From bc28606f01f57d84f86a06108f5a74cd95d55449 Mon Sep 17 00:00:00 2001
From: Nils Andresen <nils@nils-andresen.de>
Date: Tue, 30 Aug 2011 20:24:28 +0200
Subject: [PATCH] client/X11: Do not break compilation, if xmlto is not
 available

---
 client/X11/CMakeLists.txt | 19 ++++++++++++-------
 cmake/FindXmlto.cmake     | 35 +++++++++++++++++++++++++++++++++++
 2 files changed, 47 insertions(+), 7 deletions(-)
 create mode 100644 cmake/FindXmlto.cmake

diff --git a/client/X11/CMakeLists.txt b/client/X11/CMakeLists.txt
index 1854f3327..73f61c2cb 100644
--- a/client/X11/CMakeLists.txt
+++ b/client/X11/CMakeLists.txt
@@ -17,6 +17,7 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+include(FindXmlto)
 include_directories(${X11_INCLUDE_DIRS})
 
 add_executable(xfreerdp
@@ -34,15 +35,19 @@ add_executable(xfreerdp
 	xfreerdp.h)
 
 if(WITH_MANPAGES)
-	add_custom_command(OUTPUT xfreerdp.1
-		COMMAND xmlto man ${CMAKE_CURRENT_SOURCE_DIR}/xfreerdp.1.xml
-		DEPENDS xfreerdp.1.xml)
+	if(XMLTO_FOUND)
+		add_custom_command(OUTPUT xfreerdp.1
+			COMMAND ${XMLTO_EXECUTABLE} man ${CMAKE_CURRENT_SOURCE_DIR}/xfreerdp.1.xml
+			DEPENDS xfreerdp.1.xml)
 
-	add_custom_target(xfreerdp.manpage ALL
-		DEPENDS xfreerdp.1)
+		add_custom_target(xfreerdp.manpage ALL
+			DEPENDS xfreerdp.1)
 
-	install(FILES xfreerdp.1 DESTINATION share/man/man1)
-endif()
+		install(FILES xfreerdp.1 DESTINATION share/man/man1)
+	else(XMLTO_FOUND)
+		message(WARNING "WITH_MANPAGES was set, but xmlto was not found. man-pages will not be installed")
+	endif(XMLTO_FOUND)
+endif(WITH_MANPAGES)
 
 find_package(Xinerama)
 if(XINERAMA_FOUND)
diff --git a/cmake/FindXmlto.cmake b/cmake/FindXmlto.cmake
new file mode 100644
index 000000000..7d2107bab
--- /dev/null
+++ b/cmake/FindXmlto.cmake
@@ -0,0 +1,35 @@
+# - Find xmlto
+# Find the xmlto docbook xslt frontend
+#
+#  This module defines the following variables:
+#     XMLTO_FOUND        - True if xmlto was found
+#     XMLTO_EXECUTABLE   - Path to xmlto, if xmlto was found
+#
+
+#=============================================================================
+# Copyright 2011 Nils Andresen <nils@nils-andresen.de>
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+#=============================================================================
+set(XMLTO_FOUND false)
+
+find_program(XMLTO_EXECUTABLE
+	NAMES xmlto
+	DOC   "docbook xslt frontend")
+
+if(XMLTO_EXECUTABLE)
+	set(XMLTO_FOUND true)
+	message(STATUS "Found XMLTO: ${XMLTO_EXECUTABLE}")
+endif()
+
+mark_as_advanced(XMLTO_EXECUTABLE)