Well,
I've tried to work through the solutions to:
ld: common symbols not allowed with MH_DYLIB output format
Which are basically -fno-common on the compile line of each file, but
apart from the fact that tihs doesn't actually work in this case (we
still get the error), it's not really a very good idea.
Does anybody have any suggestions for working around this code:
namespace boost {
namespace io {
namespace detail {
namespace {
templateclass Tr, class Ch inline
void empty_buf(BOOST_IO_STD basic_ostringstreamCh,Tr os) {
static const std::basic_stringCh, Tr emptyStr;
os.str(emptyStr);
}
};};};};
The correct thing to do with this code (for all platforms) is to not
rely on the global variable common stuff (which is new to me, and
seems a bit of a hack), but actually do this code correctly, which
means removing the global variable.
What problem is the code above trying to solve?
If i just do this (which i have done to get my stuff working), there
seems to be no prob:
#ifdef MACHACK
templateclass Tr, class Ch inline
void empty_buf(BOOST_IO_STD basic_ostringstreamCh,Tr os) {
extern const std::basic_stringCh, Tr emptyStr;
os.str(emptyStr);
}
#else
#define empty_buf(_os_) (_os_).str();
#endif
Wouldn't the above two lines achieve basically the same thing (although
I know we hate macros, but since empty_buf is only actually used 3
times in the entire project, could all of the:
empty_buf(oss);
be replaced with:
oss.str();
This would save a whole lot of grief and eliminate this fairly ugly
global variable.
Comments?
-
Paul Hamilton
pHamtec P/L - Software Makers
http://www.phamtec.com/
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