Root-config: No such file or directory

[ilichatz]

---

ROOT Version: 6.16/00
Platform: Ubuntu 18.04
Compiler: gcc 7.3.0

---

Hello there.
I am trying to link ROOT (version 6.16.00) and PYTHIA8 (version 8.240) following the instructions from http://home.thep.lu.se/Pythia/pythia82html/ROOTusage.html
I can run Pythia as a plugin because the Pythia8.C from myROOTdirectory/tutorials/pythia is running, but I can’t run main91.cc and also main92-93 from myPYTHIAdirectory/examples.
Compiler gives me the following:

g++ main91.cc -o main91 -w -I -I../include -O2  -pedantic -W -Wall -Wshadow -fPIC -L../lib -Wl,-rpath,../lib -lpythia8 -ldl \
 `/root-config --cflags`\
 -Wl,-rpath, `/home/ilias/root/bin/root-config --glibs`
bash: /root-config: No such file or directory
main91.cc:15:10: fatal error: Pythia8/Pythia.h: No such file or directory
 #include "Pythia8/Pythia.h"
          ^~~~~~~~~~~~~~~~~~
compilation terminated.
Makefile:152: recipe for target 'main91' failed
make: *** [main91] Error 1

I provide also the info from the Makefile in myPYTHIAdirectory/examples

main91: $$@.cc $(PREFIX_LIB)/libpythia8.a
ifeq ($(ROOT_USE),true)
	$(CXX) $< -o $@ -w -I$(ROOT_INCLUDE) $(CXX_COMMON)\
	 `$(ROOTBIN)/root-config --cflags`\
	 -Wl,-rpath,$(ROOT_LIB) `$(ROOT_BIN)/root-config --glibs`
else
	@echo "Error: $@ requires ROOT"
endif
main92: $$@.cc $(PREFIX_LIB)/libpythia8.a main92.so
ifeq ($(ROOT_USE),true)
	$(CXX) $< main92.so -o $@ -w -I$(ROOT_INCLUDE) $(CXX_COMMON)\
	 `$(ROOTBIN)root-config --cflags` -Wl,-rpath,./\
	 -Wl,-rpath,$(ROOT_LIB) `$(ROOT_BIN)root-config --glibs`
else
	@echo "Error: $@ requires ROOT"
endif
main92.so: main92Dct.cc $(PREFIX_LIB)/libpythia8.a
	$(CXX) $< -o $@ -w -I$(ROOT_INCLUDE) $(CXX_SHARED) $(CXX_COMMON)\
	 `$(ROOTBIN)root-config --cflags`
main92Dct.cc: main92.h main92LinkDef.h
	export LD_LIBRARY_PATH=$$LD_LIBRARY_PATH:$(ROOT_LIB);\
	 $(ROOT_BIN)rootcint -f $@ -c -I$(PREFIX_INCLUDE) $^

# main93 with several dependencies. It is assumed that
# Rivet and YODA are installed to system path or appended to it.
main93: $$@.cc $(PREFIX_LIB)/libpythia8.a main93.so
ifeq ($(ROOT_USE),true)
	$(CXX) $< main93.so -o $@ -DUSE_ROOT -DUSE_YODA -std=c++11 -w -I$(ROOT_INCLUDE) $(CXX_COMMON)\
	 `$(ROOTBIN)root-config --cflags` -Wl,-rpath,./\
	 -Wl,-rpath,$(ROOT_LIB) `$(ROOT_BIN)root-config --glibs` -lYODA\
	 -lHepMC -lRivet  $(GZIP_INC) $(GZIP_FLAGS)
else
	$(CXX) $< -o $@ -DUSE_YODA -std=c++11 -w $(CXX_COMMON) -lYODA\
	 -lHepMC -lRivet  $(GZIP_INC) $(GZIP_FLAGS)
endif
main93.so: main93Dct.cc $(PREFIX_LIB)/libpythia8.a
ifeq ($(ROOT_USE),true)
	$(CXX) $< -o $@ -w -I$(ROOT_INCLUDE) $(CXX_SHARED) $(CXX_COMMON)\
	 `$(ROOTBIN)root-config --cflags`
else
	@echo "Skipping Root shared library"
endif
main93Dct.cc: main93.h main93LinkDef.h
ifeq ($(ROOT_USE),true)
	export LD_LIBRARY_PATH=$$LD_LIBRARY_PATH:$(ROOT_LIB);\
	 $(ROOT_BIN)rootcint -f $@ -c -I$(PREFIX_INCLUDE) $^
else
	@echo "Skipping Root dictionary"
endif

and also from .bashrc file

# Root path and libraries:
. $HOME/root/bin/thisroot.sh
export ROOTSYS=$HOME/root
export PATH=$PATH:$ROOTSYS/bin
export LD_LIBRARY_PATH=$LD_LIBRARY_PATH:$ROOTSYS/lib

# Pythia 8 path and libraries:
export PYTHIA8=$HOME/Progs/pythia8240 
export PYTHIA8DATA=$HOME/Progs/pythia8240/share/Pythia8/xmldoc
export LD_LIBRARY_PATH=$PYTHIA8/lib

I would appreciate your help very much into making these mains work!

Some extra detail I forgot, likely relevant:
-the path root/bin is concatenated with the file needed in this folder e.g.
root/binroot-config --glibs instead of root/bin/root-config
Above I added a “/” to the makefile for main91 after (ROOTBIN), eg

main91: $$@.cc $(PREFIX_LIB)/libpythia8.a
ifeq ($(ROOT_USE),true)
$(CXX) $< -o $@ -w -I$(ROOT_INCLUDE) $(CXX_COMMON)
`$(ROOTBIN)/root-config --cflags`
-Wl,-rpath,$(ROOT_LIB)  `$(ROOT_BIN)/root-config --glibs`

and it is printed correct, but still not found.

main92 and main93 have the same problem

[Danilo]

Hi,

it looks like something is not configured correctly in your environment. The system is looking for the root-config script in the linux / directory (see bash: /root-config: No such file or directory) which is most likely the wrong place.

Cheers,
D

[ilichatz]

Thank you for your reply Danilo!
root-config is in the folder $HOME/root/bin/

Is there something I must change in the .bashrc file? ( I posted above what commands relative to ROOT it contains).
Or should I install everything from the beginning?

[Danilo]

Hi,

source $HOME/root/bin/thisroot.sh is the easiest.

Cheers,
D

[ilichatz]

Hello again Danilo.
The terminal output
bash: /root-config: No such file or directory
was because I added a " \ " character trying to fixing the original problem, as I stated above:
bash: /home/ilias/root/binroot-config: No such file or directory

Note how the bin/root-config became binroot-config
I also had already in my .bashrc :
. $HOME/root/bin/thisroot.sh

No progress at all

[Wile_E_Coyote]

It seems that “${ROOT_BIN}” works, while “${ROOTBIN}” does not.

When you source “thisroot.sh”, there is no need to set “ROOTSYS”, “PATH”, “LD_LIBRARY_PATH”.

BTW. When you post “source code” or “output” here, do remember to enclose them into two lines which contain just three characters ``` (see how your post has been edited above).

[ilichatz]

Thanks for your advice Wile!
ROOT_BIN and ROOTBIN are as the “default” Makefile of pythia8240/examples was. I tried editing making both ROOT_BIN, and still i get

bash: /home/ilias/root/binroot-config: No such file or directory
bash: /home/ilias/root/binroot-config: No such file or directory

Then I tried changing both to ROOTBIN and it’s ok!
It remains one more problem that i thought it was derived by this, but it is likely independent:

g++ main91.cc -o main91 -w -I -I../include -O2  -pedantic -W -Wall -Wshadow -fPIC -L../lib -Wl,-rpath,../lib -lpythia8 -ldl \
 `root-config --cflags`\
 -Wl,-rpath, `root-config --glibs`
main91.cc:15:10: fatal error: Pythia8/Pythia.h: No such file or directory
 #include "Pythia8/Pythia.h"
          ^~~~~~~~~~~~~~~~~~
compilation terminated.
Makefile:152: recipe for target 'main91' failed
make: *** [main91] Error 1