Index: sysprof-45.1/src/libsysprof/sysprof-elf-loader.c
===================================================================
--- sysprof-45.1.orig/src/libsysprof/sysprof-elf-loader.c
+++ sysprof-45.1/src/libsysprof/sysprof-elf-loader.c
@@ -21,6 +21,7 @@
 #include "config.h"
 
 #include <fcntl.h>
+#include <unistd.h>
 #include <sys/stat.h>
 
 #include "sysprof-elf-private.h"