Compiling Error

[christianwos]

Hi all,

I am not very good at programming yet and I have a hard time understanding what some of the errors mean. I am trying to compile some code but when I do 'make' I get the following error.

Compiling BeamHist.o
g++: error: missing path after ‘-I’
GNUmakefile:16: recipe for target 'BeamHist.o' failed
make[1]: *** [BeamHist.o] Error 1
make[1]: Leaving directory '/home/christianwos/Desktop/numi_flux_zarko/flux/src'
GNUmakefile:4: recipe for target 'all' failed
make: [all] Error 2 (ignored)

I am not sure about what this means. The makefile is the one posted below. Can anybody explain to me? I did not write this code, I just inherited from someone else.

TARGET = BeamHist

OBJS_CXX = $(TARGET).o data_t.o GnumiHistMaker.o NuWeight.o
SRCS = $(TARGET).C data_t.cxx GnumiHistMaker.cxx NuWeight.cxx

ROOTLIBS = $(shell $(ROOTSYS)/bin/root-config --libs) -lMinuit
EXTRALIBS = -lm -lboost_program_options -L$(BOOST_LIB)

CPPFLAGS   +=  -O3 -m64 -std=c++11
CPPFLAGS   +=  -I$(ROOTSYS)/include -I$(BOOST_INC) 

CC = @echo Compiling $@; g++
LD = @echo Linking $@; ld

%.o: %.C
	$(CC) -c $*.C  $(CPPFLAGS)

#@echo Here...

%.o: %.cxx
	$(CC) -c $*.cxx $(CPPFLAGS)

$(TARGET) : $(OBJS_CXX)
	$(CC) $(OBJS_CXX) $(ROOTLIBS) $(EXTRALIBS) -o $(TARGET)
#	$(CC) -o $(TARGET) $(OBJS_CXX) $(ROOTLIBS) $(EXTRALIBS)
	@cd ../bin; ln -s -f ../src/$(TARGET)

data_t.o: data_t.cxx data_t.h

GnumiHistMaker.o: GnumiHistMaker.cxx GnumiHistMaker.h NuWeight.h data_t.h

NuWeight.o: NuWeight.cxx NuWeight.h

BeamHist.o: data_t.h GnumiHistMaker.h NuWeight.h GnumiHistMaker.h


.PHONY : clean

[keskiverto]

g++: error: missing path after ‘-I’
GNUmakefile:16: recipe for target 'BeamHist.o' failed

Ok, its line 16:

	$(CC) -c $*.cxx $(CPPFLAGS)

Lets put the values of CC, * and CPPFLAGS into that:

@echo Compiling $@; g++  -c BeamHist.C -I$(ROOTSYS)/include -I$(BOOST_INC)

Lets put the values of @, ROOTSYS and BOOST_INC into that:

@echo Compiling BeamHist.o
g++  -c BeamHist.C -I/include -I

There you have it: a lone -I without a pathname after it.

The real issue is that neither the ROOTSYS nor the BOOST_INC environment values have been set any value. Your "uncle" must have had them defined before calling make.

[ne555]

show the build command

CC =  g++
LD = ld

I'll guess that you have undefined variables CPPFLAGS += -I$(ROOTSYS)/include -I$(BOOST_INC)

[christianwos]

Thank you to both of you. I define the ROOTSYS variables by sourcing . bin/thisroot.sh at startup. However, I did not define the BOOST_INC and BOOST_LIB variables.

But I don't know how to find them on my system. The other person had them at

export BOOST_INC=/usr/include/boost
export BOOST_LIB=/usr/lib 

While I also have the above directories on my machine,they must clearly give the wrong path. But I am not sure how to find them. I have tried both

grep -r VARIABLE NAME /etc/*
grep -r VARIABLE NAME ~/.*

to no avail. Is there another way?

[keskiverto]

You should have the boost installed by some means. Hopefully via a package manager. Such manager should have tools to list installed packages and list files of a package.
We can obviously not help about details that you have not told about.

Some of the boost packages must have linkable libraries (*.so or *.a). It is quite likely that they are in /usr/lib or /usr/lib64, but could be elsewhere.

The boost header files could be in /usr/include, but more likely within subdirectory. If I were you, I would look from the source code what headers are included.

It is quite likely that the boost includes contain relative path. For example:

#include <boost/algorithm/cxx11/all_of.hpp>
// rather than
#include <all_of.hpp> 

Lets assume that 'all_of.hpp' is installed, under /usr, and we have not found it by other means:

find /usr -type f -name all_of.hpp -ls

should then list the file.

If the output says that file is:

/usr/include/boost/algorithm/cxx11/all_of.hpp

That would require BOOST_INC=/usr/include

[christianwos]

I do have boost installed under /home/christianwos/.

The BeamHist.C has an

#include <boost/program_options.hpp> 

I found it to be under

/usr/include/boost/program_options.hpp

So the path BOOST_INC=/usr/include should be teh correct one. But for some reason it isn't. What about the BOOST_LIB?

[ne555]

export BOOST_INC=/usr/include/boost
export BOOST_LIB=/usr/lib


#include <boost/program_options.hpp> 

ah, standard path, no need for -I or -L flags


> I do have boost installed under /home/christianwos/.
> I found it to be under /usr/include/boost/program_options.hpp
decide yourself


> But for some reason it isn't
If you've got any error, then post the error verbatim.

[christianwos]

Are you saying that I need to remove the

-L$(BOOST_LIB)
-I$(BOOST_INC)

from lines 7 and 10, respectively?

What I meant is that I have the boost package extracted under
/home/christianwos/boost_1_64_0

but if I do 'locate' program_options.hpp I get two outputs:

/home/christianwos/Desktop/boost_1_64_0/boost/program_options.hpp
/usr/include/boost/program_options.hpp

So, which one is it?

The error is what I posted in my first post.

Compiling BeamHist.o
g++: error: missing path after ‘-I’
GNUmakefile:16: recipe for target 'BeamHist.o' failed
make[1]: *** [BeamHist.o] Error 1
make[1]: Leaving directory '/home/christianwos/Desktop/numi_flux_zarko/flux/src'
GNUmakefile:4: recipe for target 'all' failed
make: [all] Error 2 (ignored)

Thank you.

[ne555]

sure, remove them.
It seems that the library was installed already, and it's in a sane path.
use that one.


> g++: error: missing path after ‘-I’
show your build command. (I'm not talking about make, but the commands that make execute)

[christianwos]

Thank you so much for your help (both of you). Removing the flags helped and I was able to compile the code.