Open-zwave is a great project, it provides a software interface to z-wave networks. Z-wave is a popular home automation protocol.
With more and more devices coming I was interested in adding z-wave support to my own home automation software.
Being a python fanatic, I wanted to use open-zwave from within python. The first step in this process was getting open-zwave to compile with MingW, which I can then use to create a python wrapper later on (hint, some more posts coming soon 🙂 )
MinGW is a minimalist GNU implementation for Windows, and it’s widely used for several python modules.
MinGW also uses a make command, to built and maintain c/c++ programs. So the first step I had to take was to create a Makefile for MinGW.
This was actually quite easy, I took the Linux Makefile and modified it accordingly:
# # Makefile for OpenZWave Linux build # Greg Satz # Modified for use with MinGW by Maarten Damen # Requires libudev-dev .SUFFIXES: .d .cpp .o .a .PHONY: default clean CC := $(CROSS_COMPILE)gcc CXX := $(CROSS_COMPILE)g++ LD := $(CROSS_COMPILE)g++ AR := $(CROSS_COMPILE)ar rc RANLIB := $(CROSS_COMPILE)ranlib DEBUG_CFLAGS := -Wall -Wno-format -g -DDEBUG -DLOG_STDERR RELEASE_CFLAGS := -Wall -Wno-unknown-pragmas -Wno-format -O3 DEBUG_LDFLAGS := -g # Change for DEBUG or RELEASE CFLAGS := -c $(DEBUG_CFLAGS) LDFLAGS := $(DEBUG_LDFLAGS) LIBDIR := ../../lib/windows-mingw32 INCLUDES := -I ../../src -I ../../src/command_classes/ -I ../../src/value_classes/ \ -I ../../src/platform/ -I ../../src/platform/windows -I ../../tinyxml/ -I ../../hidapi/hidapi/ SOURCES := ../../src ../../src/command_classes ../../tinyxml ../../hidapi/windows \ ../../src/value_classes ../../src/platform ../../src/platform/windows VPATH = ../../src:../../src/command_classes:../../tinyxml:../../hidapi/windows:\ ../../src/value_classes:../../src/platform:../../src/platform/windows %.d : %.cpp @set -e; rm -f $@; \ $(CXX) -MM $(INCLUDES) $< > $@.$$$$; \ sed 's,\($*\)\.o[ :]*,\1.o $@ : ,g' < $@.$$$$ > $@; \ rm -f $@.$$$$ tinyxml := $(notdir $(wildcard ../../tinyxml/*.cpp)) hidapi := $(notdir $(wildcard ../../hidapi/linux/hid.c)) # we do not want the libusb version cclasses := $(notdir $(wildcard ../../src/command_classes/*.cpp)) vclasses := $(notdir $(wildcard ../../src/value_classes/*.cpp)) pform := $(notdir $(wildcard ../../src/platform/*.cpp)) \ $(notdir $(wildcard ../../src/platform/windows/*.cpp)) indep := $(notdir $(wildcard ../../src/*.cpp)) %.o : %.cpp $(CXX) $(CFLAGS) $(INCLUDES) -o $@ $< %.o : %.c $(CC) $(CFLAGS) $(INCLUDES) -o $@ $< default: $(LIBDIR)/openzwave.a clean: rm -f *.d *.o -include $(tinyxml:.cpp=.d) -include $(hidapi:.c=.d) -include $(cclasses:.cpp=.d) -include $(vclasses:.cpp=.d) -include $(pform:.cpp=.d) -include $(indep:.cpp=.d) vers.c: echo 'char ozw_vers = "OpenZWave version 1.0.'`svnversion ../..`'";' > vers.c vers.o: vers.c $(LIBDIR)/openzwave.a: $(patsubst %.cpp,%.o,$(tinyxml)) \ $(patsubst %.c,%.o,$(hidapi)) \ $(patsubst %.cpp,%.o,$(cclasses)) \ $(patsubst %.cpp,%.o,$(vclasses)) \ $(patsubst %.cpp,%.o,$(pform)) \ $(patsubst %.cpp,%.o,$(indep)) vers.o $(AR) $@ $?
For the sake of maintainability I created the following folders in the open-zwave folder structure:
– openzwave/cpp/build/windows-mingw32 <- for the custom Makefile - openzwave/cpp/lib/windows-mingw32 <- for the output library file After setting all of this up, I was ready to run the 'make' command. Uh oh, troubles:
This is caused because a non c++ standard function “sprintf_s” is used within some of open-zwave’s files.
Fortunately there is a similar standard c++ function called snprintf, the fix was easy (put this on top of the cpp/src/platform/windows/HidControllerImpl.cpp file):
#define sprintf_s snprintf
Will it build now? No, way..
This is again caused by use of non-standard functions: fprint_s and fopen_s. The fix is to put this in the head section of the cpp/src/platform/windows/LogImpl.cpp file:
#define sprintf_s snprintf
The fix for the fopen_s command is a bit trickier, I replaced it with the standard fopen command. Replace all parts in the LogImpl.cpp file where opening of files takes place:
FILE* pFile = NULL; if( !fopen_s( &pFile, m_filename.c_str(), "a" ) )
Replace it with the fopen equivalent:
FILE* pFile = fopen( m_filename.c_str(), "a" ); if ( pFile != NULL )
Rerun the ‘make’ command and open-zwave should now compile correctly with MinGW! The output library is roughly 31MB.
You have probably been using Home Assistant for quite a while, but lately you have wondered how to enable remote access to your Home Assistant installation. This is a very common question and one way...
As you might know, Google has shut down the Works with Nest program since the 31st of August 2019. Since then there was no official way to integrate Nest products with Home Assistant. Lets not talk...