[PATCH u-boot-mvebu 01/31] tools: kwbimage: Fix compilation without CONFIG_SYS_U_BOOT_OFFS

[Marek Behún]

From: Pali Rohár <pali at kernel.org>

The CONFIG_SYS_U_BOOT_OFFS option may be defined as empty string.
In this case it causes compilation error:

    tools/kwbimage.c: In function ‘image_headersz_v1’:
    tools/kwbimage.c:1002:39: error: expected expression before ‘)’ token
      if (headersz > CONFIG_SYS_U_BOOT_OFFS) {
                                           ^
    tools/kwbimage.c:1006:41: error: expected expression before ‘)’ token
        (int)headersz, CONFIG_SYS_U_BOOT_OFFS);
                                             ^
    tools/kwbimage.c:1011:35: error: expected expression before ‘;’ token
      headersz = CONFIG_SYS_U_BOOT_OFFS;
                                       ^
    make[1]: *** [scripts/Makefile.host:112: tools/kwbimage.o] Error 1
    make: *** [Makefile:1822: tools] Error 2

Check whether the value of CONFIG_SYS_U_BOOT_OFFS is really set.

Signed-off-by: Pali Rohár <pali at kernel.org>
Reviewed-by: Marek Behún <marek.behun at nic.cz>
---
 tools/Makefile | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/Makefile b/tools/Makefile
index d020c55d66..fadf3135d6 100644
--- a/tools/Makefile
+++ b/tools/Makefile
@@ -155,7 +155,7 @@ ifdef CONFIG_FIT_CIPHER
 HOST_EXTRACFLAGS	+= -DCONFIG_FIT_CIPHER
 endif
 
-ifdef CONFIG_SYS_U_BOOT_OFFS
+ifneq ($(CONFIG_SYS_U_BOOT_OFFS),)
 HOSTCFLAGS_kwbimage.o += -DCONFIG_SYS_U_BOOT_OFFS=$(CONFIG_SYS_U_BOOT_OFFS)
 endif
 
-- 
2.31.1