1 files changed, 5 insertions, 1 deletions
diff --git a/compiler/options.nim b/compiler/options.nim
index 8ff8cb753..56b061358 100644
--- a/compiler/options.nim
+++ b/compiler/options.nim
@@ -494,7 +494,7 @@ proc isDefined*(conf: ConfigRef; symbol: string): bool =
                             osQnx, osAtari, osAix,
                             osHaiku, osVxWorks, osSolaris, osNetbsd,
                             osFreebsd, osOpenbsd, osDragonfly, osMacosx, osIos,
-                            osAndroid, osNintendoSwitch}
+                            osAndroid, osNintendoSwitch, osFreeRTOS}
     of "linux":
       result = conf.target.targetOS in {osLinux, osAndroid}
     of "bsd":
@@ -510,6 +510,10 @@ proc isDefined*(conf: ConfigRef; symbol: string): bool =
     of "sunos": result = conf.target.targetOS == osSolaris
     of "nintendoswitch":
       result = conf.target.targetOS == osNintendoSwitch
+    of "freertos":
+      result = conf.target.targetOS == osFreeRTOS
+    of "lwip":
+      result = conf.target.targetOS in {osFreeRTOS}
     of "littleendian": result = CPU[conf.target.targetCPU].endian == platform.littleEndian
     of "bigendian": result = CPU[conf.target.targetCPU].endian == platform.bigEndian
     of "cpu8": result = CPU[conf.target.targetCPU].bit == 8