I try to build a nx-gnu-gnu-xgps library combo on Darwin. So I tried to compile ffcall-1.6b entering the following commands:
./configure --prefix=$GNUSTEP_SYSTEM_ROOT --datadir=$GNUSTEP_SYSTEM_ROOT/Documentation/html/ffcall went flawlessly
make gave the following output: cd avcall; make -r all make[1]: *** No rule to make target `avcall-unknown.lo', needed by `avcall.lo'. Stop. make: *** [all] Error 2
make debug=yes same as above
make install never reached :-(