openmpi/config/ompi_cxx_find_template_repository.m4

dnl -*- shell-script -*-
dnl
dnl Copyright (c) 2004-2005 The Trustees of Indiana University and Indiana
dnl                         University Research and Technology
dnl                         Corporation.  All rights reserved.
dnl Copyright (c) 2004-2005 The University of Tennessee and The University
dnl                         of Tennessee Research Foundation.  All rights
dnl                         reserved.
dnl Copyright (c) 2004-2005 High Performance Computing Center Stuttgart, 
dnl                         University of Stuttgart.  All rights reserved.
dnl Copyright (c) 2004-2005 The Regents of the University of California.
dnl                         All rights reserved.
dnl $COPYRIGHT$
dnl 
dnl Additional copyrights may follow
dnl 
dnl $HEADER$
dnl

AC_DEFUN([OMPI_CXX_FIND_TEMPLATE_REPOSITORY],[
    AC_REQUIRE([AC_PROG_GREP])

    #
    # Arguments: None
    #
    # Dependencies: None
    #
    # See if the compiler makes template repository directories
    # Warning: this is a really screwy example! -JMS
    #
    # Sets OMPI_CXX_TEMPLATE_REPOSITORY to the template repository, or blank.
    # Must call AC_SUBST manually
    #
    AC_CACHE_CHECK([for C++ template_repository_directory],
                   [ompi_cv_cxx_template_repository],
                   [_OMPI_CXX_FIND_TEMPLATE_REPOSITORY])

    if test "$ompi_cv_cxx_template_repository" = "not used" ; then
        OMPI_CXX_TEMPLATE_REPOSITORY=
    elif test "$ompi_cv_cxx_template_repository" = "templates not supported" ; then
        OMPI_CXX_TEMPLATE_REPOSITORY=
    else
        OMPI_CXX_TEMPLATE_REPOSITORY="$ompi_cv_cxx_template_repository"
    fi
])


AC_DEFUN([_OMPI_CXX_FIND_TEMPLATE_REPOSITORY],[
# Find the repository
mkdir conf_tmp_$$
cd conf_tmp_$$
cat > conftest.h <<EOF
template <class T>
class foo {
public:
  foo(T yow) : data(yow) { yow.member(3); };
  void member(int i);
private:
  T data;
};

class bar {
public:
  bar(int i) { data = i; };
  void member(int j) { data = data * j; };

private:
  int data;
};
EOF

cat > conftest2.C <<EOF
#include "conftest.h"

void
some_other_function(void)
{
  foo<bar> var1(6);
  foo< foo<bar> > var2(var1);
}
EOF

cat > conftest1.C <<EOF
#include "conftest.h"

void some_other_function(void);

template <class T>
void
foo<T>::member(int i)
{
  i += 2;
}

int
main()
{
  foo<bar> var1(6);
  foo< foo<bar> > var2(var1);

  some_other_function();
  return 0;
}
EOF

ompi_template_failed=
echo configure:__oline__: $CXX $CXXFLAGS -c conftest1.C >&5
$CXX $CXXFLAGS -c conftest1.C >&5 2>&5
if test ! -f conftest1.o ; then
    ompi_cv_cxx_template_repository="templates not supported"
    echo configure:__oline__: here is the program that failed: >&5
    cat conftest1.C >&5
    echo configure:__oline__: here is conftest.h: >&5
    cat conftest.h >&5
    ompi_template_failed=1
else
    echo configure:__oline__: $CXX $CXXFLAGS -c conftest2.C >&5
    $CXX $CXXFLAGS -c conftest2.C >&5 2>&5
    if test ! -f conftest2.o ; then
        ompi_cv_cxx_template_repository=
	echo configure:__oline__: here is the program that failed: >&5
	cat conftest2.C >&5
	echo configure:__oline__: here is conftest.h: >&5
	cat conftest.h >&5
    else
	rm -rf conftest*

	for ompi_file in `ls`
	do
	    if test "$ompi_file" != "." -a "$ompi_file" != ".."; then
		# Is it a directory?
		if test -d "$ompi_file"; then
		    ompi_template_dir="$ompi_file $ompi_template_dir"
		    
		# Or is it a file?
		else
		    name="`echo $ompi_file | cut -d. -f1`"
		    
		    temp_mask=
		    if test "$name" = "main" -o "$name" = "other"; then
			temp_mask="`echo $ompi_file | cut -d. -f2`"
			if test "$ompi_template_filemask" = ""; then
			ompi_template_filemask="$temp_mask";
			elif test "`echo $ompi_template_filemask | $GREP $temp_mask`" = ""; then
			ompi_template_filemask="$ompi_template_filemask $temp_mask"
			fi
		    fi
		fi
	    fi
	done
	if test "$ompi_template_filemask" != ""; then
	    temp_mask=
	    for mask in $ompi_template_filemask
	    do
		temp_mask="*.$mask $temp_mask"
	    done
	    ompi_template_filemask=$temp_mask
	fi
    fi
fi
ompi_cv_cxx_template_repository="$ompi_template_dir $ompi_template_filemask"

if test "`echo $ompi_cv_cxx_template_repository`" = ""; then
    ompi_cv_cxx_template_repository="not used"
fi
cd ..
rm -rf conf_tmp_$$

# Clean up
unset ompi_file ompi_template_failed ompi_template_dir])