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fchdir: avoid extra chdir and fix test
[gnulib.git]
/
m4
/
dup2.m4
diff --git
a/m4/dup2.m4
b/m4/dup2.m4
index
b8794c2
..
62e31a8
100644
(file)
--- a/
m4/dup2.m4
+++ b/
m4/dup2.m4
@@
-69,6
+69,7
@@
AC_DEFUN([gl_FUNC_DUP2],
AC_DEFUN([gl_REPLACE_DUP2],
[
AC_REQUIRE([gl_UNISTD_H_DEFAULTS])
+ AC_CHECK_FUNCS_ONCE([dup2])
if test $ac_cv_func_dup2 = yes; then
REPLACE_DUP2=1
fi