/usr/include/smbios_c/ is in libsmbios-dev 2.3.1-1+b1.
This file is owned by root:root, with mode 0o755.
..
/usr/include/smbios_c/cmos.h
/usr/include/smbios_c/compat.h
/usr/include/smbios_c/config/
/usr/include/smbios_c/config/README
/usr/include/smbios_c/config/abi/
/usr/include/smbios_c/config/abi/msvc_prefix.h
/usr/include/smbios_c/config/abi/msvc_suffix.h
/usr/include/smbios_c/config/abi_prefix.h
/usr/include/smbios_c/config/abi_suffix.h
/usr/include/smbios_c/config/auto_link.h
/usr/include/smbios_c/config/boost_LICENSE_1_0_txt
/usr/include/smbios_c/config/compiler/
/usr/include/smbios_c/config/compiler/gcc.h
/usr/include/smbios_c/config/compiler/sunpro_cc.h
/usr/include/smbios_c/config/compiler/visualc.h
/usr/include/smbios_c/config/get_config.h
/usr/include/smbios_c/config/platform/
/usr/include/smbios_c/config/platform/linux.h
/usr/include/smbios_c/config/platform/solaris.h
/usr/include/smbios_c/config/platform/win32.h
/usr/include/smbios_c/config/platform/win64.h
/usr/include/smbios_c/config/select_compiler_config.h
/usr/include/smbios_c/config/select_platform_config.h
/usr/include/smbios_c/config/suffix.h
/usr/include/smbios_c/config/user.h
/usr/include/smbios_c/memory.h
/usr/include/smbios_c/obj/
/usr/include/smbios_c/obj/cmos.h
/usr/include/smbios_c/obj/memory.h
/usr/include/smbios_c/obj/smbios.h
/usr/include/smbios_c/obj/smi.h
/usr/include/smbios_c/obj/token.h
/usr/include/smbios_c/smbios.h
/usr/include/smbios_c/smi.h
/usr/include/smbios_c/system_info.h
/usr/include/smbios_c/token.h
/usr/include/smbios_c/types.h