Hi all, I try to compile LuaTeX (master branch) on macOS / m1 (arm): ./build.sh --clang --luahb --lua53 --nojit --parallel --nostrip and after a while I get this error: libtool: link: clang++ -Wall -Wunused -Wreturn-type -Wno-write-strings -o luahbtex luatexdir/luahbtex-luatex.o mplibdir/luahbtex-lmplib.o -Wl,-bind_at_load libluahbtexspecific.a libluatex.a libff.a libluamisc.a libluasocket.a libluaffi.a libluaharfbuzz.a /Users/patrick/work/software/luaTeX/build-clang/libs/lua53/.libs/libtexlua53.a libmplibcore.a /Users/patrick/work/software/luaTeX/build-clang/libs/zziplib/libzzip.a /Users/patrick/work/software/luaTeX/build-clang/libs/libpng/libpng.a /Users/patrick/work/software/luaTeX/build-clang/libs/harfbuzz/libharfbuzz.a /Users/patrick/work/software/luaTeX/build-clang/libs/graphite2/libgraphite2.a /Users/patrick/work/software/luaTeX/build-clang/libs/pplib/libpplib.a /Users/patrick/work/software/luaTeX/build-clang/libs/zlib/libz.a lib/lib.a /Users/patrick/work/software/luaTeX/build-clang/texk/kpathsea/.libs/libkpathsea.a libmputil.a libunilib.a libmd5.a Undefined symbols for architecture arm64: "_png_do_expand_palette_rgb8_neon", referenced from: _png_do_expand_palette in libpng.a(pngrtran.o) "_png_do_expand_palette_rgba8_neon", referenced from: _png_do_expand_palette in libpng.a(pngrtran.o) "_png_init_filter_functions_neon", referenced from: _png_init_filter_functions in libpng.a(pngrutil.o) "_png_riffle_palette_neon", referenced from: _png_do_read_transformations in libpng.a(pngrtran.o) ld: symbol(s) not found for architecture arm64 clang: error: linker command failed with exit code 1 (use -v to see invocation) make: *** [luahbtex] Error 1 Is there anything I can do? Patrick