From c169bcb5d268bf11f62d9f81b3eed66673062df7 Mon Sep 17 00:00:00 2001
From: Matteo Cypriani <matteo.cypriani@uqat.ca>
Date: Fri, 2 Aug 2013 10:19:45 -0400
Subject: [PATCH] [doc] CMake: don't quit if txt2tags is not found

Don't return if txt2tags is not found, so that Doxygen-generated man
pages can be built.
---
 doc/CMakeLists.txt | 90 +++++++++++++++++++++++-----------------------
 1 file changed, 46 insertions(+), 44 deletions(-)

diff --git a/doc/CMakeLists.txt b/doc/CMakeLists.txt
index 9a63e5b..d7c0552 100644
--- a/doc/CMakeLists.txt
+++ b/doc/CMakeLists.txt
@@ -9,57 +9,59 @@
 # distributed along with this file, either separately or by replacing
 # this notice by the COPYRIGHT.t2t file's contents.
 
+
+set(MAN_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/man")
+add_custom_target(doc ALL true)
+
+
+### txt2tags manual pages ###
+
 # Make sure txt2tags is available
 find_package(Txt2tags)
 if (NOT TXT2TAGS_FOUND)
   message(WARNING
-    "Dependency missing to generate OwlPS' documentation: txt2tags")
-  return()
+    "Couldn't find txt2tags: disabling generation of txt2tags-based man pages")
+else()
+
+  set(PREPROC_MAN ./preproc-man.sh)
+
+  function(add_manpage PAGENAME SECTION)
+    set(OUTPUT_DIRECTORY "${MAN_OUTPUT_DIRECTORY}/man${SECTION}")
+    set(SOURCE ${PAGENAME}.t2t)
+    set(TARGETNAME ${PAGENAME}.${SECTION})
+    set(TARGET "${OUTPUT_DIRECTORY}/${TARGETNAME}")
+
+    # Create the output directory
+    # Note: this is done only when first calling cmake and when rebuilding
+    # cache; it would be nice if it could be called every time, but there
+    # doesn't seem to be any simple solution.
+    file(MAKE_DIRECTORY "${OUTPUT_DIRECTORY}")
+
+    # Command to generate the man page
+    add_custom_command(
+      OUTPUT "${TARGET}"
+      COMMAND "${PREPROC_MAN}" "${SOURCE}" | "${TXT2TAGS_EXECUTABLE}" -q --infile=- --outfile="${TARGET}" -t man
+      DEPENDS "${SOURCE}"
+      WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
+      COMMENT "Generating ${TARGETNAME}")
+
+    # Set up the target
+    add_custom_target(${TARGETNAME} true DEPENDS "${TARGET}")
+
+    # Add the target to the "doc" meta-target
+    add_dependencies(doc "${TARGETNAME}")
+  endfunction()
+
+  add_manpage(owlps 7)
+  add_manpage(owlps-architecture 7)
+  add_manpage(owlps-deployment 7)
+  add_manpage(owlps-client 1)
+  add_manpage(owlps-listenerd 1)
+  add_manpage(owlps-aggregatord 1)
+
 endif()
 
 
-### Man pages ###
-
-set(MAN_OUTPUT_DIRECTORY "${CMAKE_BINARY_DIR}/man")
-set(PREPROC_MAN ./preproc-man.sh)
-
-add_custom_target(doc ALL true)
-
-function(add_manpage PAGENAME SECTION)
-  set(OUTPUT_DIRECTORY "${MAN_OUTPUT_DIRECTORY}/man${SECTION}")
-  set(SOURCE ${PAGENAME}.t2t)
-  set(TARGETNAME ${PAGENAME}.${SECTION})
-  set(TARGET "${OUTPUT_DIRECTORY}/${TARGETNAME}")
-
-  # Create the output directory
-  # Note: this is done only when first calling cmake and when rebuilding
-  # cache; it would be nice if it could be called every time, but there
-  # doesn't seem to be any simple solution.
-  file(MAKE_DIRECTORY "${OUTPUT_DIRECTORY}")
-
-  # Command to generate the man page
-  add_custom_command(
-    OUTPUT "${TARGET}"
-    COMMAND "${PREPROC_MAN}" "${SOURCE}" | "${TXT2TAGS_EXECUTABLE}" -q --infile=- --outfile="${TARGET}" -t man
-    DEPENDS "${SOURCE}"
-    WORKING_DIRECTORY "${CMAKE_CURRENT_SOURCE_DIR}"
-    COMMENT "Generating ${TARGETNAME}")
-
-  # Set up the target
-  add_custom_target(${TARGETNAME} true DEPENDS "${TARGET}")
-
-  # Add the target to the "doc" meta-target
-  add_dependencies(doc "${TARGETNAME}")
-endfunction()
-
-add_manpage(owlps 7)
-add_manpage(owlps-architecture 7)
-add_manpage(owlps-deployment 7)
-add_manpage(owlps-client 1)
-add_manpage(owlps-listenerd 1)
-add_manpage(owlps-aggregatord 1)
-
-
 ### Doxygen-generated man pages ###
 
 if (NOT DOXYGEN_FOUND)