Problem to compile Xaw3d on Solaris 10

[rhino64%freesurf.ch@localhost]

Hi All,
     I get strange behaviour when I try to compile Xa3wd package  under Solaris 
10
(with Sun Studio 11 and gcc the result is identical). The variable 
@X11BASE@ is not expanded and the compilation fail. I compile in 32 bits
mode on a Sun Blade 100.

If I type the commands manually, they work. Unfortunately, 
the build process don't continue if I do a "make"
command after having passed manually the faulty commands. 

Do you have any idea on how to solve this problem ? 

Thanks for your help,

Alain

Here is the log of the compilation:
--------------------------------------------------------------------------

Script démarré sur 16 janvier 2007 19:07:20 CET
# bmake package
=> Required installed package digest>=20010302: digest-20060826 found
===> Skipping vulnerability checks.
WARNING: No /usr/pkgsrc/distfiles/pkg-vulnerabilities file found.
WARNING: To fix, install the pkgsrc/security/audit-packages
WARNING: package and run: ``/usr/pkg/sbin/download-vulnerability-list''.
=> Checksum SHA1 OK for Xaw3d-1.5E.tar.gz
=> Checksum RMD160 OK for Xaw3d-1.5E.tar.gz
===> Configuring for Xaw3d-1.5Enb2
mv -f Makefile Makefile.bak
imake -DXISOPENWIN -DUseInstalled -I@X11BASE@/lib/X11/config
"Imakefile.c", line 3: Can't find include file Imake.tmpl
/usr/pkgsrc/x11/Xaw3d/work/.tools/bin/imake: Exit code 2.  Stop.

[wrapper.sh] note: The real command line, after the pkgsrc wrapper, was:
/usr/pkgsrc/x11/Xaw3d/work/.tools/bin/imake -DXISOPENWIN -DUseInstalled 
-I@X11BASE@/lib/X11/config 
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/x11/Xaw3d
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/x11/Xaw3d
# exit

script exécuté sur 16 janvier 2007 19:07:48 CET