From 236ea073a9120554825544c8dc1a08914ad6698d Mon Sep 17 00:00:00 2001
From: sumedhghaisas <sumedhghaisas@gmail.com>
Date: Mon, 27 Jun 2016 02:31:48 -0700
Subject: [PATCH] Making 'lcov' optional.

* lcov will only be needed for local coverage report generation
---
 CMakeLists.txt | 13 +++++++------
 1 file changed, 7 insertions(+), 6 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 84ca9ecb878..4c0a3322cb0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -86,16 +86,17 @@ if(BUILD_WITH_COVERAGE)
       message(FATAL_ERROR "gcov not found! Aborting...")
     endif()
 
-    if(NOT LCOV)
-      message(FATAL_ERROR "lcov not found! Aborting...")
-    endif()
-
-    configure_file(CMake/mlpack_coverage.in mlpack_coverage)
     set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} --coverage -fno-inline -fno-inline-small-functions -fno-default-inline -fprofile-arcs -fkeep-inline-functions")
     message(WARNING "Adding debug options for coverage")
     # Remove optimizations for better line coverage
     set(DEBUG ON)
-    add_custom_target(mlpack_coverage DEPENDS mlpack_test COMMAND ${PROJECT_BINARY_DIR}/mlpack_coverage)
+
+    if(LCOV)
+      configure_file(CMake/mlpack_coverage.in mlpack_coverage)
+      add_custom_target(mlpack_coverage DEPENDS mlpack_test COMMAND ${PROJECT_BINARY_DIR}/mlpack_coverage)
+    else()
+      message(WARNING "'lcov' not found, local coverage report is disabled. Install 'lcov' and rerun cmake to generate local coverage report.")
+    endif()
   else()
     message(FATAL_ERROR "Coverage will only work with GNU environment.")
   endif()