build-sys: s/HAVE_UTMP/ENABLE_UTMP/

"Have" should be about the external environment and dependencies. Anything
which is a pure yes/no choice should be "enable".

src/basic/build.h

@@ -61,7 +61,7 @@
 #define _SYSVINIT_FEATURE_ "-SYSVINIT"
 #endif
 
-#if HAVE_UTMP
+#if ENABLE_UTMP
 #define _UTMP_FEATURE_ "+UTMP"
 #else
 #define _UTMP_FEATURE_ "-UTMP"

src/shared/meson.build

@@ -108,7 +108,7 @@ if conf.get('HAVE_ACL') == 1
         shared_sources += ['acl-util.c']
 endif
 
-if conf.get('HAVE_UTMP') == 1
+if conf.get('ENABLE_UTMP') == 1
         shared_sources += ['utmp-wtmp.c']
 endif
 

src/shared/utmp-wtmp.h

@@ -25,7 +25,7 @@
 #include "time-util.h"
 #include "util.h"
 
-#if HAVE_UTMP
+#if ENABLE_UTMP
 int utmp_get_runlevel(int *runlevel, int *previous);
 
 int utmp_put_shutdown(void);
@@ -42,7 +42,7 @@ int utmp_wall(
         bool (*match_tty)(const char *tty, void *userdata),
         void *userdata);
 
-#else /* HAVE_UTMP */
+#else /* ENABLE_UTMP */
 
 static inline int utmp_get_runlevel(int *runlevel, int *previous) {
         return -ESRCH;
@@ -71,4 +71,4 @@ static inline int utmp_wall(
         return 0;
 }
 
-#endif /* HAVE_UTMP */
+#endif /* ENABLE_UTMP */