package infrastructure: add LD_LIBRARY_PATH

During the compilation of target or host packages, host tools might be
used, and in turn, they might use host libraries installed in
$(HOST_DIR)/usr/lib. Therefore, we pass a LD_LIBRARY_PATH variable
when building packages.

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>

package/Makefile.in

@@ -236,7 +236,8 @@ TARGET_CONFIGURE_ENV=\
 	LDFLAGS="$(TARGET_LDFLAGS)" \
 	FCFLAGS="$(TARGET_FCFLAGS)" \
 
-TARGET_MAKE_ENV=PATH=$(TARGET_PATH)
+TARGET_MAKE_ENV=PATH=$(TARGET_PATH) \
+		LD_LIBRARY_PATH="$(HOST_DIR)/usr/lib:$(LD_LIBRARY_PATH)"
 
 HOST_CONFIGURE_OPTS=PATH=$(HOST_PATH) \
 		AR="$(HOSTAR)" \
@@ -277,6 +278,7 @@ HOST_CONFIGURE_OPTS=PATH=$(HOST_PATH) \
 		PKG_CONFIG_LIBDIR="$(HOST_DIR)/usr/lib/pkgconfig"
 
 HOST_MAKE_ENV=PATH=$(HOST_PATH) \
+		LD_LIBRARY_PATH="$(HOST_DIR)/usr/lib:$(LD_LIBRARY_PATH)" \
 		PKG_CONFIG="$(PKG_CONFIG_HOST_BINARY)" \
 		PKG_CONFIG_LIBDIR="$(HOST_DIR)/usr/lib/pkgconfig"