configure

if test x$fftw_incdir = x; then
  if test x$fftw_libdir = x; then
    if test "${ac_cv_header_fftw3_h+set}" = set; then
  { $as_echo "$as_me:$LINENO: checking for fftw3.h" >&5
$as_echo_n "checking for fftw3.h... " >&6; }
if test "${ac_cv_header_fftw3_h+set}" = set; then
  $as_echo_n "(cached) " >&6
fi
{ $as_echo "$as_me:$LINENO: result: $ac_cv_header_fftw3_h" >&5
$as_echo "$ac_cv_header_fftw3_h" >&6; }
else
  # Is the header compilable?
{ $as_echo "$as_me:$LINENO: checking fftw3.h usability" >&5
$as_echo_n "checking fftw3.h usability... " >&6; }
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
$ac_includes_default
#include <fftw3.h>
_ACEOF
rm -f conftest.$ac_objext
if { (ac_try="$ac_compile"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
$as_echo "$ac_try_echo") >&5
  (eval "$ac_compile") 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } && {
	 test -z "$ac_c_werror_flag" ||
	 test ! -s conftest.err
       } && test -s conftest.$ac_objext; then
  ac_header_compiler=yes
else
  $as_echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

	ac_header_compiler=no
fi

rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
{ $as_echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
$as_echo "$ac_header_compiler" >&6; }

# Is the header present?
{ $as_echo "$as_me:$LINENO: checking fftw3.h presence" >&5
$as_echo_n "checking fftw3.h presence... " >&6; }
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#include <fftw3.h>
_ACEOF
if { (ac_try="$ac_cpp conftest.$ac_ext"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
$as_echo "$ac_try_echo") >&5
  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } >/dev/null && {
	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
	 test ! -s conftest.err
       }; then
  ac_header_preproc=yes
else
  $as_echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

  ac_header_preproc=no
fi

rm -f conftest.err conftest.$ac_ext
{ $as_echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
$as_echo "$ac_header_preproc" >&6; }

# So?  What about this header?
case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
  yes:no: )
    { $as_echo "$as_me:$LINENO: WARNING: fftw3.h: accepted by the compiler, rejected by the preprocessor!" >&5
$as_echo "$as_me: WARNING: fftw3.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: fftw3.h: proceeding with the compiler's result" >&5
$as_echo "$as_me: WARNING: fftw3.h: proceeding with the compiler's result" >&2;}
    ac_header_preproc=yes
    ;;
  no:yes:* )
    { $as_echo "$as_me:$LINENO: WARNING: fftw3.h: present but cannot be compiled" >&5
$as_echo "$as_me: WARNING: fftw3.h: present but cannot be compiled" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: fftw3.h:     check for missing prerequisite headers?" >&5
$as_echo "$as_me: WARNING: fftw3.h:     check for missing prerequisite headers?" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: fftw3.h: see the Autoconf documentation" >&5
$as_echo "$as_me: WARNING: fftw3.h: see the Autoconf documentation" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: fftw3.h:     section \"Present But Cannot Be Compiled\"" >&5
$as_echo "$as_me: WARNING: fftw3.h:     section \"Present But Cannot Be Compiled\"" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: fftw3.h: proceeding with the preprocessor's result" >&5
$as_echo "$as_me: WARNING: fftw3.h: proceeding with the preprocessor's result" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: fftw3.h: in the future, the compiler will take precedence" >&5
$as_echo "$as_me: WARNING: fftw3.h: in the future, the compiler will take precedence" >&2;}
    ( cat <<\_ASBOX
## ---------------------------- ##
## Report this to bertin@iap.fr ##
## ---------------------------- ##
_ASBOX
     ) | sed "s/^/$as_me: WARNING:     /" >&2
    ;;
esac
{ $as_echo "$as_me:$LINENO: checking for fftw3.h" >&5
$as_echo_n "checking for fftw3.h... " >&6; }
if test "${ac_cv_header_fftw3_h+set}" = set; then
  $as_echo_n "(cached) " >&6
else
  ac_cv_header_fftw3_h=$ac_header_preproc
fi
{ $as_echo "$as_me:$LINENO: result: $ac_cv_header_fftw3_h" >&5
$as_echo "$ac_cv_header_fftw3_h" >&6; }

fi
if test "x$ac_cv_header_fftw3_h" = x""yes; then
  acx_fftw_ok=yes
fi


    if test x$acx_fftw_ok = xyes; then

cat >>confdefs.h <<\_ACEOF
#define FFTW_H "fftw3.h"
_ACEOF

    else
      if test "${ac_cv_header_fftw_fftw3_h+set}" = set; then
  { $as_echo "$as_me:$LINENO: checking for fftw/fftw3.h" >&5
$as_echo_n "checking for fftw/fftw3.h... " >&6; }
if test "${ac_cv_header_fftw_fftw3_h+set}" = set; then
  $as_echo_n "(cached) " >&6
fi
{ $as_echo "$as_me:$LINENO: result: $ac_cv_header_fftw_fftw3_h" >&5
$as_echo "$ac_cv_header_fftw_fftw3_h" >&6; }
else
  # Is the header compilable?
{ $as_echo "$as_me:$LINENO: checking fftw/fftw3.h usability" >&5
$as_echo_n "checking fftw/fftw3.h usability... " >&6; }
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
$ac_includes_default
#include <fftw/fftw3.h>
_ACEOF
rm -f conftest.$ac_objext
if { (ac_try="$ac_compile"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
$as_echo "$ac_try_echo") >&5
  (eval "$ac_compile") 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } && {
	 test -z "$ac_c_werror_flag" ||
	 test ! -s conftest.err
       } && test -s conftest.$ac_objext; then
  ac_header_compiler=yes
else
  $as_echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

	ac_header_compiler=no
fi

rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
{ $as_echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
$as_echo "$ac_header_compiler" >&6; }

# Is the header present?
{ $as_echo "$as_me:$LINENO: checking fftw/fftw3.h presence" >&5
$as_echo_n "checking fftw/fftw3.h presence... " >&6; }
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#include <fftw/fftw3.h>
_ACEOF
if { (ac_try="$ac_cpp conftest.$ac_ext"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
$as_echo "$ac_try_echo") >&5
  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } >/dev/null && {
	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
	 test ! -s conftest.err
       }; then
  ac_header_preproc=yes
else
  $as_echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

  ac_header_preproc=no
fi

rm -f conftest.err conftest.$ac_ext
{ $as_echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
$as_echo "$ac_header_preproc" >&6; }

# So?  What about this header?
case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
  yes:no: )
    { $as_echo "$as_me:$LINENO: WARNING: fftw/fftw3.h: accepted by the compiler, rejected by the preprocessor!" >&5
$as_echo "$as_me: WARNING: fftw/fftw3.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: fftw/fftw3.h: proceeding with the compiler's result" >&5
$as_echo "$as_me: WARNING: fftw/fftw3.h: proceeding with the compiler's result" >&2;}
    ac_header_preproc=yes
    ;;
  no:yes:* )
    { $as_echo "$as_me:$LINENO: WARNING: fftw/fftw3.h: present but cannot be compiled" >&5
$as_echo "$as_me: WARNING: fftw/fftw3.h: present but cannot be compiled" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: fftw/fftw3.h:     check for missing prerequisite headers?" >&5
$as_echo "$as_me: WARNING: fftw/fftw3.h:     check for missing prerequisite headers?" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: fftw/fftw3.h: see the Autoconf documentation" >&5
$as_echo "$as_me: WARNING: fftw/fftw3.h: see the Autoconf documentation" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: fftw/fftw3.h:     section \"Present But Cannot Be Compiled\"" >&5
$as_echo "$as_me: WARNING: fftw/fftw3.h:     section \"Present But Cannot Be Compiled\"" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: fftw/fftw3.h: proceeding with the preprocessor's result" >&5
$as_echo "$as_me: WARNING: fftw/fftw3.h: proceeding with the preprocessor's result" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: fftw/fftw3.h: in the future, the compiler will take precedence" >&5
$as_echo "$as_me: WARNING: fftw/fftw3.h: in the future, the compiler will take precedence" >&2;}
    ( cat <<\_ASBOX
## ---------------------------- ##
## Report this to bertin@iap.fr ##
## ---------------------------- ##
_ASBOX
     ) | sed "s/^/$as_me: WARNING:     /" >&2
    ;;
esac
{ $as_echo "$as_me:$LINENO: checking for fftw/fftw3.h" >&5
$as_echo_n "checking for fftw/fftw3.h... " >&6; }
if test "${ac_cv_header_fftw_fftw3_h+set}" = set; then
  $as_echo_n "(cached) " >&6
else
  ac_cv_header_fftw_fftw3_h=$ac_header_preproc
fi
{ $as_echo "$as_me:$LINENO: result: $ac_cv_header_fftw_fftw3_h" >&5
$as_echo "$ac_cv_header_fftw_fftw3_h" >&6; }

fi
if test "x$ac_cv_header_fftw_fftw3_h" = x""yes; then
  acx_fftw_ok=yes
fi


      if test x$acx_fftw_ok = xyes; then

cat >>confdefs.h <<\_ACEOF
#define FFTW_H "fftw/fftw3.h"
_ACEOF

      else
        FFTW_ERROR="FFTW include files not found in default location!"
      fi
    fi
  else
    as_ac_Header=`$as_echo "ac_cv_header_$fftw_libdir/include/fftw3.h" | $as_tr_sh`
if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
  { $as_echo "$as_me:$LINENO: checking for $fftw_libdir/include/fftw3.h" >&5
$as_echo_n "checking for $fftw_libdir/include/fftw3.h... " >&6; }
if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
  $as_echo_n "(cached) " >&6
fi
ac_res=`eval 'as_val=${'$as_ac_Header'}
		 $as_echo "$as_val"'`
	       { $as_echo "$as_me:$LINENO: result: $ac_res" >&5
$as_echo "$ac_res" >&6; }
else
  # Is the header compilable?
{ $as_echo "$as_me:$LINENO: checking $fftw_libdir/include/fftw3.h usability" >&5
$as_echo_n "checking $fftw_libdir/include/fftw3.h usability... " >&6; }
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
$ac_includes_default
#include <$fftw_libdir/include/fftw3.h>
_ACEOF
rm -f conftest.$ac_objext
if { (ac_try="$ac_compile"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
$as_echo "$ac_try_echo") >&5
  (eval "$ac_compile") 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } && {
	 test -z "$ac_c_werror_flag" ||
	 test ! -s conftest.err
       } && test -s conftest.$ac_objext; then
  ac_header_compiler=yes
else
  $as_echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

	ac_header_compiler=no
fi

rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
{ $as_echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
$as_echo "$ac_header_compiler" >&6; }

# Is the header present?
{ $as_echo "$as_me:$LINENO: checking $fftw_libdir/include/fftw3.h presence" >&5
$as_echo_n "checking $fftw_libdir/include/fftw3.h presence... " >&6; }
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#include <$fftw_libdir/include/fftw3.h>
_ACEOF
if { (ac_try="$ac_cpp conftest.$ac_ext"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
$as_echo "$ac_try_echo") >&5
  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } >/dev/null && {
	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
	 test ! -s conftest.err
       }; then
  ac_header_preproc=yes
else
  $as_echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

  ac_header_preproc=no
fi

rm -f conftest.err conftest.$ac_ext
{ $as_echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
$as_echo "$ac_header_preproc" >&6; }

# So?  What about this header?
case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
  yes:no: )
    { $as_echo "$as_me:$LINENO: WARNING: $fftw_libdir/include/fftw3.h: accepted by the compiler, rejected by the preprocessor!" >&5
$as_echo "$as_me: WARNING: $fftw_libdir/include/fftw3.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: $fftw_libdir/include/fftw3.h: proceeding with the compiler's result" >&5
$as_echo "$as_me: WARNING: $fftw_libdir/include/fftw3.h: proceeding with the compiler's result" >&2;}
    ac_header_preproc=yes
    ;;
  no:yes:* )
    { $as_echo "$as_me:$LINENO: WARNING: $fftw_libdir/include/fftw3.h: present but cannot be compiled" >&5
$as_echo "$as_me: WARNING: $fftw_libdir/include/fftw3.h: present but cannot be compiled" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: $fftw_libdir/include/fftw3.h:     check for missing prerequisite headers?" >&5
$as_echo "$as_me: WARNING: $fftw_libdir/include/fftw3.h:     check for missing prerequisite headers?" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: $fftw_libdir/include/fftw3.h: see the Autoconf documentation" >&5
$as_echo "$as_me: WARNING: $fftw_libdir/include/fftw3.h: see the Autoconf documentation" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: $fftw_libdir/include/fftw3.h:     section \"Present But Cannot Be Compiled\"" >&5
$as_echo "$as_me: WARNING: $fftw_libdir/include/fftw3.h:     section \"Present But Cannot Be Compiled\"" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: $fftw_libdir/include/fftw3.h: proceeding with the preprocessor's result" >&5
$as_echo "$as_me: WARNING: $fftw_libdir/include/fftw3.h: proceeding with the preprocessor's result" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: $fftw_libdir/include/fftw3.h: in the future, the compiler will take precedence" >&5
$as_echo "$as_me: WARNING: $fftw_libdir/include/fftw3.h: in the future, the compiler will take precedence" >&2;}
    ( cat <<\_ASBOX
## ---------------------------- ##
## Report this to bertin@iap.fr ##
## ---------------------------- ##
_ASBOX
     ) | sed "s/^/$as_me: WARNING:     /" >&2
    ;;
esac
{ $as_echo "$as_me:$LINENO: checking for $fftw_libdir/include/fftw3.h" >&5
$as_echo_n "checking for $fftw_libdir/include/fftw3.h... " >&6; }
if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
  $as_echo_n "(cached) " >&6
else
  eval "$as_ac_Header=\$ac_header_preproc"
fi
ac_res=`eval 'as_val=${'$as_ac_Header'}
		 $as_echo "$as_val"'`
	       { $as_echo "$as_me:$LINENO: result: $ac_res" >&5
$as_echo "$ac_res" >&6; }

fi
as_val=`eval 'as_val=${'$as_ac_Header'}
		 $as_echo "$as_val"'`
   if test "x$as_val" = x""yes; then
  acx_fftw_ok=yes
fi


    if test x$acx_fftw_ok = xyes; then

cat >>confdefs.h <<\_ACEOF
#define FFTW_H $fftw_libdir"/include/fftw3.h
_ACEOF

    else
      if test "${ac_cv_header_fftw3_h+set}" = set; then
  { $as_echo "$as_me:$LINENO: checking for fftw3.h" >&5
$as_echo_n "checking for fftw3.h... " >&6; }
if test "${ac_cv_header_fftw3_h+set}" = set; then
  $as_echo_n "(cached) " >&6
fi
{ $as_echo "$as_me:$LINENO: result: $ac_cv_header_fftw3_h" >&5
$as_echo "$ac_cv_header_fftw3_h" >&6; }
else
  # Is the header compilable?
{ $as_echo "$as_me:$LINENO: checking fftw3.h usability" >&5
$as_echo_n "checking fftw3.h usability... " >&6; }
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
$ac_includes_default
#include <fftw3.h>
_ACEOF
rm -f conftest.$ac_objext
if { (ac_try="$ac_compile"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
$as_echo "$ac_try_echo") >&5
  (eval "$ac_compile") 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } && {
	 test -z "$ac_c_werror_flag" ||
	 test ! -s conftest.err
       } && test -s conftest.$ac_objext; then
  ac_header_compiler=yes
else
  $as_echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

	ac_header_compiler=no
fi

rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
{ $as_echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
$as_echo "$ac_header_compiler" >&6; }

# Is the header present?
{ $as_echo "$as_me:$LINENO: checking fftw3.h presence" >&5
$as_echo_n "checking fftw3.h presence... " >&6; }
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#include <fftw3.h>
_ACEOF
if { (ac_try="$ac_cpp conftest.$ac_ext"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
$as_echo "$ac_try_echo") >&5
  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } >/dev/null && {
	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
	 test ! -s conftest.err
       }; then
  ac_header_preproc=yes
else
  $as_echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

  ac_header_preproc=no
fi

rm -f conftest.err conftest.$ac_ext
{ $as_echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
$as_echo "$ac_header_preproc" >&6; }

# So?  What about this header?
case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
  yes:no: )
    { $as_echo "$as_me:$LINENO: WARNING: fftw3.h: accepted by the compiler, rejected by the preprocessor!" >&5
$as_echo "$as_me: WARNING: fftw3.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: fftw3.h: proceeding with the compiler's result" >&5
$as_echo "$as_me: WARNING: fftw3.h: proceeding with the compiler's result" >&2;}
    ac_header_preproc=yes
    ;;
  no:yes:* )
    { $as_echo "$as_me:$LINENO: WARNING: fftw3.h: present but cannot be compiled" >&5
$as_echo "$as_me: WARNING: fftw3.h: present but cannot be compiled" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: fftw3.h:     check for missing prerequisite headers?" >&5
$as_echo "$as_me: WARNING: fftw3.h:     check for missing prerequisite headers?" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: fftw3.h: see the Autoconf documentation" >&5
$as_echo "$as_me: WARNING: fftw3.h: see the Autoconf documentation" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: fftw3.h:     section \"Present But Cannot Be Compiled\"" >&5
$as_echo "$as_me: WARNING: fftw3.h:     section \"Present But Cannot Be Compiled\"" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: fftw3.h: proceeding with the preprocessor's result" >&5
$as_echo "$as_me: WARNING: fftw3.h: proceeding with the preprocessor's result" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: fftw3.h: in the future, the compiler will take precedence" >&5
$as_echo "$as_me: WARNING: fftw3.h: in the future, the compiler will take precedence" >&2;}
    ( cat <<\_ASBOX
## ---------------------------- ##
## Report this to bertin@iap.fr ##
## ---------------------------- ##
_ASBOX
     ) | sed "s/^/$as_me: WARNING:     /" >&2
    ;;
esac
{ $as_echo "$as_me:$LINENO: checking for fftw3.h" >&5
$as_echo_n "checking for fftw3.h... " >&6; }
if test "${ac_cv_header_fftw3_h+set}" = set; then
  $as_echo_n "(cached) " >&6
else
  ac_cv_header_fftw3_h=$ac_header_preproc
fi
{ $as_echo "$as_me:$LINENO: result: $ac_cv_header_fftw3_h" >&5
$as_echo "$ac_cv_header_fftw3_h" >&6; }

fi
if test "x$ac_cv_header_fftw3_h" = x""yes; then
  acx_fftw_ok=yes
fi


      if test x$acx_fftw_ok = xyes; then

cat >>confdefs.h <<\_ACEOF
#define FFTW_H "fftw3.h"
_ACEOF

      else
        FFTW_ERROR="FFTW include files not found in $fftw_libdir/include!"
      fi
    fi
  fi
else
  as_ac_Header=`$as_echo "ac_cv_header_$fftw_incdir/fftw3.h" | $as_tr_sh`
if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
  { $as_echo "$as_me:$LINENO: checking for $fftw_incdir/fftw3.h" >&5
$as_echo_n "checking for $fftw_incdir/fftw3.h... " >&6; }
if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
  $as_echo_n "(cached) " >&6
fi
ac_res=`eval 'as_val=${'$as_ac_Header'}
		 $as_echo "$as_val"'`
	       { $as_echo "$as_me:$LINENO: result: $ac_res" >&5
$as_echo "$ac_res" >&6; }
else
  # Is the header compilable?
{ $as_echo "$as_me:$LINENO: checking $fftw_incdir/fftw3.h usability" >&5
$as_echo_n "checking $fftw_incdir/fftw3.h usability... " >&6; }
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
$ac_includes_default
#include <$fftw_incdir/fftw3.h>
_ACEOF
rm -f conftest.$ac_objext
if { (ac_try="$ac_compile"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
$as_echo "$ac_try_echo") >&5
  (eval "$ac_compile") 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } && {
	 test -z "$ac_c_werror_flag" ||
	 test ! -s conftest.err
       } && test -s conftest.$ac_objext; then
  ac_header_compiler=yes
else
  $as_echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

	ac_header_compiler=no
fi

rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
{ $as_echo "$as_me:$LINENO: result: $ac_header_compiler" >&5
$as_echo "$ac_header_compiler" >&6; }

# Is the header present?
{ $as_echo "$as_me:$LINENO: checking $fftw_incdir/fftw3.h presence" >&5
$as_echo_n "checking $fftw_incdir/fftw3.h presence... " >&6; }
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */
#include <$fftw_incdir/fftw3.h>
_ACEOF
if { (ac_try="$ac_cpp conftest.$ac_ext"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
$as_echo "$ac_try_echo") >&5
  (eval "$ac_cpp conftest.$ac_ext") 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } >/dev/null && {
	 test -z "$ac_c_preproc_warn_flag$ac_c_werror_flag" ||
	 test ! -s conftest.err
       }; then
  ac_header_preproc=yes
else
  $as_echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

  ac_header_preproc=no
fi

rm -f conftest.err conftest.$ac_ext
{ $as_echo "$as_me:$LINENO: result: $ac_header_preproc" >&5
$as_echo "$ac_header_preproc" >&6; }

# So?  What about this header?
case $ac_header_compiler:$ac_header_preproc:$ac_c_preproc_warn_flag in
  yes:no: )
    { $as_echo "$as_me:$LINENO: WARNING: $fftw_incdir/fftw3.h: accepted by the compiler, rejected by the preprocessor!" >&5
$as_echo "$as_me: WARNING: $fftw_incdir/fftw3.h: accepted by the compiler, rejected by the preprocessor!" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: $fftw_incdir/fftw3.h: proceeding with the compiler's result" >&5
$as_echo "$as_me: WARNING: $fftw_incdir/fftw3.h: proceeding with the compiler's result" >&2;}
    ac_header_preproc=yes
    ;;
  no:yes:* )
    { $as_echo "$as_me:$LINENO: WARNING: $fftw_incdir/fftw3.h: present but cannot be compiled" >&5
$as_echo "$as_me: WARNING: $fftw_incdir/fftw3.h: present but cannot be compiled" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: $fftw_incdir/fftw3.h:     check for missing prerequisite headers?" >&5
$as_echo "$as_me: WARNING: $fftw_incdir/fftw3.h:     check for missing prerequisite headers?" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: $fftw_incdir/fftw3.h: see the Autoconf documentation" >&5
$as_echo "$as_me: WARNING: $fftw_incdir/fftw3.h: see the Autoconf documentation" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: $fftw_incdir/fftw3.h:     section \"Present But Cannot Be Compiled\"" >&5
$as_echo "$as_me: WARNING: $fftw_incdir/fftw3.h:     section \"Present But Cannot Be Compiled\"" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: $fftw_incdir/fftw3.h: proceeding with the preprocessor's result" >&5
$as_echo "$as_me: WARNING: $fftw_incdir/fftw3.h: proceeding with the preprocessor's result" >&2;}
    { $as_echo "$as_me:$LINENO: WARNING: $fftw_incdir/fftw3.h: in the future, the compiler will take precedence" >&5
$as_echo "$as_me: WARNING: $fftw_incdir/fftw3.h: in the future, the compiler will take precedence" >&2;}
    ( cat <<\_ASBOX
## ---------------------------- ##
## Report this to bertin@iap.fr ##
## ---------------------------- ##
_ASBOX
     ) | sed "s/^/$as_me: WARNING:     /" >&2
    ;;
esac
{ $as_echo "$as_me:$LINENO: checking for $fftw_incdir/fftw3.h" >&5
$as_echo_n "checking for $fftw_incdir/fftw3.h... " >&6; }
if { as_var=$as_ac_Header; eval "test \"\${$as_var+set}\" = set"; }; then
  $as_echo_n "(cached) " >&6
else
  eval "$as_ac_Header=\$ac_header_preproc"
fi
ac_res=`eval 'as_val=${'$as_ac_Header'}
		 $as_echo "$as_val"'`
	       { $as_echo "$as_me:$LINENO: result: $ac_res" >&5
$as_echo "$ac_res" >&6; }

fi
as_val=`eval 'as_val=${'$as_ac_Header'}
		 $as_echo "$as_val"'`
   if test "x$as_val" = x""yes; then
  acx_fftw_ok=yes
fi


  if test x$acx_fftw_ok = xyes; then

cat >>confdefs.h <<_ACEOF
#define FFTW_H "$fftw_incdir/fftw3.h"
_ACEOF

  else
    FFTW_ERROR="FFTW include files not found in $fftw_incdir!"
  fi
fi


FFTW_LIBS=""
OLIBS="$LIBS"
LIBS=""

if test x$acx_fftw_ok = xyes; then
  if test x$fftw_libdir = x; then
    if test xyes = xyes; then
      { $as_echo "$as_me:$LINENO: checking for fftwf_execute in -lfftw3f" >&5
$as_echo_n "checking for fftwf_execute in -lfftw3f... " >&6; }
if test "${ac_cv_lib_fftw3f_fftwf_execute+set}" = set; then
  $as_echo_n "(cached) " >&6
else
  ac_check_lib_save_LIBS=$LIBS
LIBS="-lfftw3f -lm $LIBS"
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */

/* Override any GCC internal prototype to avoid an error.
   Use char because int might match the return type of a GCC
   builtin and then its argument prototype would still apply.  */
#ifdef __cplusplus
extern "C"
#endif
char fftwf_execute ();
int
main ()
{
return fftwf_execute ();
  ;
  return 0;
}
_ACEOF
rm -f conftest.$ac_objext conftest$ac_exeext
if { (ac_try="$ac_link"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
$as_echo "$ac_try_echo") >&5
  (eval "$ac_link") 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } && {
	 test -z "$ac_c_werror_flag" ||
	 test ! -s conftest.err
       } && test -s conftest$ac_exeext && {
	 test "$cross_compiling" = yes ||
	 $as_test_x conftest$ac_exeext
       }; then
  ac_cv_lib_fftw3f_fftwf_execute=yes
else
  $as_echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

	ac_cv_lib_fftw3f_fftwf_execute=no
fi

rm -rf conftest.dSYM
rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
      conftest$ac_exeext conftest.$ac_ext
LIBS=$ac_check_lib_save_LIBS
fi
{ $as_echo "$as_me:$LINENO: result: $ac_cv_lib_fftw3f_fftwf_execute" >&5
$as_echo "$ac_cv_lib_fftw3f_fftwf_execute" >&6; }
if test "x$ac_cv_lib_fftw3f_fftwf_execute" = x""yes; then
  acx_fftw_ok=yes
else
  acx_fftw_ok=no
fi

      if test x$acx_fftw_ok = xyes; then

cat >>confdefs.h <<\_ACEOF
#define HAVE_FFTWF 1
_ACEOF

        FFTW_LIBS="-lfftw3f"
      else
        FFTW_ERROR="FFTW single precision library files not found at usual locations!"
      fi
    else
      { $as_echo "$as_me:$LINENO: checking for fftw_execute in -lfftw3" >&5
$as_echo_n "checking for fftw_execute in -lfftw3... " >&6; }
if test "${ac_cv_lib_fftw3_fftw_execute+set}" = set; then
  $as_echo_n "(cached) " >&6
else
  ac_check_lib_save_LIBS=$LIBS
LIBS="-lfftw3 -lm $LIBS"
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */

/* Override any GCC internal prototype to avoid an error.
   Use char because int might match the return type of a GCC
   builtin and then its argument prototype would still apply.  */
#ifdef __cplusplus
extern "C"
#endif
char fftw_execute ();
int
main ()
{
return fftw_execute ();
  ;
  return 0;
}
_ACEOF
rm -f conftest.$ac_objext conftest$ac_exeext
if { (ac_try="$ac_link"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
$as_echo "$ac_try_echo") >&5
  (eval "$ac_link") 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } && {
	 test -z "$ac_c_werror_flag" ||
	 test ! -s conftest.err
       } && test -s conftest$ac_exeext && {
	 test "$cross_compiling" = yes ||
	 $as_test_x conftest$ac_exeext
       }; then
  ac_cv_lib_fftw3_fftw_execute=yes
else
  $as_echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

	ac_cv_lib_fftw3_fftw_execute=no
fi

rm -rf conftest.dSYM
rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
      conftest$ac_exeext conftest.$ac_ext
LIBS=$ac_check_lib_save_LIBS
fi
{ $as_echo "$as_me:$LINENO: result: $ac_cv_lib_fftw3_fftw_execute" >&5
$as_echo "$ac_cv_lib_fftw3_fftw_execute" >&6; }
if test "x$ac_cv_lib_fftw3_fftw_execute" = x""yes; then
  acx_fftw_ok=yes
else
  acx_fftw_ok=no
fi

      if test x$acx_fftw_ok = xyes; then

cat >>confdefs.h <<\_ACEOF
#define HAVE_FFTW 1
_ACEOF

        FFTW_LIBS="-lfftw3"
      else
        FFTW_ERROR="FFTW double precision library files not found at usual locations!"
      fi
    fi
    if test x$acx_fftw_ok = xyes && test x$use_pthreads = xyes; then
      if test xyes = xyes; then
        { $as_echo "$as_me:$LINENO: checking for fftwf_init_threads in -lfftw3f" >&5
$as_echo_n "checking for fftwf_init_threads in -lfftw3f... " >&6; }
if test "${ac_cv_lib_fftw3f_fftwf_init_threads+set}" = set; then
  $as_echo_n "(cached) " >&6
else
  ac_check_lib_save_LIBS=$LIBS
LIBS="-lfftw3f -lm -lpthread $LIBS"
cat >conftest.$ac_ext <<_ACEOF
/* confdefs.h.  */
_ACEOF
cat confdefs.h >>conftest.$ac_ext
cat >>conftest.$ac_ext <<_ACEOF
/* end confdefs.h.  */

/* Override any GCC internal prototype to avoid an error.
   Use char because int might match the return type of a GCC
   builtin and then its argument prototype would still apply.  */
#ifdef __cplusplus
extern "C"
#endif
char fftwf_init_threads ();
int
main ()
{
return fftwf_init_threads ();
  ;
  return 0;
}
_ACEOF
rm -f conftest.$ac_objext conftest$ac_exeext
if { (ac_try="$ac_link"
case "(($ac_try" in
  *\"* | *\`* | *\\*) ac_try_echo=\$ac_try;;
  *) ac_try_echo=$ac_try;;
esac
eval ac_try_echo="\"\$as_me:$LINENO: $ac_try_echo\""
$as_echo "$ac_try_echo") >&5
  (eval "$ac_link") 2>conftest.er1
  ac_status=$?
  grep -v '^ *+' conftest.er1 >conftest.err
  rm -f conftest.er1
  cat conftest.err >&5
  $as_echo "$as_me:$LINENO: \$? = $ac_status" >&5
  (exit $ac_status); } && {
	 test -z "$ac_c_werror_flag" ||
	 test ! -s conftest.err
       } && test -s conftest$ac_exeext && {
	 test "$cross_compiling" = yes ||
	 $as_test_x conftest$ac_exeext
       }; then
  ac_cv_lib_fftw3f_fftwf_init_threads=yes
else
  $as_echo "$as_me: failed program was:" >&5
sed 's/^/| /' conftest.$ac_ext >&5

	ac_cv_lib_fftw3f_fftwf_init_threads=no
fi

rm -rf conftest.dSYM
rm -f core conftest.err conftest.$ac_objext conftest_ipa8_conftest.oo \
      conftest$ac_exeext conftest.$ac_ext
LIBS=$ac_check_lib_save_LIBS
fi
{ $as_echo "$as_me:$LINENO: result: $ac_cv_lib_fftw3f_fftwf_init_threads" >&5
$as_echo "$ac_cv_lib_fftw3f_fftwf_init_threads" >&6; }
if test "x$ac_cv_lib_fftw3f_fftwf_init_threads" = x""yes; then
  acx_fftwt_ok=yes
else
  acx_fftwt_ok=no
fi

        if test x$acx_fftwt_ok = xyes; then

cat >>confdefs.h <<\_ACEOF
#define HAVE_FFTWF_MP 1
_ACEOF