forkpty, openpty: split functions into new modules

[gnulib.git] / m4 / pty.m4

diff --git a/m4/pty.m4 b/m4/pty.m4
new file mode 100644 (file)
index 0000000..f2a5664
--- /dev/null
+++ b/m4/pty.m4
@@ -0,0 +1,31 @@
+# pty.m4 serial 1
+dnl Copyright (C) 2010 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.
+
+# gl_PTY_LIB
+# ----------
+# Define automake variable PTY_LIB to the library needed (if any).
+AC_DEFUN([gl_PTY_LIB],
+[
+  # Check for the library required for forkpty.
+  PTY_LIB=
+  save_LIBS="$LIBS"
+  AC_SEARCH_LIBS([forkpty], [util],
+    [if test "$ac_cv_search_forkpty" != "none required"; then
+       PTY_LIB="$ac_cv_search_forkpty"
+     fi])
+  LIBS="$save_LIBS"
+  AC_SUBST([PTY_LIB])
+])
+
+AC_DEFUN([gl_FORKPTY],
+[
+  AC_REQUIRE([gl_PTY_LIB])
+])
+
+AC_DEFUN([gl_OPENPTY],
+[
+  AC_REQUIRE([gl_PTY_LIB])
+])