From b615a1555ea2f1e751bee5a042d4433245330cf0 Mon Sep 17 00:00:00 2001
From: Gerd Hoffmann <kraxel@redhat.com>
Date: Wed, 1 Jun 2011 09:18:06 +0200
Subject: libjpeg version sanity check

---
 GNUmakefile | 8 ++++++--
 jpeg/README | 3 +++
 2 files changed, 9 insertions(+), 2 deletions(-)

diff --git a/GNUmakefile b/GNUmakefile
index 1a3aed4..1ef958b 100644
--- a/GNUmakefile
+++ b/GNUmakefile
@@ -186,8 +186,12 @@ fbi: $(OBJS_FBI) $(OBJS_READER)
 ########################################################################
 # general rules
 
-.PHONY: build install clean distclean realclean
-build: $(TARGETS)
+.PHONY: check-libjpeg build install clean distclean realclean
+build: check-libjpeg $(TARGETS)
+
+check-libjpeg:
+	@test -d jpeg/$(JPEG_VER) || \
+		( echo "Need files from libjpeg $(JPEG_VER) in jpeg/"; false)
 
 install: build
 	$(INSTALL_DIR) $(bindir)
diff --git a/jpeg/README b/jpeg/README
index 76e7464..0d36ad6 100644
--- a/jpeg/README
+++ b/jpeg/README
@@ -1,2 +1,5 @@
 some source files copyed over from
 The Independent JPEG Group's JPEG software
+
+There is a subdirectory for each JPEG_LIB_VERSION to handle
+incompatible data structures of the jpeg library versions.
-- 
cgit