Use getprogname() when program_invocation_short_name is not defined

diff --git a/meson.build b/meson.build
index e3d81da..931681a 100644 (file)
--- a/meson.build
+++ b/meson.build
@@ -87,6 +87,12 @@ if cc.has_header_symbol('dirent.h', 'versionsort', prefix : prefix)
        config_h.set('HAVE_VERSIONSORT', '1')
 endif
 
+if not cc.has_header_symbol('errno.h', 'program_invocation_short_name', prefix : prefix)
+       if cc.has_header_symbol('stdlib.h', 'getprogname')
+               config_h.set('program_invocation_short_name', 'getprogname()')
+       endif
+endif
+
 if cc.has_header('xlocale.h')
        config_h.set('HAVE_XLOCALE_H', '1')
 endif