Linker warning: can't find atom for N_GSYM stabs (on OS X)

[Frank Rehwinkel]

Building -base with new clang, objc2-1.7-RC, -fobjc-runtime=gnustep, no ARC, no GC, with and without the clang integrated as,

the linker generates these warnings -

 Linking library libgnustep-base ...

clang-3.4: warning: argument unused during compilation: '-pthread'

ld: warning: directory not found for option '-L/Users/frank/local/GNUstep/standalone/lib/objc2-gnu-gnu'

ld: warning: can't find atom for N_GSYM stabs _.objc_sel_namehandleFailureInFunction:file:lineNumber:description: in unix/obj/subproject.o

ld: warning: can't find atom for N_GSYM stabs _.objc_sel_namestringWithUTF8String: in unix/obj/subproject.o

ld: warning: can't find atom for N_GSYM stabs _.objc_sel_namerunLoopShouldBlock: in unix/obj/subproject.o

ld: warning: can't find atom for N_GSYM stabs _.objc_sel_nameobjectAtIndex: in unix/obj/subproject.o