cmake: Fix handling of path seperators (fixes #7294)

mesonbuild/cmake/executor.py

@@ -69,7 +69,7 @@ class CMakeExecutor:
             self.environment.is_cross_build(),
             'CMAKE_PREFIX_PATH')
         if env_pref_path is not None:
-            env_pref_path = env_pref_path.split(os.pathsep)
+            env_pref_path = re.split(r':|;', env_pref_path)
             env_pref_path = [x for x in env_pref_path if x]  # Filter out empty strings
             if not self.prefix_paths:
                 self.prefix_paths = []

mesonbuild/dependencies/base.py

@@ -1145,12 +1145,17 @@ class CMakeDependency(ExternalDependency):
         except MesonException:
             return None
 
+        def process_paths(l: T.List[str]) -> T.Set[str]:
+            l = [x.split(':') for x in l]
+            l = [x for sublist in l for x in sublist]
+            return set(l)
+
         # Extract the variables and sanity check them
-        root_paths = set(temp_parser.get_cmake_var('MESON_FIND_ROOT_PATH'))
-        root_paths.update(set(temp_parser.get_cmake_var('MESON_CMAKE_SYSROOT')))
+        root_paths = process_paths(temp_parser.get_cmake_var('MESON_FIND_ROOT_PATH'))
+        root_paths.update(process_paths(temp_parser.get_cmake_var('MESON_CMAKE_SYSROOT')))
         root_paths = sorted(root_paths)
         root_paths = list(filter(lambda x: os.path.isdir(x), root_paths))
-        module_paths = set(temp_parser.get_cmake_var('MESON_PATHS_LIST'))
+        module_paths = process_paths(temp_parser.get_cmake_var('MESON_PATHS_LIST'))
         rooted_paths = []
         for j in [Path(x) for x in root_paths]:
             for i in [Path(x) for x in module_paths]:

test cases/linuxlike/13 cmake dependency/cmake_fake1/cmMesonTestF1Config.cmake

@@ -0,0 +1,9 @@
+find_package(ZLIB)
+
+if(ZLIB_FOUND OR ZLIB_Found)
+  set(cmMesonTestF1_FOUND        ON)
+  set(cmMesonTestF1_LIBRARIES    ${ZLIB_LIBRARY})
+  set(cmMesonTestF1_INCLUDE_DIRS ${ZLIB_INCLUDE_DIR})
+else()
+  set(cmMesonTestF1_FOUND       OFF)
+endif()

test cases/linuxlike/13 cmake dependency/cmake_fake2/cmMesonTestF2Config.cmake

@@ -0,0 +1,9 @@
+find_package(ZLIB)
+
+if(ZLIB_FOUND OR ZLIB_Found)
+  set(cmMesonTestF2_FOUND        ON)
+  set(cmMesonTestF2_LIBRARIES    ${ZLIB_LIBRARY})
+  set(cmMesonTestF2_INCLUDE_DIRS ${ZLIB_INCLUDE_DIR})
+else()
+  set(cmMesonTestF2_FOUND       OFF)
+endif()

test cases/linuxlike/13 cmake dependency/meson.build

@@ -44,6 +44,8 @@ assert(depf2.found() == false, 'Invalid CMake targets should fail')
 # Try to find cmMesonTestDep in a custom prefix
 # setup_env.json is used by run_project_tests.py:_run_test to point to ./cmake_pref_env/
 depPrefEnv = dependency('cmMesonTestDep', required : true, method : 'cmake')
+depPrefEnv1 = dependency('cmMesonTestF1', required : true, method : 'cmake')
+depPrefEnv2 = dependency('cmMesonTestF2', required : true, method : 'cmake')
 
 # Try to find a dependency with a custom CMake module
 

test cases/linuxlike/13 cmake dependency/test.json

@@ -1,5 +1,5 @@
 {
   "env": {
-    "CMAKE_PREFIX_PATH": "@ROOT@/cmake_pref_env"
+    "CMAKE_PREFIX_PATH": "@ROOT@/cmake_fake1;@ROOT@/cmake_fake2:@ROOT@/cmake_pref_env"
   }
 }