From f3994915e359cd3c38158fd01359ddcd4eb61e7b Mon Sep 17 00:00:00 2001
From: Danny Robson <danny@nerdcruft.net>
Date: Thu, 18 Aug 2022 13:13:02 +1000
Subject: [PATCH] optimisation: add RUNTIME_DEBUGGING option

---
 nc_optimisation.cmake | 26 +++++++++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/nc_optimisation.cmake b/nc_optimisation.cmake
index 4b2e07b..b2b097c 100644
--- a/nc_optimisation.cmake
+++ b/nc_optimisation.cmake
@@ -157,9 +157,33 @@ endif ()
 
 
 ###############################################################################
+if (CMAKE_BUILD_TYPE MATCHES Debug)
+    set (_DEFAULT_RUNTIME_DEBUGGING ON)
+else()
+    set (_DEFAULT_RUNTIME_DEBUGGING OFF)
+endif()
+
+#message(FATAL_ERROR "RUNTIME DEBUGGING ${_DEFAULT_RUNTIME_DEBUGGING}")
+option(
+    RUNTIME_DEBUGGING
+    "enable debugging features that impact runtime and ABI"
+    ${_DEFAULT_RUNTIME_DEBUGGING}
+)
+
+if (RUNTIME_DEBUGGING)
+    if (CMAKE_BUILD_TYPE MATCHES Debug)
+    else()
+        message(FATAL_ERROR "RUNTIME_DEBUGGING is only supported under a DEBUG build")
+    endif()
+endif ()
+
+
 if (CMAKE_BUILD_TYPE MATCHES Debug)
     add_definitions(-DENABLE_DEBUGGING)
-    add_definitions(-D_GLIBCXX_DEBUG)
+
+    if (RUNTIME_DEBUGGING)
+        add_definitions(-D_GLIBCXX_DEBUG)
+    endif()
 
     # Don't make any commits that use -O0 by default. Instead, either add an
     # argument that allows one to choose, or temporarily switch the lines