Question

What is a GNU-Make test for whether a system is Unix or Windows that works on both Unix and Windows?

For example, if the shell command foo always equals bizz on unix and buzz on windows, I could get this effect with the following in my makefile:

IS_UNIX := $(shell foo)

ifeq "$(IS_UNIX)" "bizz"
BUILD_ARCH := UNIX
else
BULID_ARCH := WINNT
endif

What command can act as foo?

Answer 1

This works for me (foo == ver):

IS_WINNT := $(shell ver)

ifeq "$(IS_WINNT)" ""
BUILD_ARCH := UNIX
else
BULID_ARCH := WINNT
endif