--- /dev/null
+From 7f47f7f8c1a0d634e9febad61504f095476fccc0 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/214068.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..e1bcd59 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 2> /dev/null || echo "-lssl -lcrypto")
+ endif
+
+ HOSTLOADLIBES_dumpimage := $(HOSTLOADLIBES_mkimage)
+--
+2.1.0
+
endef
define UBOOT_TOOLS_BUILD_CMDS
- $(MAKE) -C $(@D) \
+ $(TARGET_MAKE_ENV) $(MAKE) -C $(@D) \
CROSS_COMPILE="$(TARGET_CROSS)" \
CFLAGS="$(TARGET_CFLAGS)" \
LDFLAGS="$(TARGET_LDFLAGS)" \
CROSS_BUILD_TOOLS=y \
CONFIG_FIT_SIGNATURE=$(BR2_PACKAGE_UBOOT_TOOLS_MKIMAGE_FIT_SIGNATURE_SUPPORT) \
tools-only
- $(MAKE) -C $(@D) \
+ $(TARGET_MAKE_ENV) $(MAKE) -C $(@D) \
CROSS_COMPILE="$(TARGET_CROSS)" \
CFLAGS="$(TARGET_CFLAGS)" \
LDFLAGS="$(TARGET_LDFLAGS)" \
$(INSTALL) -m 0755 -D $(@D)/tools/mkimage $(TARGET_DIR)/usr/bin/mkimage
endef
ifeq ($(BR2_PACKAGE_UBOOT_TOOLS_MKIMAGE_FIT_SIGNATURE_SUPPORT),y)
-UBOOT_TOOLS_DEPENDENCIES += openssl
+UBOOT_TOOLS_DEPENDENCIES += openssl host-pkgconf
endif # BR2_PACKAGE_UBOOT_TOOLS_MKIMAGE_FIT_SIGNATURE_SUPPORT
endif # BR2_PACKAGE_UBOOT_TOOLS_MKIMAGE