[tor-bugs] #26459 [Core Tor/Tor]: netinet/tcp.h autoconf test is missing u_int32_t on cygwin

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#26459: netinet/tcp.h autoconf test is missing u_int32_t on cygwin
------------------------------+------------------------------
     Reporter:  teor          |      Owner:  (none)
         Type:  defect        |     Status:  new
     Priority:  Low           |  Milestone:  Tor: unspecified
    Component:  Core Tor/Tor  |    Version:
     Severity:  Minor         |   Keywords:
Actual Points:                |  Parent ID:  #26356
       Points:                |   Reviewer:
      Sponsor:                |
------------------------------+------------------------------
 I think we need to add sys/types.h on Cygwin, and maybe BSD/macOS as well.
 But if this configure test is only for KIST, and KIST only works on Linux,
 maybe we don't need to fix this issue.

 {{{
 configure:9774: checking for struct tcp_info.tcpi_unacked
 configure:9774: gcc -c -g -O2   -I${top_srcdir}/src/common conftest.c >&5
 In file included from conftest.c:77:
 /usr/include/netinet/tcp.h:42:9: error: unknown type name 'u_int32_t'
  typedef u_int32_t tcp_seq;
          ^~~~~~~~~

 (similar errors)

 configure:9774: $? = 1
 configure: failed program was:
 | /* confdefs.h */
 | #define PACKAGE_NAME "tor"
 | #define PACKAGE_TARNAME "tor"
 | #define PACKAGE_VERSION "0.3.3.7"

 (similar macros)

 | #define STDC_HEADERS 1
 | #define HAVE_SYS_TYPES_H 1

 (similar macros)

 | /* end confdefs.h.  */
 | #include <netinet/tcp.h>
 |
 | int
 | main ()
 | {
 | static struct tcp_info ac_aggr;
 | if (ac_aggr.tcpi_unacked)
 | return 0;
 |   ;
 |   return 0;
 | }
 }}}

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/26459>
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