w: Fix musl UT_HOSTSIZE issue

While musl has utmpx.h, their header file does not define all the
values, especially __UT_HOSTSIZE and friends. Instead it just
hard codes the sizes :/

This change will look for that definition specifically and if
not found will include utmp.h too. Checked on Alpine 3.17

musl just makes these a stub so w doesn't work anyway.

Signed-off-by: Craig Small <csmall@dropbear.xyz>

1 files changed, 4 insertions, 1 deletions

diff --git a/src/w.c b/src/w.c
index 80a867b..093cfbc 100644
--- a/src/w.c
+++ b/src/w.c
@@ -45,7 +45,10 @@
 #include <time.h>
 #include <unistd.h>
 #ifdef HAVE_UTMPX_H
-#	include <utmpx.h>
+#include <utmpx.h>
+#ifndef HAVE_UT_HOSTSIZE_IN_UTMPX
+#include <utmp.h>
+#endif
 #else
 #	include <utmp.h>
 #endif