[boost] [config] Possible bug in config/platform/win32.hpp

From: Edward Diener (eddielee_at_[hidden])
Date: 2005-07-23 23:47:36

In config/platform/win32.hpp I see:

#if !defined(__GNUC__) && !defined(BOOST_HAS_DECLSPEC)
#  define BOOST_HAS_DECLSPEC
#endif

This tells me that __declspec can be possibly used for all Windows compilers 
except for gcc. I believe, however, that for Comeau-Win32 __declspec can also 
not be used.

When trying to build Boost libraries for Comeau with the VC7.1 backend, the 
compiler gives this error in the date/time library when trying to compile 
greg_month.cpp with BOOST_ALL_DYN_LINK defined:

""H:\Utilities\BoostLibraries\boost_1_32_0\boost/date_time/gregorian/greg_month.h
pp", line 55: error #70:
           incomplete type is not allowed
     class BOOST_DATE_TIME_DECL greg_month : public greg_month_rep {"
           ^

I could be wrong but this seems to me that the compiler is objecting to 
BOOST_DATE_TIME_DECL, which becomes __declspec(dllexport) because 
BOOST_HAS_DECLSPEC is defined for the Comeau compiler.

Needless to say many other errors along thr same lines occur in the build for 
other libraries which use __declspec(dllexport).