Inconsist in Makefile for Geant4 and ROOT functionality.

From: Rafal Lalik <r.lalik_at_gsi.de>
Date: Sun, 27 Jul 2008 16:41:50 +0200

Dear All,

I am little bit confused about Makefile for Geant4-VMC (and also other Geants as i remember). Lets quote something:

• CUT HERE ---

ifeq ($(ROOTSYS),)

ROOT_INCDIR = $(shell root-config --incdir)
ROOT_BINDIR = $(shell root-config --prefix)/bin
ROOT_ETCDIR = $(shell root-config --prefix)/etc/vmc

else

ROOT_INCDIR = $(ROOTSYS)/include
ROOT_BINDIR = $(ROOTSYS)/bin
ROOT_ETCDIR = $(ROOTSYS)/etc/vmc

endif

include $(ROOT_ETCDIR)/Makefile.$(PLATFORM)

• END of CUT HERE ---

This part show us how ROOT_*DIR are prepared.

Lets look also to ./configure script for root:

• CUT HERE ---

./configure --help
`configure' configures ROOT 5.18/00d to adapt to many kind of systems.

Usage: ./configure [architecture] [flag=value]

The architecture to build for will be guessed from the output of 'uname'. If, however, that fails, or you don't want the 'native' compiler on the host platform, you can specify the architecture to use by passing as the FIRST argument one of the architecures given at the end of this message.

     FLAG            DESCRIPTION               DEFAULT


     --aclocaldir    Autoconf macro install dir(<prefix>/share/aclocal)

     --bindir        Binary installation dir   (<prefix>/bin)

     --build         Build configuration [debug, exceptions, ...],

                     overrides the ROOTBUILD shell variable


     --cintincdir    CINT interpeted headers   (<libdir>/cint)

     --datadir       Data installation dir     (<prefix>/share/root)

     --docdir        Documentation             (<prefix>/share/doc/root)

     --elispdir      Where to put Emacs Lisp

(<prefix>/share/emacs/site-lisp)


     --etcdir        Config installation dir   (/etc/root)

     --fontdir       Font installation dir     (<datadir>/fonts)

     --iconpath      Icon installation dir     (<datadir>/icons)

     --incdir        Header installation dir   (<prefix>/include/root)

     --libdir        Library installation dir  (<prefix>/lib/root)

     --macrodir      Macro installation dir    (<datadir>/macros)

     --mandir        Manpages installation dir (<prefix>/share/man/man1)

     --no-create     Do not create output files, dry run

     --prefix        Installation prefix       (/usr/local)

     --srcdir        Sources installation dir  (<datadir>/src)

     --testdir       Tests                     (<docdir>/test)

     --tutdir        Tutorials                 (<docdir>/tutorial)

If any of the flags --cintincdir, --datadir, --docdir, --etcdir, --iconpath --incdir, --libdir, --macrodir, --mandir, or --prefix is given, ROOT will be compiled with static directory names, and you should not set the ROOTSYS environment variable.

• END of CUT HERE ---

This part: --etcdir Config installation dir (/etc/root) shows that default --etcdir is without prefix and variable --prefix will have
affect to all variables excluding etcdir.

But your Makefile for Geant4, for case where $ROOTSYS is not set, include this prefix:
ROOT_ETCDIR = $(shell root-config --prefix)/etc/vmc Whatmore, even if --prefix=/ for ROOT, then this path is wrong: /etc/vmc instead of /etc/root/vmc

This is a little bit confusing for me, and i see two solutions for this: 1. Small patch for Makefile:
--- CUT HERE ---
--- Makefile.old 2008-07-24 00:22:00.000000000 +0200 +++ Makefile 2008-07-24 00:22:19.000000000 +0200 @@ -27,7 +27,7 @@

   ifeq ($(ROOTSYS),)
   ROOT_INCDIR = $(shell root-config --incdir)    ROOT_BINDIR = $(shell root-config --prefix)/bin -ROOT_ETCDIR = $(shell root-config --prefix)/etc/vmc +ROOT_ETCDIR = /etc/root/vmc

   else
   ROOT_INCDIR = $(ROOTSYS)/include
   ROOT_BINDIR = $(ROOTSYS)/bin
--- END of CUT HERE ---
But it is not good solutions still. What if I use --etcdir variable for ROOT? 2. Ask guys from ROOT to add options --etcdir for root-config to get this value. Maybe I should forward this e-mail to them? I have prepeared patches for root-config which include this features.

Best regards,

Rafal Lalik

PS. https://savannah.cern.ch/bugs/?39259 Lets look what ROOT developers say about this.

-- 
Rafal Lalik
GSI Darmstadt
E-mail: R.Lalik_at_gsi.de
Phone: +49-6159-71 1321
Skype: r.lalik
Department: Detektorlabor
Location: C12 1.003


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Received on Sun Jul 27 2008 - 16:42:02 CEST