diff --git a/include/image.h b/include/image.h
index 3844be67d8e014d9c80b6a0ce12cd2fe70faac1d..60b924a5b6feb43a78a16781699547a8d5485247 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 1173eea78206dca66942380f49df22aa5004ae48..daa02a760e3744b252269113f1784671ed2fb03f 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 3e15b4e22b9a0086c57d3bb6c61a2abe35838a31..b7874f47cd228f0a6aaf93f9098979f36a7ca5ca 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 348295198cd3d061dd8fc83baa10a6040f25e338..9ce7a7796e7f04b310eae4dc713d6c6a613e0acb 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>