Fix super build (e.g. FetchContent) integration

coin-or · Jul 1, 2020 · f796d57 · f796d57
1 parent f9aef46
commit f796d57
Showing 1 changed file with 8 additions and 3 deletions.
diff --git a/CMakeLists.txt b/CMakeLists.txt
@@ -45,8 +45,11 @@ if(APPLE)
 endif(APPLE)
 
 # ZLIB
-find_package(ZLIB)
-if(ZLIB_FOUND)
+if(NOT TARGET ZLIB::ZLIB)
+  find_package(ZLIB)
+endif()
+if(ZLIB_FOUND OR TARGET ZLIB::ZLIB)
+  message("Use zlib")
   set(HAVE_ZLIB_H "1" CACHE INTERNAL "Use zlib")
   set(COIN_HAS_ZLIB "1" CACHE INTERNAL "Use zlib")
 endif()
@@ -61,7 +64,9 @@ else()
 endif()
 
 # CoinUtils
-find_package(CoinUtils REQUIRED CONFIG)
+if(NOT TARGET Coin::CoinUtils)
+  find_package(CoinUtils REQUIRED CONFIG)
+endif()
 
 include(CheckEnv)
 include(CTest)