CODEWITHSUNDEEP
f#f#-fake
awright18
awright18

Reputation: 2333

Can I pass a parameter to a F# FAKE build script?

I'm just getting started with FAKE. I really like the idea. In the tutorials the set the build and deploy directories.

// Directories
let buildDir  = "./build/"
let testDir   = "./test/"
let deployDir = "./deploy/"

and then later reference those which is fine, but is it possible to pass that as a parameter? Maybe to as Task where I can use it later?

Upvotes: 27

Views: 5718

Answers (3)

PiotrWolkowski
PiotrWolkowski

Reputation: 8782

Non of the above fully worked for me. Below an adjusted solution.
The console command needs to be run with the -e flag:

"..\fake.exe" "build.fsx" -e dir=sample/directory

The build script is using Environment.environVarOrDefault "dir" "default\directory":

let buildDir = Environment.environVarOrDefault "dir" "default\directory"

Environment.environVar can also be used if no alternative is provided.

Finally the build script has to run with Target.runOrDefaultWithArguments. It will fail if it's executed with Target.runOrDefault:

// start build
Target.runOrDefaultWithArguments "DefaultBuildTarget"

Upvotes: 2

mac10688
mac10688

Reputation: 2205

This answer accepted doesn't seem to work for FAKE 5.

You will want to set the environment variable before running the script.

dir=my/custom/dir/ ./fake.sh run build.fsx

As linked in the comments above.

http://www.github.com/fsharp/FAKE/issues/2125#issuecomment-427684505

Upvotes: 0

danmiser
danmiser

Reputation: 1083

Something like this should work.

From the command-line:

"..\packages\Fake.3.7.5\tools\Fake.exe" "build.fsx" dir=my/custom/dir/

In the build.fsx script:

let buildDir = getBuildParamOrDefault "dir" "./build/"

That will look for the dir parameter being passed in, and use it if it's assigned, otherwise it will default to ./build/

Upvotes: 42

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