try to fix raspberry build

.travis.yml

@@ -1,9 +1,9 @@
 dist: trusty
 before_install:
 - sudo apt-get update
-- sudo apt-get install -y cmake libv4l-dev liblog4cpp5-dev liblivemedia-dev
+- sudo apt-get install -y cmake liblog4cpp5-dev liblivemedia-dev
 - sudo apt-get install -y qemu-user-static debootstrap 
-- sudo debootstrap --variant=minbase --arch armhf --foreign --include=g++,libv4l-dev,liblog4cpp5-dev,liblivemedia-dev jessie rootfs
+- sudo debootstrap --variant=minbase --arch armhf --foreign --include=g++-4.8,liblog4cpp5-dev,liblivemedia-dev jessie rootfs
 - sudo cp /usr/bin/qemu-arm-static rootfs/usr/bin/
 - sudo chroot rootfs /debootstrap/debootstrap --second-stage
 - git clone https://github.com/raspberrypi/tools.git rpi_tools

raspberry.toolchain

@@ -4,3 +4,4 @@ SET(CMAKE_C_COMPILER arm-linux-gnueabihf-gcc)
 SET(CMAKE_CXX_COMPILER arm-linux-gnueabihf-g++)
 SET(CMAKE_FIND_ROOT_PATH ${PROJECT_SOURCE_DIR}/rootfs)
 SET(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
+include_directories(SYSTEM ${PROJECT_SOURCE_DIR}/rootfs/usr/include/arm-linux-gnueabihf)