[PATCH 04/15] libunistring-optional: infrastructure

[Paolo Bonzini]

* m4/libunistring-optional.m4: New.
* modules/libunistring-optional: New.
---
 m4/libunistring-optional.m4   |   22 ++++++++++++++++++++++
 modules/libunistring-optional |   26 ++++++++++++++++++++++++++
 2 files changed, 48 insertions(+), 0 deletions(-)
 create mode 100644 m4/libunistring-optional.m4
 create mode 100644 modules/libunistring-optional

diff --git a/m4/libunistring-optional.m4 b/m4/libunistring-optional.m4
new file mode 100644
index 0000000..f3bf43f
--- /dev/null
+++ b/m4/libunistring-optional.m4
@@ -0,0 +1,22 @@
+# libunistring.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.
+
+dnl From Paolo Bonzini.
+
+AC_DEFUN([gl_CONFIG_LINKS],
+[
+  AC_CONFIG_LINKS(gl_GNULIB_SOURCE_BASE[/$1.h]:gl_GNULIB_SOURCE_BASE[/$1.in.h])
+])
+
+AC_DEFUN([gl_LIBUNISTRING_LIBOBJ],
+[if test "x$ac_cv_libunistring" != xyes; then
+  AC_LIBOBJ([$1])
+fi])
+
+AC_DEFUN([gl_LIBUNISTRING_HEADER],
+[if test "x$ac_cv_libunistring" != xyes; then
+  gl_CONFIG_LINKS([$1])
+fi])
diff --git a/modules/libunistring-optional b/modules/libunistring-optional
new file mode 100644
index 0000000..a4be987
--- /dev/null
+++ b/modules/libunistring-optional
@@ -0,0 +1,26 @@
+Description:
+Try to use system libunistring for Unicode string functions.
+
+Files:
+m4/libunistring.m4
+
+Depends-on:
+havelib
+iconv
+
+configure.ac:
+gl_LIBUNISTRING([no])
+
+Makefile.am:
+
+Include:
+
+Link:
+$(LTLIBUNISTRING) when linking with libtool, $(LIBUNISTRING) otherwise
+
+License:
+LGPL
+
+Maintainer:
+Paolo Bonzini, Bruno Haible
+
-- 
1.6.6.1