From 2c9faa70ea36e40bd787915215e8165b9c7328d9 Mon Sep 17 00:00:00 2001
From: Anshul Maheshwari <anshul.ffmpeg@gmail.com>
Date: Wed, 7 Jan 2015 19:57:57 +0100
Subject: [PATCH] give error message with ENABLE_OCR

---
 linux/Makefile | 26 +++++++++++++++++++++++---
 1 file changed, 23 insertions(+), 3 deletions(-)

diff --git a/linux/Makefile b/linux/Makefile
index 9471b4c5..6e2a7c1d 100644
--- a/linux/Makefile
+++ b/linux/Makefile
@@ -42,11 +42,31 @@ INSTLALL_PROGRAM = $(INSTLALL)
 DESTDIR = /usr/bin
 
 ifeq ($(ENABLE_OCR),yes)
-CFLAGS+=-I/usr/local/include/tesseract -I/usr/local/include/leptonica
 CFLAGS+=-DENABLE_OCR
-LDFLAGS+= $(shell pkg-config --libs tesseract)
-LDFLAGS+= $(shell pkg-config --libs lept)
+TESS_LDFLAGS+= $(shell pkg-config --libs tesseract)
+LEPT_LDFLAGS+= $(shell pkg-config --libs lept)
+
+#error checking of library are there or not
+ifeq ($(TESS_LDFLAGS),$(EMPTY))
+$(error **ERROR** "tesseract not found")
+else
+#TODO print the version of library found
+$(info  "tesseract found")
 endif
+ifeq ($(LEPT_LDFLAGS),$(EMPTY))
+$(error **ERROR** "leptonica not found")
+else
+#TODO print the version of library found
+$(info  "Leptonica found")
+endif
+
+CFLAGS  += $(shell pkg-config --cflags tesseract)
+CFLAGS  += $(shell pkg-config --cflags lept)
+LDFLAGS += $(TESS_LDFLAGS)
+LDFLAGS += $(LEPT_LDFLAGS)
+endif
+
+
 ifeq ($(ENABLE_FFMPEG),yes)
 CFLAGS+=-DENABLE_FFMPEG
 CFLAGS+= $(shell pkg-config --cflags libavcodec)