From a38248fa83c8773b78bf7727123c4e4f2c0b2463 Mon Sep 17 00:00:00 2001
From: kYc0o <fco.ja.ac@gmail.com>
Date: Mon, 23 Jan 2017 14:56:22 +0100
Subject: [PATCH] f dist/tools/nacl_key_generator: use git instead of local
 tweetnacl copy

---
 dist/tools/nacl_key_generator/.gitignore |  2 ++
 dist/tools/nacl_key_generator/Makefile   | 11 ++++++++++-
 2 files changed, 12 insertions(+), 1 deletion(-)
 create mode 100644 dist/tools/nacl_key_generator/.gitignore

diff --git a/dist/tools/nacl_key_generator/.gitignore b/dist/tools/nacl_key_generator/.gitignore
new file mode 100644
index 0000000000000..6f47d3a1fe467
--- /dev/null
+++ b/dist/tools/nacl_key_generator/.gitignore
@@ -0,0 +1,2 @@
+/git-fetch-tweetnacl
+tweetnacl
\ No newline at end of file
diff --git a/dist/tools/nacl_key_generator/Makefile b/dist/tools/nacl_key_generator/Makefile
index ec999327ce054..64cde36250335 100644
--- a/dist/tools/nacl_key_generator/Makefile
+++ b/dist/tools/nacl_key_generator/Makefile
@@ -4,6 +4,9 @@ TWEETNACL_INCLUDE := tweetnacl
 TWEETNACL_DIR := tweetnacl
 TWEETNACL_SRC := $(TWEETNACL_DIR)/tweetnacl.c randombytes.c
 KEYPAIR_SRC := generate-nacl-keys.c $(TWEETNACL_SRC)
+GITCACHE = ../git/git-cache
+TWEETNACL_URL = https://github.com/RIOT-OS/tweetnacl.git
+TWEETNACL_VERSION = 7ea05c7098a16c87fa66e9166ce301666f3f2623
 
 CFLAGS += -g -O3 -Wall -Wextra -pedantic -std=c99
 
@@ -12,7 +15,13 @@ all: bin bin/generate-nacl-keys
 bin:
 	mkdir bin
 
-bin/generate-nacl-keys:
+git-fetch-tweetnacl:
+	rm -Rf $(TWEETNACL_DIR)
+	mkdir -p $(TWEETNACL_DIR)
+	$(GITCACHE) clone "$(TWEETNACL_URL)" "$(TWEETNACL_VERSION)" "$(TWEETNACL_DIR)"
+	touch $@
+
+bin/generate-nacl-keys: git-fetch-tweetnacl
 	$(CC) $(CFLAGS) -I$(TWEETNACL_INCLUDE) $(KEYPAIR_SRC) -o $@
 
 clean: