cmake: add nativesdk and target versions

Adds a recipe that provides the nativesdk and target versions of
CMake.

This recipe is based on code from OpenEmbeeded (rev
b1f2e1501c19540617a829b37415c0616101c7ad).

(From OE-Core rev: ea25292bbf53c7542578e5d9f4ae0531f9d78374)

Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
Signed-off-by: Richard Purdie <richard.purdie@linuxfoundation.org>

meta/recipes-devtools/cmake/cmake/dont-run-cross-binaries.patch

@@ -0,0 +1,22 @@
+cmake: don't run cross-binaries on host machine
+
+When doing the cross build we obviously cannot run those binaries on
+host since they can be binary incompatible.
+
+Upstream-Status: Inappropriate [embedded specific]
+
+Signed-off-by: Otavio Salvador <otavio@ossystems.com.br>
+
+diff -ru cmake-2.8.2.orig/CMakeLists.txt cmake-2.8.2/CMakeLists.txt
+--- cmake-2.8.2.orig/CMakeLists.txt	2010-07-28 00:48:42.000000000 +0200
++++ cmake-2.8.2/CMakeLists.txt	2010-07-28 01:05:17.000000000 +0200
+@@ -518,7 +518,8 @@
+ 
+ # build the remaining subdirectories
+ ADD_SUBDIRECTORY(Source)
+-ADD_SUBDIRECTORY(Utilities)
++# Come on! Running the cross-binaries on host is not a good idea.
++#ADD_SUBDIRECTORY(Utilities)
+ ADD_SUBDIRECTORY(Tests)
+ 
+ # add a test

meta/recipes-devtools/cmake/cmake_2.8.3.bb

@@ -0,0 +1,45 @@
+require cmake.inc
+
+inherit cmake
+
+DEPENDS += "curl expat zlib libarchive ncurses"
+
+PR = "${INC_PR}.0"
+
+SRC_URI += "file://dont-run-cross-binaries.patch"
+
+SRC_URI[md5sum] = "a76a44b93acf5e3badda9de111385921"
+SRC_URI[sha256sum] = "689ed02786b5cefa5515c7716784ee82a82e8ece6be5a3d629ac3cc0c05fc288"
+
+# Strip ${prefix} from ${docdir}, set result into docdir_stripped
+python () {
+    prefix=bb.data.getVar("prefix", d, 1)
+    docdir=bb.data.getVar("docdir", d, 1)
+
+    if not docdir.startswith(prefix):
+	raise bb.build.FuncFailed('docdir must contain prefix as its prefix')
+
+    docdir_stripped = docdir[len(prefix):]
+    if len(docdir_stripped) > 0 and docdir_stripped[0] == '/':
+	docdir_stripped = docdir_stripped[1:]
+
+    bb.data.setVar("docdir_stripped", docdir_stripped, d)
+}
+
+EXTRA_OECMAKE=" \
+    -DCMAKE_DOC_DIR=${docdir_stripped}/cmake-${CMAKE_MAJOR_VERSION} \
+    -DCMAKE_USE_SYSTEM_LIBRARIES=1 \
+    -DKWSYS_CHAR_IS_SIGNED=1 \
+    ${@base_contains('DISTRO_FEATURES', 'largefile', '-DKWSYS_LFS_WORKS=1', '-DKWSYS_LFS_DISABLE=1', d)} \
+"
+
+# FIXME: Hack due gcc-crosssdk not being able to detect those automatically
+CXXFLAGS_virtclass-nativesdk += " \
+   -I${STAGING_DIR_HOST}${SDKPATHNATIVE}/usr/include/c++ \
+   -I${STAGING_DIR_HOST}${SDKPATHNATIVE}/usr/include/c++/${TARGET_SYS} \
+   "
+
+FILES_${PN} += "${datadir}/cmake-${CMAKE_MAJOR_VERSION}"
+FILES_${PN}-doc += "${docdir}/cmake-${CMAKE_MAJOR_VERSION}"
+
+BBCLASSEXTEND = "nativesdk"