v1.2.2

• Update libpng submodule:
  • URL to https://github.com/pnggroup/libpng.git
  • Version from v1.6.41 to v1.6.43.
• Update libwebp submodule to v1.4.0.
  • Makefile: add libwebp/src/utils/palette.c.
• Fix exestamp.py (accidentally broken in bdfa983 / v1.2.0).
• Don't redefine preprocessor macros with leading underscores.
• Rework type punning / endianness detection (pun.h).
• exestamp.c:
  • Remove suppression of false uninitialized variable warnings.
  • Rework argument parsing slightly.
• Otherwise this is just a version bump.

See previous releases.

Attached png2webp.exe and png2webp_nothreads.exe compiled with MSYS2 CLANG64 x86_64-w64-mingw32-clang 18.1.4-1.

png2webp.exe
SHA-256: 3ef6bfc40f6b0d1b97ccdfdca77975c7b943603f124921218618e90bbb36c1e8. VirusTotal, Hybrid Analysis.
png2webp_nothreads.exe
SHA-256: a5cb48d38495da8a45a9ae8a0c55f618440beaefc146c938ec1d4c2d315146e8. VirusTotal, Hybrid Analysis.

Linux builds coming soon...