make -j2 fails because src does not depend on lib. The patch below fixes this:
diff --git a/qtermwidget.pro b/qtermwidget.pro
index 1b59cb9..7be738c 100644
--- a/qtermwidget.pro
+++ b/qtermwidget.pro
@@ -1,4 +1,4 @@
TEMPLATE = subdirs
SUBDIRS = lib src
-OPTIONS += ordered
\ No newline at end of file
+CONFIG += ordered
should be fixed in this repo:
https://gitorious.org/qtermwidget
I'm guessing that's a fork of this sf.net project? Might want to post it to qt-apps.org so others can find it: http://qt-apps.org/content/show.php/QTermWidget?content=82832
if all goes fine it will be merged to this sf.net project again. I hope so.