[CMake] [PATCH] FindQt4: do not prepend CMake root path when searching the mkspecs directory

[Thomas Petazzoni]

When searching for the mkspecs directory, FindQT4 uses the find_path()
function, but it doesn't pass the NO_CMAKE_FIND_ROOT_PATH, which means
that all paths are interpreted relatively to the CMAKE_FIND_ROOT_PATH.

However, both the ${qt_mkspecs_dirs} and ${qt_cross_paths} variable
that are passed as hints are already absolute paths, and do not need
to be prepended by the CMAKE_FIND_ROOT_PATH.

Due to this problem, FindQT4 was unable to find qconfig.pri, and
QT_MKSPECS_DIR was left defined to "NOTFOUND".

Signed-off-by: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
---
 Modules/FindQt4.cmake | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Modules/FindQt4.cmake b/Modules/FindQt4.cmake
index 28b8454..0b8ce92 100644
--- a/Modules/FindQt4.cmake
+++ b/Modules/FindQt4.cmake
@@ -760,7 +760,7 @@ if (QT_QMAKE_EXECUTABLE AND QTVERSION)
     endforeach()
     set(QT_MKSPECS_DIR NOTFOUND)
     find_path(QT_MKSPECS_DIR NAMES qconfig.pri
-      HINTS ${qt_cross_paths} ${qt_mkspecs_dirs}
+      HINTS ${qt_cross_paths} ${qt_mkspecs_dirs} NO_CMAKE_FIND_ROOT_PATH
       DOC "The location of the Qt mkspecs containing qconfig.pri")
   endif()
 
-- 
1.8.3.2