Pointed out by: Doug Winterburn <dlw@seavme.xroads.com>

3) Add "#include "config.h" to src/interfaces/ecpg/preproc/pgc.l
   to correct "strings.h not found".  config.h has the proper define to
   make this work and should probably be near the top of pgc.l before
   the first include.

src/interfaces/ecpg/preproc/pgc.l

 /* Copyright comment! */
 %{
+#include "config.h"
 #include <sys/types.h>
 #include <limits.h>
 #if defined(HAVE_STRING_H)