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-rw-r--r--Modules/FindRuby.cmake17
1 files changed, 13 insertions, 4 deletions
diff --git a/Modules/FindRuby.cmake b/Modules/FindRuby.cmake
index 119cb63dd..c02158f13 100644
--- a/Modules/FindRuby.cmake
+++ b/Modules/FindRuby.cmake
@@ -46,15 +46,24 @@ set(_RUBY_POSSIBLE_EXECUTABLE_NAMES ruby)
# if 1.9 is required, don't look for ruby18 and ruby1.8, default to version 1.8
if(Ruby_FIND_VERSION_MAJOR AND Ruby_FIND_VERSION_MINOR)
set(Ruby_FIND_VERSION_SHORT_NODOT "${Ruby_FIND_VERSION_MAJOR}${RUBY_FIND_VERSION_MINOR}")
+ # we can't construct that if only major version is given
+ set(_RUBY_POSSIBLE_EXECUTABLE_NAMES
+ ruby${Ruby_FIND_VERSION_MAJOR}.${Ruby_FIND_VERSION_MINOR}
+ ruby${Ruby_FIND_VERSION_MAJOR}${Ruby_FIND_VERSION_MINOR}
+ ${_RUBY_POSSIBLE_EXECUTABLE_NAMES})
else()
set(Ruby_FIND_VERSION_SHORT_NODOT "18")
endif()
-set(_RUBY_POSSIBLE_EXECUTABLE_NAMES ${_RUBY_POSSIBLE_EXECUTABLE_NAMES} ruby1.9 ruby19)
+if(NOT Ruby_FIND_VERSION_EXACT)
+ list(APPEND _RUBY_POSSIBLE_EXECUTABLE_NAMES ruby1.9 ruby19)
-# if we want a version below 1.9, also look for ruby 1.8
-if("${Ruby_FIND_VERSION_SHORT_NODOT}" VERSION_LESS "19")
- set(_RUBY_POSSIBLE_EXECUTABLE_NAMES ${_RUBY_POSSIBLE_EXECUTABLE_NAMES} ruby1.8 ruby18)
+ # if we want a version below 1.9, also look for ruby 1.8
+ if("${Ruby_FIND_VERSION_SHORT_NODOT}" VERSION_LESS "19")
+ list(APPEND _RUBY_POSSIBLE_EXECUTABLE_NAMES ruby1.8 ruby18)
+ endif()
+
+ list(REMOVE_DUPLICATES _RUBY_POSSIBLE_EXECUTABLE_NAMES)
endif()
find_program(RUBY_EXECUTABLE NAMES ${_RUBY_POSSIBLE_EXECUTABLE_NAMES})