Thanks. I agree that running arbitrary code in #cgo directives is a bad 
idea :)
I'll probably document asking to 
export CGO_CFLAGS="-I $(python -c 'import numpy; 
print(numpy.get_include())')"
before running "go get"

On Monday, August 10, 2020 at 4:06:54 AM UTC+3, Ian Lance Taylor wrote:
>
> On Sun, Aug 9, 2020 at 9:57 AM Miki Tebeka <[email protected] 
> <javascript:>> wrote: 
> > 
> > Is there a way to pass include path dynamically to cgo? 
> > 
> > I'm working with numpy and the way to find the include directory is to 
> call (in Python) 
> > numpy.get_include() 
> > 
> > In a Makefile I can run go build with 
> > CGO_CFLAGS=-I $(shell python -c 'import numpy; 
> print(numpy.get_include())') go build 
> > 
> > but I don't know how to do it as a 
> > #cgo CFLAGS: 
> > directive and I'd like to have the module go gettable 
>
> The usual approach is to use "#cgo pkg-config:".  But that assumes 
> that numpy provides pkg-config definitions.  There isn't any other 
> support for dynamic dependencies specified in the Go input file.  In 
> particular we don't and won't permit running arbitrary programs in a 
> #cgo line. 
>
> Ian 
>

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