Thanks for the details. I pushed this patch into autoconf: AC_LANG_BOOL_COMPILE_TRY(C): port to g++ with warnings * lib/autoconf/c.m4 (AC_LANG_BOOL_COMPILE_TRY(C)): Use the array as well as setting it, to pacify g++. Reported by Werner Lemberg in <http://lists.gnu.org/archive/html/autoconf/2011-12/msg00005.html>. diff --git a/lib/autoconf/c.m4 b/lib/autoconf/c.m4 index 88785d1..0fdf9dd 100644 --- a/lib/autoconf/c.m4 +++ b/lib/autoconf/c.m4 @@ -190,7 +190,8 @@ choke me # errors with `-W error'. m4_define([AC_LANG_BOOL_COMPILE_TRY(C)], [AC_LANG_PROGRAM([$1], [static int test_array @<:@1 - 2 * !($2)@:>@; -test_array @<:@0@:>@ = 0 +test_array @<:@0@:>@ = 0; +return test_array @<:@0@:>@; ])]) _______________________________________________ Autoconf mailing list Autoconf@xxxxxxx https://lists.gnu.org/mailman/listinfo/autoconf
