Linux arm64 support

[B3rn475]

There is currently no support for Linux on arm64. This is particularly important for users using a Raspberry PI or the new free pools in travis-ci.com

The build fails with error:

../libpng/libpng.a(pngrutil.o): In function `png_read_filter_row':
pngrutil.c:(.text+0x1f80): undefined reference to `png_init_filter_functions_neon'

[Salamandar]

#97 for reference

[jrenggli]

Just found WebThingsIO/gateway-deb#2. This issue covers the same or a similar problem.

The suggested fix in https://github.com/WebThingsIO/gateway-deb/pull/3/files#diff-889c5495b68d2a0c0d1f238818716a71939918499efbc0fc6d2994319624fc67R14 helped in my case.

Running

CPPFLAGS="-DPNG_ARM_NEON_OPT=0" yarn install

worked on (virtualized Linux on) Apple Silicon.

[rubnogueira]

For people having issues with optipng usage:

• optipng updated for 0.7.8
• binaries for linux arm64/x64 for alpine linux
• binaries for macos arm64/x64 (apple silicon)
• updated windows x64 binaries for 0.7.8
• esm or cjs versions (depending on the imagemin version)

https://github.com/PruvoNet/imagemin-optipng/tree/esm
https://github.com/PruvoNet/imagemin-optipng/tree/cjs
https://github.com/PruvoNet/optipng-bin/tree/esm
https://github.com/PruvoNet/optipng-bin/tree/cjs