if build type not set, set to debug

modules/safe_guards.cmake

@@ -15,9 +15,5 @@ function(guard_against_bad_build_types in_build_type)
     endif()
 endfunction()
 
-if(NOT CMAKE_BUILD_TYPE)
-    set(CMAKE_BUILD_TYPE "Debug")
-endif()
-
 guard_against_in_source(${PROJECT_SOURCE_DIR} ${PROJECT_BINARY_DIR})
 guard_against_bad_build_types(${CMAKE_BUILD_TYPE})

update.py

@@ -166,6 +166,11 @@ def gen_cmakelists(config, relative_path, list_of_modules):
     s.append('# do not rebuild if rules (compiler flags) change')
     s.append('set(CMAKE_SKIP_RULE_DEPENDENCY TRUE)')
 
+    s.append('\n')
+    s.append('if(NOT CMAKE_BUILD_TYPE)')
+    s.append('    set(CMAKE_BUILD_TYPE "Debug")')
+    s.append('endif()')
+
     s.append('\n')
     s.append('# python interpreter is required at many')
     s.append('# places during configuration and build')