--- a/genemake
+++ b/genemake
@@ -1279,6 +1279,7 @@
 
 #---
 cat > `checkcompilfile` <<EOF
+ #include <string.h>
  int ether_hostton(char *para1, char *para2);
  int main(void)
  { char p1[10], p2[10];
@@ -1668,7 +1669,7 @@
  #include <pwd.h>
  #include <grp.h>
  int main(void)
- { getgrgid_r(NULL, NULL, NULL, 0, NULL);
+ { getgrgid_r(0, NULL, NULL, 0, NULL);
    return(0);
  }
 EOF