On Tue, Sep 03, 2013 at 11:42:32AM -0400, Yaroslav Halchenko wrote: > ~/afni-0.20130830~dfsg.1/build-x86_64-linux-gnu/avovk# gcc --param > ssp-buffer-size=4 -D_FORTIFY_SOURCE=2 -Wformat-security -g -O2 > -fstack-protector > --param=ssp-buffer-size=4 -Wformat -Werror=format-security -Wno-unused > -fopenmp -DUSE_OMP -Wl,-z,now -Wl,-z,relro -Wl,--no-undefined > CMakeFiles/3dkmeans.dir/3dkmeans.c.o > CMakeFiles/3dkmeans.dir/cluster_floatNOMASK.c.o > CMakeFiles/3dkmeans.dir/thd_segtools_fNM.c.o -o 3dkmeans > ../libmri.so ../libmrix.so ../coxplot/libcoxplot.so libsegtools.so -lSM -lICE > -lX11 -lXext -lXm -lXmHTML ../libmri.so -lvolpack -lnetcdf -lXt -lf2c > -lgiftiio -lnifticdf -lniftiio -lz -lnifticdf -lniftiio -lz -lgsl -lgslcblas > -lm > -Wl,-rpath,"/tmp/buildd/afni-0.20130830~dfsg.1/build-x86_64-linux-gnu:/tmp/buildd/afni-0.20130830~dfsg.1/build-x86_64-linux-gnu/coxplot:/tmp/buildd/a > fni-0.20130830~dfsg.1/build-x86_64-linux-gnu/avovk:" -DNDEBUG > /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../lib/libgsl.so: undefined > reference to `cblas_ztrsv' > /usr/lib/gcc/x86_64-linux-gnu/4.7/../../../../lib/libgsl.so: undefined > reference to `cblas_scasum' If you ship a public library with undefined symbols it is not just simply wrong, it's also a violation of a Policy "must" (10.2) and hence an RC bug. In any case, please don't. It's 2013 already.
> and here you can see that ld finds the definition but then reports that it is > undefined in libgsl.so (which is factually true but I thought it would use the > one from libgslcblas by then). You can't link in shared libs with undefined symbols when using --as-needed which is default on Ubuntu (well, sometimes you probably can but not in this case). -- WBR, wRAR
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