- PANDORA_SHARED_PTR
- m4_if(PCT_IGNORE_SHARED_PTR, [no], [
- AS_IF([test "$ac_cv_shared_ptr_namespace" = "missing"],[
- AC_MSG_WARN([a usable shared_ptr implementation was not found. Let someone know what your platform is.])
- ])
- ])
-
- m4_if(PCT_USE_GNULIB, [yes], [
+ m4_if(m4_substr(m4_esyscmd(test -d gnulib && echo 0),0,1),0,[