minisip trunk build error

[Juha Heinanen]

once in a while i have tried to compile minisip trunk.  this time i got
this far:

rautu:/usr/src/minisip/trunk> ./build.pl install minisip
install: libmutil libmcrypto libmnetutil libmikey libmsip libminisip minisip
Running 'compile' in libmutil...
Making all in libltdl
make[1]: Entering directory `/usr/src/minisip/trunk/build/x86-pc-linux-gnu/libmutil/libltdl'
make[1]: *** No rule to make target `/usr/src/minisip/trunk/libmutil/libltdl/../libtool.m4', needed by `/usr/src/minisip/trunk/libmutil/libltdl/Makefile.in'.  Stop.
make[1]: Leaving directory `/usr/src/minisip/trunk/build/x86-pc-linux-gnu/libmutil/libltdl'
make: *** [all-recursive] Error 1
system make failed: 512 at ./build.pl line 428.

-- juha