raqm is in Debian testing and Fedora:

    https://packages.debian.org/source/buster/raqm
    https://apps.fedoraproject.org/packages/libraqm

My cygport file and patch are attached.

Package files:

http://sanibeltranquility.com/cygwin/x86/release/raqm/raqm-0.5.0-1-src.tar.xz
http://sanibeltranquility.com/cygwin/x86/release/raqm/raqm-0.5.0-1.hint
http://sanibeltranquility.com/cygwin/x86/release/raqm/libraqm-devel/libraqm-devel-0.5.0-1.hint
http://sanibeltranquility.com/cygwin/x86/release/raqm/libraqm-devel/libraqm-devel-0.5.0-1.tar.xz
http://sanibeltranquility.com/cygwin/x86/release/raqm/raqm-doc/raqm-doc-0.5.0-1.hint
http://sanibeltranquility.com/cygwin/x86/release/raqm/raqm-doc/raqm-doc-0.5.0-1.tar.xz
http://sanibeltranquility.com/cygwin/x86/release/raqm/raqm-debuginfo/raqm-debuginfo-0.5.0-1.hint
http://sanibeltranquility.com/cygwin/x86/release/raqm/raqm-debuginfo/raqm-debuginfo-0.5.0-1.tar.xz
http://sanibeltranquility.com/cygwin/x86/release/raqm/libraqm0/libraqm0-0.5.0-1.hint
http://sanibeltranquility.com/cygwin/x86/release/raqm/libraqm0/libraqm0-0.5.0-1.tar.xz
http://sanibeltranquility.com/cygwin/x86_64/release/raqm/raqm-0.5.0-1-src.tar.xz
http://sanibeltranquility.com/cygwin/x86_64/release/raqm/raqm-0.5.0-1.hint
http://sanibeltranquility.com/cygwin/x86_64/release/raqm/libraqm-devel/libraqm-devel-0.5.0-1.hint
http://sanibeltranquility.com/cygwin/x86_64/release/raqm/libraqm-devel/libraqm-devel-0.5.0-1.tar.xz
http://sanibeltranquility.com/cygwin/x86_64/release/raqm/raqm-doc/raqm-doc-0.5.0-1.hint
http://sanibeltranquility.com/cygwin/x86_64/release/raqm/raqm-doc/raqm-doc-0.5.0-1.tar.xz
http://sanibeltranquility.com/cygwin/x86_64/release/raqm/raqm-debuginfo/raqm-debuginfo-0.5.0-1.hint
http://sanibeltranquility.com/cygwin/x86_64/release/raqm/raqm-debuginfo/raqm-debuginfo-0.5.0-1.tar.xz
http://sanibeltranquility.com/cygwin/x86_64/release/raqm/libraqm0/libraqm0-0.5.0-1.hint
http://sanibeltranquility.com/cygwin/x86_64/release/raqm/libraqm0/libraqm0-0.5.0-1.tar.xz

License: MIT

Ken