'libunwind.h' file not found

[charitha22]

I have already installed libunwind-dev package but getting this compiler error. Can someone help?

clang-6.0: warning: argument unused during compilation: '-L/usr/lib/x86_64-linux-gnu' [-Wunused-command-line-argument]
In file included from /home/charitha/workspace/ROCm_seperate/hcc/lib/mcwamp.cpp:18:
/home/charitha/workspace/ROCm_seperate/hcc/build/include/hc_rt_debug.h:6:10: fatal error: 'libunwind.h' file not found
#include <libunwind.h>
         ^~~~~~~~~~~~~
1 error generated.
lib/CMakeFiles/mcwamp.dir/build.make:62: recipe for target 'lib/CMakeFiles/mcwamp.dir/mcwamp.cpp.o' failed