages(pkgs = c("OpenMx"), repos = repos) :
installation of package ‘OpenMx’ had non-zero exit status
>

what's wrong?