GLM fails to build when using Clion - c++

Question

I am using the experimental GLM hash features in a CMake project.
Everything works fine unless the project is generated by Clion.
When building the Clion generated project GLM raises the error "GLM_GTX_hash requires C++11 standard library support" (see CMake logs) although C++11 is enabled.
Building the same, clion generated, project from a terminal fails with the same error.
However, when generating and building the project with cmake 'manually' (without Clion even knowing about it) everything works fine. As expected.
GLM is not directly included in the CMakeList. GLFW includes/imports it.
Example CMakeLists.txt
(...)
set(CMAKE_CXX_STANDARD 11)
add_executable(Test main.cpp)
(...)
add_subdirectory("glfw" ${CMAKE_CURRENT_BINARY_DIR}/glfw)
target_include_directories(Test PUBLIC ${GLFW_INCLUDE_DIRS})
target_link_libraries(Test ${GLFW_LIBRARIES} glfw)
Example main.cpp
#define GLM_FORCE_RADIANS
#define GLM_FORCE_DEPTH_ZERO_TO_ONE
#include <glm/glm.hpp>
#include <glm/gtc/matrix_transform.hpp>
#define GLM_ENABLE_EXPERIMENTAL
#include <glm/gtx/hash.hpp>
int main() {
return 0;
}
Clion build output:
/usr/bin/cmake --build /home/lukas/Test/cmake-build-debug --target Test -- -j 2
[ 89%] Built target glfw
Scanning dependencies of target Test
[ 94%] Building CXX object CMakeFiles/Test.dir/main.cpp.o
In file included from /home/lukas/Test/main.cpp:8:
/usr/include/glm/gtx/hash.hpp:46:3: error: "GLM_GTX_hash requires C++11 standard library support"
# error "GLM_GTX_hash requires C++11 standard library support"
^
1 error generated.
make[3]: *** [CMakeFiles/Test.dir/build.make:63: CMakeFiles/Test.dir/main.cpp.o] Error 1
make[2]: *** [CMakeFiles/Makefile2:73: CMakeFiles/Test.dir/all] Error 2
make[1]: *** [CMakeFiles/Makefile2:85: CMakeFiles/Test.dir/rule] Error 2
make: *** [Makefile:118: Test] Error 2
Terminal output (as expected)
$ cmake -H. -Bbuild -G "Unix Makefiles" && cmake --build build
Scanning dependencies of target glfw
[ 5%] Building C object glfw/src/CMakeFiles/glfw.dir/context.c.o
[ 10%] Building C object glfw/src/CMakeFiles/glfw.dir/init.c.o
[ 15%] Building C object glfw/src/CMakeFiles/glfw.dir/input.c.o
[ 21%] Building C object glfw/src/CMakeFiles/glfw.dir/monitor.c.o
[ 26%] Building C object glfw/src/CMakeFiles/glfw.dir/vulkan.c.o
[ 31%] Building C object glfw/src/CMakeFiles/glfw.dir/window.c.o
[ 36%] Building C object glfw/src/CMakeFiles/glfw.dir/x11_init.c.o
[ 42%] Building C object glfw/src/CMakeFiles/glfw.dir/x11_monitor.c.o
[ 47%] Building C object glfw/src/CMakeFiles/glfw.dir/x11_window.c.o
[ 52%] Building C object glfw/src/CMakeFiles/glfw.dir/xkb_unicode.c.o
[ 57%] Building C object glfw/src/CMakeFiles/glfw.dir/posix_time.c.o
[ 63%] Building C object glfw/src/CMakeFiles/glfw.dir/posix_thread.c.o
[ 68%] Building C object glfw/src/CMakeFiles/glfw.dir/glx_context.c.o
[ 73%] Building C object glfw/src/CMakeFiles/glfw.dir/egl_context.c.o
[ 78%] Building C object glfw/src/CMakeFiles/glfw.dir/osmesa_context.c.o
[ 84%] Building C object glfw/src/CMakeFiles/glfw.dir/linux_joystick.c.o
[ 89%] Linking C static library libglfw3.a
[ 89%] Built target glfw
Scanning dependencies of target Test
[ 94%] Building CXX object CMakeFiles/Test.dir/main.cpp.o
[100%] Linking CXX executable Test
[100%] Built target Test
Now I am actually curious about rather I messed up somewhere or if it is simply a bug. And if so, where should I report it?
[Clion/Jetbrains?, GLM?, GLFW?, CMake?]
Thanks in advance
Update
I am using the latest available (for me) builds:
CMake version: 3.14.4
Operating System: Arch Linux 5.0.18-1 x86_64 GNU/Linux
GLFW version/commit: d834f01c
GLM version/commit: fce2abd0
Clion: 2019.1.3
Clion EAP: 2019.2 EAP
Final update / 'Solution'
I just discovered that the problem is Clang, not Clion or anything else.
Clion simply defaulted to Clang (instead of GCC).
There are bug reports for GLM and Clang already existing (with potential fixes!):
https://github.com/g-truc/glm/issues/620
https://github.com/g-truc/glm/issues/646
Thank you very much everyone ~