Hi,
Brian’s example was incomplete and won’t compile for other reasons, thats
probably what you are seeing (no main{..} and a missing ;}. The easiest is to look at http://stackoverflow.com/questions/19649421/something-odd-happened-to-c-11-in-mavericks I can reproduce the issue as per there. i.e. pb-d-128-141-128-171 ~ > cat test.cpp #include <cctype> int main() { std::isalnum('c'); return 0; } pb-d-128-141-128-171 ~ > g++-mp-4.8 test.cpp pb-d-128-141-128-171 ~ > g++-mp-4.8 -std=c++11 test.cpp Undefined symbols for architecture x86_64: "isalnum(int)", referenced from: _main in ccNvkS6f.o ld: symbol(s) not found for architecture x86_64 collect2: error: ld returned 1 exit status pb-d-128-141-128-171 ~ > clang++ -std=c++11 test.cpp pb-d-128-141-128-171 ~ > My guess is this is just another facet of the libstdc++ versus libc++ runtime saga, and the removal of libstdc++ in OSX 10.9. Enabling c++11 support is expected to make this issue more pronounced, as I understand it, to my limit knowledge. Chris On 7 Nov 2013, at 10:00pm, Ryan Schmidt <[email protected]> wrote: > > On Nov 6, 2013, at 15:27, Brian D. McGrew wrote: > >> I’m getting an undefined symbol for isalnum and isgraph using g++-mp-4.8. > > By doing what, specifically? > > I can attempt to reproduce the issue on my system for you, but I am not a C > or C++ programmer, so assume I know nothing. What should I do to reproduce > the issue? For example, you showed some code, but did not say what filename > to save it into or what command to then run on the command line to produce > the error message. I’ve tried a few things but I’ve received different error > messages than you so I won’t bother mentioning what I tried and I’ll wait for > you to tell me what I should try. > > > _______________________________________________ > macports-users mailing list > [email protected] > https://lists.macosforge.org/mailman/listinfo/macports-users
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