From b6da18fca8dd81651a8e456df598581c835fda1e Mon Sep 17 00:00:00 2001
From: Eric Wasylishen <ewasylishen@gmail.com>
Date: Sat, 9 Apr 2016 15:39:29 -0600
Subject: [PATCH] build: add cmake rules for building manuals

---
 CMakeLists.txt     |  1 +
 man/CMakeLists.txt | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+)
 create mode 100644 man/CMakeLists.txt

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 84aabed9..c3c56e10 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -63,6 +63,7 @@ add_subdirectory(bsputil)
 add_subdirectory(light)
 add_subdirectory(qbsp)
 add_subdirectory(vis)
+add_subdirectory(man)
 
 #CPack configuration
 
diff --git a/man/CMakeLists.txt b/man/CMakeLists.txt
new file mode 100644
index 00000000..c988b68e
--- /dev/null
+++ b/man/CMakeLists.txt
@@ -0,0 +1,20 @@
+cmake_minimum_required (VERSION 2.6)
+project (man)
+
+find_program (GROFF NAMES groff)
+
+if (GROFF-NOTFOUND)
+    message(FATAL_ERROR "Could not find groff")
+endif(GROFF-NOTFOUND)
+
+if(GROFF)
+    set(MANPAGES qbsp vis light bsputil bspinfo)
+    foreach(MANPAGE ${MANPAGES})
+        add_custom_command(
+            OUTPUT ${MANPAGE}.txt
+            COMMAND ${GROFF} -Tascii -man ${CMAKE_SOURCE_DIR}/man/${MANPAGE}.1 | col -bx > ${MANPAGE}.txt
+        )
+        add_custom_target(man_${MANPAGE} ALL DEPENDS ${MANPAGE}.txt)
+        install(FILES ${MANPAGE}.txt DESTINATION doc)
+    endforeach()
+endif(GROFF)