From e2285793a5a9f5195eb77318452fc2aca95878ec Mon Sep 17 00:00:00 2001
From: Tom Rondeau <trondeau@vt.edu>
Date: Fri, 8 Jun 2012 12:25:49 -0400
Subject: howto: adding gr_log checks to build.
---
.../cmake/Modules/GrMiscUtils.cmake | 32 ++++++++++++++++++++++
1 file changed, 32 insertions(+)
(limited to 'gr-howto-write-a-block/cmake/Modules/GrMiscUtils.cmake')
diff --git a/gr-howto-write-a-block/cmake/Modules/GrMiscUtils.cmake b/gr-howto-write-a-block/cmake/Modules/GrMiscUtils.cmake
index 9331d5debc..cffe2f6540 100644
--- a/gr-howto-write-a-block/cmake/Modules/GrMiscUtils.cmake
+++ b/gr-howto-write-a-block/cmake/Modules/GrMiscUtils.cmake
@@ -208,3 +208,35 @@ function(GR_GEN_TARGET_DEPS name var)
set(${var} "DEPENDS;${name};COMMAND;${name}" PARENT_SCOPE)
endif()
endfunction(GR_GEN_TARGET_DEPS)
+
+
+########################################################################
+# Control use of gr_log
+# Usage:
+# GR_LOGGING()
+#
+# Will set ENABLE_GR_LOG to 1 by default.
+# Can manually set with -DENABLE_GR_LOG=0|1
+########################################################################
+function(GR_LOGGING)
+ find_package(Log4cxx)
+
+ OPTION(ENABLE_GR_LOG "Use gr_log" ON)
+
+ if(NOT LOG4CXX_FOUND)
+ SET(ENABLE_GR_LOG OFF)
+ endif(NOT LOG4CXX_FOUND)
+
+ message(STATUS "ENABLE_GR_LOG set to ${ENABLE_GR_LOG}.")
+
+ if(ENABLE_GR_LOG)
+ add_definitions( -DENABLE_GR_LOG )
+ else(ENABLE_GR_LOG)
+ # If not enabled or available, set these variable to
+ # blank so we can use them later without having to
+ # check ENABLE_GR_LOG each time.
+ SET(LOG4CXX_INCLUDE_DIRS "" CACHE INTERNAL "" FORCE)
+ SET(LOG4CXX_LIBRARY_DIRS "" CACHE INTERNAL "" FORCE)
+ SET(LOG4CXX_LIBRARIES "" CACHE INTERNAL "" FORCE)
+ endif(ENABLE_GR_LOG)
+endfunction(GR_LOGGING)
--
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