* John Steele Scott ([email protected]) wrote: > http://lists.lttng.org/pipermail/lttng-dev/2012-May/017927.html > > I tried to build the latest urcu (git master e51500) on a Centos 6.2 box, and > got: > > jscott@dxi0-62:~/src/userspace-rcu$ make -j4 > CDPATH="${ZSH_VERSION+.}:" && cd . && /bin/sh > /users/jscott/src/userspace-rcu/config/missing --run aclocal-1.11 -I config > CDPATH="${ZSH_VERSION+.}:" && cd . && /bin/sh > /users/jscott/src/userspace-rcu/config/missing --run autoconf > cd . && /bin/sh /users/jscott/src/userspace-rcu/config/missing --run > automake-1.11 --foreign > configure:4010: error: possibly undefined macro: m4_ifnblank > If this token and others are legitimate, please use m4_pattern_allow. > See the Autoconf documentation. > make: *** [configure] Error 1 > make: *** Waiting for unfinished jobs.... > > Some digging showed that the macro m4_ifnblank requires autoconf 2.64. Centos > 6.2 has autoconf 2.63. :( > > I just worked around it by reverting commit a767fd locally, then I can build > fine.
Thanks for pointing this out! Can you try the following patch and let me know if it fixes your issue ? diff --git a/config/ax_tls.m4 b/config/ax_tls.m4 index 033e3b1..5ab1a41 100644 --- a/config/ax_tls.m4 +++ b/config/ax_tls.m4 @@ -44,7 +44,23 @@ # modified version of the Autoconf Macro, you may extend this special # exception to the GPL to apply to your modified version as well. -#serial 10 +#serial 11 + +# Define m4_ifblank and m4_ifnblank macros from introduced in +# autotools 2.64 m4sugar.m4 if using an earlier autotools. + +ifdef([m4_ifblank], [], [ +m4_define([m4_ifblank], +[m4_if(m4_translit([[$1]], [ ][ ][ +]), [], [$2], [$3])]) +]) + + +ifdef([m4_ifnblank], [], [ +m4_define([m4_ifnblank], +[m4_if(m4_translit([[$1]], [ ][ ][ +]), [], [$3], [$2])]) +]) AC_DEFUN([AX_TLS], [ AC_MSG_CHECKING(for thread local storage (TLS) class) -- Mathieu Desnoyers Operating System Efficiency R&D Consultant EfficiOS Inc. http://www.efficios.com _______________________________________________ lttng-dev mailing list [email protected] http://lists.lttng.org/cgi-bin/mailman/listinfo/lttng-dev
