/usr/lib/x86_64-linux-gnu/ruby/vendor_ruby/2.3.0/narray_config.h is in ruby-narray 0.6.1.1-2+b3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 | #define HAVE_STDINT_H 1
#define HAVE_U_INT8_T 1
#define HAVE_UINT8_T 1
#define HAVE_INT16_T 1
#define HAVE_INT32_T 1
#define HAVE_U_INT32_T 1
#define HAVE_UINT32_T 1
|