diff --git a/src/libecoprimer/strictprimers.c b/src/libecoprimer/strictprimers.c
index 5a1eaaa..d54bde7 100644
--- a/src/libecoprimer/strictprimers.c
+++ b/src/libecoprimer/strictprimers.c
@@ -5,14 +5,18 @@
  *      Author: coissac
  */
 
+#define _GNU_SOURCE
 #include "ecoprimer.h"
 #include <string.h>
 #include <math.h>
 #include <sys/resource.h>
 #include <unistd.h>
+#include <stdio.h>
 
+#ifndef RUSAGE_SELF
 #define   RUSAGE_SELF     0
 #define   RUSAGE_CHILDREN     -1
+#endif
 
 static double timeval_subtract (struct timeval *x, struct timeval *y);
 
@@ -187,7 +191,8 @@ pwordcount_t lookforStrictPrimer(pecodnadb_t database, uint32_t seqdbsize,
     			seconde = timeval_subtract(&(usage.ru_utime),&(start.ru_utime)) +
     			          timeval_subtract(&(usage.ru_stime),&(start.ru_stime));
     			fprintf(logfile,"%d\t%llu\t%lu\t%8.3f\t%8.3e\n",i,
-    					totallength,strictprimers->size*sizeof(int64_t),
+    					(long long unsigned)totallength,
+					strictprimers->size*sizeof(int64_t),
     					seconde,seconde/(double)totallength);
     			fclose(logfile);
     		}
@@ -195,7 +200,9 @@ pwordcount_t lookforStrictPrimer(pecodnadb_t database, uint32_t seqdbsize,
     	else
     		strictprimers->outseqcount++;
 
-    	fprintf(stderr,"  Indexed sequences %5d/%5d  : considered words %-10d  \r",(int32_t)i+1,(int32_t)seqdbsize,strictprimers->size);
+    	fprintf(stderr,"  Indexed sequences %5d/%5d  : considered words %-10llu  \r",
+				(int32_t)i+1,(int32_t)seqdbsize,
+				(long long unsigned)strictprimers->size);
 
 //    	DEBUG_LOG("First  word : %s ==> %d",ecoUnhashWord(strictprimers->words[0],18),strictprimers->incount[0])
 //    	DEBUG_LOG("Second word : %s ==> %d",ecoUnhashWord(strictprimers->words[1],18),strictprimers->incount[1])