https://community.intel.com/t5/Intel-Fortran-Compiler/icpc-in-Linux-compiling-pbrt-IPO-breaks-program/m-p/762049#M17536 pbrt is the physically based renderer from pbrt.org<BR />I'm building on a dual Xeon machine.<BR />I tried to compile as follows, by changing the Makefile:<BR />CXX=icpc<BR />OPT=-ipo -O3 -no-prec-div -axP -ssp -parallel<BR />When running the executable, it has a problem finding routines in the library files, with errors such as:<BR />Error: Can't open plug-in "some_path/pbrt/bin/distant.so" (some_path/pbrt/bin/distant.so: undefined symbol: _ZNK5Scene10WorldBoundEv)<BR />Changing -ipo to -ip fixes the problem. However, this is an unsatisfactory compromise, as I've found that multi-file IPO gives significant results on this kind of C++ program. Any suggestions how to get -ipo to work OK in this instance? Sun, 21 Aug 2005 12:25:07 GMT quince 2005-08-21T12:25:07Z https://community.intel.com/t5/Intel-Fortran-Compiler/icpc-in-Linux-compiling-pbrt-IPO-breaks-program/m-p/762049#M17536 pbrt is the physically based renderer from pbrt.org<BR />I'm building on a dual Xeon machine.<BR />I tried to compile as follows, by changing the Makefile:<BR />CXX=icpc<BR />OPT=-ipo -O3 -no-prec-div -axP -ssp -parallel<BR />When running the executable, it has a problem finding routines in the library files, with errors such as:<BR />Error: Can't open plug-in "some_path/pbrt/bin/distant.so" (some_path/pbrt/bin/distant.so: undefined symbol: _ZNK5Scene10WorldBoundEv)<BR />Changing -ipo to -ip fixes the problem. However, this is an unsatisfactory compromise, as I've found that multi-file IPO gives significant results on this kind of C++ program. Any suggestions how to get -ipo to work OK in this instance? Sun, 21 Aug 2005 12:25:07 GMT https://community.intel.com/t5/Intel-Fortran-Compiler/icpc-in-Linux-compiling-pbrt-IPO-breaks-program/m-p/762049#M17536 quince 2005-08-21T12:25:07Z