We're working towards switching over to post-April snapshots, but we
have 1000s of R packages to recompile. A couple of those (so far)
have thrown up header conflicts.
Specifically for this report I used
mingw-w64-1.0-bin_i686-mingw_20100702.zip but I first found the
problem with a Linux cross-compiler snapshot. This is a distillation
of a very much more complex issue involving BOOST headers.
If I compile the two-line C++ file test.cpp
#include <process.h>
#include <cstdlib>
with x86_64-w64-mingw32-g++ -c test.cpp I get
In file included from test.cpp:2:0:
e:/r/w64/gcc-4.5.1/lib/gcc/../../x86_64-w64-mingw32/include/c++/4.5.1/cstdlib:166:11:
error: '::_Exit' has not been declared
e:/r/w64/gcc-4.5.1/lib/gcc/../../x86_64-w64-mingw32/include/c++/4.5.1/cstdlib:204:22:
error: '__gnu_cxx::_Exit' has not been declared
This code works in the 20100405 snapshot (of 4.4.4). I have a simple
workaround (#include <cstdlib> at the top of the affected files), but
the code concerned is not mine and I don't believe that should be
necessary. The conflict is caused by this block of code
#ifndef _CRT_TERMINATE_DEFINED
#define _CRT_TERMINATE_DEFINED
void __cdecl __MINGW_NOTHROW exit(int _Code) __MINGW_ATTRIB_NORETURN;
_CRTIMP void __cdecl __MINGW_NOTHROW _exit(int _Code)
__MINGW_ATTRIB_NORETURN;
#pragma push_macro("abort")
#undef abort
void __cdecl __declspec(noreturn) abort(void);
#pragma pop_macro("abort")
#endif
I'd welcome advice about the correct fix here.
Brian Ripley
--
Brian D. Ripley, [email protected]
Professor of Applied Statistics, http://www.stats.ox.ac.uk/~ripley/
University of Oxford, Tel: +44 1865 272861 (self)
1 South Parks Road, +44 1865 272866 (PA)
Oxford OX1 3TG, UK Fax: +44 1865 272595
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