- Fix to have empty definition when not supported for weak attribute.

configure

@@ -6976,6 +6976,10 @@ printf "%s\n" "#define HAVE_ATTR_WEAK 1" >>confdefs.h
 
 printf "%s\n" "#define ATTR_WEAK __attribute__((weak))" >>confdefs.h
 
+else
+
+printf "%s\n" "#define ATTR_WEAK /**/" >>confdefs.h
+
 fi
 
 

configure.ac

@@ -339,6 +339,8 @@ AC_MSG_RESULT($ac_cv_c_weak_attribute)
 if test $ac_cv_c_weak_attribute = yes; then
   AC_DEFINE(HAVE_ATTR_WEAK, 1, [Whether the C compiler accepts the "weak" attribute])
   AC_DEFINE(ATTR_WEAK, [__attribute__((weak))], [apply the weak attribute to a symbol])
+else
+  AC_DEFINE(ATTR_WEAK,[], [apply the weak attribute to a symbol])
 fi
 ])dnl End of CHECK_WEAK_ATTRIBUTE
 

doc/Changelog

@@ -7,6 +7,7 @@
 	  fallthrough attribute annotations.
 	- Fix compile when the compiler does not support the noreturn
 	  attribute.
+	- Fix to have empty definition when not supported for weak attribute.
 
 19 July 2024: Wouter
 	- Add dnstap-sample-rate that logs only 1/N messages, for high volume