From ebc4611badc32cda12bb40eab496a33e616962d5 Mon Sep 17 00:00:00 2001
From: Christoph Reiter <reiter.christoph@gmail.com>
Date: Wed, 29 Oct 2025 21:15:43 +0100
Subject: [PATCH] Revert "build Mode.c as a common library"

This reverts commit 28adda9299daac9cd4ee349474d7618c16152d2d.
---
 setup.py | 25 ++++++++++++++++---------
 1 file changed, 16 insertions(+), 9 deletions(-)

diff --git a/setup.py b/setup.py
index 3a72a0742..fec8659bf 100644
--- a/setup.py
+++ b/setup.py
@@ -107,6 +107,7 @@ _LIB_IMAGING = (
     "JpegDecode",
     "JpegEncode",
     "Matrix",
+    "Mode",
     "ModeFilter",
     "Negative",
     "Offset",
@@ -1011,6 +1012,17 @@ class pil_build_ext(build_ext):
 
         self.summary_report(feature)
 
+    def build_extension(self, ext):
+        # Append the extension name (not including "PIL.") to the temp build directory
+        # so that each module builds to its own directory. We need to make a (shallow)
+        # copy of 'self' here so that we don't overwrite this value when running in
+        # parallel.
+        import copy
+
+        self_copy = copy.copy(self)
+        self_copy.build_temp = os.path.join(self.build_temp, ext.name[4:])
+        build_ext.build_extension(self_copy, ext)
+
     def summary_report(self, feature: ext_feature) -> None:
         print("-" * 68)
         print("PIL SETUP SUMMARY")
@@ -1076,20 +1088,16 @@ def debug_build() -> bool:
     return hasattr(sys, "gettotalrefcount") or FUZZING_BUILD
 
 
-libraries: list[tuple[str, _BuildInfo]] = [
-    ("pil_imaging_mode", {"sources": ["src/libImaging/Mode.c"]}),
-]
-
 files: list[str | os.PathLike[str]] = ["src/_imaging.c"]
 for src_file in _IMAGING:
     files.append("src/" + src_file + ".c")
 for src_file in _LIB_IMAGING:
     files.append(os.path.join("src/libImaging", src_file + ".c"))
 ext_modules = [
-    Extension("PIL._imaging", files, libraries=["pil_imaging_mode"]),
-    Extension("PIL._imagingft", ["src/_imagingft.c"], libraries=["pil_imaging_mode"]),
-    Extension("PIL._imagingcms", ["src/_imagingcms.c"], libraries=["pil_imaging_mode"]),
-    Extension("PIL._webp", ["src/_webp.c"], libraries=["pil_imaging_mode"]),
+    Extension("PIL._imaging", files),
+    Extension("PIL._imagingft", ["src/_imagingft.c", "src/libImaging/Mode.c"]),
+    Extension("PIL._imagingcms", ["src/_imagingcms.c", "src/libImaging/Mode.c"]),
+    Extension("PIL._webp", ["src/_webp.c", "src/libImaging/Mode.c"]),
     Extension("PIL._avif", ["src/_avif.c"]),
     Extension("PIL._imagingtk", ["src/_imagingtk.c", "src/Tk/tkImaging.c"]),
     Extension("PIL._imagingmath", ["src/_imagingmath.c"]),
@@ -1101,7 +1109,6 @@ try:
     setup(
         cmdclass={"build_ext": pil_build_ext},
         ext_modules=ext_modules,
-        libraries=libraries,
         zip_safe=not (debug_build() or PLATFORM_MINGW),
     )
 except RequiredDependencyException as err:
-- 
2.51.2