BUG: the dependency analysis would incorrectly alphabetically re-order the

link lines, which affects external libraries pulled up from deep within
the dependency tree. Fixed by preserving order everywhere.

1 files changed, 36 insertions, 0 deletions

diff --git a/Tests/LinkLineOrder/CMakeLists.txt b/Tests/LinkLineOrder/CMakeLists.txt
new file mode 100644
index 0000000..21a5022
--- /dev/null
+++ b/Tests/LinkLineOrder/CMakeLists.txt
@@ -0,0 +1,36 @@
+PROJECT( LinkLineOrder )
+
+# This tests ensures that the order of libraries are preserved when
+# they don't have dependency information, even if they are deep in the
+# dependency tree.
+
+# NoDepC depends on NoDepA which depends on NoDepB. NoDepE and NoDepF
+# are dependent on each other (recursive dependency). However, CMake
+# has no information about these libraries except for the order they
+# are specified in One. We must make sure we don't lose that.
+
+ADD_LIBRARY( NoDepA NoDepA.c )
+ADD_LIBRARY( NoDepB NoDepB.c )
+ADD_LIBRARY( NoDepC NoDepC.c )
+ADD_LIBRARY( NoDepE NoDepE.c )
+ADD_LIBRARY( NoDepF NoDepF.c )
+
+ADD_LIBRARY( One One.c )
+TARGET_LINK_LIBRARIES( One NoDepC NoDepA NoDepB NoDepE NoDepF NoDepE )
+
+ADD_EXECUTABLE( Exec1 Exec1.c )
+TARGET_LINK_LIBRARIES( Exec1 One )
+
+
+# Similar situation as One, except at a different level of the
+# dependency tree. This makes sure that the order is presevered
+# everywhere in the graph.
+ADD_LIBRARY( NoDepX NoDepX.c )
+ADD_LIBRARY( NoDepY NoDepY.c )
+ADD_LIBRARY( NoDepZ NoDepZ.c )
+
+ADD_LIBRARY( Two Two.c )
+TARGET_LINK_LIBRARIES( Two One NoDepZ NoDepX NoDepY )
+
+ADD_EXECUTABLE( Exec2 Exec2.c )
+TARGET_LINK_LIBRARIES( Exec2 Two )