babl error... again...

checking for iso-codes... yes
checking for BABL... no
configure: error: Package requirements (babl >= 0.1.10) were not met:

No package 'babl' found

Consider adjusting the PKG_CONFIG_PATH environment variable if you
installed software in a non-standard prefix.

Alternatively, you may set the environment variables BABL_CFLAGS
and BABL_LIBS to avoid the need to call pkg-config.
See the pkg-config man page for more details.