Dave Johansen wrote: > On Wed, Dec 16, 2015 at 12:32 PM, Richard Shaw <hobbes1069@xxxxxxxxx> > wrote: > >> On Wed, Dec 16, 2015 at 1:15 PM, Dave Johansen <davejohansen@xxxxxxxxx> >> wrote: >> >>> I'm running into a linker issue when moving code that builds on RHEL 6 >>> to Fedora or RHEL 7. Here's a simple reproducer: >>> >>> Download simple.c from >>> https://github.com/markkilgard/glut/blob/master/progs/examples/simple.c >>> and then run: >>> g++ simple.c -lglut -o simple >>> >> >> My SWG would be that for some reason on EL 6 you're getting the symbols >> for free perhaps due to the transitive nature of linking dynamic >> libraries? >> >> Since all you need to add is "-lGL" and it won't hurt anything on EL 6, >> seems like a pretty straight forward fix. >> > > Yes, in this simple example the fix is easy, but in our actual code it > would mean changing the build command for hundreds of programs and several > of them depend on multiple libraries which depend on multiple libraries, > so it would be pretty time consuming. Plus, that's not even to mention the > complexity and confusion that will be added when everyone wonders why a > program is linking against a library it doesn't use. I think this may explain the differences you're seeing: https://fedoraproject.org/wiki/UnderstandingDSOLinkChange In short, the proper thing would be for the application in question to ilnk -lGL, you only just got away with the linker fixing it for you... until now. -- Rex -- devel mailing list devel@xxxxxxxxxxxxxxxxxxxxxxx http://lists.fedoraproject.org/admin/lists/devel@xxxxxxxxxxxxxxxxxxxxxxx
