From 99bc38ac6ebdd3b5d741cb9e50d842fa13d409f7 Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date: Tue, 12 May 2015 22:54:29 +0200
Subject: [PATCH] tools: use pkg-config when available to get SSL flags

Instead of hardcoding -lssl -lcrypto as the flags needed to build
mkimage with FIT signature enabled, use pkg-config when
available. This allows to properly support cases where static linking
is used, which requires linking with -lz, since OpenSSL uses zlib
internally.

We gracefully fallback on the previous behavior of hardcoding -lssl
-lcrypto if pkg-config is not available or fails with an error.

Patch submitted upstream at
http://lists.denx.de/pipermail/u-boot/2015-May/214489.html

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
 tools/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/Makefile b/tools/Makefile
index 4bbb153..8ff9c2e 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -122,7 +122,8 @@ endif
 
 # MXSImage needs LibSSL
 ifneq ($(CONFIG_MX23)$(CONFIG_MX28)$(CONFIG_FIT_SIGNATURE),)
-HOSTLOADLIBES_mkimage += -lssl -lcrypto
+HOSTLOADLIBES_mkimage += \
+	$(shell pkg-config --libs libssl libcrypto 2> /dev/null || echo "-lssl -lcrypto")
 endif
 
 HOSTLOADLIBES_dumpimage := $(HOSTLOADLIBES_mkimage)
-- 
2.1.0