diff --git a/bin/qrintf b/bin/qrintf
index 1a51dc0..c94020d 100755
--- a/bin/qrintf
+++ b/bin/qrintf
@@ -33,7 +33,7 @@ $tempfn =~ s{\.c(.*)$}{.i@{[$1 ? 'i' : '']}}s
 $tempfn = "$tempdir/$tempfn";
 
 # invoke cpp
-open(my $fh, "-|", $cc, '-E', (grep { $_ ne '-c' } @cflags), '-DQRINTF=1', '-include', "$pwd/../share/qrintf/qrintf.h", $fn)
+open(my $fh, "-|", $cc, '-E', (grep { $_ ne '-c' } @cflags), '-DQRINTF=1', '-include', "$pwd/../include/qrintf.h", $fn)
     or die "failed to invoke $cc -E:$!";
 my $src = do { local $/; <$fh> };
 close $fh
diff --git a/share/qrintf/qrintf.h b/include/qrintf.h
similarity index 99%
rename from share/qrintf/qrintf.h
rename to include/qrintf.h
index 2260936..3bf48ba 100644
--- a/share/qrintf/qrintf.h
+++ b/include/qrintf.h
@@ -20,8 +20,17 @@
  * FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS
  * IN THE SOFTWARE.
  */
-#ifndef qrintf_h
-#define qrintf_h
+#if !defined(QRINTF_INCLUDE_COUNT)
+# define QRINTF_INCLUDE_COUNT 1
+#elif QRINTF_INCLUDE_COUNT==1
+# undef QRINTF_INCLUDE_COUNT
+# define QRINTF_INCLUDE_COUNT 2
+#elif QRINTF_INCLUDE_COUNT==2
+# undef QRINTF_INCLUDE_COUNT
+# define QRINTF_INCLUDE_COUNT 3
+#endif
+
+#if (!defined(QRINTF_NO_AUTO_INCLUDE) && QRINTF_INCLUDE_COUNT==1) || (defined(QRINTF_NO_AUTO_INCLUDE) && QRINTF_INCLUDE_COUNT==2)
 
 #ifdef __cplusplus
 extern "C" {