From 8b34aaf628b0d1f91f68afe0067a2c7fb716c585 Mon Sep 17 00:00:00 2001
From: Hui Zhu <teawater@hyper.sh>
Date: Fri, 5 Apr 2019 21:04:36 +0800
Subject: [PATCH] make: Add build option STATIC=1 to statically link

Add build option STATIC=1 to statically link kata-agent.

Fixes: #522

Signed-off-by: Hui Zhu <teawater@hyper.sh>
---
 Makefile | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/Makefile b/Makefile
index 6b7e1771fd..6a331e760e 100644
--- a/Makefile
+++ b/Makefile
@@ -79,7 +79,11 @@ else
     SECCOMP=no
 endif
 # go build common flags
-BUILDFLAGS := -buildmode=pie
+ifdef STATIC
+	LDFLAGS := -extldflags '-static'
+else
+	BUILDFLAGS := -buildmode=pie
+endif
 
 # args for building agent image
 BUILDARGS := $(if $(http_proxy), --build-arg http_proxy=$(http_proxy))
@@ -90,7 +94,7 @@ AGENT_TAG := $(if $(COMMIT_NO_SHORT),$(COMMIT_NO_SHORT),dev)
 
 $(TARGET): $(GENERATED_FILES) $(SOURCES) $(VERSION_FILE)
 	go build $(BUILDFLAGS) -tags "$(BUILDTAGS)" -o $@ \
-		-ldflags "-X main.version=$(VERSION_COMMIT) -X main.seccompSupport=$(SECCOMP)"
+		-ldflags "-X main.version=$(VERSION_COMMIT) -X main.seccompSupport=$(SECCOMP) $(LDFLAGS)"
 
 install:
 	install -D $(TARGET) $(DESTDIR)$(BINDIR)/$(TARGET)