[U-Boot] [PATCH] mkimage: check environment for dtc binary location

[Hauke Mehrtens]

Currently mkimage assumes the dtc binary is in the path and fails
otherwise. This patch makes it check the DTC environment variable first
for the dtc binary and then fall back to the default path. This makes
it possible to call the u-boot build with make DTC=... and build a fit
image with the dtc binary not being the the default path.

Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
Cc: Simon Glass <sjg at chromium.org>
---
 tools/fit_image.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/tools/fit_image.c b/tools/fit_image.c
index 4dc8bd8862..d7a7b07faf 100644
--- a/tools/fit_image.c
+++ b/tools/fit_image.c
@@ -647,9 +647,14 @@ static int fit_handle_file(struct image_tool_params *params)
 		}
 		*cmd = '\0';
 	} else if (params->datafile) {
+		const char* dtc = getenv("DTC");
+
+		if (!dtc)
+			dtc = MKIMAGE_DTC;
+
 		/* dtc -I dts -O dtb -p 500 datafile > tmpfile */
 		snprintf(cmd, sizeof(cmd), "%s %s %s > %s",
-			 MKIMAGE_DTC, params->dtc, params->datafile, tmpfile);
+			 dtc, params->dtc, params->datafile, tmpfile);
 		debug("Trying to execute \"%s\"\n", cmd);
 	} else {
 		snprintf(cmd, sizeof(cmd), "cp %s %s",
-- 
2.11.0