[SOLVED] Link options are incompatible - don't see options anywhere in command

Issue

g++ -Wl,-rpath,/usr/local/lib -o /path-to/executable {list of .o files} -L/usr/X11R6/lib -L/usr/local/lib -lQtGui -L/usr/local/lib -L/usr/openwin/lib -lSM -lICE -lXext -lX11 -lresolv -lsocket -lnsl -lQtCore -lm -lrt -ldl -lpthread

I'm using the above command to compile an executable. Well actually a makefile is doing it for me..but regardless.

I'm getting an error with the above command:

ld: fatal: option -dn and -P are incompatible
ld: fatal: Flags processing errors

I don't see where -dn or -P are being supplied to the linker anywhere in the command or in the makefile. Where is the linker getting this info?

Solution

By trying to temporarily remove each segment of the linking command, I found that removing ",rpath,/usr/local/lib" made the thing work. Which got me thinking that I was setting linker options somewhere else in linux world.

Further investigation proved that I was setting LD_LIBRARY_PATH which included some linker options that caused the conflict. Upon changing that LD_LIBRARY_PATH, things worked as they should have.

Answered By - redhotspike

Answer Checked By - Robin (WPSolving Admin)