Convert Cygwin path to Windows path in a makefile

Question

How can I convert a Cygwin style path ( /cygdrive/c/foo/bar ) to Windows style ( C:/foo/bar ) (yes, with / going forward) in a GNU makefile? I have the situation of using Cygwin

Answer 1

Use the shell function to execute the cygpath utility with the -w flag.

Example:

BAR := /cygdrive/c/foo/bar
WIN_BAR := $(shell cygpath -w ${BAR})

cygpath accepts a lot of additional options. See the man page for details.