Fix warnings (#9257)

Author: hugovk

setup.py

@@ -1086,10 +1086,10 @@ def debug_build() -> bool:
 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"]),
+    Extension("PIL._imagingcms", ["src/_imagingcms.c"]),
+    Extension("PIL._webp", ["src/_webp.c"]),
     Extension("PIL._avif", ["src/_avif.c"]),
     Extension("PIL._imagingtk", ["src/_imagingtk.c", "src/Tk/tkImaging.c"]),
     Extension("PIL._imagingmath", ["src/_imagingmath.c"]),

src/libImaging/Arrow.c

@@ -149,7 +149,7 @@ assemble_metadata(const char *band_json) {
 }
 
 int
-export_named_type(struct ArrowSchema *schema, char *format, char *name) {
+export_named_type(struct ArrowSchema *schema, char *format, const char *name) {
     char *formatp;
     char *namep;
     size_t format_len = strlen(format) + 1;