sys_uio: new module

[gnulib.git] / m4 / sys_uio_h.m4

diff --git a/m4/sys_uio_h.m4 b/m4/sys_uio_h.m4
new file mode 100644 (file)
index 0000000..bafa0ac
--- /dev/null
+++ b/m4/sys_uio_h.m4
@@ -0,0 +1,31 @@
+# sys_uio_h.m4 serial 1
+dnl Copyright (C) 2011 Free Software Foundation, Inc.
+dnl This file is free software; the Free Software Foundation
+dnl gives unlimited permission to copy and/or distribute it,
+dnl with or without modifications, as long as this notice is preserved.
+
+AC_DEFUN([gl_HEADER_SYS_UIO],
+[
+  AC_REQUIRE([gl_SYS_UIO_H_DEFAULTS])
+  dnl <sys/uio.h> is always overridden, because of GNULIB_POSIXCHECK.
+  gl_CHECK_NEXT_HEADERS([sys/uio.h])
+  if test $ac_cv_header_sys_uio_h = yes; then
+    HAVE_SYS_UIO_H=1
+  else
+    HAVE_SYS_UIO_H=0
+  fi
+  AC_SUBST([HAVE_SYS_UIO_H])
+])
+
+AC_DEFUN([gl_SYS_UIO_MODULE_INDICATOR],
+[
+  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
+  AC_REQUIRE([gl_SYS_UIO_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_SYS_UIO_H_DEFAULTS],
+[
+])