3 files changed, 6 insertions, 0 deletions
diff --git a/src/linux/brk.c b/src/linux/brk.c
index ffdbbd52..a6173e07 100644
--- a/src/linux/brk.c
+++ b/src/linux/brk.c
@@ -1,3 +1,5 @@
+#define _BSD_SOURCE
+#include <unistd.h>
 #include <errno.h>
 #include "syscall.h"
 
diff --git a/src/linux/clone.c b/src/linux/clone.c
index b9e55945..8c1af7d3 100644
--- a/src/linux/clone.c
+++ b/src/linux/clone.c
@@ -1,5 +1,7 @@
+#define _GNU_SOURCE
 #include <stdarg.h>
 #include <unistd.h>
+#include <sched.h>
 #include "pthread_impl.h"
 #include "syscall.h"
 
diff --git a/src/linux/sbrk.c b/src/linux/sbrk.c
index 1e82d643..bb866305 100644
--- a/src/linux/sbrk.c
+++ b/src/linux/sbrk.c
@@ -1,3 +1,5 @@
+#define _BSD_SOURCE
+#include <unistd.h>
 #include <stdint.h>
 #include <errno.h>
 #include "syscall.h"