--- /dev/null
+From cb88e4dd1fbbb9d24e625dba2768b88ed99da309 Mon Sep 17 00:00:00 2001
+From: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+Date: Sat, 13 Jun 2020 22:51:37 +0200
+Subject: [PATCH] CMakeLists.txt: add BUILDCPP option
+
+C++ is a mandatory dependency since version 1.4.0 and
+https://github.com/eclipse/mraa/commit/122cab1f1e53b7c9c7cd82905b962071f9bad9dc
+
+As a result, build on embedded toolchains that do not support C++ fails
+on:
+
+CMake Error at CMakeLists.txt:2 (project):
+ The CMAKE_CXX_COMPILER:
+
+ /home/naourr/work/instance-1/output-1/per-package/mraa/host/bin/arm-linux-g++
+
+ is not a full path to an existing compiler tool.
+
+Fixes:
+ - http://autobuild.buildroot.org/results/31086422e03611c16ab59c4418e3669b580bc0c0
+
+Signed-off-by: Fabrice Fontaine <fontaine.fabrice@gmail.com>
+[Retrieved from:
+https://github.com/eclipse/mraa/commit/cb88e4dd1fbbb9d24e625dba2768b88ed99da309]
+---
+ CMakeLists.txt | 69 +++++++++++++++++++----------------
+ src/java/CMakeLists.txt | 4 +-
+ src/javascript/CMakeLists.txt | 34 +++++++++--------
+ 3 files changed, 59 insertions(+), 48 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 250d9106e..90c0dc920 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -1,5 +1,5 @@
+ cmake_minimum_required (VERSION 2.8.11)
+-project (mraa C CXX)
++project (mraa C)
+
+ FIND_PACKAGE (Threads REQUIRED)
+
+@@ -11,6 +11,8 @@ else ()
+ set (CMAKE_C_STANDARD 99)
+ endif ()
+
++option (BUILDCPP "Enable C++ (needed by FTDI4222 and tests)" ON)
++
+ ###############################################################################
+ # Detect supported warning flags
+ # Modified from work By Dan Liew (fpbench - MIT)
+@@ -33,15 +35,18 @@ set (MRAA_C_WARNING_FLAGS
+ -Werror=missing-parameter-type
+ )
+
+-# Warning flags for the C++ compiler only
+-set (MRAA_CXX_WARNING_FLAGS
+- -Wnon-virtual-dtor
+- -Woverloaded-virtual
+- -Wreorder
+-)
+-
+ include (CheckCCompilerFlag)
+-include (CheckCXXCompilerFlag)
++if (BUILDCPP)
++ # Warning flags for the C++ compiler only
++ set (MRAA_CXX_WARNING_FLAGS
++ -Wnon-virtual-dtor
++ -Woverloaded-virtual
++ -Wreorder
++ )
++
++ enable_language (CXX)
++ include (CheckCXXCompilerFlag)
++endif ()
+ function (MRAA_SANITIZE_FLAG_NAME OUTPUT_VAR FLAG)
+ string (REPLACE "-" "_" SANITIZED_FLAG_NAME "${FLAG}")
+ string (REPLACE "/" "_" SANITIZED_FLAG_NAME "${SANITIZED_FLAG_NAME}")
+@@ -62,28 +67,30 @@ foreach (flag ${MRAA_BOTH_WARNING_FLAGS} ${MRAA_C_WARNING_FLAGS})
+ endif ()
+ endforeach ()
+
+-# Globally set C++ compiler warning flags that are supported and emit
+-# a warning about unsupported flags
+-foreach (flag ${MRAA_BOTH_WARNING_FLAGS} ${MRAA_CXX_WARNING_FLAGS})
+- MRAA_SANITIZE_FLAG_NAME (SANITIZED_FLAG_NAME "${flag}")
+- CHECK_CXX_COMPILER_FLAG ("${flag}" HAS_CXX_${SANITIZED_FLAG_NAME})
+- if (HAS_CXX_${SANITIZED_FLAG_NAME})
+- set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${flag}")
+- else ()
+- message (WARNING "C++ compiler does not support flag \"${flag}\"")
+- endif ()
+-endforeach ()
+-
+-# This function adds the c++11 flag to a c++ target (if supported)
+-function(use_cxx_11 targetname)
+- include(CheckCXXCompilerFlag)
+- CHECK_CXX_COMPILER_FLAG("-std=c++11" COMPILER_SUPPORTS_CXX11)
+- if (COMPILER_SUPPORTS_CXX11)
+- set_target_properties(${targetname} PROPERTIES COMPILE_FLAGS "-std=c++11")
+- else()
+- message(FATAL_ERROR "Target '${targetname}' requires c++11 which is not supported by this compiler")
+- endif()
+-endfunction()
++if (BUILDCPP)
++ # Globally set C++ compiler warning flags that are supported and emit
++ # a warning about unsupported flags
++ foreach (flag ${MRAA_BOTH_WARNING_FLAGS} ${MRAA_CXX_WARNING_FLAGS})
++ MRAA_SANITIZE_FLAG_NAME (SANITIZED_FLAG_NAME "${flag}")
++ CHECK_CXX_COMPILER_FLAG ("${flag}" HAS_CXX_${SANITIZED_FLAG_NAME})
++ if (HAS_CXX_${SANITIZED_FLAG_NAME})
++ set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${flag}")
++ else ()
++ message (WARNING "C++ compiler does not support flag \"${flag}\"")
++ endif ()
++ endforeach ()
++
++ # This function adds the c++11 flag to a c++ target (if supported)
++ function(use_cxx_11 targetname)
++ include(CheckCXXCompilerFlag)
++ CHECK_CXX_COMPILER_FLAG("-std=c++11" COMPILER_SUPPORTS_CXX11)
++ if (COMPILER_SUPPORTS_CXX11)
++ set_target_properties(${targetname} PROPERTIES COMPILE_FLAGS "-std=c++11")
++ else()
++ message(FATAL_ERROR "Target '${targetname}' requires c++11 which is not supported by this compiler")
++ endif()
++ endfunction()
++endif()
+
+ # Set CMAKE_INSTALL_LIBDIR if not defined
+ include(GNUInstallDirs)
+diff --git a/src/java/CMakeLists.txt b/src/java/CMakeLists.txt
+index 231c755fa..cfa72a0df 100644
+--- a/src/java/CMakeLists.txt
++++ b/src/java/CMakeLists.txt
+@@ -16,7 +16,9 @@ include_directories (
+ set_source_files_properties (mraajava.i PROPERTIES SWIG_FLAGS ";-package;mraa;-I${CMAKE_BINARY_DIR}/src")
+ set_source_files_properties (mraajava.i PROPERTIES CPLUSPLUS ON)
+
+-set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fpermissive -DJAVACALLBACK")
++if (BUILDCPP)
++ set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fpermissive -DJAVACALLBACK")
++endif()
+ set (CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -DJAVACALLBACK")
+
+ if (NOT DEFINED ENV{JAVA_HOME_NATIVE})
+diff --git a/src/javascript/CMakeLists.txt b/src/javascript/CMakeLists.txt
+index 25fd36275..99a96b49d 100644
+--- a/src/javascript/CMakeLists.txt
++++ b/src/javascript/CMakeLists.txt
+@@ -36,25 +36,27 @@ set_target_properties (mraajs PROPERTIES
+ )
+
+ message (STATUS "INFO - swig Version ${SWIG_VERSION}")
+-message (STATUS "INFO - CXX compiler Version ${CMAKE_CXX_COMPILER_ID} ${CMAKE_CXX_COMPILER_VERSION}")
++if (BUILDCPP)
++ message (STATUS "INFO - CXX compiler Version ${CMAKE_CXX_COMPILER_ID} ${CMAKE_CXX_COMPILER_VERSION}")
+
+-if (${V8_VERSION_MAJOR} GREATER 3)
+- message (STATUS "INFO - Using V8 version > 3 so requiring C++11 compiler")
+- # Node 0.12.x V8 engine major version is '3'.
+- # Node 2.1.0 V8 engine major version is '4'.
+- set_property (TARGET mraajs PROPERTY CXX_STANDARD 11)
+- set_property (TARGET mraajs PROPERTY CXX_STANDARD_REQUIRED ON)
+- if (CMAKE_VERSION VERSION_LESS "3.1")
+- message (WARNING "Need to use CMAKE version 3.1+, but it is ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}.${CMAKE_PATCH_VERSION}, using a workaround.")
+- if (CMAKE_COMPILER_IS_GNUCXX)
+- if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "4.7")
+- message (FATAL_ERROR "GNU gcc compiler is also too old (need 4.7+, but ${CMAKE_CXX_COMPILER_VERSION}) and does not support C++11 standard.")
++ if (${V8_VERSION_MAJOR} GREATER 3)
++ message (STATUS "INFO - Using V8 version > 3 so requiring C++11 compiler")
++ # Node 0.12.x V8 engine major version is '3'.
++ # Node 2.1.0 V8 engine major version is '4'.
++ set_property (TARGET mraajs PROPERTY CXX_STANDARD 11)
++ set_property (TARGET mraajs PROPERTY CXX_STANDARD_REQUIRED ON)
++ if (CMAKE_VERSION VERSION_LESS "3.1")
++ message (WARNING "Need to use CMAKE version 3.1+, but it is ${CMAKE_MAJOR_VERSION}.${CMAKE_MINOR_VERSION}.${CMAKE_PATCH_VERSION}, using a workaround.")
++ if (CMAKE_COMPILER_IS_GNUCXX)
++ if (CMAKE_CXX_COMPILER_VERSION VERSION_LESS "4.7")
++ message (FATAL_ERROR "GNU gcc compiler is also too old (need 4.7+, but ${CMAKE_CXX_COMPILER_VERSION}) and does not support C++11 standard.")
++ endif ()
++ set (MRAA_CXX11_WORKAROUND_OPTION "-std=gnu++11")
++ else ()
++ set (MRAA_CXX11_WORKAROUND_OPTION "-std=c++11")
+ endif ()
+- set (MRAA_CXX11_WORKAROUND_OPTION "-std=gnu++11")
+- else ()
+- set (MRAA_CXX11_WORKAROUND_OPTION "-std=c++11")
++ set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${MRAA_CXX11_WORKAROUND_OPTION} ")
+ endif ()
+- set (CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} ${MRAA_CXX11_WORKAROUND_OPTION} ")
+ endif ()
+ endif ()
+
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