gentoo-overlay/sys-apps/utempter/files/utempter-0.5.5.6-no_utmpx.patch

--- a/utempter.c
+++ b/utempter.c
@@ -11,7 +11,9 @@
 #include <sys/stat.h>
 #include <sys/sysmacros.h>
 #include <utmp.h>
+#ifndef __UCLIBC__
 #include <utmpx.h>
+#endif
 #include <unistd.h>
 
 static void usage(void) {
@@ -82,7 +84,11 @@
 }
 
 int main(int argc, const char ** argv) {
+#ifndef __UCLIBC__
     struct utmpx utx;
+#else
+    struct utmp utx;
+#endif
     int add;
     const char * device, * host;
     struct passwd * pw;
@@ -154,8 +160,13 @@
 
     gettimeofday(&utx.ut_tv, NULL);
 
+#ifndef __UCLIBC__
     pututxline(&utx);
     updwtmpx(_PATH_WTMP, &utx);
+#else
+    pututline(&utx);
+    updwtmp(_PATH_WTMP, &utx);
+#endif
 
     return 0;
 }