1 files changed, 61 insertions, 0 deletions
diff --git a/mesonbuild/compilers/c.py b/mesonbuild/compilers/c.py
index c0cd0bc..0a90c8c 100644
--- a/mesonbuild/compilers/c.py
+++ b/mesonbuild/compilers/c.py
@@ -59,6 +59,7 @@ class CCompiler(Compiler):
     library_dirs_cache = {}
     program_dirs_cache = {}
     find_library_cache = {}
+    find_framework_cache = {}
     internal_libs = gnu_compiler_internal_libs
 
     @staticmethod
@@ -1052,6 +1053,66 @@ class CCompiler(Compiler):
         code = 'int main(int argc, char **argv) { return 0; }'
         return self.find_library_impl(libname, env, extra_dirs, code, libtype)
 
+    def find_framework_paths(self, env):
+        '''
+        These are usually /Library/Frameworks and /System/Library/Frameworks,
+        unless you select a particular macOS SDK with the -isysroot flag.
+        You can also add to this by setting -F in CFLAGS.
+        '''
+        if self.id != 'clang':
+            raise MesonException('Cannot find framework path with non-clang compiler')
+        # Construct the compiler command-line
+        commands = self.get_exelist() + ['-v', '-E', '-']
+        commands += self.get_always_args()
+        # Add CFLAGS/CXXFLAGS/OBJCFLAGS/OBJCXXFLAGS from the env
+        commands += env.coredata.get_external_args(self.language)
+        mlog.debug('Finding framework path by running: ', ' '.join(commands), '\n')
+        os_env = os.environ.copy()
+        os_env['LC_ALL'] = 'C'
+        _, _, stde = Popen_safe(commands, env=os_env, stdin=subprocess.PIPE)
+        paths = []
+        for line in stde.split('\n'):
+            if '(framework directory)' not in line:
+                continue
+            # line is of the form:
+            # ` /path/to/framework (framework directory)`
+            paths.append(line[:-21].strip())
+        return paths
+
+    def find_framework_real(self, name, env, extra_dirs, allow_system):
+        code = 'int main(int argc, char **argv) { return 0; }'
+        link_args = []
+        for d in extra_dirs:
+            link_args += ['-F' + d]
+        # We can pass -Z to disable searching in the system frameworks, but
+        # then we must also pass -L/usr/lib to pick up libSystem.dylib
+        extra_args = [] if allow_system else ['-Z', '-L/usr/lib']
+        link_args += ['-framework', name]
+        if self.links(code, env, extra_args=(extra_args + link_args)):
+            return link_args
+
+    def find_framework_impl(self, name, env, extra_dirs, allow_system):
+        if isinstance(extra_dirs, str):
+            extra_dirs = [extra_dirs]
+        key = (tuple(self.exelist), name, tuple(extra_dirs), allow_system)
+        if key in self.find_framework_cache:
+            value = self.find_framework_cache[key]
+        else:
+            value = self.find_framework_real(name, env, extra_dirs, allow_system)
+            self.find_framework_cache[key] = value
+        if value is None:
+            return None
+        return value[:]
+
+    def find_framework(self, name, env, extra_dirs, allow_system=True):
+        '''
+        Finds the framework with the specified name, and returns link args for
+        the same or returns None when the framework is not found.
+        '''
+        if self.id != 'clang':
+            raise MesonException('Cannot find frameworks with non-clang compiler')
+        return self.find_framework_impl(name, env, extra_dirs, allow_system)
+
     def thread_flags(self, env):
         if for_haiku(self.is_cross, env) or for_darwin(self.is_cross, env):
             return []