dnl This internal macro fails to work properly with OTHER internal macros.

dnl Basically, if the prologue is [], then no message should be generated.

dnl This macro is in autoconf 2.52

m4_define([AC_LANG_PROGRAM(Fortran 77)],

[m4_if([$1],[[[]]],,[m4_ifval([$1],

       [m4_warn([syntax], [$0: ignoring PROLOGUE: $1])])])dnl

      program main

$2

      end])

dnl/*D

dnl PAC_PROG_CHECK_INSTALL_WORKS - Check whether the install program in INSTALL

dnl works.

dnl

dnl Synopsis:

dnl PAC_PROG_CHECK_INSTALL_WORKS

dnl

dnl Output Effect:

dnl   Sets the variable 'INSTALL' to the value of 'ac_sh_install' if 

dnl   a file cannot be installed into a local directory with the 'INSTALL'

dnl   program

dnl

dnl Notes:

dnl   The 'AC_PROG_INSTALL' scripts tries to avoid broken versions of 

dnl   install by avoiding directories such as '/usr/sbin' where some 

dnl   systems are known to have bad versions of 'install'.  Unfortunately, 

dnl   this is exactly the sort of test-on-name instead of test-on-capability

dnl   that 'autoconf' is meant to eliminate.  The test in this script

dnl   is very simple but has been adequate for working around problems 

dnl   on Solaris, where the '/usr/sbin/install' program (known by 

dnl   autoconf to be bad because it is in /usr/sbin) is also reached by a 

dnl   soft link through /bin, which autoconf believes is good.

dnl

dnl   No variables are cached to ensure that we do not make a mistake in 

dnl   our choice of install program.

dnl

dnl   The Solaris configure requires the directory name to immediately

dnl   follow the '-c' argument, rather than the more common 

dnl.vb

dnl      args sourcefiles destination-dir

dnl.ve

dnl D*/

AC_DEFUN([PAC_PROG_CHECK_INSTALL_WORKS],[

if test -z "$INSTALL" ; then

    AC_MSG_RESULT([No install program available])

else

    # first make any "confdb/install-sh -c" into an absolute path

    # this is a hack, but it's still much cleaner than anything else I could

    # come up with (see tt#1007) [goodell@]

    AS_CASE(["$INSTALL"],

            [/*],[:],

            [*install-sh*],[INSTALL="$master_top_srcdir/$INSTALL"])

    # Check that this install really works

    rm -f conftest

    echo "Test file" > conftest

    if test ! -d .conftest ; then mkdir .conftest ; fi

    AC_MSG_CHECKING([whether install works])

    if $INSTALL conftest .conftest >/dev/null 2>&1 ; then

        installOk=yes

    else

        installOk=no

    fi

    rm -rf .conftest conftest

    AC_MSG_RESULT($installOk)

    if test "$installOk" = no ; then

        if test -n "$ac_install_sh" ; then

            INSTALL=$ac_install_sh

        else

	    AC_MSG_ERROR([Unable to find working install])

        fi

    fi

fi

])