- if test -z "$STDDEF_H" \
- && test $gl_cv_header_locale_h_posix2001 = yes \
- && test $gl_cv_header_locale_h_needs_xlocale_h = no; then
- LOCALE_H=
- else
- gl_CHECK_NEXT_HEADERS([locale.h])
- LOCALE_H=locale.h
- fi
- AC_SUBST([LOCALE_H])
+ dnl <locale.h> is always overridden, because of GNULIB_POSIXCHECK.
+ gl_NEXT_HEADERS([locale.h])
+
+ dnl Check for declarations of anything we want to poison if the
+ dnl corresponding gnulib module is not in use.
+ gl_WARN_ON_USE_PREPARE([[#include <locale.h>
+/* Some systems provide declarations in a non-standard header. */
+#if HAVE_XLOCALE_H
+# include <xlocale.h>
+#endif
+ ]],
+ [setlocale duplocale])
+])
+
+AC_DEFUN([gl_LOCALE_MODULE_INDICATOR],
+[
+ dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
+ AC_REQUIRE([gl_LOCALE_H_DEFAULTS])
+ gl_MODULE_INDICATOR_SET_VARIABLE([$1])
+ dnl Define it also as a C macro, for the benefit of the unit tests.
+ gl_MODULE_INDICATOR_FOR_TESTS([$1])
+])
+
+AC_DEFUN([gl_LOCALE_H_DEFAULTS],
+[
+ GNULIB_SETLOCALE=0; AC_SUBST([GNULIB_SETLOCALE])
+ GNULIB_DUPLOCALE=0; AC_SUBST([GNULIB_DUPLOCALE])
+ dnl Assume proper GNU behavior unless another module says otherwise.
+ HAVE_DUPLOCALE=1; AC_SUBST([HAVE_DUPLOCALE])
+ REPLACE_SETLOCALE=0; AC_SUBST([REPLACE_SETLOCALE])
+ REPLACE_DUPLOCALE=0; AC_SUBST([REPLACE_DUPLOCALE])