[TMVA] Configure tutorials/tmva/makefile (#2547)

[TMVA] Configure tutorials/tmva/makefile

Example makefile from tutorials/tmva should use the same c++ standard as
ROOT (otherwise one faces errors from string views in the root headers
when building the tutorials).

CMakeLists.txt

@@ -148,7 +148,7 @@ set(artifact_files_builddir)
 foreach(artifact_file ${artifact_files})
   # Filter out hsimple.root; someone might have created it in the src dir, and the hsimple.root
   # target below will interfere.
-  if (NOT (tutorial_file STREQUAL "tutorials/hsimple.root"))
+  if (NOT (artifact_file STREQUAL "tutorials/hsimple.root"))
     add_custom_command(OUTPUT ${CMAKE_BINARY_DIR}/${artifact_file}
       COMMAND ${CMAKE_COMMAND} -E copy ${CMAKE_SOURCE_DIR}/${artifact_file} ${CMAKE_BINARY_DIR}/${artifact_file}
       COMMENT "Copying ${CMAKE_SOURCE_DIR}/${artifact_file}"

tutorials/tmva/makefile

@@ -16,21 +16,20 @@ BINS = TMVAClassification \
 
 
 CXX = g++
-CCFLAGS = -O0 -ggdb -std=c++11 
+CCFLAGS = $(shell root-config --cflags) -ggdb
 
 
 LD = g++
 LDFLAGS = 
 
-LIBS = $(shell root-config --libdir) 
-INCS = $(shell root-config --incdir)  
+LIBS = $(shell root-config --libs) -lMLP -lMinuit -lTreePlayer -lTMVA -lTMVAGui -lXMLIO  -lMLP -lm
 
 
 default : $(BINS)
 
 $(BINS): % : %.C 
 	@echo -n "Building $@ ... "
-	$(CXX) $(CCFLAGS) $<  $(addprefix -I, $(INCS))  $(shell root-config --libs) -lMLP -lMinuit -lTreePlayer -lTMVA -lTMVAGui -lXMLIO  -lMLP -lm  -g -o $@
+	$(CXX) $(CCFLAGS) $< $(LIBS) -o $@
 	@echo "Done"