cmake: fix configure error if system Qt installation is broken

If the host Qt installation exists but is incomplete or the installed
qmake architecture doesn't match that of the Qt libraries, cmake was
failing at do_configure. cmake 2.8.10 failed silently here so we should
make 2.8.11 do the same.

Fixes [YOCTO #4565].

(From OE-Core rev: 2bf46fbd25e1a3a44d556758f536fa26c44edb03)

Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
Signed-off-by: Saul Wold <sgw@linux.intel.com>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

2 files changed, 56 insertions, 0 deletions

diff --git a/meta/recipes-devtools/cmake/cmake.inc b/meta/recipes-devtools/cmake/cmake.inc
index 6144d51be4..014ff5a750 100644
--- a/meta/recipes-devtools/cmake/cmake.inc
+++ b/meta/recipes-devtools/cmake/cmake.inc
@@ -15,6 +15,7 @@ SRC_URI = "http://www.cmake.org/files/v${CMAKE_MAJOR_VERSION}/cmake-${PV}.tar.gz
            file://support-oe-qt4-tools-names.patch \
            file://aarch64-cmake.patch \
            file://aarch64-kwsys.patch \
+           file://qt4-fail-silent.patch \
            "
 
 inherit autotools
diff --git a/meta/recipes-devtools/cmake/cmake/qt4-fail-silent.patch b/meta/recipes-devtools/cmake/cmake/qt4-fail-silent.patch
new file mode 100644
index 0000000000..fd39f3f9e7
--- /dev/null
+++ b/meta/recipes-devtools/cmake/cmake/qt4-fail-silent.patch
@@ -0,0 +1,55 @@
+Fail silently if system Qt installation is broken
+
+Fixes a regression in behaviour from 2.8.10 to 2.8.11 resulting in the
+following error if the system Qt installation is broken:
+
+CMake Error at Modules/FindQt4.cmake:1028 (set_property):
+  set_property could not find TARGET Qt4::QtCore.  Perhaps it has not yet
+  been created.
+Call Stack (most recent call first):
+  Tests/RunCMake/CMakeLists.txt:79 (find_package)
+
+Upstream-Status: Pending
+
+Signed-off-by: Paul Eggleton <paul.eggleton@linux.intel.com>
+
+--- cmake-2.8.11/Modules/FindQt4.cmake  2013-07-04 10:20:42.092848274 +0100
++++ cmake-2.8.11/Modules/FindQt4.cmake  2013-07-04 10:52:15.693380555 +0100
+@@ -1025,21 +1025,22 @@
+     set(_configs)
+   endmacro()
+ 
+-
+-  # Set QT_xyz_LIBRARY variable and add
+-  # library include path to QT_INCLUDES
+-  _QT4_ADJUST_LIB_VARS(QtCore)
+-  set_property(TARGET Qt4::QtCore APPEND PROPERTY
+-    INTERFACE_INCLUDE_DIRECTORIES
+-      "${QT_MKSPECS_DIR}/default"
+-      ${QT_INCLUDE_DIR}
+-  )
+-  set_property(TARGET Qt4::QtCore PROPERTY
+-    INTERFACE_QT_MAJOR_VERSION 4
+-  )
+-  set_property(TARGET Qt4::QtCore APPEND PROPERTY
+-    COMPATIBLE_INTERFACE_STRING QT_MAJOR_VERSION
+-  )
++  if(QT_QTCORE_FOUND)
++    # Set QT_xyz_LIBRARY variable and add
++    # library include path to QT_INCLUDES
++    _QT4_ADJUST_LIB_VARS(QtCore)
++    set_property(TARGET Qt4::QtCore APPEND PROPERTY
++      INTERFACE_INCLUDE_DIRECTORIES
++        "${QT_MKSPECS_DIR}/default"
++        ${QT_INCLUDE_DIR}
++    )
++    set_property(TARGET Qt4::QtCore PROPERTY
++      INTERFACE_QT_MAJOR_VERSION 4
++    )
++    set_property(TARGET Qt4::QtCore APPEND PROPERTY
++      COMPATIBLE_INTERFACE_STRING QT_MAJOR_VERSION
++    )
++  endif()
+ 
+   foreach(QT_MODULE ${QT_MODULES})
+     _QT4_ADJUST_LIB_VARS(${QT_MODULE})