fix for M1 building.

Author: bigcat88

build_scripts/wheels_macOS_M1.sh

@@ -5,5 +5,7 @@ export CIBW_BUILD_VERBOSITY=2
 export CIBW_BUILD="*-macosx_arm64"
 export CIBW_ARCHS=arm64
 export CIBW_PLATFORM=macos
+export CIBW_ENVIRONMENT="MACOSX_DEPLOYMENT_TARGET=12.0"
+
 
 cibuildwheel --platform macos

libheif/build.py

@@ -13,9 +13,6 @@
 include_dirs = ["/usr/local/include", "/usr/include", "/opt/local/include"]
 library_dirs = ["/usr/local/lib", "/usr/lib", "/lib", "/opt/local/lib"]
 
-if platform.lower() in ("darwin", "win32"):
-    include_dirs.append(path.dirname(path.dirname(path.abspath(__file__))))
-
 include_path_prefix = ""
 if platform.lower() == "darwin":
     include_path_prefix = getenv("HOMEBREW_PREFIX")
@@ -33,6 +30,8 @@
     if include_path_prefix_lib not in library_dirs:
         library_dirs.append(include_path_prefix_lib)
 
+if platform.lower() in ("darwin", "win32"):
+    include_dirs.append(path.dirname(path.dirname(path.abspath(__file__))))
 
 ffi.set_source(
     "pillow_heif.libheif",