Just to make sure I'm not looking at the screen cross-eyed, here's the thing
$ nm libqhull.a | grep MY_qh_init_B
00000b1c T MY_qh_init_B
$ hcustom -L . -lqhull -lm SOP_Qhull.C
Linking with 'libqhull'
Linking with 'libm'
Making SOP_Qhull.o and /home/briank/houdini5.5/dso/SOP_Qhull.so from SOP_Qhull.C
SOP_Qhull.C: In method `OP_ERROR SOP_Qhull::cookMySop (OP_Context &)':
SOP_Qhull.C:546: `MY_qh_init_B' undeclared (first use this function)
SOP_Qhull.C:546: (Each undeclared identifier is reported only once for
each function it appears in.)
FYI: "hcustom" is a kind of makefile. Shouldn't the fact that "MY_qh_init_B" is defined in libqhull.a mean that I shouldn't be getting the undeclared error during compile for "SOP_Qhull.h"?