From e7f2e04a6aa13a32c68441502a5ba7346cf27519 Mon Sep 17 00:00:00 2001
From: Hauke Petersen <hauke.petersen@fu-berlin.de>
Date: Tue, 18 Nov 2014 18:10:15 +0100
Subject: [PATCH 1/2] cpu/sam3x8e: made _kill(_r) syscalls weak

---
 cpu/sam3x8e/syscalls.c | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/cpu/sam3x8e/syscalls.c b/cpu/sam3x8e/syscalls.c
index f060896592f9..3daae2d46201 100644
--- a/cpu/sam3x8e/syscalls.c
+++ b/cpu/sam3x8e/syscalls.c
@@ -156,7 +156,8 @@ pid_t _getpid(void)
  *
  * @return      TODO
  */
-int _kill_r(struct _reent *r, pid_t pid, int sig)
+__attribute__ ((weak))
+int _kill_r(struct _reent *r, int pid, int sig)
 {
     r->_errno = ESRCH;                      /* not implemented yet */
     return -1;
@@ -323,3 +324,18 @@ int _unlink_r(struct _reent *r, char* path)
     r->_errno = ENODEV;                     /* not implemented yet */
     return -1;
 }
+
+/**
+ * @brief Send a signal to a thread
+ *
+ * @param[in] pid the pid to send to
+ * @param[in] sig the signal to send
+ *
+ * @return TODO
+ */
+__attribute__ ((weak))
+int _kill(int pid, int sig)
+{
+    errno = ESRCH;                         /* not implemented yet */
+    return -1;
+}

From fdbf6720c34ef4432ff9e32b5032c6309a8dd46b Mon Sep 17 00:00:00 2001
From: Hauke Petersen <hauke.petersen@fu-berlin.de>
Date: Tue, 18 Nov 2014 18:11:25 +0100
Subject: [PATCH 2/2] boards: enabled C++ for arduino-due and udoo

---
 boards/arduino-due/Makefile.features | 1 +
 boards/arduino-due/Makefile.include  | 1 +
 boards/udoo/Makefile.features        | 1 +
 boards/udoo/Makefile.include         | 5 +++++
 4 files changed, 8 insertions(+)

diff --git a/boards/arduino-due/Makefile.features b/boards/arduino-due/Makefile.features
index 4f578052e236..1cae147202cd 100644
--- a/boards/arduino-due/Makefile.features
+++ b/boards/arduino-due/Makefile.features
@@ -1 +1,2 @@
+FEATURES_PROVIDED += cpp
 FEATURES_PROVIDED += periph_uart periph_gpio periph_spi periph_random
diff --git a/boards/arduino-due/Makefile.include b/boards/arduino-due/Makefile.include
index eb4b782964c1..adc165b22233 100644
--- a/boards/arduino-due/Makefile.include
+++ b/boards/arduino-due/Makefile.include
@@ -4,6 +4,7 @@ export CPU = sam3x8e
 # 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
diff --git a/boards/udoo/Makefile.features b/boards/udoo/Makefile.features
index 4f578052e236..1cae147202cd 100644
--- a/boards/udoo/Makefile.features
+++ b/boards/udoo/Makefile.features
@@ -1 +1,2 @@
+FEATURES_PROVIDED += cpp
 FEATURES_PROVIDED += periph_uart periph_gpio periph_spi periph_random
diff --git a/boards/udoo/Makefile.include b/boards/udoo/Makefile.include
index 6f539174d052..224e5ee13ebf 100644
--- a/boards/udoo/Makefile.include
+++ b/boards/udoo/Makefile.include
@@ -4,6 +4,7 @@ export CPU = sam3x8e
 # 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 = $(PREFIX)gcc
@@ -38,6 +39,10 @@ export OFLAGS += -O binary
 export FFLAGS += -R -e -w -v -b bin/$(BOARD)/$(APPLICATION).hex
 export TERMFLAGS += -p "$(PORT)"
 
+# 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