gcc -I/usr/X11R6/include -fno-common -I/sw/include -fno-common -fPIC -o lib/tcl/xcircuit.dylib -single_module -dynamiclib -flat_namespace -undefined suppress -noprebind xcwrap.o \
        elements.o events.o filelist.o files.o fontfile.o formats.o functions.o help.o keybindings.o libraries.o menucalls.o netlist.o ngspice.o opengl.o parameter.o python.o rcfile.o render.o schema.o selection.o text.o undo.o tclxcircuit.o tkSimple.o tkPixmap.o xcircuit.o  -L/sw/lib  -L/usr/X11R6/lib  -bind_at_load \
          -lc -lXt  -lSM -lICE -lm  -lX11 -lXpm
/usr/bin/libtool: unknown option character `b' in: -bind_at_load
Usage: /usr/bin/libtool -static [-] file [...] [-filelist listfile[,dirname]] [-arch_only arch] [-sacLT]
Usage: /usr/bin/libtool -dynamic [-] file [...] [-filelist listfile[,dirname]] [-arch_only arch] [-o output] [-install_name name] [-compatibility_version #] [-current_version #] [-seg1addr 0x#] [-segs_read_only_addr 0x#] [-segs_read_write_addr 0x#] [-seg_addr_table <filename>] [-seg_addr_table_filename <file_system_path>] [-all_load] [-noall_load]
make[2]: *** [lib/tcl/xcircuit.dylib] Error 1

[10.4.1, XCode2.1]