specify coverage flags as build type

 - Add -O0 for accurate coverage and now it isn't overridden by -O2

Author: zbeekman

CMakeLists.txt

@@ -15,11 +15,12 @@ cmake_minimum_required ( VERSION 2.8.8 FATAL_ERROR )
 set ( CMAKE_CONFIGURATION_TYPES "Debug" "Release" "MinSizeRel" "RelWithDebInfo" )
 set ( CMAKE_BUILD_TYPE "Release"
   CACHE STRING "Select which configuration to build." )
-set_property ( CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS ${CMAKE_CONFIGURATION_TYPES} )
 
 enable_language ( Fortran )
 include ( "cmake/pickFortranCompilerFlags.cmake" )
 
+set_property ( CACHE CMAKE_BUILD_TYPE PROPERTY STRINGS ${CMAKE_CONFIGURATION_TYPES} )
+
 # Check for in-source builds and error out if found
 # Provides an advanced option to allow in source builds
 include ( "cmake/checkOutOfSource.cmake" )

cmake/pickFortranCompilerFlags.cmake

@@ -23,11 +23,10 @@ if ( NOT Fortran_FLAGS_INIT )
       set ( CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -check all" )
     endif ()
   elseif ( "${CMAKE_Fortran_COMPILER_ID}" MATCHES "GNU" )
-    set ( ENABLE_CODE_COVERAGE FALSE CACHE BOOL
-      "Compile with code coverage output enabled using gcov. May not work on Mac.")
-    if ( ENABLE_CODE_COVERAGE )
-      set ( CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -fprofile-arcs -ftest-coverage" )
-    endif ()
+    # add a coverage build configuration
+    set ( CMAKE_CONFIGURATION_TYPES ${CMAKE_CONFIGURATION_TYPES} "Coverage" )
+    set ( CMAKE_Fortran_FLAGS_COVERAGE "-fprofile-arcs -ftest-coverage -O0" CACHE STRING
+      "Fortran compiler flags for coverage configuration" )
     if ( ENABLE_BACK_TRACE )
       set ( CMAKE_Fortran_FLAGS "${CMAKE_Fortran_FLAGS} -fbacktrace" )
     endif ()