From a841835eaffdb1b2cc6c93979d7717c88a3468e3 Mon Sep 17 00:00:00 2001
From: Leopold Palomo-Avellaneda <leopold.palomo@upc.edu>
Date: Tue, 12 Mar 2019 19:24:44 +0100
Subject: [PATCH] Protection against double -l

---
 cmake/catkin_package.cmake | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/cmake/catkin_package.cmake b/cmake/catkin_package.cmake
index c50ffd247..fb6b01a17 100644
--- a/cmake/catkin_package.cmake
+++ b/cmake/catkin_package.cmake
@@ -270,7 +270,9 @@ function(_catkin_package)
   catkin_filter_libraries_for_build_configuration(libraries ${PKG_CONFIG_LIBRARIES})
   foreach(library ${libraries})
     if(NOT IS_ABSOLUTE ${library})
-      set(library "-l${library}")
+      if(NOT ${library} MATCHES "^-l")
+        set(library "-l${library}")
+      endif()
     endif()
     list_append_deduplicate(PKG_CONFIG_LIBRARIES_WITH_PREFIX ${library})
   endforeach()