Search for libtiff library file first on Windows and macOS

Author: radarhere

setup.py

@@ -754,12 +754,12 @@ def build_extensions(self) -> None:
  if feature.want("tiff"):
  _dbg("Looking for tiff")
  if _find_include_file(self, "tiff.h"):
- if _find_library_file(self, "tiff"):
- feature.set("tiff", "tiff")
  if sys.platform in ["win32", "darwin"] and _find_library_file(
  self, "libtiff"
  ):
  feature.set("tiff", "libtiff")
+ elif _find_library_file(self, "tiff"):
+ feature.set("tiff", "tiff")
 
  if feature.want("freetype"):
  _dbg("Looking for freetype")