[SOLVED] configure GnuTLS - libnettle 3.4.1 was not found

configure GnuTLS - libnettle 3.4.1 was not found - OS X Lion

I'm trying to build GnuTLS-3.x on my OS X Lion and here is my configure command:

./configure --prefix=/usr/local/gnutls-3.4.9 --with-included-libtasn1 --without-p11-kit

It ends up

checking for NETTLE... no
configure: error:
  ***
  *** Libnettle 3.4.1 was not found.

though libnettle-3.4.1 is installed under /usr/local/libnettle-3.4.1 and its pkg-config file libnettle.pc is defined under /usr/local/lib/pkgconfig (I've built nettle-4.3.1 from source successfully)

I've read the stackoverflow post GnuTLS Libnettle 3.4 was not found but it didn't help a bit. All other posts on the Internet didn't help either.

I'm stuck on this error. Any help is appreciated. Thanks.

Solution

I've found the cause of the problem. It was the incorrectly defined environment variable PKG_CONFIG. It was set just to the installation directory of the pkg-config i.e. /usr/local/pkg-config-0.28

However it looks like that it must have been set to the full path plus the pkg-config command itself, like: /usr/local/pkg-config-0.28/bin/pkg-config