diff --git a/unix/configure b/unix/configure
index d22d2f5..f2e682d 100644
--- a/unix/configure
+++ b/unix/configure
@@ -507,55 +507,60 @@ $CC $CFLAGS -c conftest.c >/dev/null 2>/dev/null
 
 for func in rmdir strchr strrchr rename mktemp mktime mkstemp
 do
-  echo Check for $func
+  printf "Check for %s ... " "$func"
   echo "int main(){ $func(); return 0; }" > conftest.c
-  $CC $BFLAG -o conftest conftest.c >/dev/null 2>/dev/null
-  [ $? -ne 0 ] && CFLAGS="${CFLAGS} -DNO_`echo $func | tr '[a-z]' '[A-Z]'`"
+  $CC $BFLAG -o conftest -Wno-implicit-function-declaration conftest.c #>/dev/null 2>/dev/null
+  [ $? -ne 0 ] && CFLAGS="${CFLAGS} -DNO_`echo $func | tr '[a-z]' '[A-Z]'`" && echo no || echo yes
 done
 
 
-echo Check for memset
-echo "int main(){ char k; memset(&k,0,0); return 0; }" > conftest.c
-$CC -o conftest conftest.c >/dev/null 2>/dev/null
-[ $? -ne 0 ] && CFLAGS="${CFLAGS} -DZMEM"
+printf "Check for memset ... "
+cat > conftest.c << _EOF_
+#include <string.h>
+int main(){ char k; memset(&k,0,0); return 0; }
+_EOF_
+$CC -o conftest conftest.c #>/dev/null 2>/dev/null
+[ $? -ne 0 ] && CFLAGS="${CFLAGS} -DZMEM" && echo no || echo yes
 
 
-echo Check for memmove
+printf "Check for memmove ... "
 cat > conftest.c << _EOF_
 #include <string.h>
 int main() { int a; int b = 0; memmove( &a, &b, sizeof( a)); return a; }
 _EOF_
 $CC -o conftest conftest.c >/dev/null 2>/dev/null
-[ $? -ne 0 ] && CFLAGS="${CFLAGS} -DNEED_MEMMOVE"
+[ $? -ne 0 ] && CFLAGS="${CFLAGS} -DNEED_MEMMOVE" && echo no || echo yes
 
 
-echo Check for strerror
+printf "Check for strerror ... "
 cat > conftest.c << _EOF_
 #include <string.h>
 int main() { strerror( 0); return 0; }
 _EOF_
 $CC -o conftest conftest.c >/dev/null 2>/dev/null
-[ $? -ne 0 ] && CFLAGS="${CFLAGS} -DNEED_STRERROR"
+[ $? -ne 0 ] && CFLAGS="${CFLAGS} -DNEED_STRERROR" && echo no || echo yes
 
-echo Check for errno declaration
+printf "Check for errno declaration ... "
 cat > conftest.c << _EOF_
 #include <errno.h>
-main()
+int main()
 {
   errno = 0;
   return 0;
 }
 _EOF_
-$CC $CFLAGS -c conftest.c >/dev/null 2>/dev/null
-[ $? -ne 0 ] && CFLAGS="${CFLAGS} -DNO_ERRNO"
+$CC $CFLAGS -c conftest.c #>/dev/null 2>/dev/null
+[ $? -ne 0 ] && CFLAGS="${CFLAGS} -DNO_ERRNO" && echo no || echo yes
 
 
-echo Check for directory libraries
+printf "Check for directory libraries ... "
 cat > conftest.c << _EOF_
+#include <sys/types.h>
+#include <dirent.h>
 int main() { return closedir(opendir(".")); }
 _EOF_
 
-$CC -o conftest conftest.c >/dev/null 2>/dev/null
+$CC -o conftest conftest.c && echo "none" #>/dev/null 2>/dev/null
 if [ $? -ne 0 ]; then
   OPT=""
   for lib in ndir dir ucb bsd BSD PW x dirent
@@ -565,67 +570,73 @@ if [ $? -ne 0 ]; then
   done
   if [ ${OPT} ]; then
     LFLAGS2="${LFLAGS2} ${OPT}"
+    echo "$lib"
   else
     CFLAGS="${CFLAGS} -DNO_DIR"
+    echo no
   fi
 fi
 
 
 # Dynix/ptx 1.3 needed this
 
-echo Check for readlink
-echo "int main(){ return readlink(); }" > conftest.c
-$CC -o conftest conftest.c >/dev/null 2>/dev/null
+printf "Check for readlink ... "
+cat > conftest.c << _EOF_
+#include <unistd.h>
+int main(){ return readlink(NULL, NULL, 0); }
+_EOF_
+$CC -o conftest conftest.c && echo yes
 if [ $? -ne 0 ]; then
   $CC -o conftest conftest.c -lseq >/dev/null 2>/dev/null
-  [ $? -eq 0 ] && LFLAGS2="${LFLAGS2} -lseq"
+  [ $? -eq 0 ] && LFLAGS2="${LFLAGS2} -lseq" && echo yes || echo no
 fi
 
 
-echo Check for directory include file
+printf "Check for directory include file ... "
 OPT=""
 for inc in dirent.h sys/ndir.h ndir.h sys/dir.h
 do
    echo "#include <$inc>" > conftest.c
    $CPP conftest.c > /dev/null 2>/dev/null
-   [ $? -eq 0 ] && OPT="-DHAVE_`echo $inc | tr '[a-z]./' '[A-Z]__'`" && break
+   [ $? -eq 0 ] && OPT="-DHAVE_`echo $inc | tr '[a-z]./' '[A-Z]__'`" && echo "$inc" && break
 done
 CFLAGS="${CFLAGS} ${OPT}"
 
 
-echo Check for nonexistent include files
 for inc in stdlib.h stddef.h unistd.h fcntl.h string.h
 do
+  printf "Check for <%s> ... " "$inc"
    echo "#include <$inc>" > conftest.c
    $CPP conftest.c >/dev/null 2>/dev/null
-   [ $? -ne 0 ] && CFLAGS="${CFLAGS} -DNO_`echo $inc | tr '[a-z]./' '[A-Z]__'`"
+   [ $? -ne 0 ] && CFLAGS="${CFLAGS} -DNO_`echo $inc | tr '[a-z]./' '[A-Z]__'`" && echno no || echo yes
 done
 
-
-echo Check for term I/O include file
+printf "Check for term I/O include file ... "
 OPT=""
 for inc in termios.h termio.h sgtty.h
 do
    echo "#include <$inc>" > conftest.c
    $CPP conftest.c > /dev/null 2>/dev/null
-   [ $? -eq 0 ] && OPT="-DHAVE_`echo $inc | tr '[a-z]./' '[A-Z]__'`" && break
+   [ $? -eq 0 ] && OPT="-DHAVE_`echo $inc | tr '[a-z]./' '[A-Z]__'`" && echo "$inc" && break
 done
 CFLAGS="${CFLAGS} ${OPT}"
 
 
 # needed for AIX (and others ?) when mmap is used
 
-echo Check for valloc
+printf "Check for valloc ... "
 cat > conftest.c << _EOF_
-main()
+#include <unistd.h>
+int main()
 {
 #ifdef MMAP
     valloc();
 #endif
+return 0;
 }
 _EOF_
-$CC ${CFLAGS} -c conftest.c > /dev/null 2>/dev/null
-[ $? -ne 0 ] && CFLAGS="${CFLAGS} -DNO_VALLOC"
+$CC ${CFLAGS} -c conftest.c #> /dev/null 2>/dev/null
+[ $? -ne 0 ] && CFLAGS="${CFLAGS} -DNO_VALLOC" && echo no || echo yes
 
 
 echo Check for /usr/local/bin and /usr/local/man