- forbid CONAN_PKG and CONAN_LIBS

hooks/conan-center.py

@@ -70,6 +70,7 @@
              "KB-H064": "INVALID TOPICS",
              "KB-H065": "NO REQUIRED_CONAN_VERSION",
              "KB-H066": "SHORT_PATHS USAGE",
+             "KB-H067": "OLD TARGETS",
              }
 
 
@@ -763,6 +764,26 @@ def _find_required_conan_version(conanfile_content):
                      "Please add `required_conan_version >= \"{0}\"`"
                      "".format(str(required_version)))
 
+    @run_test("KB-H065", output)
+    def test(out):
+
+        def check_old_integrations(cmakelists_path):
+            cmake_content = tools.load(cmakelists_path)
+            if "CONAN_PKG::" in cmake_content:
+                out.error("The usage of CONAN_PKG:: targets in {} is deprecated and will not be supported "
+                          "in future (conan 2.0). Replace these targets with ones provided by the "
+                          "cmake_find_package_multi generator.".format(os.path.relpath(cmakelists_path)))
+            if "CONAN_LIBS" in cmake_content:
+                out.error("The usage of CONAN_LIBS in {} is deprecated and will not be supported "
+                          "in future (conan 2.0). Replace these variables with targets provided by the "
+                          "cmake_find_package_multi generator.".format(os.path.relpath(cmakelists_path)))
+
+        dir_path = os.path.dirname(conanfile_path)
+        for cmake_path in [os.path.join(dir_path, "CMakeLists.txt"),
+                           os.path.join(dir_path, "test_package", "CMakeLists.txt")]:
+            if os.path.exists(cmake_path):
+                check_old_integrations(cmake_path)
+
 
 @raise_if_error_output
 def post_export(output, conanfile, conanfile_path, reference, **kwargs):

tests/test_hooks/conan-center/test_conan-center.py

@@ -1118,6 +1118,37 @@ def source(self):
         output = self.conan(['export', 'conanfile.py', 'name/version@user/test'])
         self.assertIn("WARN: [TOOLS CROSS BUILDING (KB-H062)] The 'tools.cross_building(self.settings)' syntax in conanfile.py",output)
 
+    def test_old_targets(self):
+        conanfile = self.conanfile_base.format(placeholder="exports_sources = \"CMakeLists.txt\"")
+
+        cmake = textwrap.dedent("""
+                cmake_minimum_required(VERSION 2.8.11)
+                project(test)
+                """)
+        tools.save('conanfile.py', content=conanfile)
+        tools.save('CMakeLists.txt', content=cmake)
+        output = self.conan(['create', '.', 'name/version@user/test'])
+        self.assertIn("[OLD TARGETS (KB-H065)] OK", output)
+
+        cmake = textwrap.dedent("""
+                cmake_minimum_required(VERSION 2.8.11)
+                project(test)
+                message(STATUS "CONAN_LIBS ${CONAN_LIBS})
+                """)
+        tools.save('CMakeLists.txt', content=cmake)
+        output = self.conan(['create', '.', 'name/version@user/test'])
+        self.assertIn("ERROR: [OLD TARGETS (KB-H065)]", output)
+
+        cmake = textwrap.dedent("""
+                cmake_minimum_required(VERSION 2.8.11)
+                project(test)
+                if(TARGET CONAN_PKG::boost)
+                endif()
+                """)
+        tools.save('CMakeLists.txt', content=cmake)
+        output = self.conan(['create', '.', 'name/version@user/test'])
+        self.assertIn("ERROR: [OLD TARGETS (KB-H065)]", output)
+
     def test_strip_root_required_conan_version(self):
         # no required_conan_version
         conanfile = textwrap.dedent("""\