diff --git a/boards/openmote/Makefile.features b/boards/openmote/Makefile.features
index 68545ecde2..27a54eb4d0 100644
--- a/boards/openmote/Makefile.features
+++ b/boards/openmote/Makefile.features
@@ -1 +1,2 @@
+FEATURES_PROVIDED += cpp
 FEATURES_PROVIDED += periph_gpio periph_random periph_cpuid
diff --git a/boards/openmote/Makefile.include b/boards/openmote/Makefile.include
index 44b2a72435..b3b99c5e0b 100644
--- a/boards/openmote/Makefile.include
+++ b/boards/openmote/Makefile.include
@@ -17,6 +17,7 @@ export PORT
 # define tools used for building the project
 export PREFIX = arm-none-eabi-
 export CC = $(PREFIX)gcc
+export CXX = $(PREFIX)g++
 export AR = $(PREFIX)ar
 export AS = $(PREFIX)as
 export LINK = $(PREFIX)gcc
@@ -44,6 +45,10 @@ export FFLAGS = $(BINDIR) $(HEXFILE)
 export DEBUGGER_FLAGS = $(BINDIR) $(ELFFILE)
 export RESET_FLAGS = $(BINDIR)
 
+# unwanted (CXXUWFLAGS) and extra (CXXEXFLAGS) flags for c++
+export CXXUWFLAGS +=
+export CXXEXFLAGS +=
+
 # use the nano-specs of the NewLib when available
 ifeq ($(shell $(LINK) -specs=nano.specs -E - 2>/dev/null >/dev/null </dev/null ; echo $$?),0)
 export LINKFLAGS += -specs=nano.specs -lc -lnosys