在CGO中定义变量

Question

I want, at build time, to define a string variable in cgo. None of the following approaches works.

1. #cgo CFLAGS: -DLOG="common"  
   

   'common' undeclared (first use in this function)

2. #cgo CFLAGS: -DLOG=common
   

   'common' undeclared (first use in this function)

3. #cgo CFLAGS: -DLOG=\"common\"
   

   malformed #cgo argument: -DLOG="common"

Answer 1

It appears this is not possible as cgo does some mangling/parsing -- can you get away with just a normal #define LOG "common" (i.e. not use the CGO special flags).

Or failing that You can invoke go run/go build like this: CGO_CFLAGS='-DLOG="common"' go run so.go