help with dl module and clang

[Joerg Sonnenberger]

On Sat, Nov 03, 2018 at 04:47:37PM +0100, Dimitry Andric wrote:
> On 3 Nov 2018, at 15:51, Daniel Braniss <danny at cs.huji.ac.il> wrote:
> > 
> > I have a program that loads some modules via dlopen(),  these modules call some routines
> > which are in the main program, this works when using gcc, but with cc it does not.
> > 
> > when compiling the main program I use  -export-dynamic, and the modules link fine when compiled with
> > gcc, but when compiling with clang/cc i get dlerror: ...Undefined symbol …
> > BTW, when linking the main program with cc I get
> > 	/usr/bin/ld: warning: cannot find entry symbol xport-dynamic; defaulting to 0000000000402140
> 
> Instead of using -export-dynamic (which is a linker flag) as a flag to
> cc, try using -Wl,-export-dynamic instead.  Now, the linker interprets
> this as the -e flag, which is something totally different.

Or cc -rdynamic.

Joerg