Building native extensions. This could take a while...
ERROR: Error installing catpix:
ERROR: Failed to build gem native extension.
current directory: /data/data/com.termux/files/usr/lib/ruby/gems/2.5.0/gems/rmagick-2.16.0/ext/RMagick
/data/data/com.termux/files/usr/bin/ruby -r ./siteconf20190112-26739-1vvdqbd.rb extconf.rb
mkmf.rb can't find header files for ruby at /data/data/com.termux/files/usr/lib/ruby/include/ruby.h
extconf failed, exit code 1
Gem files will remain installed in /data/data/com.termux/files/usr/lib/ruby/gems/2.5.0/gems/rmagick-2.16.0 for inspection.
Results logged to /data/data/com.termux/files/usr/lib/ruby/gems/2.5.0/extensions/aarch64-linux/2.5.0/rmagick-2.16.0/gem_make.out```
also with rmagic
