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-rw-r--r--configure.ac2
1 files changed, 1 insertions, 1 deletions
diff --git a/configure.ac b/configure.ac
index b3ebfe339..ef555571c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1126,7 +1126,7 @@ AC_CHECK_FUNCS(strftime strptime mktime timelocal \
 	       setlocale \
 	       uname \
 	       signgam \
-	       putenv getenv \
+	       putenv getenv setenv unsetenv xw\
 	       brk sbrk \
 	       pathconf sysconf \
 	       tgetent tigetflag tigetnum tigetstr setupterm \