i HATE ZLIB PART 2

modules/zlib/src/crc32_stub.c

@@ -0,0 +1,29 @@
+// Minimal CRC folding stubs for builds without CRC SIMD support.
+
+#include "zutil.h"
+#include "crc32.h"
+
+// The folded CRC state type is declared in crc32.h as crc32_fold (or similar).
+// We don't use any SIMD here; we just fall back to scalar crc32.
+
+void crc_fold_init(crc32_fold *crc)
+{
+    // Initialize to standard CRC-32 initial value.
+    crc->crc = 0xffffffffu;
+}
+
+void crc_fold_copy(crc32_fold *crc,
+                   unsigned char *dst,
+                   const unsigned char *src,
+                   long len)
+{
+    // Simple scalar copy + CRC update.
+    memcpy(dst, src, (size_t)len);
+    crc->crc = crc32(crc->crc, src, (uInt)len);
+}
+
+uint32_t crc_fold_512to32(crc32_fold *crc)
+{
+    // Finalize CRC (invert bits as usual).
+    return crc->crc ^ 0xffffffffu;
+}

modules/zlib/src/moz.build

@@ -38,6 +38,7 @@ if CONFIG['INTEL_ARCHITECTURE']:
         DEFINES['INFLATE_CHUNK_SIMD_SSE2'] = False
         DEFINES['CRC32_SIMD_SSE42_PCLMUL'] = False
         SOURCES += [
+            'crc32_stub.c',
             'simd_stub.c',
         ]
     else: