add support for cups dependencies (#2255)

* add support for cups dependencies

libcups has its own cups-config tool rather than using pkg-config.
This adds support for cups-config, based on pcap-config and
sdl2-config implementations.

This change also includes the unit test case and documentation for
cups dependency object implementation, and libcups2 dep to CI image.

1 files changed, 10 insertions, 0 deletions

diff --git a/docs/markdown/Dependencies.md b/docs/markdown/Dependencies.md
index 9050696..187c4fe 100644
--- a/docs/markdown/Dependencies.md
+++ b/docs/markdown/Dependencies.md
@@ -132,6 +132,16 @@ automatically:
 pcap_dep = dependency('pcap', version : '>=1.0')
 ```
 
+## CUPS
+
+The cups library does not ship with pkg-config at the time or writing
+but instead it has its own `cups-config` util. Meson will use it
+automatically:
+
+```meson
+cups_dep = dependency('cups', version : '>=1.4')
+```
+
 ## Declaring your own
 
 You can declare your own dependency objects that can be used