#20530: undefined reference to 'munmap' and 'mmap' building tor on Windows ----------------------------+--------------------- Reporter: ice | Owner: Type: defect | Status: new Priority: Medium | Milestone: Component: Core Tor/Tor | Version: Severity: Normal | Resolution: Keywords: windows, mingw | Actual Points: Parent ID: | Points: Reviewer: | Sponsor: ----------------------------+---------------------
Comment (by ice): Sorry I am not that familiar with trac. I attached the config-output.txt file to the comment above? Anyway. I meant to attach it here. So after reading the configure output, there is no mention of the items you listed above. I have also disabled HAVE_SYS_MMAN_H in orconfig.h and there was no change; same error as above-- after cleaning and rebuilding. The header files that mention getpagesize on my system are as follows: E:\dev\MinGW64\mingw\include\commctrl.h 142 KB C/C++ Header 2012-09-24 2:56:07 PM 2014-05-26 8:40:29 PM 2014-05-26 8:40:29 PM 1 1808 #define TBM_GETPAGESIZE (WM_USER+22) E:\dev\MinGW64\mingw\include\dbgeng.h 110 KB C/C++ Header 2012-09-24 2:56:07 PM 2014-05-26 8:40:35 PM 2014-05-26 8:40:35 PM 3 744 STDMETHOD(GetPageSize)(THIS_ PULONG Size) PURE; 846 STDMETHOD(GetPageSize)(THIS_ PULONG Size) PURE; 967 STDMETHOD(GetPageSize)(THIS_ PULONG Size) PURE; E:\dev\MinGW64\mingw\include\msrdc.h 16 KB C/C++ Header 2012-09-24 2:56:09 PM 2014-05-26 8:41:03 PM 2014-05-26 8:41:03 PM 3 261 STDMETHOD(GetPageSize)(THIS_ DWORD *pageSize) PURE; 275 #define ISimilarityTraitsMapping_GetPageSize(This,pageSize) (This)->lpVtbl->GetPageSize(This,pageSize) I don't think they are related to this, or are they? More importantly, I am not so sure about mmap and friends on Windows. I think these are linux/unix specific. On the gcc-patches mailing list[1] one can read the following. "When compiling for windows, there shouldn't be any mmap/munmap references at all. While cygwin may supply some version of these, dlmalloc defines w32mmap/w32unmap which directly calls the appropriate routines for windows when WIN32 is defined (which I believe is always the case for the mingw compiler)." On MSDN[2] there is mention of CreateFileMapping, and I think this and friends are what are used on Windows. If you take a look at the mmapmodule[3] of Python, you'll notice how on Windows that function and its associated types are the ones used in place of mmap, etc. [1] https://gcc.gnu.org/ml/gcc-patches/2009-06/msg02240.html [2] https://msdn.microsoft.com/en- us/library/windows/desktop/aa366537(v=vs.85).aspx [3] https://github.com/python-git/python/blob/master/Modules/mmapmodule.c -- Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20530#comment:3> Tor Bug Tracker & Wiki <https://trac.torproject.org/> The Tor Project: anonymity online _______________________________________________ tor-bugs mailing list tor-bugs@lists.torproject.org https://lists.torproject.org/cgi-bin/mailman/listinfo/tor-bugs