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Subject: [PATCH] cmake.bbclass: adding extendable extra variable to root path
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Introducing a hook variable for various .conf files to add
extra path elements to cmake. For example, it can be used
in external toolchain conf file to add ${TOOLCHAIN_PATH}
to cmake root path search.

Signed-off-by: Andrew Gabbasov <andrew_gabbasov@mentor.com>
---
 meta/classes/cmake.bbclass |    3 ++-
 1 files changed, 2 insertions(+), 1 deletions(-)

diff --git a/meta/classes/cmake.bbclass b/meta/classes/cmake.bbclass
index ab23bed..432427e 100644
--- a/meta/classes/cmake.bbclass
+++ b/meta/classes/cmake.bbclass
@@ -26,6 +26,7 @@ OECMAKE_CXX_FLAGS_RELEASE ?= "${SELECTED_OPTIMIZATION} ${CXXFLAGS} -DNDEBUG"
 
 OECMAKE_RPATH ?= ""
 OECMAKE_PERLNATIVE_DIR ??= ""
+OECMAKE_EXTRA_ROOT_PATH ?= ""
 
 cmake_do_generate_toolchain_file() {
 	cat > ${WORKDIR}/toolchain.cmake <<EOF
@@ -42,7 +43,7 @@ set( CMAKE_CXX_FLAGS_RELEASE "${OECMAKE_CXX_FLAGS_RELEASE}" CACHE STRING "CXXFLA
 
 # only search in the paths provided so cmake doesnt pick
 # up libraries and tools from the native build machine
-set( CMAKE_FIND_ROOT_PATH ${STAGING_DIR_HOST} ${STAGING_DIR_NATIVE} ${CROSS_DIR} ${OECMAKE_PERLNATIVE_DIR})
+set( CMAKE_FIND_ROOT_PATH ${STAGING_DIR_HOST} ${STAGING_DIR_NATIVE} ${CROSS_DIR} ${OECMAKE_PERLNATIVE_DIR} ${OECMAKE_EXTRA_ROOT_PATH} )
 set( CMAKE_FIND_ROOT_PATH_MODE_PROGRAM ONLY )
 set( CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY )
 set( CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY )