From b2fcbaeb490614650a8d2051e399acc41e4b0041 Mon Sep 17 00:00:00 2001
From: Carlos Alexandro Becker <caarlos0@gmail.com>
Date: Wed, 22 Feb 2017 09:25:43 -0300
Subject: [PATCH 1/2] support for custom build flags

---
 README.md               | 7 ++++++-
 config/config.go        | 1 +
 pipeline/build/build.go | 6 +++++-
 3 files changed, 12 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 57bf1b2e4..0ff4200e4 100644
--- a/README.md
+++ b/README.md
@@ -169,9 +169,14 @@ build:
   # Default is `main.go`
   main: ./cmd/main.go
 
-  # Name of the binary. Default is the name of the project directory.
+  # Name of the binary.
+  # Default is the name of the project directory.
   binary_name: program
 
+  # Custom build tags.
+  # Default is empty
+  flags: -tags dev
+
   # Custom ldflags.
   # Default is `-s -w`
   ldflags: -s -w
diff --git a/config/config.go b/config/config.go
index a6244523b..d3e9132c1 100644
--- a/config/config.go
+++ b/config/config.go
@@ -28,6 +28,7 @@ type Build struct {
 	Goarch     []string
 	Main       string
 	Ldflags    string
+	Flags      string
 	BinaryName string `yaml:"binary_name"`
 	Hooks      Hooks
 }
diff --git a/pipeline/build/build.go b/pipeline/build/build.go
index 9b3f7bd77..3cbf3fe9e 100644
--- a/pipeline/build/build.go
+++ b/pipeline/build/build.go
@@ -49,7 +49,11 @@ func build(name, goos, goarch string, ctx *context.Context) error {
 			return err
 		}
 	}
-	cmd := []string{"go", "build", "-ldflags=" + ldflags, "-o", output, ctx.Config.Build.Main}
+	cmd := []string{"go", "build"}
+	if ctx.Config.Build.Flags != "" {
+		cmd = append(cmd, strings.Split(ctx.Config.Build.Flags, " ")...)
+	}
+	cmd = append(cmd, "-ldflags="+ldflags, "-o", output, ctx.Config.Build.Main)
 	if err := run(goos, goarch, cmd); err != nil {
 		return err
 	}

From 4bee6161210c18b0805a207b50fe2aecf036477b Mon Sep 17 00:00:00 2001
From: Carlos Alexandro Becker <caarlos0@gmail.com>
Date: Thu, 23 Feb 2017 09:27:54 -0300
Subject: [PATCH 2/2] using strings.Split

---
 pipeline/build/build.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/pipeline/build/build.go b/pipeline/build/build.go
index 3cbf3fe9e..cb1b7796f 100644
--- a/pipeline/build/build.go
+++ b/pipeline/build/build.go
@@ -51,7 +51,7 @@ func build(name, goos, goarch string, ctx *context.Context) error {
 	}
 	cmd := []string{"go", "build"}
 	if ctx.Config.Build.Flags != "" {
-		cmd = append(cmd, strings.Split(ctx.Config.Build.Flags, " ")...)
+		cmd = append(cmd, strings.Fields(ctx.Config.Build.Flags)...)
 	}
 	cmd = append(cmd, "-ldflags="+ldflags, "-o", output, ctx.Config.Build.Main)
 	if err := run(goos, goarch, cmd); err != nil {