Compiling OpenCV with GCC7 fails with fatal_error at stdlib include_next

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Hello,

we're currently developing ROS support for our modules. Therefore we need to compile ROS Kinetic packages with the gcc-linaro-7.2.1-2017.11-x86_64_arm-linux-gnueabihf toolchain.

I get the following error:

[ 63%] Building CXX object modules/highgui/CMakeFiles/opencv_highgui.dir/src/window.cpp.o
In file included from /opt/gcc-linaro-7.2.1-2017.11-x86_64_arm-linux-gnueabihf/arm-linux-gnueabihf/include/c++/7.2.1/ext/string_conversions.h:41:0,
 from /opt/gcc-linaro-7.2.1-2017.11-x86_64_arm-linux-gnueabihf/arm-linux-gnueabihf/include/c++/7.2.1/bits/basic_string.h:6349,
 from /opt/gcc-linaro-7.2.1-2017.11-x86_64_arm-linux-gnueabihf/arm-linux-gnueabihf/include/c++/7.2.1/string:52,
 from /opt/gcc-linaro-7.2.1-2017.11-x86_64_arm-linux-gnueabihf/arm-linux-gnueabihf/include/c++/7.2.1/stdexcept:39,
 from /opt/gcc-linaro-7.2.1-2017.11-x86_64_arm-linux-gnueabihf/arm-linux-gnueabihf/include/c++/7.2.1/array:39,
 from /ros_files_comm_cv/src/opencv3/modules/core/include/opencv2/core/cvdef.h:438,
 from /ros_files_comm_cv/src/opencv3/modules/core/include/opencv2/core.hpp:52,
 from /ros_files_comm_cv/src/opencv3/modules/highgui/include/opencv2/highgui.hpp:46,
 from /ros_files_comm_cv/src/opencv3/modules/highgui/src/precomp.hpp:45,
 from /ros_files_comm_cv/src/opencv3/modules/highgui/src/window.cpp:42:
/opt/gcc-linaro-7.2.1-2017.11-x86_64_arm-linux-gnueabihf/arm-linux-gnueabihf/include/c++/7.2.1/cstdlib:75:15: fatal error: stdlib.h: No such file or directory
 #include_next <stdlib.h>**
               ^~~~~~~~~~
compilation terminated.
modules/highgui/CMakeFiles/opencv_highgui.dir/build.make:83: recipe for target 'modules/highgui/CMakeFiles/opencv_highgui.dir/src/window.cpp.o' failed
make[2]: *** [modules/highgui/CMakeFiles/opencv_highgui.dir/src/window.cpp.o] Error 1
CMakeFiles/Makefile2:3404: recipe for target 'modules/highgui/CMakeFiles/opencv_highgui.dir/all' failed

My command looks like this:

sudo ./src/catkin/bin/catkin_make_isolated -DCMAKE_TOOLCHAIN_FILE=/toolchains/rostoolchain.cmake --install --install-space /opt/ros-arm -DCMAKE_BUILD_TYPE=Release -DCATKIN_ENABLE_TESTING=false -DWITH_1394=OFF -DWITH_CUDA=OFF -DBUILD_opencv_gpu=OFF -DBUILD_opencv_videoio=OFF -DENABLE_PRECOMPILED_HEADERS=OFF

My rostoolchain file looks like this:

#File: rostoolchain.cmake
set(CMAKE_SYSTEM_PROCESSOR arm)
set(CMAKE_LIBRARY_PATH /opt/gcc-linaro-7.2.1-2017.11-x86_64_arm-linux-gnueabihf/arm-linux-gnueabihf/libc/usr/lib/)
set(CMAKE_C_COMPILER /opt/gcc-linaro-7.2.1-2017.11-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-gcc)
set(CMAKE_CXX_COMPILER /opt/gcc-linaro-7.2.1-2017.11-x86_64_arm-linux-gnueabihf/bin/arm-linux-gnueabihf-g++)
set(CMAKE_FIND_ROOT_PATH /opt/gcc-linaro-7.2.1-2017.11-x86_64_arm-linux-gnueabihf/arm-linux-gnueabihf/libc)
set(CMAKE_INCLUDE_PATH /opt/gcc-linaro-7.2.1-2017.11-x86_64_arm-linux-gnueabihf/arm-linux-gnueabihf/libc/usr/include/)
set(CMAKE_C_FLAGS -I/opt/gcc-linaro-7.2.1-2017.11-x86_64_arm-linux-gnueabihf/arm-linux-gnueabihf/libc/usr/include)
#Have to set this one to BOTH, to allow CMake to find rospack
set(CMAKE_FIND_ROOT_PATH_MODE_PROGRAM NEVER)
set(CMAKE_FIND_ROOT_PATH_MODE_LIBRARY ONLY)
set(CMAKE_FIND_ROOT_PATH_MODE_INCLUDE ONLY)

I already found out that there was a problem when upgrading from GCC5 to GCC6. The problem was solved by adding -DENABLE_PRECOMPILED_HEADERS=OFF to the command. But this only shifts my error from 25% building to 62% building. When I remove the '_next' at

/opt/gcc-linaro-7.2.1-2017.11-x86_64_arm-linux-gnueabihf/arm-linux-gnueabihf/include/c++/7.2.1**/cstdlib:75:15

#include_next <stdlib.h>

everything works fine. But I need a solution that doesn't require a change in the toolchain. Maybe somebody is fighting with the same issue? Does anybody know another solution for my problem?