AC_DEFUN([ASTRA_CHECK_BOOST_THREAD],[
BOOST_BACKUP_LIBS="$LIBS"
LIBS="$LIBS $1"
AC_LINK_IFELSE([AC_LANG_SOURCE([
#include <boost/thread.hpp>
int main()
{
  boost::thread t;
  boost::posix_time::milliseconds m(1);
  t.timed_join(m);
  return 0;
}
])],[$2],[$3])
LIBS="$BOOST_BACKUP_LIBS"
unset BOOST_BACKUP_LIBS
])

AC_DEFUN([ASTRA_CHECK_BOOST_UNIT_TEST_FRAMEWORK],[
BOOST_BACKUP_LIBS="$LIBS"
LIBS="$LIBS $1"
AC_LINK_IFELSE([AC_LANG_SOURCE([
#define BOOST_TEST_DYN_LINK

#define BOOST_AUTO_TEST_MAIN

#include <boost/test/unit_test.hpp>
#include <boost/test/auto_unit_test.hpp>
#include <boost/test/floating_point_comparison.hpp>
])],[$2],[$3])
LIBS="$BOOST_BACKUP_LIBS"
unset BOOST_BACKUP_LIBS
])

dnl ASTRA_CHECK_MEX_SUFFIX(list-of-suffices, variable-to-set)
AC_DEFUN([ASTRA_CHECK_MEX_SUFFIX],[
cat >conftest.cc <<_ACEOF
extern "C" void mexFunction() {
}
_ACEOF
$CXX -fPIC -c -o conftest.o conftest.cc
$MEX -cxx -output conftest conftest.o
$2=""
for suffix in $1; do
  if test -f "conftest.$suffix"; then
    $2="$suffix"
    rm -f "conftest.$suffix"
  fi
done
rm -f conftest.cc conftest.o
])

dnl ASTRA_CHECK_NVCC(variable-to-set,cppflags-to-set)
AC_DEFUN([ASTRA_CHECK_NVCC],[
cat >conftest.cu <<_ACEOF
#include <iostream>
int main() {
  std::cout << "Test" << std::endl;
  return 0;
}
_ACEOF
$1="yes"
$NVCC -c -o conftest.o conftest.cu $$2 >conftest.nvcc.out 2>&1 || {
  $1="no"
  # Check if hack for gcc 4.4 helps
  if grep -q __builtin_stdarg_start conftest.nvcc.out; then
    NVCC_OPT="-Xcompiler -D__builtin_stdarg_start=__builtin_va_start"
    $NVCC -c -o conftest.o conftest.cu $$2 $NVCC_OPT >/dev/null 2>&1 && {
      $1="yes"
      $2="$$2 $NVCC_OPT"
    }
  fi
}
rm -f conftest.cu conftest.o conftest.nvcc.out
])

dnl ASTRA_FIND_NVCC_ARCHS(archs-to-try,cppflags-to-extend,output-list)
dnl Architectures should be of the form 10, 20, 30, 35,
dnl and should be in order. The last accepted one will be used for PTX output.
dnl All accepted ones will be used for cubin output.
AC_DEFUN([ASTRA_FIND_NVCC_ARCHS],[
cat >conftest.cu <<_ACEOF
#include <iostream>
int main() {
  std::cout << "Test" << std::endl;
  return 0;
}
_ACEOF
NVCC_lastarch="none"
NVCC_extra=""
NVCC_list=""
for arch in $1; do
  NVCC_opt="-gencode=arch=compute_$arch,code=sm_$arch"
  $NVCC -c -o conftest.o conftest.cu $$2 $NVCC_opt >conftest.nvcc.out 2>&1 && {
    NVCC_lastarch=$arch
    NVCC_extra="$NVCC_extra $NVCC_opt"
    NVCC_list="${NVCC_list:+$NVCC_list, }$arch"
  }
done
if test $NVCC_lastarch != none; then
  NVCC_extra="$NVCC_extra -gencode=arch=compute_${NVCC_lastarch},code=compute_${NVCC_lastarch}"
  $3="$NVCC_list"
  $2="$$2 $NVCC_extra"
else
  $3="none"
fi
rm -f conftest.cu conftest.o conftest.nvcc.out
])