[tor-bugs] #17551 [Tor]: net/pfvar.h is not properly detected on OpenBSD

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#17551: net/pfvar.h is not properly detected on OpenBSD
-------------------------+-----------------
     Reporter:  rubiate  |      Owner:
         Type:  defect   |     Status:  new
     Priority:  Medium   |  Milestone:
    Component:  Tor      |    Version:
     Severity:  Normal   |   Keywords:
Actual Points:           |  Parent ID:
       Points:           |    Sponsor:
-------------------------+-----------------
 The autoconf test for net/pfvar.h is missing a header to have the test
 successfully detect it:

 {{{
     configure:9992: checking for net/pfvar.h
     configure:9992: gcc -std=gnu99 -c -g -O2 -D_FORTIFY_SOURCE=2 -fstack-
 protector-all -Wstack-protector -fwrapv --param ssp-buffer-size=1 -fPIE
 -fasynchronous-unwind-tables  -I${top_srcdir}/src/common conftest.c >&5
     In file included from conftest.c:111:
     /usr/include/net/pfvar.h:132: error: field 'v4' has incomplete type
     /usr/include/net/pfvar.h:133: error: field 'v6' has incomplete type
     /usr/include/net/pfvar.h:947: error: field '_pfra_ip4addr' has
 incomplete type
     /usr/include/net/pfvar.h:948: error: field '_pfra_ip6addr' has
 incomplete type
     /usr/include/net/pfvar.h:1002: error: field 'sin' has incomplete type
     /usr/include/net/pfvar.h:1003: error: field 'sin6' has incomplete type
     configure:9992: $? = 1
     configure: failed program was:
     ...
 }}}

 It needs netinet/in.h

 This is not problem for the port/package as the OpenBSD ports tree
 infrastructure pre-defines a bunch of variables for headers that it knows
 exist, including $ac_cv_header_net_pfvar_h, so autoconf uses the cached
 result there, however it's a problem if manually building from source and
 not from ports.

 As a bonus, the `OPENBSD` pre-processor macro is only defined if
 transparent proxy support is enabled, which it isn't when net/pfvar.h
 can't be detected (the malloc.h warnings was what made me look into this
 :-) )

--
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/17551>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
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