From 06747eaca2f34ae0717566d9267ffd1229444210 Mon Sep 17 00:00:00 2001
From: Tobias Gruetzmacher <tobias-git@23.gs>
Date: Thu, 26 Feb 2015 15:42:26 +0100
Subject: [PATCH] Add a new makefile target to cache versions.

All package versions are written int one JSON file.
---
 .gitignore |  1 +
 Makefile   | 11 ++++++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/.gitignore b/.gitignore
index 4309bcfa..2a1a55db 100644
--- a/.gitignore
+++ b/.gitignore
@@ -4,5 +4,6 @@
 /gits/
 /log*/
 /pkg
+/versions.json
 /wip/
 /tmp-*
diff --git a/Makefile b/Makefile
index 64f30980..82fee8a6 100644
--- a/Makefile
+++ b/Makefile
@@ -507,7 +507,7 @@ show-upstream-deps-%:
 
 .PHONY: clean
 clean:
-	rm -rf $(call TMP_DIR,*) $(PREFIX) build-matrix.html
+	rm -rf $(call TMP_DIR,*) $(PREFIX) build-matrix.html versions.json
 
 .PHONY: clean-pkg
 clean-pkg:
@@ -663,3 +663,12 @@ build-matrix.html: $(foreach PKG,$(PKGS), $(TOP_DIR)/src/$(PKG).mk)
 	@echo '</table>'                        >> $@
 	@echo '</body>'                         >> $@
 	@echo '</html>'                         >> $@
+
+
+versions.json: $(foreach PKG,$(PKGS), $(TOP_DIR)/src/$(PKG).mk)
+	@echo '{'                         > $@
+	@{$(foreach PKG,$(PKGS),          \
+	    echo '    "$(PKG)":           \
+	        "$($(PKG)_VERSION)",';)} >> $@
+	@echo '    "": null'             >> $@
+	@echo '}'                        >> $@