[PATCH 2/2] tools/fit_check_sign: make the module dependent on CONFIG_FIT_SIGNATURE

[Shiji Yang]

The function definition of fit_check_sign() is guarded by
"#ifdef CONFIG_FIT_SIGNATURE" in "tools/image-host.c". If we try
to build it without CONFIG_FIT_SIGNATURE, we will get an error:

/usr/bin/ld: tools/fit_check_sign.o: in function `main':
fit_check_sign.c:(.text.startup+0x165): undefined reference to `fit_check_sign'
collect2: error: ld returned 1 exit status

Fixes: 9c79c8fe70da ("tools/fit_check_sign: make key optional")
Signed-off-by: Shiji Yang <yangshiji66 at outlook.com>
---
 tools/Makefile | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tools/Makefile b/tools/Makefile
index 97ce1dbb17e..02297e8c93a 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -63,7 +63,8 @@ HOSTCFLAGS_img2srec.o := -pedantic
 hostprogs-y += mkenvimage
 mkenvimage-objs := mkenvimage.o os_support.o generated/lib/crc32.o
 
-hostprogs-y += dumpimage mkimage fit_info fit_check_sign
+hostprogs-y += dumpimage mkimage fit_info
+hostprogs-$(CONFIG_FIT_SIGNATURE) += fit_check_sign
 hostprogs-$(CONFIG_TOOLS_LIBCRYPTO) += fdt_add_pubkey
 hostprogs-$(CONFIG_TOOLS_LIBCRYPTO) += preload_check_sign
 
-- 
2.50.0