introducing protection to prevent multiple target declaration for uninstall.

fe-dagostino · kjellahl · commit 9fc3416a95ab · 2023-01-21T09:55:24.000+01:00
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -65,14 +65,15 @@ set (top_srcdir .)
 configure_file (sigc++.pc.in sigc++-${SIGCXX_API_VERSION}.pc @ONLY)
 configure_file (sigc++-uninstalled.pc.in sigc++-${SIGCXX_API_VERSION}-uninstalled.pc @ONLY)
 
+if (NOT TARGET uninstall)
 configure_file(
 	"${CMAKE_CURRENT_SOURCE_DIR}/cmake_uninstall.cmake.in"
 	"${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake"
  	IMMEDIATE @ONLY)
 
 add_custom_target(uninstall
 	COMMAND ${CMAKE_COMMAND} -P ${CMAKE_CURRENT_BINARY_DIR}/cmake_uninstall.cmake)
-
+endif()
 
 install (FILES
 			"${CMAKE_CURRENT_BINARY_DIR}/sigc++config.h"
