Issue compiling root 5.34/18 with g++ (Ubuntu/Linaro 4.6

jdc · July 15, 2014, 3:35pm

I’m trying to compile a script and g++ is giving me a lot of “Undefined reference to `TTree::TTree(char const*, char const*, int)’” or similar when I try to make run (run being the name of the script).

results of make run.o
[myname]@[mypc]$ make run.o
g++ -c -g -Wall /home/[myname]/root_tmp/root/bin/root-config --cflags -c -o run.o run.c

and works fine, run.o is created
make run however fails, the full log is at the bottom of this post.

I have all the necessary includes for my script, so that cannot be the issue.

First, my makefile, because that seems more likely to be where things are wrong

CC=g++
CFLAGS=-c -g -Wall `/home/[myname]/root_tmp/root/bin/root-config --cflags`
LDFLAGS=-L`root-config --libdir` `/home/[myname]/root_tmp/root/bin/root-config --glibs`
SOURCES=run.cc
OBJECTS=$(SOURCES:.cc=.o)
EXECUTABLE=main

all: $(SOURCES) $(EXECUTABLE)

$(EXECUTABLE): $(OBJECTS)
	$(CC) $(LDFLAGS) $(OBJECTS) -o $@

.cc.o:
	$(CC) $(CFLAGS) $< -o $@

clean:
	rm ./*~ ./*.o

Now the entire output of trying to create an executable from the object:

[myname]@[mypc]:~/sas$ make run g++ `/home/[myname]/root_tmp/root/bin/root-config --glibs` run.o -o run run.o: In function `main': /home/[myname]/sas/run.c:21: undefined reference to `TTree::TTree(char const*, char const*, int)' /home/[myname]/sas/run.c:22: undefined reference to `TTree::ReadFile(char const*, char const*, char)' /home/[myname]/sas/run.c:26: undefined reference to `TCanvas::TCanvas(char const*, char const*, int)' /home/[myname]/sas/run.c:59: undefined reference to `TTree::GetEntry(long long, int)' /home/[myname]/sas/run.c:128: undefined reference to `TGraph::TGraph(int, double const*, double const*)' /home/[myname]/sas/run.c:132: undefined reference to `TF1::TF1(char const*, char const*, double, double)' /home/[myname]/sas/run.c:135: undefined reference to `TFormula::SetParameters(double, double, double, double, double, double, double, double, double, double, double)' /home/[myname]/sas/run.c:137: undefined reference to `TFormula::SetParNames(char const*, char const*, char const*, char const*, char const*, char const*, char const*, char const*, char const*, char const*, char const*)' /home/[myname]/sas/run.c:144: undefined reference to `TGraph::Fit(TF1*, char const*, char const*, double, double)' /home/[myname]/sas/run.c:144: undefined reference to `TFitResultPtr::~TFitResultPtr()' /home/[myname]/sas/run.c:151: undefined reference to `TGraph::Draw(char const*)' /home/[myname]/sas/run.c:152: undefined reference to `TGraph::SetTitle(char const*)' /home/[myname]/sas/run.c:153: undefined reference to `TGraph::GetXaxis() const' /home/[myname]/sas/run.c:154: undefined reference to `TGraph::GetYaxis() const' /home/[myname]/sas/run.c:158: undefined reference to `TPad::Print(char const*) const' /home/[myname]/sas/run.c:164: undefined reference to `TFormula::GetParameter(int) const' /home/[myname]/sas/run.c:165: undefined reference to `TFormula::GetParameter(int) const' /home/[myname]/sas/run.c:272: undefined reference to `TF1::TF1(char const*, char const*, double, double)' /home/[myname]/sas/run.c:278: undefined reference to `TF1::GetRange(double&, double&) const' /home/[myname]/sas/run.c:285: undefined reference to `TF1::Eval(double, double, double, double) const' /home/[myname]/sas/run.c:295: undefined reference to `TF1::TF1(char const*, char const*, double, double)' /home/[myname]/sas/run.c:300: undefined reference to `TF1::GetRange(double&, double&) const' /home/[myname]/sas/run.c:307: undefined reference to `TF1::Eval(double, double, double, double) const' /home/[myname]/sas/run.c:327: undefined reference to `TCanvas::Clear(char const*)' /home/[myname]/sas/run.c:328: undefined reference to `TPad::Print(char const*) const' /home/[myname]/sas/run.c:331: undefined reference to `TPad::Divide(int, int, float, float, int)' /home/[myname]/sas/run.c:334: undefined reference to `TCanvas::cd(int)' /home/[myname]/sas/run.c:335: undefined reference to `TGraph::TGraph(int, double const*, double const*)' /home/[myname]/sas/run.c:336: undefined reference to `TGraph::Draw(char const*)' /home/[myname]/sas/run.c:336: undefined reference to `TGraph::SetTitle(char const*)' /home/[myname]/sas/run.c:337: undefined reference to `TGraph::GetXaxis() const' /home/[myname]/sas/run.c:338: undefined reference to `TGraph::GetYaxis() const' /home/[myname]/sas/run.c:342: undefined reference to `TCanvas::cd(int)' /home/[myname]/sas/run.c:343: undefined reference to `TGraph::TGraph(int, double const*, double const*)' /home/[myname]/sas/run.c:344: undefined reference to `TGraph::Draw(char const*)' /home/[myname]/sas/run.c:344: undefined reference to `TGraph::SetTitle(char const*)' /home/[myname]/sas/run.c:345: undefined reference to `TGraph::GetXaxis() const' /home/[myname]/sas/run.c:346: undefined reference to `TGraph::GetYaxis() const' /home/[myname]/sas/run.c:349: undefined reference to `TCanvas::cd(int)' /home/[myname]/sas/run.c:350: undefined reference to `TGraph::TGraph(int, double const*, double const*)' /home/[myname]/sas/run.c:351: undefined reference to `TGraph::Draw(char const*)' /home/[myname]/sas/run.c:351: undefined reference to `TGraph::SetTitle(char const*)' /home/[myname]/sas/run.c:352: undefined reference to `TGraph::GetXaxis() const' /home/[myname]/sas/run.c:353: undefined reference to `TGraph::GetYaxis() const' /home/[myname]/sas/run.c:356: undefined reference to `TCanvas::cd(int)' /home/[myname]/sas/run.c:357: undefined reference to `TGraph::TGraph(int, double const*, double const*)' /home/[myname]/sas/run.c:358: undefined reference to `TGraph::Draw(char const*)' /home/[myname]/sas/run.c:358: undefined reference to `TGraph::SetTitle(char const*)' /home/[myname]/sas/run.c:359: undefined reference to `TGraph::GetXaxis() const' /home/[myname]/sas/run.c:360: undefined reference to `TGraph::GetYaxis() const' /home/[myname]/sas/run.c:362: undefined reference to `TPad::Print(char const*) const' /home/[myname]/sas/run.c:364: undefined reference to `TCanvas::Clear(char const*)' /home/[myname]/sas/run.c:365: undefined reference to `TPad::Divide(int, int, float, float, int)' /home/[myname]/sas/run.c:368: undefined reference to `TCanvas::cd(int)' /home/[myname]/sas/run.c:371: undefined reference to `TGraph::TGraph(int, double const*, double const*)' /home/[myname]/sas/run.c:372: undefined reference to `TGraph::Draw(char const*)' /home/[myname]/sas/run.c:372: undefined reference to `TGraph::SetTitle(char const*)' /home/[myname]/sas/run.c:373: undefined reference to `TGraph::GetXaxis() const' /home/[myname]/sas/run.c:374: undefined reference to `TGraph::GetYaxis() const' /home/[myname]/sas/run.c:375: undefined reference to `TGraph::GetYaxis() const' /home/[myname]/sas/run.c:378: undefined reference to `TCanvas::cd(int)' /home/[myname]/sas/run.c:380: undefined reference to `TGraph::TGraph(int, double const*, double const*)' /home/[myname]/sas/run.c:381: undefined reference to `TGraph::Draw(char const*)' /home/[myname]/sas/run.c:381: undefined reference to `TGraph::SetTitle(char const*)' /home/[myname]/sas/run.c:382: undefined reference to `TGraph::GetXaxis() const' /home/[myname]/sas/run.c:383: undefined reference to `TGraph::GetYaxis() const' /home/[myname]/sas/run.c:384: undefined reference to `TGraph::GetYaxis() const' /home/[myname]/sas/run.c:387: undefined reference to `TPad::Print(char const*) const' /home/[myname]/sas/run.c:390: undefined reference to `TPad::Print(char const*) const' /home/[myname]/sas/run.c:390: undefined reference to `TGraph::~TGraph()' /home/[myname]/sas/run.c:390: undefined reference to `TGraph::~TGraph()' /home/[myname]/sas/run.c:390: undefined reference to `TGraph::~TGraph()' /home/[myname]/sas/run.c:390: undefined reference to `TGraph::~TGraph()' /home/[myname]/sas/run.c:390: undefined reference to `TGraph::~TGraph()' run.o:/home/[myname]/sas/run.c:390: more undefined references to `TGraph::~TGraph()' follow run.o: In function `main': /home/[myname]/sas/run.c:390: undefined reference to `TF1::~TF1()' /home/[myname]/sas/run.c:390: undefined reference to `TF1::~TF1()' /home/[myname]/sas/run.c:390: undefined reference to `TF1::~TF1()' /home/[myname]/sas/run.c:390: undefined reference to `TGraph::~TGraph()' /home/[myname]/sas/run.c:390: undefined reference to `TCanvas::~TCanvas()' /home/[myname]/sas/run.c:390: undefined reference to `TTree::~TTree()' /home/[myname]/sas/run.c:390: undefined reference to `TGraph::~TGraph()' /home/[myname]/sas/run.c:390: undefined reference to `TGraph::~TGraph()' /home/[myname]/sas/run.c:390: undefined reference to `TGraph::~TGraph()' /home/[myname]/sas/run.c:390: undefined reference to `TGraph::~TGraph()' /home/[myname]/sas/run.c:390: undefined reference to `TGraph::~TGraph()' run.o:/home/[myname]/sas/run.c:390: more undefined references to `TGraph::~TGraph()' follow run.o: In function `main': /home/[myname]/sas/run.c:390: undefined reference to `TF1::~TF1()' /home/[myname]/sas/run.c:390: undefined reference to `TF1::~TF1()' /home/[myname]/sas/run.c:390: undefined reference to `TF1::~TF1()' /home/[myname]/sas/run.c:390: undefined reference to `TGraph::~TGraph()' /home/[myname]/sas/run.c:390: undefined reference to `TCanvas::~TCanvas()' /home/[myname]/sas/run.c:390: undefined reference to `TTree::~TTree()' run.o: In function `__static_initialization_and_destruction_0': /home/[myname]/root_tmp/root/include/TVersionCheck.h:34: undefined reference to `TVersionCheck::TVersionCheck(int)' run.o: In function `TCanvasImp::IsA() const': /home/[myname]/root_tmp/root/include/TCanvasImp.h:80: undefined reference to `TCanvasImp::Class()' run.o: In function `int TTree::SetBranchAddress<float>(char const*, float*, TBranch**)': /home/[myname]/root_tmp/root/include/TTree.h:504: undefined reference to `TClass::GetClass(std::type_info const&, bool, bool)' /home/[myname]/root_tmp/root/include/TTree.h:506: undefined reference to `TDataType::GetType(std::type_info const&)' run.o:(.rodata._ZTV10TCanvasImp[vtable for TCanvasImp]+0xf8): undefined reference to `TCanvasImp::ShowMembers(TMemberInspector&)' run.o:(.rodata._ZTV10TCanvasImp[vtable for TCanvasImp]+0x100): undefined reference to `TCanvasImp::Streamer(TBuffer&)' run.o: In function `~eline_t': /home/[myname]/sas/lookupgen.h:3: undefined reference to `TString::~TString()' collect2: ld returned 1 exit status make: *** [run] Error 1

couet · July 15, 2014, 3:45pm

if you type:

root-config --glibs

what do you get ?

jdc · July 15, 2014, 3:47pm

-L/home/[myname]/root_tmp/root/lib -lGui -lCore -lCint -lRIO -lNet -lHist -lGraf -lGraf3d -lGpad -lTree -lRint -lPostscript -lMatrix -lPhysics -lMathCore -lThread -pthread -lm -ldl -rdynamic

So I doubled the -L. However removing my first -L didn’t fix the problem

Wile_E_Coyote · July 15, 2014, 3:49pm

Try with:

LDFLAGS=/home/[myname]/root_tmp/root/bin/root-config --ldflags --glibs

$(CC) -o $@ $(OBJECTS) $(LDFLAGS)

jdc · July 15, 2014, 3:51pm

make run leads to the same result

couet · July 15, 2014, 4:03pm

go in the place where your ROOT is installed and “source” one of the “thisroot” script in the bin directory

jdc · July 15, 2014, 5:07pm

already do that, manually doing it again makes no difference

Wile_E_Coyote · July 15, 2014, 5:26pm

Could you, please, try to manually execute: /home/[myname]/root_tmp/root/bin/root-config --ldflags --glibs g++ -o run run.o `/home/[myname]/root_tmp/root/bin/root-config --ldflags --glibs` and post the output of these two comands here.

jdc · July 15, 2014, 5:29pm

that worked, not sure why, but it did

Wile_E_Coyote · July 15, 2014, 5:31pm

In my first post above, I told you to change the line:
$(CC) $(LDFLAGS) $(OBJECTS) -o $@
into:
$(CC) -o $@ $(OBJECTS) $(LDFLAGS)

jdc · July 15, 2014, 5:34pm

Which I did.

Wile_E_Coyote · July 15, 2014, 5:38pm

So try to “make clean” and then recompile it from scratch again.
Inspect the linking command line -> the order of all elements should be exactly the same as in the “manual linking” command line.

Wile_E_Coyote · July 15, 2014, 5:41pm

I’ve found something rather strange … in your makefile, I can see:
EXECUTABLE=main
but then you link the “run” executable (and there’s no rule to link it in your makefile so make takes some “default” rule which is not appropriate, I believe).
Try to change this line into:
EXECUTABLE=run

jdc · July 15, 2014, 6:02pm

I’ve tried comparing the lines, and making the exectuable comes up (wrongly) with

after changing executable to run

g++ -o run `/home/[myname]/root_tmp/root/bin/root-config --ldflags --glibs` /usr/lib/gcc/x86_64-linux-gnu/4.6/../../../x86_64-linux-gnu/crt1.o: In function `_start': (.text+0x20): undefined reference to `main' collect2: ld returned 1 exit status make: *** [run] Error 1

Wile_E_Coyote · July 15, 2014, 6:24pm

I can see another problem … in you first post, I find:
g++ -c … run.c
but your makefile expects a “run.cc” file (well, try simply to rename “run.c” into “run.cc”).