[mynewt-newt] 02/08: Execute custom commands from pkg directory

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ccollins pushed a commit to branch master
in repository https://gitbox.apache.org/repos/asf/mynewt-newt.git

commit 316b566f473f5ce38c33564925c1ca5b135f0284
Author: Christopher Collins <cc...@apache.org>
AuthorDate: Fri Oct 4 13:57:33 2019 -0700

    Execute custom commands from pkg directory
    
    E.g., if the following script exists:
    
        apps/blinky/scripts/run.sh
    
    then `apps/blinky/pkg.yml` can specify:
    
        pkg.pre_build_cmds:
            scripts/run.sh: 100
---
 newt/builder/extcmd.go | 10 ++++++++++
 1 file changed, 10 insertions(+)

diff --git a/newt/builder/extcmd.go b/newt/builder/extcmd.go
index b8e7746..8821e65 100644
--- a/newt/builder/extcmd.go
+++ b/newt/builder/extcmd.go
@@ -132,6 +132,16 @@ func (t *TargetBuilder) execExtCmds(sf stage.StageFunc, userSrcDir string,
 		toks[0] = cmd
 	}
 
+	// Execute the commands from the package's directory.
+	pwd, err := os.Getwd()
+	if err != nil {
+		return util.ChildNewtError(err)
+	}
+	if err := os.Chdir(sf.Pkg.BasePath()); err != nil {
+		return util.ChildNewtError(err)
+	}
+	defer os.Chdir(pwd)
+
 	util.StatusMessage(util.VERBOSITY_DEFAULT, "Executing %s\n", sf.Name)
 	if err := util.ShellInteractiveCommand(toks, envs, true); err != nil {
 		return err