root-config is a tool that is used to configure and determine the compiler and linker flags that should be used to compile and link programs that use ROOT.
CPPFLAGS += $(shell root-config --cflags) LDLIBS += $(shell root-config --libs) LDFLAGS += $(shell root-config --ldflags) %Cint.cxx:Include.h LinkDef.h rootcint -f $@ -c $^
in your Makefile to use the built-in rules of GNU make. For GUIs, replace --libs by --glibs.
You may also find the automake(1), autoconf(1), and libtool(1) macro file /usr/share/aclocal/root.m4 useful. If that macro file isn't installed where aclocal will find it, copy the contents to your local acinclude.m4 file. In the directories you use ROOT libraries, have in your Makefile.am file:
lib_LTLIBRARIES = libFoo.la pkginclude_HEADERS = Foo.h noinst_HEADERS = FooCint.h libFoo_la_SOURCES = Foo.cxx FooCint.cxx libFoo_la_LDFLAGS = -version-info 1:0 -R @ROOTLIBDIR@ libFoo_la_LDADD = -lCore -lCint @ROOTAUXLIBS@ BUILT_SOURCES = FooCint.cxx FooCint.h AM_CPPFLAGS = -I@ROOTINCDIR@ AM_LDFLAGS = -L@ROOTLIBDIR@ CLEANFILES = *Cint.cxx *Cint.h *~ core %Cint.cxx %Cint.h:Include.h LinkDef.h @ROOTCINT@ -f $*Cint.cxx -c $(INCLUDES) $(AM_CPPFLAGS) $^
where you should substitute Foo with whatever, and list the appropriate source files in the _SOURCES variable. In you configure.in file, put:
AC_PROG_CC AC_PROG_CXX ROOT_PATH AM_PROG_LIBTOOL
along with any other macros you may need.
Note that the ROOT_PATH macro takes three optional arguments: the minimal ROOT version to use, action if ROOT is found, and action if ROOT isn't found. Some examples are
ROOT_PATH(3.03/05, , AC_MSG_ERROR(Your ROOT version is too old)) ROOT_PATH(, AC_DEFUN(HAVE_ROOT))
For example, if you want to compile some part of your source tree conditionally on wether ROOT is present or not, you can put in your configure.in file
ROOT_PATH(, [ AC_DEFUN(HAVE_ROOT) have_root=yes ]) AM_CONDITIONAL(GOT_ROOT, test "x$have_root" = "xyes")
And then in some Makefile.am
EXTRA_SOURCES = root_dependent_source.cc if GOT_ROOT LIBFOOXTRA = root_dependent_source.cc else LIBFOOXTRA = endif lib_LTLIBRARIES = libFoo.la libFoo_la_SOURCES = Foo.cc $(LIBFOOXTRA)
The full list of substitution variables are:
full path to root-config
full path to root
full path to rootcint
Where the ROOT libraries are
Where the ROOT headers are
Extra compiler flags
ROOT basic libraries
ROOT basic + GUI libraries
Auxiliary libraries and linker flags for ROOT
Auxiliary compiler flags
Same as ROOTLIBDIR
Give a short list of options available, and exit
Report the version number of installed ROOT, and exit.
If no arguments are given, reports where ROOT is installed. With an argument of =<prefix>, set the base of the subsequent options to <prefix>. If \--exec-prefix is passed with an argument, it overrides the argument given to \--prefix for the library path.
If no argument is given, report where the libraries are installed. If an argument is given, use that as the installation base directory for the libraries. This option does not affect the include path.
Print the directory where the ROOT libraries are installed.
Print the directory where the ROOT headers are installed.
Output a line suitable for linking a program against the ROOT libraries. No graphics libraries are included.
As above, but also output for the graphics (GUI) libraries.
As above, but also output for the graphics libraries and Eve libraries.
Output a line suitable for compiling a source file against the ROOT header (class declararion) files.
Put the libNew.so library in the library lists. This option must be given before options --libs and --glibs.
Compatiblity option, does nothing.
Print auxiliary libraries and/or system linker flags.
Do not print auxiliary libraries and/or system linker flags in the output of --libs and --glibs. --auxcflags Print auxiliary compiler flags.
Do not print auxiliary compiler flags in the output of --cflags.
Do not print library path link option in output of --libs, --evelibs and --glibs.
Print additional linker flags (eg. -m64)
Print the architecture (compiler/OS)
Print the platform (OS)
Print the binary directory of the root installation (location of the root executable)
Print the configuration directory (place of system.rootrc, mime type, valgrind suppression files and .desktop files)
Print arguments used for ./configure as used when building root. These cannot be used for ./configure if root was built with CMake.
Print the ROOT git revision number from which root was built.
Test if <feature> has been enabled in the build process.
Print list of all supported features
Print number of available (hyperthreaded) cores
Print the Python version used by ROOT
Print alternative C compiler specified when ROOT was built
Print alternative C++ compiler specified when ROOT was built
Print alternative Fortran compiler specified when ROOT was built
Print alternative Linker specified when ROOT was built
See also the ROOT webpages: http://root.cern.ch
The ROOT team (see web page above):
Rene Brun and Fons Rademakers
This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
This manual page was written by Christian Holm Christensen <firstname.lastname@example.org>, for the Debian GNU/Linux system (but may be used by others).