Compile error when adding postgresql

[jimmy1987]

I'm trying to add postgresql and followed the tutorial on this forum. But when i recompile it using ./build php n
i get

/usr/bin/ld: cannot find -lltdl
collect2: ld returned 1 exit status
make: *** [libphp4.la] Error 1

What's wrong here?

Edit:

Problem solved by installing libtool and libtool-libs