diff --git a/libgcc/ChangeLog.omp b/libgcc/ChangeLog.omp
index c46f49bf5b75..cf509a70d61f 100644
--- a/libgcc/ChangeLog.omp
+++ b/libgcc/ChangeLog.omp
@@ -1,3 +1,8 @@
+2023-01-24  Thomas Schwinge  <thomas@codesourcery.com>
+
+	* config/nvptx/crt0.c [!HAVE_STDLIB_H]: Don't '#include <stdlib.h>'.
+	(atexit): Prototype.
+
 2023-01-20  Thomas Schwinge  <thomas@codesourcery.com>
 	    Andrew Stubbs  <ams@codesourcery.com>
 
diff --git a/libgcc/config/nvptx/crt0.c b/libgcc/config/nvptx/crt0.c
index 860e2bfacadd..02648bef84bc 100644
--- a/libgcc/config/nvptx/crt0.c
+++ b/libgcc/config/nvptx/crt0.c
@@ -19,11 +19,16 @@
    see the files COPYING3 and COPYING.RUNTIME respectively.  If not, see
    <http://www.gnu.org/licenses/>.  */
 
-#include <stdlib.h>
+#include "auto-target.h"
+
+#ifdef HAVE_STDLIB_H
+# include <stdlib.h>
+#endif
 #include "gbl-ctors.h"
 
 int *__exitval_ptr;
 
+extern int atexit (void (*function) (void));
 extern void __attribute__((noreturn)) exit (int status);
 extern int main (int, void **);