[gentoo-dev] [PATCH] cmake-utils.eclass: die if ninja is enabled but not installed

[Michael Palimaka]

This could happen if ninja is manually enabled (eg. make.conf) but not installed
---
 eclass/cmake-utils.eclass | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/eclass/cmake-utils.eclass b/eclass/cmake-utils.eclass
index 480cd09..012b13f 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)
-- 
2.4.9