GCJ, libgcc, collect2 and MinGW

Mon Jul 3 10:24:00 GMT 2006

Ranjit Mathew writes:
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 > Hello,
 > 
 > First off, does any one know why we explicitly include libgcc's
 > spec in the libgcj.spec? The GCC driver already seems to arrange
 > for a "%G %L %G" linking sequence, where %G is the libgcc linking
 > spec and %L is the GCJ linking spec. Since libgcj.spec includes
 > libgcc's spec, we end up specifying libgcc's libraries *three
 > times* to a collect2 invocation. Nothing catastrophic as such,
 > but still weird.
I suspect it's to do with the linker's strict left-to-right argument
processing.
 > On to the main query: Does anyone know the incantation that
 > can be used in libgcj.spec to insert in an option that will
 > affect even the libgcc spec that appears *before it* in the
 > linking sequence? For example, "gcc/config/i386/mingw32.h"
 > defines:
Look at libgcj.spec:
%rename lib liborig
*lib: -lgcj -lm -lpthread -ldl %(libgcc) %(liborig)
Andrew.