(AC_REPLACE_FUNCS): Add dup2.

diff --git a/m4/jm-macros.m4 b/m4/jm-macros.m4
index 77e0df0..702e065 100644 (file)
--- a/m4/jm-macros.m4
+++ b/m4/jm-macros.m4
@@ -39,6 +39,7 @@ AC_DEFUN(jm_MACROS,
   AC_REQUIRE([jm_AFS])
   AC_REQUIRE([jm_AC_PREREQ_XSTRTOUMAX])
   AC_REPLACE_FUNCS(strcasecmp strncasecmp)
+  AC_REPLACE_FUNCS(dup2)
 
   # By default, argmatch should fail calling usage (1).
   AC_DEFINE(ARGMATCH_DIE, [usage (1)],