configure

#!/bin/sh

#This is the nuSQuIDS configuration file adapted for use with CUDAnuSQuIDS

check_pkgconfig(){
	if [ "$CHECKED_PKGCONFIG" ]; then return; fi
	echo "Looking for pkg-config..."
	which pkg-config 2>&1 > /dev/null
	if [ "$?" -ne 0 ]; then
		echo "Error: pkg-config not found; you will need to specify library locations manually" 1>&2
		exit 1
	fi
	CHECKED_PKGCONFIG=1
}

find_package(){
	PKG=$1
	VAR_PREFIX=`echo $PKG | tr [:lower:] [:upper:]`
	TMP_FOUND=`eval echo "$"${VAR_PREFIX}_FOUND`
	if [ "$TMP_FOUND" ]; then return; fi
	check_pkgconfig
	echo "Looking for $PKG..."

	pkg-config --exists $PKG
	if [ "$?" -ne 0 ]; then
		echo " $PKG not found with pkg-config"
		return
	fi
	if [ $# -ge 2 ]; then
		MIN_VERSION=$2
		pkg-config --atleast-version $MIN_VERSION $PKG
		if [ "$?" -ne 0 ]; then
			echo "Error: installed $PKG version ("`pkg-config --modversion $PKG`") is too old; version >=$MIN_VERSION is required" 1>&2
			exit 1
		fi
	fi
	echo " Found $PKG version `pkg-config --modversion $PKG`"
	eval ${VAR_PREFIX}_FOUND=1
	eval ${VAR_PREFIX}_VERSION=\"`pkg-config --modversion $PKG`\"
	eval ${VAR_PREFIX}_CFLAGS=\"`pkg-config --cflags $PKG`\"
	eval ${VAR_PREFIX}_LDFLAGS=\"`pkg-config --libs $PKG`\"
	eval ${VAR_PREFIX}_INCDIR=\"`pkg-config --variable=includedir $PKG`\"
	eval ${VAR_PREFIX}_LIBDIR=\"`pkg-config --variable=libdir $PKG`\"
}

find_hdf5(){
	PKG=hdf5
	echo "Looking for $PKG..."
	VAR_PREFIX=`echo $PKG | tr [:lower:] [:upper:]`
	TMP_FOUND=`eval echo "$"${VAR_PREFIX}_FOUND`
	if [ "$TMP_FOUND" ]; then return; fi

	which h5cc 2>&1 > /dev/null
	if [ "$?" -ne 0 ]; then return; fi

	which h5ls 2>&1 > /dev/null
	if [ "$?" -eq 0 ]; then
		HDF5_VERSION=`h5ls --version | sed 's/.* \([0-9.]*\)/\1/'`
		echo " Found $PKG version $HDF5_VERSION via executables in \$PATH"
		if [ $# -ge 1 ]; then
			MIN_VERSION=$1
			#TODO: actually check version
		fi
	else
		echo " h5ls not found; cannot check $PKG version"
		echo " Proceeding with unknown version and hoping for the best"
	fi
	HDF5_COMPILE_COMMAND=`h5cc -show`
	for item in $HDF5_COMPILE_COMMAND; do
		item=`echo "$item" | sed 's| |\n|g' | sed -n 's/.*-L\([^ ]*\).*/\1/p'`
		if [ -n "$item" ]; then
			POSSIBLE_HDF5_LIBDIRS="$POSSIBLE_HDF5_LIBDIRS
				$item"
		fi
	done
	for HDF5_LIBDIR in $POSSIBLE_HDF5_LIBDIRS; do
		if [ -d $HDF5_LIBDIR -a \( -e $HDF5_LIBDIR/libhdf5.a -o -e $HDF5_LIBDIR/libhdf5.so \) ]; then
			break
		fi
	done
	if [ ! -d $HDF5_LIBDIR -o ! \( -e $HDF5_LIBDIR/libhdf5.a -o -e $HDF5_LIBDIR/libhdf5.so \) ]; then
		echo " Unable to guess $PKG library directory"
		return
	fi
	POSSIBLE_HDF5_INCDIRS=`echo "$HDF5_COMPILE_COMMAND" | sed 's| |\n|g' | sed -n 's/.*-I\([^ ]*\).*/\1/p'`
	POSSIBLE_HDF5_INCDIRS="$POSSIBLE_HDF5_INCDIRS ${HDF5_LIBDIR}/../include"
	for HDF5_INCDIR in $POSSIBLE_HDF5_INCDIRS; do
		if [ -d $HDF5_INCDIR -a -e $HDF5_INCDIR/H5version.h ]; then
			break
		fi
	done
	if [ ! -d $HDF5_INCDIR -o ! $HDF5_INCDIR/H5version.h ]; then
		echo " Unable to guess $PKG include directory"
		return
	fi

	HDF5_CFLAGS="-I${HDF5_INCDIR}"
	HDF5_LDFLAGS=`echo "$HDF5_COMPILE_COMMAND" | \
	sed 's/ /\\
	/g' | \
	sed -n -E \
	-e '/^[[:space:]]*-l/p' \
	-e '/^[[:space:]]*-L/p' \
	-e '/^[[:space:]]*-Wl,/p' \
	-e 's/^[[:space:]]*.*lib([^.]*)\.a/-l\1/p' \
	-e 's/^[[:space:]]*.*lib([^.]*)\.so/-l\1/p' \
	-e 's/^[[:space:]]*.*lib([^.]*)\.dylib/-l\1/p' `
	HDF5_LDFLAGS=`echo $HDF5_LDFLAGS` # collapse to single line

	HDF5_FOUND=1
}

ensure_found(){
	PKG=$1
	VAR_PREFIX=`echo $PKG | tr [:lower:] [:upper:]`
	TMP_FOUND=`eval echo "$"${VAR_PREFIX}_FOUND`
	if [ "$TMP_FOUND" ]; then return; fi
	#not found
	echo "Error: $PKG not installed or not registered with pkg-config" 1>&2
	lowername=`echo $PKG | tr [A-Z] [a-z]`
	echo "Please specify location using the --with-"$lowername" flag" 1>&2
	exit 1
}

PREFIX=/usr/local

HELP="Usage: ./configure [OPTION]...
Installation directories:
  --prefix=PREFIX         install files in PREFIX
                          [$PREFIX]
By default, \`make install' will install all the files in
\`$PREFIX/bin', \`$PREFIX/lib' etc.  You can specify
an installation prefix other than \`$PREFIX' using \`--prefix',
for instance \`--prefix=\$HOME'.
The following options can be used to manually specify the
locations of dependencies:
  --with-gsl=DIR           use the copy of GSL in DIR
                           assuming headers are in DIR/include
                           and libraries in DIR/lib
  --with-gsl-incdir=DIR    use the copy of GSL in DIR
  --with-gsl-libdir=DIR    use the copy of GSL in DIR
  --with-hdf5=DIR          use the copy of HDF5 in DIR
                           assuming headers are in DIR/include
                           and libraries in DIR/lib
  --with-hdf5-incdir=DIR   use the copy of HDF5 in DIR
  --with-hdf5-libdir=DIR   use the copy of HDF5 in DIR
  --with-squids=DIR        use the copy of SQuIDS in DIR
                           assuming headers are in DIR/include
                           and libraries in DIR/lib
  --with-squids-incdir=DIR        use the copy of SQuIDS in DIR
  --with-squids-libdir=DIR        use the copy of SQuIDS in DIR

  --with-nusquids=DIR        use the copy of nuSQuIDS in DIR
                           assuming headers are in DIR/include
                           and libraries in DIR/lib
  --with-nusquids-incdir=DIR        use the copy of nuSQuIDS in DIR
  --with-nusquids-libdir=DIR        use the copy of nuSQuIDS in DIR
"

for var in "$@"
do
	if [ "$var" = "--help" -o "$var" = "-h" ]; then
		echo "$HELP"
		exit 0
	fi

	TMP=`echo "$var" | sed -n 's/^--prefix=\(.*\)$/\1/p'`
	if [ "$TMP" ]; then PREFIX="$TMP"; continue; fi

	TMP=`echo "$var" | sed -n 's/^--with-gsl=\(.*\)$/\1/p'`
	if [ "$TMP" ]; then
		GSL_INCDIR="${TMP}/include";
		GSL_LIBDIR="${TMP}/lib";
	continue; fi

	TMP=`echo "$var" | sed -n 's/^--with-gsl-incdir=\(.*\)$/\1/p'`
	if [ "$TMP" ]; then GSL_INCDIR="$TMP"; continue; fi

	TMP=`echo "$var" | sed -n 's/^--with-gsl-libdir=\(.*\)$/\1/p'`
	if [ "$TMP" ]; then GSL_LIBDIR="$TMP"; continue; fi

	TMP=`echo "$var" | sed -n 's/^--with-hdf5=\(.*\)$/\1/p'`
	if [ "$TMP" ]; then
		HDF5_INCDIR="${TMP}/include";
		HDF5_LIBDIR="${TMP}/lib";
	continue; fi

	TMP=`echo "$var" | sed -n 's/^--with-hdf5-incdir=\(.*\)$/\1/p'`
	if [ "$TMP" ]; then HDF5_INCDIR="$TMP"; continue; fi

	TMP=`echo "$var" | sed -n 's/^--with-hdf5-libdir=\(.*\)$/\1/p'`
	if [ "$TMP" ]; then HDF5_LIBDIR="$TMP"; continue; fi

	TMP=`echo "$var" | sed -n 's/^--with-squids=\(.*\)$/\1/p'`
	if [ "$TMP" ]; then
		SQUIDS_INCDIR="${TMP}/include";
		SQUIDS_LIBDIR="${TMP}/lib";
	continue; fi

	TMP=`echo "$var" | sed -n 's/^--with-squids-incdir=\(.*\)$/\1/p'`
	if [ "$TMP" ]; then SQUIDS_INCDIR="$TMP"; continue; fi

	TMP=`echo "$var" | sed -n 's/^--with-squids-libdir=\(.*\)$/\1/p'`
	if [ "$TMP" ]; then SQUIDS_LIBDIR="$TMP"; continue; fi

    TMP=`echo "$var" | sed -n 's/^--with-nusquids=\(.*\)$/\1/p'`
	if [ "$TMP" ]; then
		NUSQUIDS_INCDIR="${TMP}/include";
		NUSQUIDS_LIBDIR="${TMP}/lib";
	continue; fi

	TMP=`echo "$var" | sed -n 's/^--with-nusquids-incdir=\(.*\)$/\1/p'`
	if [ "$TMP" ]; then NUSQUIDS_INCDIR="$TMP"; continue; fi

	TMP=`echo "$var" | sed -n 's/^--with-nusquids-libdir=\(.*\)$/\1/p'`
	if [ "$TMP" ]; then NUSQUIDS_LIBDIR="$TMP"; continue; fi

	echo "config.sh: Unknown or malformed option '$var'" 1>&2
	exit 1
done

if [ "$GSL_INCDIR" -a "$GSL_LIBDIR" ]; then
	echo "Checking manually specified GSL..."
	if [ -d "$GSL_INCDIR/gsl" \
         -a -e "$GSL_INCDIR/gsl/gsl_version.h" \
         -a -d "$GSL_LIBDIR" \
         -a -e "$GSL_LIBDIR/libgsl.a" ]; then
		GSL_FOUND=1
		GSL_CFLAGS="-I$GSL_INCDIR"
		GSL_LDFLAGS="-L$GSL_LIBDIR -lgsl -lgslcblas -lm"
	else
		echo "Warning: manually specifed GSL not found; will attempt auto detection"
	fi
fi

find_package gsl 1.15

if [ "$HDF5_INCDIR" -a "$HDF5_LIBDIR" ]; then
	echo "Checking manually specified HDF5..."
	if [ -d "$HDF5_INCDIR" \
         -a -e "$HDF5_INCDIR/H5version.h" \
         -a -d "$HDF5_LIBDIR" \
         -a -e "$HDF5_LIBDIR/libhdf5.a" \
         -a -e "$HDF5_LIBDIR/libhdf5_hl.a" ]; then
		HDF5_FOUND=1
		HDF5_CFLAGS="-I$HDF5_INCDIR"
		HDF5_LDFLAGS="-L$HDF5_LIBDIR -lhdf5 -lhdf5_hl"
	else
		echo "Warning: manually specifed HDF5 not found; will attempt auto detection"
	fi
fi

#Do not use this due to broken Ubuntu package
#find_package hdf5 1.8
find_hdf5

if [ "$SQUIDS_INCDIR" -a "$SQUIDS_LIBDIR" ]; then
	echo "Checking manually specified SQUIDS..."
	if [ -d "$SQUIDS_INCDIR" \
         -a -d "$SQUIDS_LIBDIR" \
         -a -e "$SQUIDS_LIBDIR/libSQuIDS.a" ]; then
		SQUIDS_FOUND=1
		SQUIDS_CFLAGS="-I$SQUIDS_INCDIR"
		SQUIDS_LDFLAGS="-L$SQUIDS_LIBDIR -lSQuIDS"
	else
		echo "Warning: manually specifed SQUIDS not found; will attempt auto detection"
	fi
fi

find_package squids 1.2

if [ "$NUSQUIDS_INCDIR" -a "$NUSQUIDS_LIBDIR" ]; then
	echo "Checking manually specified nuSQUIDS..."
	if [ -d "$NUSQUIDS_INCDIR" \
         -a -d "$NUSQUIDS_LIBDIR" \
         -a -e "$NUSQUIDS_LIBDIR/libnuSQuIDS.a" ]; then
		NUSQUIDS_FOUND=1
		NUSQUIDS_CFLAGS="-I$NUSQUIDS_INCDIR"
		NUSQUIDS_LDFLAGS="-L$NUSQUIDS_LIBDIR -lSQuIDS"
	else
		echo "Warning: manually specifed NUSQUIDS not found; will attempt auto detection"
	fi
fi

find_package nusquids 1.10

ensure_found gsl
ensure_found hdf5
ensure_found squids
ensure_found nusquids

if [ ! -d ./build/ ]; then
    mkdir build;
fi
if [ ! -d ./lib/ ]; then
    mkdir lib;
fi


echo "prefix=$PREFIX" > lib/cudanusquids.pc
echo '
libdir=${prefix}/lib
includedir=${prefix}/inc
Name: CUDAnuSQuIDS
Description: A CUDA implementation of nuSQuIDS for atmospheric neutrinos.
URL: https://github.com/fkallen/CUDAnuSQuIDS' >> lib/cudanusquids.pc
echo "Version: $VERSION" >> lib/cudanusquids.pc
echo 'Requires: gsl >= 1.15 hdf5 >= 1.8 squids >= 1.2.0 nusquids >= 1.10.0
Libs: -L${libdir} -lcudanusquids
Cflags: -I${includedir}
' >> lib/cudanusquids.pc


echo $PREFIX > .PREFIX
echo $NUSQUIDS_INCDIR > .NUSQUIDS_INCDIR
echo $NUSQUIDS_LIBDIR > .NUSQUIDS_LIBDIR
echo $SQUIDS_INCDIR > .SQUIDS_INCDIR
echo $SQUIDS_LIBDIR > .SQUIDS_LIBDIR
echo $HDF5_INCDIR > .HDF5_INCDIR
echo $HDF5_LIBDIR > .HDF5_LIBDIR
echo $GSL_INCDIR > .GSL_INCDIR
echo $GSL_LIBDIR > .GSL_LIBDIR

mypath=`pwd`
echo "#ifndef EXAMPLEPATH
#define EXAMPLEPATH
#include <string>
std::string EXAMPLE_DATA_PATH=\"$mypath/examples/data\";
#endif
" > examples/path.h

echo "Done."
echo "To build library, run make"