Error compiling libsndfile

[jofivigo at gmail.com]

Hello. i'm trying to compile libsndfile 1.0.17 from the latest  
MacPorts but I'm getting this error:

/usr/bin/libtool: can't locate file for: -lFLAC
/usr/bin/libtool: file: -lFLAC is not an object file (not allowed in  
a library)
make[3]: *** [libsndfile.la] Error 1
make[2]: *** [all-recursive] Error 1
make[1]: *** [all] Error 2
make: *** [all-recursive] Error 1

Warning: the following items did not execute (for libsndfile):  
com.apple.activate com.apple.build com.apple.destroot com.apple.install
Error: Status 1 encountered during processing.

I've installed FLAC through MacPorts but it still doesn't compile,  
spitting the same errors. Should I install FLAC directly from source,  
even if I don't need it?

Thank you.