c++filt and addr2line [was Re: c++filt causing flashing console windows]

Wed Sep 10 09:23:00 GMT 2003

Ranjit Mathew writes:
 > Ranjit Mathew wrote:
 > > Andrew Haley wrote:
 > >> > Ditto for using libbfd v/s invoking addr2line,
 > >>
 > >>This idea seems to come up once or twice a year.
 > >>
 > >>The problem is not technical: it is legal. We cannot do this unless
 > >>the licences of libbfd and libiberty are changed. libiberty is LGPL,
 > >>which might be OK in some cases, but it is not the same as
 > >>GPL+exception. We can't license libgcj under two licences.
 > > 
 > > 
 > > But we (GCJ/libgcj and the rest of GCC) already use lots
 > > of functions from libiberty! For example, I was the one
 > > who submitted a patch to use the "xregex" functions
 > > from libiberty for systems that do not have their
 > > own regex functions in libc.
 > 
 > Sorry, I was wrong - only the programs in "gcc/java" use
 > libiberty - AFAICT, libgcj does not use libiberty. The
 > patch I was referring to was submitted for "fastjar" and
 > not something in libgcj.
Right.
 > libiberty seems to not have a single uniform license (I
 > think Nathanael Nerode was trying to address this). In
 > particular, "cp-demangle.c" seems to be under the GPL
 > with the following addition:
 > ----------------------------- 8< -----------------------------
 > In addition to the permissions in the GNU General Public License, the
 > Free Software Foundation gives you unlimited permission to link the
 > compiled version of this file into combinations with other programs,
 > and to distribute those combinations without any restriction coming
 > from the use of this file. (The General Public License restrictions
 > do apply in other respects; for example, they cover modification of
 > the file, and distribution when not linked into a combined
 > executable.)
 > ----------------------------- 8< -----------------------------
 > 
 > IANAL, much less an expert on licenses, but is this
 > compatible with libgcj's GPL+exception license?
It looks like it, but unless it's exactly the same we'll have to
involve lawyers.
Andrew.