WIP: Fix the Cython+ code in order to fix all warnings at compile time in the produced C++ code.

Add debug and options in Makefiles.

Reason: OBS' VM has some -Werror= options causing the compilation to fail.

Makefile

@@ -11,12 +11,13 @@ clean: clean-no-dracut
 
 bin/metadata-collect-agent:
 	echo $(DUMB) # the "shell sed" seems not to be executed without the DUMB variable being used
-	#Error expected here (line -g++ ...), writing a C program using the error messages
+	# Error expected here (line -g++ ...), writing a C program using the error messages
+	# note: it copies the .cpp if present, but copies the .pyx otherwise (and fails if the system cannot compile a Cython+ program the way it is attempter)
 	install -d bin/ ;\
 	mkdir -p build/ ;\
 	cp -r installation/metadata-collect-agent/ build/ ;\
 	mkdir -p build/metadata-collect-agent/logs ;\
-	cp src/main.cpp build/metadata-collect-agent/
+	cp src/main.cpp build/metadata-collect-agent/ || cp src/main.pyx build/metadata-collect-agent/
 	cd build/metadata-collect-agent ;\
 	make
 	install -m 744 build/metadata-collect-agent/metadata-collect-agent bin/

installation/metadata-collect-agent/Makefile

@@ -37,7 +37,7 @@ RUNPATHS = $(RUNPATH_FMTLIB) $(RUNPATH_OPENSSL)
 #EXE = main
 #CXX = g++
 #CPPFLAGS = -O2 -g -Wno-unused-result -Wsign-compare -pthread $(INCLUDE_DIRS) $(LDLIBS) $(LIBRARY_DIRS) $(RUNPATHS)
-CPPFLAGS = -pthread
+CPPFLAGS = -pthread -Wall -Wextra -Werror
 #LDFLAGS += -Wl,--unresolved-symbols=ignore-all
 LDFLAGS = $(LIBRARY_DIRS) $(RUNPATHS)
 LDLIBS = -lcrypto -lfmt
@@ -45,7 +45,16 @@ EXT_SUFFIX := $(shell python3 -c "import sysconfig; print(sysconfig.get_config_v
 EXT = $(EXE)$(EXT_SUFFIX)
 
 # Build without Python runtime
-all: metadata-collect-agent
+all: metadata-collect-agent dev
+
+dev:
+	echo dev:
+	echo LINK.cc = CXX CXXFLAGS CPPFLAGS LDFLAGS TARGET_ARCH
+	echo CXX = $(CXX)
+	echo CXXFLAGS = $(CXXFLAGS)
+	echo CPPFLAGS = $(CPPFLAGS)
+	echo LDFLAGS = $(LDFLAGS)
+	echo TARGET_ARCH = $(TARGET_ARCH)
 
 %.cpp: %.pyx
 	$(info "[Cython Compiling $^ -> $@]")