CPPFLAGS="$CPPFLAGS $PCRE_INCLUDES"
AC_EGREP_CPP(yes,
[
+#ifdef HAVE_PCRE2
+yes
+#else
#include <pcre.h>
#ifdef PCRE_DUPNAMES
yes
#endif
+#endif
],pcre_have_dupnames=yes,pcre_have_dupnames=no)
if test "$pcre_have_dupnames" != "yes"; then
AC_MSG_ERROR([pcre version does not support PCRE_DUPNAMES])