From 3478becf9e3093792fcb4431a05061c071b2a3b6 Mon Sep 17 00:00:00 2001
From: Mark Brand <mabrand@mabrand.nl>
Date: Sat, 16 Nov 2013 12:00:16 +0100
Subject: [PATCH] add BUILD_DOCUMENTATION option

---
 CMakeLists.txt | 29 ++++++++++++++++++-----------
 1 file changed, 18 insertions(+), 11 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 0e925136..9b4693b1 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -941,20 +941,27 @@ ENDIF()
 ##############################################################################
 # Documentation
 
-FIND_PACKAGE(Doxygen)
+OPTION(
+	VMIME_BUILD_DOCUMENTATION
+	"Build documentation"
+	ON
+)
 
-IF(DOXYGEN_FOUND)
-	CONFIGURE_FILE(${CMAKE_SOURCE_DIR}/Doxyfile.in ${CMAKE_BINARY_DIR}/Doxyfile @ONLY)
+IF(VMIME_BUILD_DOCUMENTATION)
+	FIND_PACKAGE(Doxygen)
 
-	# Make a target so that documentation can be generated by running "make doc"
-	ADD_CUSTOM_TARGET(
-		doc
-		${DOXYGEN_EXECUTABLE} ${CMAKE_BINARY_DIR}/Doxyfile
-		WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
-		COMMENT "Generating API documentation with Doxygen" VERBATIM
-	)
-ENDIF(DOXYGEN_FOUND)
+	IF(DOXYGEN_FOUND)
+		CONFIGURE_FILE(${CMAKE_SOURCE_DIR}/Doxyfile.in ${CMAKE_BINARY_DIR}/Doxyfile @ONLY)
 
+		# Make a target so that documentation can be generated by running "make doc"
+		ADD_CUSTOM_TARGET(
+			doc
+			${DOXYGEN_EXECUTABLE} ${CMAKE_BINARY_DIR}/Doxyfile
+			WORKING_DIRECTORY ${CMAKE_BINARY_DIR}
+			COMMENT "Generating API documentation with Doxygen" VERBATIM
+		)
+	ENDIF(DOXYGEN_FOUND)
+ENDIF(VMIME_BUILD_DOCUMENTATION)
 
 ##############################################################################
 # Sanity checks