GCC 4.2.0 is unable to compile STLport due to a header conflict.
When compiling any C++ program that includes <iostream>:
In file included from
c:/aaronwl/gcc/root/bin/../lib/gcc/i686-pc-mingw32/4.2.0/../../../../include/c++/4.2.0/../4.2.0/cmath:52,
from /aaronwl/stlport/STLport-5.1.3/stlport/stl/_cmath.h:31,
from
/aaronwl/stlport/STLport-5.1.3/stlport/stl/_cstdlib.h:162,
from /aaronwl/stlport/STLport-5.1.3/stlport/stl/_locale.h:27,
from
/aaronwl/stlport/STLport-5.1.3/stlport/stl/_ios_base.h:30,
from /aaronwl/stlport/STLport-5.1.3/stlport/stl/_ios.h:23,
from /aaronwl/stlport/STLport-5.1.3/stlport/stl/_istream.h:27,
from /aaronwl/stlport/STLport-5.1.3/stlport/iostream:39,
from stuff.cpp:1:
c:/aaronwl/gcc/root/bin/../lib/gcc/i686-pc-mingw32/4.2.0/../../../../include/c++/4.2.0/ext/type_traits.h:184:
error: 'streamsize' in namespace 'std' does not name a type
c:/aaronwl/gcc/root/bin/../lib/gcc/i686-pc-mingw32/4.2.0/../../../../include/c++/4.2.0/ext/type_traits.h:189:
error: expected initializer before '__numeric_traits_floating'
The problem here is that STLport is including <cmath> provided by GCC, assuming
that it will play well. However, GCC's <cmath> needs std::streamsize, and
assumes <iosfwd> will provide it. <iosfwd>, provided by STLport, declares it
as stlpmtx_std::streamsize. std is later redefined to be stlpmtx_std, but this
doesn't happen in time for <cmath>, because this doesn't happen until we exit
from STLport-provided system headers. Thus the declaration can't be found.
I'm not sure who's problem this is, or whether GCC is inclined to do anything
to fix it. But I thought I'd report it because STLport works with previous
versions, and this will probably be a problem for many users.
--
Summary: GCC 4.2.0 incompatible with STLport 5.1.3
Product: gcc
Version: 4.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
AssignedTo: unassigned at gcc dot gnu dot org
ReportedBy: aaronavay62 at aaronwl dot com
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=31481
