Hello Luigi,
Is there anything I can do?
iirc there is a texlive option; try --tlopt="--enable-arm-neon=check" to build.sh
unfortunately this gives me the following error: /luatexdir/luafontloader/fontforge/inc -I../../../source/texk/web2c/luatexdir/luafontloader/fontforge/fontforge -MT luatexdir/luafontloader/fontforge/fontforge/libff_a-featurefile.o -MD -MP -MF luatexdir/luafontloader/fontforge/fontforge/.deps/libff_a-featurefile.Tpo -c -o luatexdir/luafontloader/fontforge/fontforge/libff_a-featurefile.o `test -f 'luatexdir/luafontloader/fontforge/fontforge/featurefile.c' || echo '../../../source/texk/web2c/'`luatexdir/luafontloader/fontforge/fontforge/featurefile.c mv -f mplibdir/.deps/libmputil_a-decNumber.Tpo mplibdir/.deps/libmputil_a-decNumber.Po ../../../source/libs/libpng/libpng-src/arm/arm_init.c:49:4: error: "PNG_ARM_NEON_FILE undefined: no support for run-time ARM NEON checks" # error "PNG_ARM_NEON_FILE undefined: no support for run-time ARM NEON checks" ^ ../../../source/libs/libpng/libpng-src/arm/arm_init.c:86:27: error: implicit declaration of function 'png_have_neon' is invalid in C99 [-Werror,-Wimplicit-function-declaration] no_neon = !png_have_neon(pp); ^ 2 errors generated. My build command was: ./build.sh --clang --luahb --lua53 --nojit --parallel --nostrip --tlopt="--enable-arm-neon=check" Patrick