source: heimdal/trunk/cf/test-package.m4

dnl $Id$
dnl
dnl rk_TEST_PACKAGE(package,headers,libraries,extra libs,
dnl                     default locations, conditional, config-program, headers)

AC_DEFUN([rk_TEST_PACKAGE],[
AC_ARG_WITH($1,
        AS_HELP_STRING([--with-$1=dir],[use $1 in dir]))
AC_ARG_WITH($1-lib,
        AS_HELP_STRING([--with-$1-lib=dir],[use $1 libraries in dir]),
[if test "$withval" = "yes" -o "$withval" = "no"; then
  AC_MSG_ERROR([No argument for --with-$1-lib])
elif test "X$with_$1" = "X"; then
  with_$1=yes
fi])
AC_ARG_WITH($1-include,
        AS_HELP_STRING([--with-$1-include=dir],[use $1 headers in dir]),
[if test "$withval" = "yes" -o "$withval" = "no"; then
  AC_MSG_ERROR([No argument for --with-$1-include])
elif test "X$with_$1" = "X"; then
  with_$1=yes
fi])
AC_ARG_WITH($1-config,
        AS_HELP_STRING([--with-$1-config=path],[config program for $1]))

m4_ifval([$6],
        m4_define([rk_pkgname], $6),
        m4_define([rk_pkgname], AS_TR_CPP($1)))

AC_MSG_CHECKING(for $1)

case "$with_$1" in
yes|"") d='$5' ;;
no)     d= ;;
*)      d="$with_$1" ;;
esac

header_dirs=
lib_dirs=
for i in $d; do
        if test "$with_$1_include" = ""; then
                if test -d "$i/include/$1"; then
                        header_dirs="$header_dirs $i/include/$1"
                fi
                if test -d "$i/include"; then
                        header_dirs="$header_dirs $i/include"
                fi
        fi
        if test "$with_$1_lib" = ""; then
                if test -d "$i/lib$abilibdirext"; then
                        lib_dirs="$lib_dirs $i/lib$abilibdirext"
                fi
        fi
done

if test "$with_$1_include"; then
        header_dirs="$with_$1_include $header_dirs"
fi
if test "$with_$1_lib"; then
        lib_dirs="$with_$1_lib $lib_dirs"
fi

if test "$with_$1_config" = ""; then
        with_$1_config='$7'
fi

$1_cflags=
$1_libs=

case "$with_$1_config" in
yes|no|""|"$7")
        if test -f $with_$1/bin/$7 ; then
                with_$1_config=$with_$1/bin/$7
        fi
        ;;
esac

case "$with_$1_config" in
yes|no|"")
        ;;
*)
        $1_cflags="`$with_$1_config --cflags 2>&1`"
        $1_libs="`$with_$1_config --libs 2>&1`"
        ;;
esac

found=no
if test "$with_$1" != no; then
        save_CFLAGS="$CFLAGS"
        save_LIBS="$LIBS"
        if test "$[]$1_cflags" -a "$[]$1_libs"; then
                CFLAGS="$[]$1_cflags $save_CFLAGS"
                LIBS="$[]$1_libs $save_LIBS"
                m4_ifval([$8],[AC_CHECK_HEADERS([[$8]])])
                AC_LINK_IFELSE([AC_LANG_PROGRAM([[$2]],[[]])],[
                        INCLUDE_$1="$[]$1_cflags"
                        LIB_$1="$[]$1_libs"
                        AC_MSG_RESULT([from $with_$1_config])
                        found=yes])
        fi
        if test "$found" = no; then
                ires= lres=
                for i in $header_dirs; do
                        CFLAGS="-I$i $save_CFLAGS"
                        m4_ifval([$8],[AC_CHECK_HEADERS([[$8]])])
                        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[$2]],[[]])],[ires=$i;break])
                done
                for i in $lib_dirs; do
                        LIBS="-L$i $3 $4 $save_LIBS"
                        AC_LINK_IFELSE([AC_LANG_PROGRAM([[$2]],[[]])],[lres=$i;break])
                done
                if test "$ires" -a "$lres" -a "$with_$1" != "no"; then
                        INCLUDE_$1="-I$ires"
                        LIB_$1="-L$lres $3 $4"
                        found=yes
                        AC_MSG_RESULT([headers $ires, libraries $lres])
                fi
        fi
        CFLAGS="$save_CFLAGS"
        LIBS="$save_LIBS"
fi

if test "$found" = yes; then
        AC_DEFINE_UNQUOTED(rk_pkgname, 1, [Define if you have the $1 package.])
        with_$1=yes
else
        with_$1=no
        INCLUDE_$1=
        LIB_$1=
        AC_MSG_RESULT(no)
fi

AC_SUBST(INCLUDE_$1)
AC_SUBST(LIB_$1)
])