Error compilation using MinGW 64 on Windows 10

[Arritmic]

Hi,
Compiling the library for MinGW 64, it comes to this like and it fails:

farmhash/src/farmhash.h

Line 308 in 2f0e005

#elif defined(__linux__) || defined(__CYGWIN__) || defined( __GNUC__ ) || defined( __GNU_LIBRARY__ )

Error: "endian.h: No such file or directory"

I am using just the last MinGW 7.3.0 64

[geoffpike]

You can send me a fix, or you can workaround it by compiling with -D__LITTLE_ENDIAN__ or similar.

[Arritmic]

@geoffpike I have requested a "pull-request" for a one possible solution. I have tested it using on Windows 10 five different compilers: MVSC 2015 64, MVSC 2017 64, MVSC 2017 32, MinGW 7.3.0 64 and MinGW 7.3.0 32.

When you are in Windows and MinGW is used is being detected for the macro defined( GNUC ).