diff --git a/modules/ksb/Application.pm b/modules/ksb/Application.pm
--- a/modules/ksb/Application.pm
+++ b/modules/ksb/Application.pm
@@ -2442,7 +2442,8 @@
         if (!$programPath) {
             # Don't complain about Qt if we're building it...
             if ($prog eq 'qmake' && (
-                    grep { $_->buildSystemType() eq 'Qt' } (@buildModules)) ||
+                    grep { $_->buildSystemType() eq 'Qt' ||
+                           $_->buildSystemType() eq 'Qt5' } (@buildModules)) ||
                     pretending()
                 )
             {
diff --git a/modules/ksb/Module.pm b/modules/ksb/Module.pm
--- a/modules/ksb/Module.pm
+++ b/modules/ksb/Module.pm
@@ -642,11 +642,24 @@
     my $self = assert_isa(shift, 'ksb::Module');
     my $ctx = $self->buildContext();
     my $kdedir = $self->getOption('kdedir');
+    my $qtdir = $self->getOption('qtdir');
     my $prefix = $self->installationPath();
 
     # Add global set-envs and context
     $self->buildContext()->applyUserEnvironment();
 
+    # Avoid moving /usr up in env vars
+    if ($qtdir ne '/usr') {
+        my @qt_pkg_config_dirs = ("$qtdir/lib/pkgconfig");
+        $ctx->prependEnvironmentValue('PKG_CONFIG_PATH', @qt_pkg_config_dirs);
+
+        my @qt_ld_dirs = ("$qtdir/lib");
+        $ctx->prependEnvironmentValue('LD_LIBRARY_PATH', @qt_ld_dirs);
+
+        my @qt_path = ("$qtdir/bin");
+        $ctx->prependEnvironmentValue('PATH', @qt_path);
+    }
+
     # Avoid moving /usr up in env vars
     if ($kdedir ne '/usr') {
         my @pkg_config_dirs = ("$kdedir/lib/pkgconfig");