libjpeg: relocatable shared lib on macOS

recipes/libjpeg/all/conanfile.py

@@ -100,6 +100,13 @@ def _configure_autotools(self):
     def _patch_sources(self):
         for patch in self.conan_data.get("patches", {}).get(self.version, []):
             tools.patch(**patch)
+        # Fix rpath in LC_ID_DYLIB of installed shared libs on macOS
+        if tools.is_apple_os(self.settings.os):
+            tools.replace_in_file(
+                os.path.join(self._source_subfolder, "configure"),
+                "-install_name \\$rpath/",
+                "-install_name @rpath/",
+            )
 
     def build(self):
         self._patch_sources()

recipes/libjpeg/all/test_package/conanfile.py

@@ -11,6 +11,16 @@ def _test_transupp(self):
         # transupp+libjpeg makes use of stdio of the C library. This cannot be used when using a dll libjpeg, built with a static c library.
         return not (self.options["libjpeg"].shared and self.settings.compiler == "Visual Studio" and "MT" in self.settings.compiler.runtime)
 
+    def build_requirements(self):
+        if hasattr(self, "settings_build") and tools.cross_building(self) and \
+           self.settings.os == "Macos" and self.settings.arch == "armv8":
+            # Workaround for CMake bug with error message:
+            # Attempting to use @rpath without CMAKE_SHARED_LIBRARY_RUNTIME_C_FLAG being
+            # set. This could be because you are using a Mac OS X version less than 10.5
+            # or because CMake's platform configuration is corrupt.
+            # FIXME: Remove once CMake on macOS/M1 CI runners is upgraded.
+            self.build_requires("cmake/3.22.0")
+
     def build(self):
         cmake = CMake(self)
         cmake.configure()