aedi: add glew target

aedi/target/__init__.py

@@ -70,6 +70,7 @@ def targets():
         DumbTarget(),
         FmtTarget(),
         FreeTypeTarget(),
+        GlewTarget(),
         LzmaTarget(),
         MadTarget(),
         MikmodTarget(),

aedi/target/library_tier2.py

@@ -78,6 +78,47 @@ class FreeTypeTarget(CMakeStaticDependencyTarget):
         shutil.copy(state.patch_path + 'freetype-config', bin_path)
 
 
+class GlewTarget(CMakeStaticDependencyTarget):
+    def __init__(self, name='glew'):
+        super().__init__(name)
+
+        self.src_root = 'build/cmake'
+        self.options['BUILD_UTILS'] = 'NO'
+
+    def prepare_source(self, state: BuildState):
+        state.download_source(
+            'https://github.com/nigels-com/glew/releases/download/glew-2.2.0/glew-2.2.0.tgz',
+            'd4fc82893cfb00109578d0a1a2337fb8ca335b3ceccf97b97e5cc7f08e4353e1')
+
+    def detect(self, state: BuildState) -> bool:
+        return os.path.exists(state.source + 'glew.pc.in')
+
+    LINKER_FLAGS = '-framework OpenGL'
+
+    def post_build(self, state: BuildState):
+        super().post_build(state)
+
+        def update_linker_flags(line: str):
+            link_var = '  INTERFACE_LINK_LIBRARIES '
+
+            if line.startswith(link_var):
+                return f'{link_var}"{GlewTarget.LINKER_FLAGS}"\n'
+
+            return line
+
+        cmake_module = state.install_path + 'lib/cmake/glew/glew-targets.cmake'
+        self.update_text_file(cmake_module, update_linker_flags)
+
+    @staticmethod
+    def _process_pkg_config(pcfile: str, line: str) -> str:
+        libs = 'Libs:'
+
+        if line.startswith(libs):
+            return libs + ' -L${libdir} -lGLEW ' + GlewTarget.LINKER_FLAGS + os.linesep
+
+        return line
+
+
 class LzmaTarget(CMakeStaticDependencyTarget):
     def __init__(self, name='lzma'):
         super().__init__(name)