[tor-bugs] #21038 [Core Tor/Tor]: configure step and "implicit-function-declaration"

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#21038: configure step and "implicit-function-declaration"
------------------------------+--------------------------------
     Reporter:  toralf        |      Owner:
         Type:  task          |     Status:  new
     Priority:  Medium        |  Milestone:
    Component:  Core Tor/Tor  |    Version:  Tor: 0.3.0.1-alpha
     Severity:  Minor         |   Keywords:
Actual Points:                |  Parent ID:
       Points:                |   Reviewer:
      Sponsor:                |
------------------------------+--------------------------------
 This breaks :
 {{{
 ./configure CFLAGS="-O2 -pipe -march=native -Werror=implicit-function-
 declaration"
 ...
 checking for pthread_create... yes
 checking for pthread_condattr_setclock... yes
 checking for libevent directory... configure: WARNING: We found the
 libraries for libevent, but we could not find the C header files.  You may
 need to install a devel package.
 configure: error: Missing headers; unable to proceed.
 }}}
 but neither this :
 {{{
 ./configure --enable-gcc-warnings
 }}}
 nor this
 {{{
 ./configure CFLAGS="-O2 -pipe -march=native" --enable-gcc-warnings
 }}}
 Shouldn't the later break too ?

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Ticket URL: <https://trac.torproject.org/projects/tor/ticket/21038>
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