Hello all, I've been running into a problem building ginac under Mac OS X 10.4.x (Tiger)/Darwin 8.x. I can compile w/o any problems, but when I run make check I get the following error: /bin/sh ../libtool --tag=CXX --mode=link g++ -g -O2 -o exams exam_paranoia.o exam_numeric.o exam_powerlaws.o exam_inifcns.o exam_inifcns_nstdsums.o exam_differentiation.o exam_polygcd.o exam_normalization.o exam_pseries.o exam_matrices.o exam_lsolve.o exam_indexed.o exam_color.o exam_clifford.o exam_archive.o exam_structure.o exam_hashmap.o exam_misc.o exams.o ../ginac/ libginac.la -L/usr/local/lib -lcln -lgmp g++ -g -O2 -o .libs/exams exam_paranoia.o exam_numeric.o exam_powerlaws.o exam_inifcns.o exam_inifcns_nstdsums.o exam_differentiation.o exam_polygcd.o exam_normalization.o exam_pseries.o exam_matrices.o exam_lsolve.o exam_indexed.o exam_color.o exam_clifford.o exam_archive.o exam_structure.o exam_hashmap.o exam_misc.o exams.o -Wl,-bind_at_load ../ginac/.libs/ libginac.dylib -L/usr/local/lib /usr/local/lib/libcln.dylib /usr/ local/lib/libgmp.dylib /usr/bin/ld: Undefined symbols: GiNaC::structure<sprod_s, GiNaC::compare_std_less>::reg_info collect2: ld returned 1 exit status make[3]: *** [exams] Error 1 make[2]: *** [check-am] Error 2 make[1]: *** [check-recursive] Error 1 make: *** [check] Error 2 Note: I don't see this problem under Mac OS 10.3.x (Panther)/Darwin 7.x. I tried building using both gcc 3.3 and gcc 4.0. gcc 3.3 dies with some linking errors. Any ideas? TIA Marius -- Marius Schamschula, Alabama A & M University, Department of Physics The Center for Hydrology Soil Climatology and Remote Sensing http://optics.physics.aamu.edu/ - http://www.physics.aamu.edu/ http://wx.aamu.edu/ - http://www.aamu.edu/hscars/