[tor-bugs] #20530 [Core Tor/Tor]: undefined reference to 'munmap' and 'mmap' building tor on Windows

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#20530: undefined reference to 'munmap' and 'mmap' building tor on Windows
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 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:
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Comment (by teor):

 Ok, your configure output says:
 {{{
 checking sys/mman.h usability... yes
 checking sys/mman.h presence... yes
 checking for sys/mman.h... yes
 }}}
 https://trac.torproject.org/projects/tor/attachment/ticket/20530
 /configure-output.txt#L264

 This is why HAVE_SYS_MMAN_H gets redefined in orconfig.h every time you
 run configure.
 (If the header did not exist, tor would not try to use the functions in
 it.)

 If you want to try rebuilding without HAVE_SYS_MMAN_H:
 Disable it in orconfig.h and then '''do not run configure,''' just run
 make.
 If this works, we can fix the order of the alternatives in compat.c so
 that we check for WIN32 first, then HAVE_SYS_MMAN_H.

 If you want to try rebuilding with HAVE_SYS_MMAN_H:
 What are the contents of sys/mman.h on your machine?
 Does it contain mmap, munmap, or getpagesize?

 If you want to try building with dlmalloc, that could be a bit harder.
 Do you have dlmalloc installed? dlmalloc.c or dlmalloc.h?

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/20530#comment:4>
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