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
$CXX -fPIC -c -o conftest.o conftest.cc
ASTRA_RUN_LOGOUTPUT([$MEX -cxx -output conftest conftest.o])
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_MEX_OPTION(option, mex-suffix, action-if-supported, action-if-not-supported)
dnl Check if an option is supported by mex.
dnl We test if mex works by testing if it produces a mex file as output;
dnl this is required since 'mex' is also a commonly installed LaTeX format
AC_DEFUN([ASTRA_CHECK_MEX_OPTION],[
cat >conftest.cc <<_ACEOF
extern "C" void mexFunction() {
}
_ACEOF
$CXX -fPIC -c -o conftest.o conftest.cc
ASTRA_RUN_LOGOUTPUT([$MEX $1 -cxx -output conftest conftest.o])
AS_IF([test -f "conftest.$2"],[
  rm -f "conftest.$2"
  $3],[$4])
rm -f conftest.cc conftest.o
])


dnl ASTRA_RUN_STOREOUTPUT(command, output)
AC_DEFUN([ASTRA_RUN_STOREOUTPUT],[{
  AS_ECHO(["$as_me:${as_lineno-$LINENO}: $1"]) >&AS_MESSAGE_LOG_FD
  ( $1 ) >$2 2>&1
  ac_status=$?
  cat $2 >&AS_MESSAGE_LOG_FD
  AS_ECHO(["$as_me:${as_lineno-$LINENO}: \$? = $ac_status"]) >&AS_MESSAGE_LOG_FD
  test $ac_status = 0;
 }])

dnl ASTRA_RUN_LOGOUTPUT(command)
AC_DEFUN([ASTRA_RUN_LOGOUTPUT],[{
  AS_ECHO(["$as_me:${as_lineno-$LINENO}: $1"]) >&AS_MESSAGE_LOG_FD
  ( $1 ) >&AS_MESSAGE_LOG_FD 2>&1
  ac_status=$?
  AS_ECHO(["$as_me:${as_lineno-$LINENO}: \$? = $ac_status"]) >&AS_MESSAGE_LOG_FD
  test $ac_status = 0;
 }])


dnl ASTRA_TRY_PYTHON(code, action-if-ok, action-if-not-ok)
AC_DEFUN([ASTRA_TRY_PYTHON],[
cat >conftest.py <<_ACEOF
$1
_ACEOF
ASTRA_RUN_LOGOUTPUT($PYTHON conftest.py)
AS_IF([test $? = 0],[$2],[
  AS_ECHO(["$as_me: failed program was:"]) >&AS_MESSAGE_LOG_FD
  sed 's/^/| /' conftest.py >&AS_MESSAGE_LOG_FD
  $3])
])


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
$1="yes"
ASTRA_RUN_STOREOUTPUT([$NVCC -c -o conftest.o conftest.cu $NVCCFLAGS $$2],conftest.nvcc.out) || {
  $1="no"
  # Check if hack for gcc 4.4 helps
  if grep -q __builtin_stdarg_start conftest.nvcc.out; then
    AS_ECHO(["$as_me:${as_lineno-$LINENO}: Trying CUDA hack for gcc 4.4"]) >&AS_MESSAGE_LOG_FD
    NVCC_OPT="-Xcompiler -D__builtin_stdarg_start=__builtin_va_start"
    ASTRA_RUN_LOGOUTPUT([$NVCC -c -o conftest.o conftest.cu $NVCCFLAGS $$2 $NVCC_OPT]) && {
      $1="yes"
      $2="$$2 $NVCC_OPT"
    }
  fi
}
if test x$$1 = xno; then
  AS_ECHO(["$as_me: failed program was:"]) >&AS_MESSAGE_LOG_FD
  sed 's/^/| /' conftest.cu >&AS_MESSAGE_LOG_FD
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=""
astra_save_IFS=$IFS
IFS=,
for arch in $1; do
  IFS=$astra_save_IFS
  NVCC_opt="-gencode=arch=compute_$arch,code=sm_$arch"
  $NVCC -c -o conftest.o conftest.cu $NVCCFLAGS $$2 $NVCC_opt >conftest.nvcc.out 2>&1 && {
    NVCC_lastarch=$arch
    NVCC_extra="$NVCC_extra $NVCC_opt"
    NVCC_list="${NVCC_list:+$NVCC_list, }$arch"
  }
done
IFS=$astra_save_IFS
if test $NVCC_lastarch != none; then
  NVCC_extra="$NVCC_extra -gencode=arch=compute_${NVCC_lastarch},code=compute_${NVCC_lastarch}"
  $3="$NVCC_list"
  $2="$$2 $NVCC_extra"
else
  $3="none"
fi
rm -f conftest.cu conftest.o conftest.nvcc.out
])