diff --git a/ldso/dynlink.c b/ldso/dynlink.c
index f78a02e62fcaf96b32ab8631e46895879ec67b63..7200c8178ec114a8efd2217f885f699cfbc3acc5 100644
--- a/ldso/dynlink.c
+++ b/ldso/dynlink.c
@@ -299,8 +299,6 @@ static struct symdef find_sym(struct dso *dso, const char *s, int need_def)
 	return def;
 }
 
-hidden ptrdiff_t __tlsdesc_static(), __tlsdesc_dynamic();
-
 static void do_relocs(struct dso *dso, size_t *rel, size_t rel_size, size_t stride)
 {
 	unsigned char *base = dso->base;
@@ -2048,8 +2046,6 @@ int dl_iterate_phdr(int(*callback)(struct dl_phdr_info *info, size_t size, void
 	return ret;
 }
 
-hidden void __dl_vseterr(const char *, va_list);
-
 static void error(const char *fmt, ...)
 {
 	va_list ap;
diff --git a/src/internal/dynlink.h b/src/internal/dynlink.h
index 5717627a53575f214f1246b29b7c148e41437532..90b6e481d5158612029f7e1e71c80006ee28faf7 100644
--- a/src/internal/dynlink.h
+++ b/src/internal/dynlink.h
@@ -4,6 +4,8 @@
 #include <features.h>
 #include <elf.h>
 #include <stdint.h>
+#include <stddef.h>
+#include "libc.h"
 
 #if UINTPTR_MAX == 0xffffffff
 typedef Elf32_Ehdr Ehdr;
@@ -95,4 +97,12 @@ struct fdpic_dummy_loadmap {
 typedef void (*stage2_func)(unsigned char *, size_t *);
 typedef _Noreturn void (*stage3_func)(size_t *);
 
+hidden void *__dlsym(void *restrict, const char *restrict, void *restrict);
+
+hidden void __dl_seterr(const char *, ...);
+hidden int __dl_invalid_handle(void *);
+hidden void __dl_vseterr(const char *, va_list);
+
+hidden ptrdiff_t __tlsdesc_static(), __tlsdesc_dynamic();
+
 #endif
diff --git a/src/ldso/__dlsym.c b/src/ldso/__dlsym.c
index bf99dff8adc9d1db18abef84b694cb5d15cf24a1..012994a77d5728d3f5d36ac72a2c0e87460f46a5 100644
--- a/src/ldso/__dlsym.c
+++ b/src/ldso/__dlsym.c
@@ -1,8 +1,7 @@
 #include <dlfcn.h>
+#include "dynlink.h"
 #include "libc.h"
 
-hidden void __dl_seterr(const char *, ...);
-
 static void *stub_dlsym(void *restrict p, const char *restrict s, void *restrict ra)
 {
 	__dl_seterr("Symbol not found: %s", s);
diff --git a/src/ldso/dlclose.c b/src/ldso/dlclose.c
index a774209d9cfa96563760a86ff97578dccba85f14..b839fe2f11298e46d36bb355d4f1295007a89dab 100644
--- a/src/ldso/dlclose.c
+++ b/src/ldso/dlclose.c
@@ -1,8 +1,7 @@
 #include <dlfcn.h>
+#include "dynlink.h"
 #include "libc.h"
 
-hidden int __dl_invalid_handle(void *);
-
 int dlclose(void *p)
 {
 	return __dl_invalid_handle(p);
diff --git a/src/ldso/dlerror.c b/src/ldso/dlerror.c
index c8c718ab3ccf5ec306f98c54ebb61ac295e4f24c..7e5ec23d7e1ac2426c04242c2a851068f04083cd 100644
--- a/src/ldso/dlerror.c
+++ b/src/ldso/dlerror.c
@@ -2,6 +2,7 @@
 #include <stdlib.h>
 #include <stdarg.h>
 #include "pthread_impl.h"
+#include "dynlink.h"
 #include "libc.h"
 
 char *dlerror()
@@ -50,8 +51,6 @@ hidden void __dl_seterr(const char *fmt, ...)
 	va_end(ap);
 }
 
-hidden int __dl_invalid_handle(void *);
-
 static int stub_invalid_handle(void *h)
 {
 	__dl_seterr("Invalid library handle %p", (void *)h);
diff --git a/src/ldso/dlinfo.c b/src/ldso/dlinfo.c
index 1e2c550082f645c1c057844b2d58c5abf5cace49..a8a5ad567234922d72d389d064cee41a8ff4ca2f 100644
--- a/src/ldso/dlinfo.c
+++ b/src/ldso/dlinfo.c
@@ -1,11 +1,8 @@
 #define _GNU_SOURCE
 #include <dlfcn.h>
+#include "dynlink.h"
 #include "libc.h"
 
-hidden int __dl_invalid_handle(void *);
-
-hidden void __dl_seterr(const char *, ...);
-
 int dlinfo(void *dso, int req, void *res)
 {
 	if (__dl_invalid_handle(dso)) return -1;
diff --git a/src/ldso/dlopen.c b/src/ldso/dlopen.c
index 6b1d792a3abb5519957733dc4bab188eb31ecfef..9544741bf353e449c592f76e48a56624bd4eca9c 100644
--- a/src/ldso/dlopen.c
+++ b/src/ldso/dlopen.c
@@ -1,8 +1,7 @@
 #include <dlfcn.h>
+#include "dynlink.h"
 #include "libc.h"
 
-hidden void __dl_seterr(const char *, ...);
-
 static void *stub_dlopen(const char *file, int mode)
 {
 	__dl_seterr("Dynamic loading not supported");
diff --git a/src/ldso/dlsym.c b/src/ldso/dlsym.c
index c0f50e923b857d5e359fce641f0c6e0e77d81245..65eb27659f7b6abecb33d93db6c3fa12d82e08ee 100644
--- a/src/ldso/dlsym.c
+++ b/src/ldso/dlsym.c
@@ -1,6 +1,5 @@
 #include <dlfcn.h>
-
-void *__dlsym(void *restrict, const char *restrict, void *restrict);
+#include "dynlink.h"
 
 void *dlsym(void *restrict p, const char *restrict s)
 {
diff --git a/src/ldso/tlsdesc.c b/src/ldso/tlsdesc.c
index df7eb9c950e373feb9ebee3be19fe52b1024c317..caf8dc081cda7d671957af666ab4a49e4d104c05 100644
--- a/src/ldso/tlsdesc.c
+++ b/src/ldso/tlsdesc.c
@@ -1,8 +1,7 @@
 #include <stddef.h>
+#include <dynlink.h>
 #include "libc.h"
 
-hidden ptrdiff_t __tlsdesc_static(), __tlsdesc_dynamic();
-
 ptrdiff_t __tlsdesc_static()
 {
 	return 0;