arrummzen@delta ~/devel/cs/crystal $ cat ./config.log | grep -i cal3d
configure:44346: checking if pkg-config recognizes cal3d
configure:44366: pkg-config --cflags cal3d
configure:44372: pkg-config --libs cal3d
configure:44435: checking for cal3d-config
configure:44779: checking for libcal3d
configure:44868: g++ -o conftest        -L/usr/local/lib conftest.cc -lcal3d  -lnsl  >&5
configure:44949: checking if cal3d is sufficiently recent
configure:45041: g++ -o conftest        -L/usr/local/lib conftest.cc  -lcal3d -lnsl  >&5
| #include <cal3d/cal3d.h>
cs_cv_cal3d_recent=no
cs_cv_cal3d_recent_cflags=
cs_cv_cal3d_recent_lflags=
cs_cv_cal3d_recent_libs=
cs_cv_libcal3d=yes
cs_cv_libcal3d_cflags=
cs_cv_libcal3d_lflags=
cs_cv_libcal3d_libs=-lcal3d
cs_cv_prog_pkg_config_cal3d=yes
cs_cv_prog_pkg_config_cal3d_flags=@@@-lcal3d
cs_cv_with_cal3d=yes
CONFIG_CAL3D=''
ac_ct_CONFIG_CAL3D=''