Revision 8753 makes infrastructure available to play with gcc-4.x visibility following what was done for the Windows compiler cases and following the ideas in http://gcc.gnu.org/wiki/Visibility.
The idea here is any symbol marked as PLDLLIMPEXP is definitely exported, but the other symbols visibility is either default (exported) or hidden depending on how whether the gcc visibility pragma is either pushed as "(default)" (which was committed so the export situation remains the same as before, i.e., all symbols are exported) or "(hidden)". To get the latter behaviour, change what is commented out for the pragma in include/plplot.h. There is a problem with the "(hidden)" case. Here is the libplplotd result: nm -a src/libplplotd.so |grep ' t ' |grep ' c_' 00000000000205c3 t c_plcol0 0000000000045e74 t c_plenvi 000000000001f893 t c_plgfci 0000000000023d1c t c_plgra 000000000002280c t c_plscmap0n 0000000000020a02 t c_plscol0 000000000001c91c t c_plsdiori 0000000000023de5 t c_pltext So for some reason those particular symbols are local rather than exported. OTOH, c_plcol1, for example is a "T" which means it is exported properly. Currently I cannot spot any differences between e.g., the way plcol0 and plcol1 are treated in our source code for libplplot. Can somebody clue me in about that? Until we get this sorted out we should continue to use the "(default)" pragma rather than the "(hidden)" one in the committed version of plplot.h, but certainly feel free to experiment locally with the "(hidden)" version. Alan __________________________ Alan W. Irwin Astronomical research affiliation with Department of Physics and Astronomy, University of Victoria (astrowww.phys.uvic.ca). Programming affiliations with the FreeEOS equation-of-state implementation for stellar interiors (freeeos.sf.net); PLplot scientific plotting software package (plplot.org); the libLASi project (unifont.org/lasi); the Loads of Linux Links project (loll.sf.net); and the Linux Brochure Project (lbproject.sf.net). __________________________ Linux-powered Science __________________________ ------------------------------------------------------------------------- This SF.Net email is sponsored by the Moblin Your Move Developer's challenge Build the coolest Linux based applications with Moblin SDK & win great prizes Grand prize is a trip for two to an Open Source event anywhere in the world http://moblin-contest.org/redirect.php?banner_id=100&url=/ _______________________________________________ Plplot-devel mailing list Plplot-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/plplot-devel
