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


AC_PREREQ(2.59)
AC_INIT(FULL-PACKAGE-NAME, VERSION, BUG-REPORT-ADDRESS)
AC_CANONICAL_SYSTEM
AC_CONFIG_SRCDIR([src/main.cpp])
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AM_INIT_AUTOMAKE([subdir-objects])
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AC_CONFIG_HEADER([src/config/config.h])
m4_ifdef([ACX_PTHREAD],,[m4_include([m4/acx_pthread.m4])])
m4_ifdef([ACX_MPI],,[m4_include([m4/acx_mpi.m4])])
m4_ifdef([AX_OPENMP],,[m4_include([m4/ax_openmp.m4])])
m4_ifdef([AX_CUDA],,[m4_include([m4/ax_cuda.m4])])
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m4_ifdef([AX_BOOST_BASE],,[m4_include([m4/ax_boost_base.m4])])
m4_ifdef([AX_BOOST_IOSTREAMS],,[m4_include([m4/ax_boost_iostreams.m4])])
m4_ifdef([AX_BOOST_PROGRAM_OPTIONS],,[m4_include([m4/ax_boost_program_options.m4])])
m4_ifdef([AX_BOOST_UNIT_TEST_FRAMEWORK],,[m4_include([m4/ax_boost_unit_test_framework.m4])])
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m4_ifdef([AX_LIB_HDF5],,[m4_include([m4/ax_lib_hdf5.m4])])
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case $host_os in
   *cygwin*)
        # Do something specific for cygwin
        CXXFLAGS+=" --std=gnu++11 "
        ;;
    *)
        #Default Case
        CXXFLAGS+=" --std=c++11 "
        ;;
esac

CXXFLAGS+=" -march=native -mtune=native -Wno-unused-local-typedefs -Wextra -Wno-unused-parameter "
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NVCCFLAGS=" "
INCLUDES_PATH=" "

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# set default prefix
if test "$prefix" = "NONE"; then
   prefix="/usr/local"
fi

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# Add openfpm_io to prefix forlder (if prefix end if openfpm_pdata remove that path)
if [ echo "$prefix" | grep -qE "/openfpm_pdata$" ]; then
  prefix=$(echo "$prefix" | sed 's/\(.*\)\/openfpm_pdata$/\1/g')
fi
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prefix="$prefix/openfpm_io"
echo "Installation dir is: $prefix"

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# Checks for programs.
AC_PROG_CXX

# Checks g++ flags

AC_CANONICAL_HOST

###### Check for debug compilation

AC_MSG_CHECKING(whether to build with debug information)
debuger=no
AC_ARG_ENABLE(debug,
	AC_HELP_STRING(
	    [--enable-debug],
	    [enable debug data generation (def=no)]
	),
  	debuger="$enableval"
)



AC_MSG_RESULT($debuger)
if test x"$debuger" = x"yes"; then
	AC_DEFINE([DEBUG_MODE],[],[Debug])
	AC_DEFINE([DEBUG],[],[Debug])
	CXXFLAGS="$CXXFLAGS -g3  -Wall -O0 "
	NVCCFLAGS+="$NVCCFLAGS -g -O0 "
else
	CXXFLAGS="$CXXFLAGS -Wall -O3 -g3 -funroll-loops "
	NVCCFLAGS+="$NVCCFLAGS -O3 "
fi

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###### Checking for compiler flags -fext-numeric-literals

AC_LANG_PUSH([C++])

my_save_cflags="$CXXFLAGS"
CXXFLAGS=-fext-numeric-literals
AC_MSG_CHECKING([whether CXX supports -fext-numeric-literals])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([])],
    [AC_MSG_RESULT([yes])
     AM_CXXFLAGS="-fext-numeric-literals"
    ],
    [
     AC_MSG_RESULT([no])
    ]
)
AC_LANG_POP([C++])
CXXFLAGS="$my_save_cflags"
AC_SUBST([AM_CXXFLAGS])


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####### Set location of openfpm_pdata

AC_ARG_WITH([pdata],
             AS_HELP_STRING([--with-pdata=directory],
             [specify where is located the pdata project]),
             [pdata_dir="$withval"],
             [pdata_dir="../../openfpm_pdata/src"])

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####### HDF5 

AX_LIB_HDF5([parallel])

if test x"$with_hdf5" = x"no"; then
    echo "Cannot detect hdf5, use the --with-hdf5 option if it is not installed in the default location"
    exit 207
fi


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####### include openfpm_devices include path
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INCLUDES_PATH+="-I. -Iconfig -I../../openfpm_data/src -I../../openfpm_devices/src -I../../openfpm_vcluster/src -I$pdata_dir "
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########
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## Enable scan coverty
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AC_MSG_CHECKING(whether to build for scan coverty compilation)
AC_ARG_ENABLE(scan-coverty,
        AC_HELP_STRING(
            [--enable-scan-coverty],
            [enable scan-coverty compilation (def=no)]
        ),
        scancoverty="$enableval"
)
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AC_MSG_RESULT($scancoverty)
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if test x"$scancoverty" = x"yes"; then
        AC_DEFINE([COVERTY_SCAN],[],[Compile for coverty scan])
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fi

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AC_DEFINE([ON_IO_UNIT_TESTS],[],[IO unit tests])

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##### CHECK FOR BOOST ##############

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AX_BOOST_BASE([1.52],[],[echo "boost not found"
                    exit 202])
AX_BOOST_UNIT_TEST_FRAMEWORK
AX_BOOST_PROGRAM_OPTIONS
AX_BOOST_IOSTREAMS

if test x"$ax_cv_boost_unit_test_framework" = x"no"; then
  echo "Notify boost not usable"
  exit 202
fi

if test x"$ax_cv_boost_iostreams" = x"no"; then
  echo "Notify boost not usable"
  exit 202
fi

if test x"$ax_cv_boost_programs_options" = x"no"; then
  echo "Notify boost not usable"
  exit 202
fi

### Unfortunately a lot of linux distros install a pretty old MPI in the system wide folder,
### override such MPI with the installed one is extremely difficult and tricky, because we want
### to include "some" system library but exclude mpi. One possibility is to give specifically
### the wanted libmpi.so directly to the linker. But this is not possible because this lib is
### given by mpic++ in the form -L/path/to/mpi -lmpi, the other is completely eliminate every
### -L with a system default library
###

# eliminate any /usr/lib and and /usr/include from $BOOST_LIB and $BOOST_INCLUDE

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BOOST_LDFLAGS=$(echo "$BOOST_LDFLAGS" | sed -e 's/ -L\/usr\/lib64[ \b]//g' | sed -e 's/ -L\/usr\/lib[ \b]//g')
BOOST_CPPFLAGS=$(echo "$BOOST_CPPFLAGS" | sed -e 's/-I\/usr\/include[ \b]//g')
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AC_SUBST(BOOST_LDFLAGS)
AC_SUBST(BOOST_CPPFLAGS)

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####### Checking for GPU support

AX_CUDA

if test x"$NVCC_EXIST" = x"yes"; then
  AC_MSG_CHECKING(whether to build with GPU support)
  gpu_support=yes
  AC_ARG_ENABLE(gpu,
        AC_HELP_STRING(
            [--enable-gpu],
            [enable gpu support]
        ),
        gpu_support="$enableval"
  )

  AC_MSG_RESULT($gpu_support)
  if test x"$gpu_support" = x"yes"; then
        AC_DEFINE([CUDA_GPU],[],[CUDA GPU support])
  fi
else
  gpu_support=no
fi


# Set this conditional if cuda is wanted

#

AM_CONDITIONAL(BUILDCUDA, test x$gpu_support = x"yes")

##########################

AC_SUBST(NVCCFLAGS)
AC_SUBST(INCLUDES_PATH)

# Checks for typedefs, structures, and compiler characteristics.

# Checks for library functions.

AC_CONFIG_FILES([Makefile src/Makefile])
AC_OUTPUT
echo ""
echo   "***********************************"
echo   "*                                 *"
if [ test x"$profiler" = x"yes" ]; then
  echo "*    profiler: yes                *"
else
  echo "*    profiler: no                 *"
fi
if [ test x"$memcheck" = x"yes" ]; then
  echo "*    memcheck: yes                *"
else
  echo "*    memcheck: no                 *"
fi
if [ test x"$debuger" = x"yes" ]; then
  echo "*    debug: yes                   *"
else
  echo "*    debug: no                    *"
fi
if [ test x"$gpu_support" = x"no" ]; then
  echo "*    gpu: no                      *"
else
  echo "*    gpu: yes                     *"
fi
echo   "*                                 *"
echo   "***********************************"