use.desc: Introduce 'gtk-doc' global USE flag

gtk-doc API docs are not shipped pregenerated with meson anymore, thus
developers might want to enable these kind of docs globally, independent
of everything else that USE=doc covers. Therefore introduce a separate
USE flag for this directly as a global USE flag, as many meson ports, to
be committed soon, will make use of it instead of USE=doc.
This is meant for cases where gtk-doc is otherwise not installed.
Typically autotools based build systems pregenerate gtk-docs into disted
tarball and such a USE flag is not necessary there, as the configure
argument makes it only regenerate it.

Link: https://archives.gentoo.org/gentoo-dev/message/f399ebe56c25ab895eb36a236747d76e

diff --git a/profiles/use.desc b/profiles/use.desc
index 36fa72009cb49422854b0aa0a9e7d5f2067cafc9..b03b5b9dade7f24b2b0b29888dc700f2fae05737 100644 (file)
--- a/profiles/use.desc
+++ b/profiles/use.desc
@@ -128,6 +128,7 @@ gsl - Use the GNU scientific library for calculations
 gsm - Add support for the gsm lossy speech compression codec
 gstreamer - Add support for media-libs/gstreamer (Streaming media)
 gtk - Add support for x11-libs/gtk+ (The GIMP Toolkit)
+gtk-doc - Build and install gtk-doc based developer documentation for dev-util/devhelp, IDE and offline use
 guile - Add support for the guile Scheme interpreter
 gzip - Compress files with Lempel-Ziv coding (LZ77)
 handbook - Enable handbooks generation for packages by KDE