From: Michael Palimaka <kensington@gentoo.org>
Date: Thu, 15 Oct 2015 14:03:23 +0000 (+1100)
Subject: cmake-utils.eclass: die if ninja is enabled but not installed
X-Git-Url: http://git.tremily.us/gitweb.cgi?a=commitdiff_plain;h=e9cd2c48c36ac18a3b50ab09e1ced545260d4b30;p=gentoo.git

cmake-utils.eclass: die if ninja is enabled but not installed

This could happen if ninja is manually enabled (eg. make.conf) but not installed

Gentoo-bug: 561570
---

diff --git a/eclass/cmake-utils.eclass b/eclass/cmake-utils.eclass
index 480cd099648c..012b13f059c8 100644
--- a/eclass/cmake-utils.eclass
+++ b/eclass/cmake-utils.eclass
@@ -228,6 +228,11 @@ _generator_to_use() {
 
 	case ${CMAKE_MAKEFILE_GENERATOR} in
 		ninja)
+			# if ninja is enabled but not installed, the build could fail
+			# this could happen if ninja is manually enabled (eg. make.conf) but not installed
+			if ! has_version dev-util/ninja; then
+				die "CMAKE_MAKEFILE_GENERATOR is set to ninja, but ninja is not installed. Please install dev-util/ninja or unset CMAKE_MAKEFILE_GENERATOR."
+			fi
 			generator_name="Ninja"
 			;;
 		emake)