diff --git a/ccache.c b/ccache.c
index bef9d08..eef28a5 100644
--- a/ccache.c
+++ b/ccache.c
@@ -128,7 +128,9 @@ static const char *tmp_string(void)
 	if (!ret) {
 		char hostname[200];
 		strcpy(hostname, "unknown");
+#if HAVE_GETHOSTNAME
 		gethostname(hostname, sizeof(hostname)-1);
+#endif
 		hostname[sizeof(hostname)-1] = 0;
 		asprintf(&ret, "%s.%u", hostname, (unsigned)getpid());
 	}
diff --git a/config.h.in b/config.h.in
index 74d6f29..286f038 100644
--- a/config.h.in
+++ b/config.h.in
@@ -16,6 +16,9 @@
    */
 #undef HAVE_DIRENT_H
 
+/* Define to 1 if you have the `gethostname' function. */
+#undef HAVE_GETHOSTNAME
+
 /* Define to 1 if you have the <inttypes.h> header file. */
 #undef HAVE_INTTYPES_H
 
diff --git a/configure b/configure
index 5ef7df7..4eea3b8 100755
--- a/configure
+++ b/configure
@@ -3269,7 +3269,8 @@ done
 
 
 
-for ac_func in realpath snprintf vsnprintf vasprintf asprintf mkstemp
+
+for ac_func in realpath snprintf vsnprintf vasprintf asprintf mkstemp gethostname
 do
 as_ac_var=`echo "ac_cv_func_$ac_func" | $as_tr_sh`
 echo "$as_me:$LINENO: checking for $ac_func" >&5
diff --git a/configure.in b/configure.in
index 8ae73b3..5f59109 100644
--- a/configure.in
+++ b/configure.in
@@ -29,7 +29,7 @@ AC_HEADER_SYS_WAIT
 
 AC_CHECK_HEADERS(ctype.h strings.h stdlib.h string.h)
 
-AC_CHECK_FUNCS(realpath snprintf vsnprintf vasprintf asprintf mkstemp)
+AC_CHECK_FUNCS(realpath snprintf vsnprintf vasprintf asprintf mkstemp gethostname)
 
 AC_CACHE_CHECK([for compar_fn_t in stdlib.h],ccache_cv_COMPAR_FN_T, [
     AC_TRY_COMPILE(