configure.ac

#                     -*- Autoconf -*-
# Process this file with autoconf to produce a configure script.

AC_INIT([Camgen], [1.0], [Gijs van den Oord <G.vandenOord@gmail.com>])
AC_CONFIG_SRCDIR([src/unused.cpp])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_AUX_DIR([build-aux])
AC_CONFIG_MACRO_DIR([m4])

# Checks for programs.

OLD_CXXFLAGS=$CXXFLAGS

m4_pattern_allow([AM_PROG_AR])
AM_PROG_AR
AC_PROG_CXXCPP
AC_PROG_CXX
AC_PROG_INSTALL
AC_PROG_LIBTOOL

CXXFLAGS=$OLD_CXXFLAGS

# Automake prequisites

AM_INIT_AUTOMAKE([1.9 -Wall])

# use the C++ compiler for the following checks

AC_LANG([C++])

# Checks for standard header files

AC_HEADER_STDC
AC_CHECK_HEADER([string])
AC_CHECK_HEADER([iostream])
AC_CHECK_HEADER([fstream])
AC_CHECK_HEADER([sstream])
AC_CHECK_HEADER([bitset])
AC_CHECK_HEADER([list])
AC_CHECK_HEADER([map])
AC_CHECK_HEADER([set])
AC_CHECK_HEADER([vector])
AC_CHECK_HEADER([algorithm])

# Checks for typedefs, structures, and compiler characteristics.

AC_C_INLINE
AC_TYPE_SIZE_T
AC_CHECK_TYPES([ptrdiff_t])

# Checks for standard library functions.

AC_FUNC_ERROR_AT_LINE
AC_CHECK_FUNCS([floor pow sqrt])

# Debug support (taken from http://www.bioinf.uni-freiburg.de/~mmann/HowTo/automake.html)

AC_MSG_CHECKING([whether to build with debug information])
AC_ARG_ENABLE([debug],
    [AS_HELP_STRING([--enable-debug],
        [enable debug data generation (default=no)])],
    [withdbg="$enableval"],
    [withdbg=no])
AC_MSG_RESULT([$withdbg])

if test "x$withdbg" = "xyes"; then
    AC_DEFINE([DEBUG],[],[Debug Mode])
    AM_CXXFLAGS="$AM_CXXFLAGS -g -Wall -Werror -Wno-uninitialized -O0"
else
    AC_DEFINE([NDEBUG],[],[No-debug Mode])
    AM_CXXFLAGS="$AM_CXXFLAGS -O3"
fi

# Check for gnuplot

AC_DEFUN([CAMGEN_CHECK_GNUPLOT],[
WITHGNUPLOT="yes"
GNUPLOTPATH="/usr/local/bin/gnuplot"
AC_ARG_WITH([gnuplot],
	    AC_HELP_STRING([--with-gnuplot=path-to-gnuplot],[location of gnuplot
			    program (/usr/local/bin/gnuplot by default)]),
	    [if test "x$with_gnuplot" = "xno"; then
	     WITHGNUPLOT="no"
	     elif test "x$with_gnuplot" != "xyes"; then
	     GNUPLOTPATH="$with_gnuplot"
	     fi],[WITHGNUPLOT="no"])
AC_MSG_CHECKING([for gnuplot location])
AC_MSG_RESULT($WITHGNUPLOT)
if test "x$WITHGNUPLOT" = "xyes"; then
AC_CHECK_PROG(HAVE_GNUPLOT,gnuplot,"$GNUPLOTPATH","yes","no")
if test "x$HAVE_GNUPLOT" = "xyes"; then
AC_DEFINE_UNQUOTED([GNUPLOTPATH],["$GNUPLOTPATH"],[The gnuplot binary location])
else
AC_MSG_NOTICE(gnuplot not found...configuring without.)
fi
fi
])

CAMGEN_CHECK_GNUPLOT

# Check for the LHAPDF header and library

AC_DEFUN([CAMGEN_CHECK_LHAPDF],[
WITHLHAPDF="yes"
LHAPDF_DIR="/usr/local"
AC_MSG_CHECKING([for LHAPDF])
AC_ARG_WITH([LHAPDF],
	    AC_HELP_STRING([--with-LHAPDF=DIR],[location of LHAPDF installation (/usr/local by default).]),
	    [if test "x$with_LHAPDF" = "xno"; then
	     WITHLHAPDF="no"
	     elif test "x$with_LHAPDF" != "xyes"; then
	     LHAPDF_DIR="$with_LHAPDF";
	     fi],[WITHLHAPDF="no"])
if test "x$WITHLHAPDF" = "xyes"; then
AC_CHECK_HEADER([$LHAPDF_DIR/include/LHAPDF/LHAPDF.h],[WITHLHAPDF="yes"],[WITHLHAPDF="no"])
AC_CHECK_LIB([$LHAPDF_DIR/lib/LHAPDF],initPDFSet,[WITHLHAPDF="yes"],[WITHLHAPDF="no"])
AC_CHECK_LIB([$LHAPDF_DIR/lib/LHAPDF],initPDF,[WITHLHAPDF="yes"],[WITHLHAPDF="no"])
AC_CHECK_LIB([$LHAPDF_DIR/lib/LHAPDF],getXmin,[WITHLHAPDF="yes"],[WITHLHAPDF="no"])
AC_CHECK_LIB([$LHAPDF_DIR/lib/LHAPDF],getXmax,[WITHLHAPDF="yes"],[WITHLHAPDF="no"])
AC_CHECK_LIB([$LHAPDF_DIR/lib/LHAPDF],xfx,[WITHLHAPDF="yes"],[WITHLHAPDF="no"])
fi
AC_MSG_RESULT($WITHLHAPDF)
])

CAMGEN_CHECK_LHAPDF

if test "x$WITHLHAPDF" = "xyes"; then
    AC_DEFINE([HAVE_LHAPDF_H],[1],[Linking against a valid LHAPDF installation])
    AM_CXXFLAGS="$AM_CXXFLAGS -I${LHAPDF_DIR}/include";
    AM_LDFLAGS="$AM_LDFLAGS -L${LHAPDF_DIR}/lib";
    LIBS = "-lLHAPDF $LIBS";
fi

# Check for the ROOT headers. TODO: check for library functions using custom test progs.

AC_DEFUN([CAMGEN_CHECK_ROOT],[
WITHROOT="yes"
ROOT_DIR="/usr/local"
AC_MSG_CHECKING([for ROOT])
AC_ARG_WITH([ROOT],
	    AC_HELP_STRING([--with-ROOT=DIR],[location of ROOT installation (/usr/local by default).]),
	    [if test "x$with_ROOT" = "xno"; then
	     WITHROOT="no"
	     elif test "x$with_ROOT" != "xyes"; then
	     ROOT_DIR="$with_ROOT";
	     fi],[WITHROOT="no"])
if test "x$WITHROOT" = "xyes"; then
    CPPFLAGS_CACHE="$CPPFLAGS"
    CPPFLAGS="$CPPFLAGS -I${ROOT_DIR}/include -std=c++11"
    AC_CHECK_HEADER([TFile.h],[WITHROOT="yes"],[WITHROOT="no"])
    AC_CHECK_HEADER([TTree.h],[WITHROOT="yes"],[WITHROOT="no"])
    CPPFLAGS="$CPPFLAGS_CACHE"
fi
AC_MSG_RESULT($WITHROOT)
])

CAMGEN_CHECK_ROOT

if test "x$WITHROOT" = "xyes"; then
    AC_DEFINE([HAVE_ROOT_H],[1],[Linking against a valid ROOT installation])
    AM_CXXFLAGS_ROOT="$AM_CXXFLAGS -std=c++11 -I${ROOT_DIR}/include";
    AM_LDFLAGS_ROOT="$AM_LDFLAGS -L${ROOT_DIR}/lib -Wl,-rpath,${ROOT_DIR}/lib";
    AM_LIBS_ROOT="-lCore -lTree -lNet -lRIO -lThread $LIBS";
else
    AM_CXXFLAGS_ROOT="$AM_CXXFLAGS";
    AM_LDFLAGS_ROOT="$AM_LDFLAGS";
    AM_LIBS_ROOT="$LIBS";
fi

AC_SUBST([AM_CXXFLAGS_ROOT])
AC_SUBST([AM_LDFLAGS_ROOT])
AC_SUBST([AM_LIBS_ROOT])

# Check for the Pythia headers. TODO: check for library functions using custom test progs.

AC_DEFUN([CAMGEN_CHECK_PYTHIA8],[
WITHPYTHIA8="yes"
PYTHIA8_DIR="/usr/local"
AC_MSG_CHECKING([for pythia8])
AC_ARG_WITH([pythia8],
	    AC_HELP_STRING([--with-pythia8=DIR],[location of Pythia 8 installation (/usr/local by default).]),
	    [if test "x$with_pythia8" = "xno"; then
	     WITHPYTHIA8="no"
	     elif test "x$with_pythia8" != "xyes"; then
	     PYTHIA8_DIR="$with_pythia8";
	     fi],[WITHPYTHIA8="no"])
if test "x$WITHPYTHIA8" = "xyes"; then
    CPPFLAGS_CACHE="$CPPFLAGS"
    CPPFLAGS="$CPPFLAGS -I${PYTHIA8_DIR}/include"
    AC_CHECK_HEADER([Pythia8/Pythia.h],[WITHPYTHIA8="yes"],[WITHPYTHIA8="no"])
    AC_CHECK_HEADER([Pythia8/LesHouches.h],[WITHPYTHIA8="yes"],[WITHPYTHIA8="no"])
    CPPFLAGS="$CPPFLAGS_CACHE"
fi
AC_MSG_RESULT($WITHPYTHIA8)
])

CAMGEN_CHECK_PYTHIA8

if test "x$WITHPYTHIA8" = "xyes"; then
    AC_DEFINE([HAVE_PYTHIA8_H],[1],[Linking against a valid Pythia-8 installation])
    AM_CXXFLAGS_PYTHIA8="$AM_CXXFLAGS -I${PYTHIA8_DIR}/include";
    AM_LDFLAGS_PYTHIA8="$AM_LDFLAGS -L${PYTHIA8_DIR}/lib -Wl,-rpath,${PYTHIA8_DIR}/lib";
    AM_LIBS_PYTHIA8="-lpythia8 $LIBS";
else
    AM_CXXFLAGS_PYTHIA8="$AM_CXXFLAGS";
    AM_LDFLAGS_PYTHIA8="$AM_LDFLAGS";
    AM_LIBS_PYTHIA8="$LIBS";
fi

AC_SUBST([AM_CXXFLAGS_PYTHIA8])
AC_SUBST([AM_LDFLAGS_PYTHIA8])
AC_SUBST([AM_LIBS_PYTHIA8])

AC_SUBST([AM_CXXFLAGS])
AC_SUBST([AM_LDFLAGS])
AC_SUBST([LIBS])
# Makefiles to configure.

AC_CONFIG_FILES([Makefile
                 include/Makefile
                 lib/Makefile
                 src/Makefile
                 examples/Makefile
                 test/Makefile])
AC_OUTPUT