--- innoextract-1.4/CMakeLists.txt
+++ innoextract-1.4/CMakeLists.txt
@@ -6,6 +6,7 @@
 # Define configuration options
 
 option(USE_LZMA "Build lzma decompression support." ON)
+option(WITH_DEBUG "Debug build" OFF)
 option(DEBUG_EXTRA "Expensive debug options" OFF)
 option(SET_WARNING_FLAGS "Adjust compiler warning flags" ON)
 option(SET_OPTIMIZATION_FLAGS "Adjust compiler optimization flags" ON)
--- innoextract-1.4/cmake/BuildType.cmake
+++ innoextract-1.4/cmake/BuildType.cmake
@@ -8,7 +8,7 @@
 if(CMAKE_BUILD_TYPE STREQUAL "")
 	set(CMAKE_BUILD_TYPE "Release")
 endif()
-if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+if(CMAKE_BUILD_TYPE STREQUAL "Debug" OR WITH_DEBUG)
 	add_definitions(-DDEBUG)
 	set(DEBUG 1)
 endif()
@@ -64,7 +64,7 @@
 		# Specifically, the need for libboost_system depends on the Boost version
 		add_ldflag("-Wl,--as-needed")
 		
-		if(CMAKE_BUILD_TYPE STREQUAL "Debug")
+		if(CMAKE_BUILD_TYPE STREQUAL "Debug" OR WITH_DEBUG)
 			
 			# set debug symbol level to -g3
 			check_compiler_flag(RESULT "-g3")