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Re: [tor-bugs] #9869 [Tor]: configure runs tests with wrong tools for --host if suitable tools are not in $PATH (was: build process with --host=arm-unknown-linux-gnueabihf tries to compile curve25519-donna-c64.c)



#9869: configure runs tests with wrong tools for --host if suitable tools are not
in $PATH
-------------------------+-------------------------------------------------
     Reporter:  sqrt2    |      Owner:
         Type:  defect   |     Status:  closed
     Priority:  normal   |  Milestone:  Tor: 0.2.5.x-final
    Component:  Tor      |    Version:  Tor: unspecified
   Resolution:           |   Keywords:  armv6 curve25519 build tor-relay
  worksforme             |  024-backport
Actual Points:           |  Parent ID:
       Points:           |
-------------------------+-------------------------------------------------
Changes (by sqrt2):

 * status:  new => closed
 * resolution:   => worksforme


Comment:

 I've taken a closer look at my config.log now and it appears that I didn't
 have the correct (cross) compiler in $PATH at the time of running
 configure, and my native compiler was used instead. This defeats the
 purpose of --host.

 It appears AC_PROG_CC does not care about not finding arm-unknown-linux-
 gnueabihf-gcc as long as it finds ''a'' gcc, nor do the other AC_PROG_*
 macros.

 Similarly, configure.ac defines a macro AC_PROG_AR with the comment

 > dnl check for the correct "ar" when cross-compiling

 but this is not actually the case. It will accept ''any'' ar in $PATH
 because AC_CHECK_TOOL apparently behaves this way.

 This is all very strange.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/9869#comment:4>
Tor Bug Tracker & Wiki <https://trac.torproject.org/>
The Tor Project: anonymity online
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