Index: CMakeLists.txt
===================================================================
--- CMakeLists.txt	(revisión: 10140)
+++ CMakeLists.txt	(copia de trabajo)
@@ -278,6 +278,10 @@
 	target_compile_definitions(simutrans PRIVATE USE_IP4_ONLY=1)
 endif ()
 
+if (SIMUTRANS_STEAM_BUILT)
+	target_compile_definitions(simutrans PRIVATE STEAM_BUILT=1)
+endif ()
+
 if (APPLE)
 	target_compile_definitions(simutrans PRIVATE ALT_SDL_DIR=1)
 endif (APPLE)
Index: cmake/SimutransCompileOptions.cmake
===================================================================
--- cmake/SimutransCompileOptions.cmake	(revisión: 10140)
+++ cmake/SimutransCompileOptions.cmake	(copia de trabajo)
@@ -43,6 +43,7 @@
 option(SIMUTRANS_ENABLE_PROFILING "Enable profiling code" OFF)
 option(SIMUTRANS_USE_SYSLOG "Enable logging to syslog" OFF)
 option(SIMUTRANS_USE_IP4_ONLY "Use only IPv4" OFF)
+option(SIMUTRANS_STEAM_BUILT "Compile a Steam build" OFF)
 option(DEBUG_FLUSH_BUFFER "Highlite areas changes since last redraw" OFF)
 option(ENABLE_WATERWAY_SIGNS "Allow private signs on watersways" OFF)
 option(AUTOJOIN_PUBLIC "Join when making things public" OFF)