[tor-bugs] #4768 [Obfsproxy]: obfsproxy: support autoconf 2.59

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#4768: obfsproxy: support autoconf 2.59
-----------------------+----------------------------------------------------
 Reporter:  twilde     |          Owner:  asn
     Type:  defect     |         Status:  new
 Priority:  normal     |      Milestone:     
Component:  Obfsproxy  |        Version:     
 Keywords:             |         Parent:     
   Points:             |   Actualpoints:     
-----------------------+----------------------------------------------------

Comment(by asn):

 I downloaded autoconf `2.59` and `2.61` from
 http://ftp.gnu.org/gnu/autoconf/. These are the results from a grep for
 `AC_PROG_SED`:

 {{{
 autoconf-2.61$ grep -R PROG_SED *
 ChangeLog:      AC_PROG_SED.  Move descriptions of limitations
 ChangeLog:      * lib/autoconf/programs.m4 (AC_PROG_SED): Catch script
 length
 ChangeLog:      * configure.ac: Call AC_PROG_EGREP and AC_PROG_SED.
 ChangeLog:      * lib/autoconf/programs.m4 (AC_PROG_SED): Don't look in
 ChangeLog:      (AC_PROG_SED): Ditto bogus PATH fix.
 ChangeLog:      _AC_PROG_GREP, and AC_PROG_SED.
 ChangeLog:      (AC_PROG_SED): Use it.
 ChangeLog:      * lib/autoconf/programs.m4 (AC_PROG_SED): Use diff, not
 sed;
 ChangeLog:      * lib/autoconf/programs.m4 (AC_PROG_SED):  New macro to
 test for a
 ChangeLog.2:    * acspecific.m4 (AC_PROG_SED): Removed.
 ChangeLog.2:    * acspecific.m4 (AC_PROG_BINSH, AC_PROG_SED): Don't quote
 the name
 configure.ac:AC_PROG_SED
 doc/autoconf.info: -- Macro: AC_PROG_SED
 doc/autoconf.info:* AC_PROG_SED:                           Particular
 Programs. (line 160)
 doc/autoconf.texi:@defmac AC_PROG_SED
 doc/autoconf.texi:@acindex{PROG_SED}
 lib/autoconf/programs.m4:# AC_PROG_SED
 lib/autoconf/programs.m4:AC_DEFUN([AC_PROG_SED],
 lib/autoconf/programs.m4:])# AC_PROG_SED
 NEWS:** AC_PROG_SED
 tests/acprograms.at:AT_CHECK_MACRO([AC_PROG_SED])
 }}}

 {{{
 autoconf-2.59$ grep -R PROG_SED *
 ChangeLog.2:    * acspecific.m4 (AC_PROG_SED): Removed.
 ChangeLog.2:    * acspecific.m4 (AC_PROG_BINSH, AC_PROG_SED): Don't quote
 the name
 }}}

 It might be the case `AC_PROG_SED` existed in an old version of autoconf,
 it was later removed, and it was later added again in `2.60`.

 I'm wondering what version of autoconf rsavoye used.

-- 
Ticket URL: <https://trac.torproject.org/projects/tor/ticket/4768#comment:3>
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