SL-821: export BUGSPLAT_DB when loaded so child processes can detect.

Produce CMake message when BugSplat is engaged so we can detect in build log.

Don't try to copy BugSplat DLLs when NOT engaged.

build.sh

@@ -110,6 +110,11 @@ pre_build()
     then # show that we're doing this, just not the contents
          echo source "$bugsplat_sh"
          source "$bugsplat_sh"
+         # important: we test this and use its value in [grand-]child processes
+         if [ -n "${BUGSPLAT_DB:-}" ]
+         then echo export BUGSPLAT_DB
+              export BUGSPLAT_DB
+         fi
     fi
     set -x
 

indra/cmake/Copy3rdPartyLibs.cmake

@@ -51,15 +51,17 @@ if(WINDOWS)
 
     # Filenames are different for 32/64 bit BugSplat file and we don't
     # have any control over them so need to branch.
-    if(ADDRESS_SIZE EQUAL 32)
+    if (DEFINED ENV{BUGSPLAT_DB})
+      if(ADDRESS_SIZE EQUAL 32)
         set(release_files ${release_files} BugSplat.dll)
         set(release_files ${release_files} BugSplatRc.dll)
         set(release_files ${release_files} BsSndRpt.exe)
-    else(ADDRESS_SIZE EQUAL 32)
+      else(ADDRESS_SIZE EQUAL 32)
         set(release_files ${release_files} BugSplat64.dll)
         set(release_files ${release_files} BugSplatRc64.dll)
         set(release_files ${release_files} BsSndRpt64.exe)
-    endif(ADDRESS_SIZE EQUAL 32)
+      endif(ADDRESS_SIZE EQUAL 32)
+    endif (DEFINED ENV{BUGSPLAT_DB})
 
     if (FMODEX)
 

indra/cmake/bugsplat.cmake

@@ -3,10 +3,12 @@
 # build).
 if (DEFINED ENV{BUGSPLAT_DB})
   if (USESYSTEMLIBS)
+    message(STATUS "Looking for system BugSplat")
     set(BUGSPLAT_FIND_QUIETLY ON)
     set(BUGSPLAT_FIND_REQUIRED ON)
     include(FindBUGSPLAT)
   else (USESYSTEMLIBS)
+    message(STATUS "Engaging autobuild BugSplat")
     include(Prebuilt)
     use_prebuilt_binary(bugsplat)
     if (WINDOWS)