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      1 # Top level configure fragment for LTO
      2 #   Copyright (C) 2009-2022 Free Software Foundation, Inc.
      3 
      4 #This file is part of GCC.
      5 
      6 #GCC is free software; you can redistribute it and/or modify
      7 #it under the terms of the GNU General Public License as published by
      8 #the Free Software Foundation; either version 3, or (at your option)
      9 #any later version.
     10 
     11 #GCC is distributed in the hope that it will be useful,
     12 #but WITHOUT ANY WARRANTY; without even the implied warranty of
     13 #MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     14 #GNU General Public License for more details.
     15 
     16 # You should have received a copy of the GNU General Public License
     17 # along with GCC; see the file COPYING3.  If not see
     18 # <http://www.gnu.org/licenses/>.
     19 
     20 language="lto"
     21 compilers="lto1\$(exeext)"
     22 
     23 gtfiles="\$(srcdir)/lto/lto-tree.h \$(srcdir)/lto/lto-lang.cc \$(srcdir)/lto/lto.cc \$(srcdir)/lto/lto.h \$(srcdir)/lto/lto-common.h \$(srcdir)/lto/lto-common.cc \$(srcdir)/lto/lto-dump.cc"
     24 
     25 # LTO is a special front end.  From a user's perspective it is not
     26 # really a language, but a middle end feature.  However, the GIMPLE
     27 # reading module is implemented as a front end, so enabling LTO means
     28 # enabling this "language". To enable LTO functionality, use
     29 # --enable-lto when configuring the compiler.
     30 build_by_default=no
     31 
     32 # Add LTO to boot language if it is enabled.
     33 boot_language=$enable_lto
     34