dnl acinclude.m4. Change *this* file to add new or change macros.
dnl When changes have been made, delete aclocal.m4 and run
dnl "aclocal".
dnl
dnl DO NOT change aclocal.m4 !
dnl

dnl-----------------------------------------------------------------------------
dnl  LA_SEARCH_FILE(variable, filename, PATH)
dnl  Search "filename" in the specified "PATH", "variable" will 
dnl  contain the full pathname or the empty string
dnl  PATH is space-separated list of directories.
dnl  by Florian Bomers
dnl-----------------------------------------------------------------------------
AC_DEFUN(LA_SEARCH_FILE,[
  $1=
  dnl hack: eliminate line feeds in $2
  for FILE in $2; do
    for DIR in $3; do
      dnl use PATH in order
      if test ".$1"="." && test -f "$DIR/$FILE"; then
        $1=$DIR
      fi
    done
  done
])

dnl-----------------------------------------------------------------------------
dnl  LA_SEARCH_LIB(lib-variable, include-variable, lib-filename, header-filename, prefix)
dnl  looks for "lib-filename" and "header-filename" in the area of "prefix".
dnl  if found, "lib-variable" and "include-variable" are set to the
dnl  respective paths.
dnl  prefix is a single path
dnl  libs are searched in prefix, prefix/lib
dnl  headers are searched in prefix, prefix/include,
dnl  
dnl  If one of them is not found, both "lib-variable", "include-variable" are 
dnl  set to the empty string.
dnl 
dnl  TODO: assert function call to verify lib
dnl 
dnl  by Florian Bomers
dnl-----------------------------------------------------------------------------
AC_DEFUN(LA_SEARCH_LIB,[
  dnl look for lib
  LA_SEARCH_FILE($1, $3, $5 $5/lib )
  dnl look for header.
  LA_SEARCH_FILE($2, $4, $5 $5/include )
  if test ".$1" = "." || test ".$2" = "."; then
    $1=
    $2=
  fi
])