New module 'sys_utsname'.

[gnulib.git] / m4 / sys_utsname_h.m4

diff --git a/m4/sys_utsname_h.m4 b/m4/sys_utsname_h.m4
new file mode 100644 (file)
index 0000000..2e688fb
--- /dev/null
+++ b/m4/sys_utsname_h.m4
@@ -0,0 +1,34 @@
+# sys_utsname_h.m4 serial 1
+dnl Copyright (C) 2009 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.
+
+dnl Written by Bruno Haible.
+
+AC_DEFUN([gl_SYS_UTSNAME_H],
+[
+  dnl Use AC_REQUIRE here, so that the default behavior below is expanded
+  dnl once only, before all statements that occur in other macros.
+  AC_REQUIRE([gl_SYS_UTSNAME_H_DEFAULTS])
+
+  AC_CHECK_HEADERS_ONCE([sys/utsname.h])
+  if test $ac_cv_header_sys_utsname_h != yes; then
+    SYS_UTSNAME_H='sys/utsname.h'
+  fi
+])
+
+AC_DEFUN([gl_SYS_UTSNAME_MODULE_INDICATOR],
+[
+  dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
+  AC_REQUIRE([gl_SYS_UTSNAME_H_DEFAULTS])
+  GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
+])
+
+AC_DEFUN([gl_SYS_UTSNAME_H_DEFAULTS],
+[
+  GNULIB_UNAME=0;   AC_SUBST([GNULIB_UNAME])
+  dnl Assume proper GNU behavior unless another module says otherwise.
+  HAVE_UNAME=1;     AC_SUBST([HAVE_UNAME])
+  SYS_UTSNAME_H=''; AC_SUBST([SYS_UTSNAME_H])
+])