GCC: avoid duplicating objects in linker command line

Long command lines are especially a problem when building statically in
MXE. This commit tries to replicate the logic employed by qmake, where
before adding a new object to the command line, all of its previous
appearences get removed.

Fixes: QBS-1273
Change-Id: I51c843c4a7cfc170ed4fab30deae6c4229690dd0
Reviewed-by: Christian Kandeler <christian.kandeler@qt.io>

1 files changed, 4 insertions, 0 deletions

diff --git a/tests/auto/blackbox/tst_blackbox.h b/tests/auto/blackbox/tst_blackbox.h
index 3a66b6962..4e2755724 100644
--- a/tests/auto/blackbox/tst_blackbox.h
+++ b/tests/auto/blackbox/tst_blackbox.h
@@ -171,6 +171,8 @@ private slots:
     void lexyacc();
     void lexyaccOutputs();
     void lexyaccOutputs_data();
+    void linkerLibraryDuplicates();
+    void linkerLibraryDuplicates_data();
     void linkerScripts();
     void listProducts();
     void listPropertiesWithOuter();
@@ -249,6 +251,8 @@ private slots:
     void recursiveRenaming();
     void recursiveWildcards();
     void referenceErrorInExport();
+    void removeDuplicateLibraries_data();
+    void removeDuplicateLibraries();
     void reproducibleBuild();
     void reproducibleBuild_data();
     void require();