On 12/21/12 06:02, Eric Blake wrote: > But that gives me an idea for a simpler solution that DOES work with 2.59:
Thanks for the bug report and suggestion -- I pushed this: --- a/ChangeLog +++ b/ChangeLog @@ -1,3 +1,13 @@ +2012-12-21 Paul Eggert <egg...@cs.ucla.edu> + + AC_PROG_MKDIR_P: port workaround to pre-2.62 Autoconf + * m4/gnulib-common.m4 (AC_PROG_MKDIR_P, AC_C_RESTRICT): + Use m4_ifndef([AC_AUTOCONF_VERSION], ...), not + m4_if(m4_version_compare(m4_defn([AC_AUTOCONF_VERSION]),[2.62]),[-1], + ...), as the latter is fatal with older Autoconfs. + Problem reported and fix suggested by Eric Blake in thread starting at + <http://lists.gnu.org/archive/html/bug-gnulib/2012-12/msg00097.html>. + 2012-12-20 Paul Eggert <egg...@cs.ucla.edu> AC_PROG_MKDIR_P: don't workaround if not buggy diff --git a/m4/gnulib-common.m4 b/m4/gnulib-common.m4 index 01796bd..f3ba8d5 100644 --- a/m4/gnulib-common.m4 +++ b/m4/gnulib-common.m4 @@ -294,7 +294,8 @@ Amsterdam # for interoperability with automake-1.9.6 from autoconf-2.62. # Remove this macro when we can assume autoconf >= 2.62 or # autoconf >= 2.60 && automake >= 1.10. -m4_if(m4_version_compare(m4_defn([AC_AUTOCONF_VERSION]),[2.62]),[-1],[ +# AC_AUTOCONF_VERSION was introduced in 2.62, so use that as the witness. +m4_ifndef([AC_AUTOCONF_VERSION],[ m4_ifdef([AC_PROG_MKDIR_P], [ dnl For automake-1.9.6 && autoconf < 2.62: Ensure MKDIR_P is AC_SUBSTed. m4_define([AC_PROG_MKDIR_P], @@ -312,7 +313,8 @@ m4_ifdef([AC_PROG_MKDIR_P], [ # so that mixed use of GNU C and GNU C++ and mixed use of Sun C and Sun C++ # works. # This definition can be removed once autoconf >= 2.62 can be assumed. -m4_if(m4_version_compare(m4_defn([AC_AUTOCONF_VERSION]),[2.62]),[-1],[ +# AC_AUTOCONF_VERSION was introduced in 2.62, so use that as the witness. +m4_ifndef([AC_AUTOCONF_VERSION],[ AC_DEFUN([AC_C_RESTRICT], [AC_CACHE_CHECK([for C/C++ restrict keyword], [ac_cv_c_restrict], [ac_cv_c_restrict=no -- 1.7.11.7
