[U-Boot] [PATCH v2 1/1] Fix musl build

[Jörg Krause]

This patch fixes cross-compiling U-Boot tools with the musl C library:
  * including <sys/types.h> is needed for ulong
  * defining _GNU_SOURCE is needed for loff_t

Tested for target at91sam9261ek_dataflash_cs3.

Signed-off-by: Jörg Krause <joerg.krause at embedded.rocks>
Cc: Tom Rini <trini at konsulko.com>
---
Changes v1 -> v2:
  - Fix header include in image.h (reported by Tom Rini)
---
 include/image.h    | 1 +
 tools/env/fw_env.c | 2 ++
 tools/imagetool.h  | 1 +
 tools/proftool.c   | 1 +
 4 files changed, 5 insertions(+)

diff --git a/include/image.h b/include/image.h
index 3844be6..60b924a 100644
--- a/include/image.h
+++ b/include/image.h
@@ -23,6 +23,7 @@
 struct lmb;
 
 #ifdef USE_HOSTCC
+#include <sys/types.h>
 
 /* new uImage format support enabled on host */
 #define CONFIG_FIT		1
diff --git a/tools/env/fw_env.c b/tools/env/fw_env.c
index 1173eea..daa02a7 100644
--- a/tools/env/fw_env.c
+++ b/tools/env/fw_env.c
@@ -8,6 +8,8 @@
  * SPDX-License-Identifier:	GPL-2.0+
  */
 
+#define _GNU_SOURCE
+
 #include <errno.h>
 #include <env_flags.h>
 #include <fcntl.h>
diff --git a/tools/imagetool.h b/tools/imagetool.h
index 3e15b4e..b7874f4 100644
--- a/tools/imagetool.h
+++ b/tools/imagetool.h
@@ -16,6 +16,7 @@
 #include <stdlib.h>
 #include <string.h>
 #include <sys/stat.h>
+#include <sys/types.h>
 #include <time.h>
 #include <unistd.h>
 #include <u-boot/sha1.h>
diff --git a/tools/proftool.c b/tools/proftool.c
index 3482951..9ce7a77 100644
--- a/tools/proftool.c
+++ b/tools/proftool.c
@@ -16,6 +16,7 @@
 #include <string.h>
 #include <unistd.h>
 #include <sys/param.h>
+#include <sys/types.h>
 
 #include <compiler.h>
 #include <trace.h>
-- 
2.3.5