6 files changed, 5 insertions, 11 deletions
diff --git a/src/env/__libc_start_main.c b/src/env/__libc_start_main.c
index c1b0669..58da9e8 100644
--- a/src/env/__libc_start_main.c
+++ b/src/env/__libc_start_main.c
@@ -2,12 +2,11 @@
 #include <poll.h>
 #include <fcntl.h>
 #include <signal.h>
+#include <unistd.h>
 #include "syscall.h"
 #include "atomic.h"
 #include "libc.h"
 
-void __init_tls(size_t *);
-
 static void dummy(void) {}
 weak_alias(dummy, _init);
 
diff --git a/src/env/clearenv.c b/src/env/clearenv.c
index da18775..2e275b4 100644
--- a/src/env/clearenv.c
+++ b/src/env/clearenv.c
@@ -1,5 +1,6 @@
 #define _GNU_SOURCE
 #include <stdlib.h>
+#include <unistd.h>
 #include "libc.h"
 
 static void dummy(char *old, char *new) {}
diff --git a/src/env/getenv.c b/src/env/getenv.c
index cf34672..f279779 100644
--- a/src/env/getenv.c
+++ b/src/env/getenv.c
@@ -1,9 +1,8 @@
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 #include "libc.h"
 
-char *__strchrnul(const char *, int);
-
 char *getenv(const char *name)
 {
 	size_t l = __strchrnul(name, '=') - name;
diff --git a/src/env/putenv.c b/src/env/putenv.c
index fa4a4dd..20f9602 100644
--- a/src/env/putenv.c
+++ b/src/env/putenv.c
@@ -1,9 +1,8 @@
 #include <stdlib.h>
 #include <string.h>
+#include <unistd.h>
 #include "libc.h"
 
-char *__strchrnul(const char *, int);
-
 static void dummy(char *old, char *new) {}
 weak_alias(dummy, __env_rm_add);
 
diff --git a/src/env/setenv.c b/src/env/setenv.c
index a7dd2b6..c5226b6 100644
--- a/src/env/setenv.c
+++ b/src/env/setenv.c
@@ -2,9 +2,6 @@
 #include <string.h>
 #include <errno.h>
 
-char *__strchrnul(const char *, int);
-int __putenv(char *, size_t, char *);
-
 void __env_rm_add(char *old, char *new)
 {
 	static char **env_alloced;
diff --git a/src/env/unsetenv.c b/src/env/unsetenv.c
index 8630e2d..471219e 100644
--- a/src/env/unsetenv.c
+++ b/src/env/unsetenv.c
@@ -1,10 +1,9 @@
 #include <stdlib.h>
 #include <string.h>
 #include <errno.h>
+#include <unistd.h>
 #include "libc.h"
 
-char *__strchrnul(const char *, int);
-
 static void dummy(char *old, char *new) {}
 weak_alias(dummy, __env_rm_add);