Index: PyMuPDF-1.18.19/setup.py
--- PyMuPDF-1.18.19/setup.py.orig	2021-08-27 23:47:55.321187000 +0200
+++ PyMuPDF-1.18.19/setup.py	2021-08-28 00:00:18.643850000 +0200
@@ -77,69 +77,12 @@
         return LIBRARIES["default"]
     return LIBRARIES[os_id]
 
-
-# check the platform
-if sys.platform.startswith("linux") or "gnu" in sys.platform:
-    module = Extension(
-        "fitz._fitz",  # name of the module
-        ["fitz/fitz_wrap.c"],  # C source file
-        include_dirs=[  # we need the path of the MuPDF headers
-            "/usr/include/mupdf",
-            "/usr/local/include/mupdf",
-            "mupdf/thirdparty/freetype/include",
-            "/usr/include/freetype2",
-        ],
-        libraries=load_libraries(),
-    )
-elif sys.platform.startswith(("darwin", "freebsd", "openbsd")):
-    module = Extension(
-        "fitz._fitz",  # name of the module
-        ["fitz/fitz_wrap.c"],  # C source file
-        # directories containing mupdf's header files
-        include_dirs=[
-            "/usr/local/include/mupdf",
-            "/usr/local/include",
-            "mupdf/thirdparty/freetype/include",
-            "/usr/local/include/freetype2",
-            "/usr/X11R6/include/freetype2",
-            "/opt/homebrew/include",
-            "/opt/homebrew/include/mupdf",
-            "/opt/homebrew/include/freetype2",
-        ],
-        # libraries should already be linked here by brew
-        library_dirs=["/usr/local/lib", "/opt/homebrew/lib"],
-        # library_dirs=['/usr/local/Cellar/mupdf-tools/1.8/lib/',
-        # '/usr/local/Cellar/openssl/1.0.2g/lib/',
-        # '/usr/local/Cellar/jpeg/8d/lib/',
-        # '/usr/local/Cellar/freetype/2.6.3/lib/',
-        # '/usr/local/Cellar/jbig2dec/0.12/lib/'
-        # ],
-        libraries=["mupdf", "mupdf-third"],
-    )
-
-else:
-    # ===============================================================================
-    # Build / set up PyMuPDF under Windows
-    # ===============================================================================
-    module = Extension(
-        "fitz._fitz",
-        include_dirs=[  # we need the path of the MuPDF's headers
-            "./mupdf/include",
-            "./mupdf/include/mupdf",
-            "./mupdf/thirdparty/freetype/include",
-        ],
-        libraries=[  # these are needed in Windows
-            "libmupdf",
-            "libresources",
-            "libthirdparty",
-        ],
-        extra_link_args=["/NODEFAULTLIB:MSVCRT"],
-        # x86 dir of libmupdf.lib etc.
-        library_dirs=["./mupdf/platform/win32/Release"],
-        # x64 dir of libmupdf.lib etc.
-        # library_dirs=['./mupdf/platform/win32/x64/Release'],
-        sources=["./fitz/fitz_wrap.c"],
-    )
+module = Extension(
+    "fitz._fitz",
+    ["fitz/fitz_wrap.c"],
+    include_dirs=[ "@l_prefix@/include/mupdf", "@l_prefix@/include/freetype", "@l_prefix@/include", ],
+    library_dirs=[ "@l_prefix@/lib/", ],
+    libraries=[ "mupdf", "mupdf-third", ])
 
 pkg_tab = open("PKG-INFO", "rb").read().splitlines()
 long_dtab = []  # long description lines