# Top level -*- makefile -*- fragment for LTO
#   Copyright (C) 2009-2018 Free Software Foundation, Inc.

#This file is part of GCC.

#GCC is free software; you can redistribute it and/or modify
#it under the terms of the GNU General Public License as published by
#the Free Software Foundation; either version 3, or (at your option)
#any later version.

#GCC is distributed in the hope that it will be useful,
#but WITHOUT ANY WARRANTY; without even the implied warranty of
#MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
#GNU General Public License for more details.

# You should have received a copy of the GNU General Public License
# along with GCC; see the file COPYING3.  If not see
# <http://www.gnu.org/licenses/>.

# Variables

# The name of the LTO compiler.
LTO_EXE = lto1$(exeext)
# The LTO-specific object files inclued in $(LTO_EXE).
LTO_OBJS = lto/lto-lang.o lto/lto.o lto/lto-object.o attribs.o lto/lto-partition.o lto/lto-symtab.o
lto_OBJS = $(LTO_OBJS)

# this is only useful in a LTO bootstrap, but this does not work right
# now. Should reenable after this is fixed, but only when LTO bootstrap
# is enabled.

#ifeq ($(if $(wildcard ../stage_current),$(shell cat \
#  ../stage_current)),stageautofeedback)
#$(LTO_OBJS): CFLAGS += -fauto-profile=lto1.fda
#$(LTO_OBJS): lto1.fda
#endif

# Rules

# These hooks are used by the main GCC Makefile.  Consult that
# Makefile for documentation.
lto.all.cross: $(LTO_EXE)
lto.start.encap: $(LTO_EXE)
lto.rest.encap:
lto.tags:
lto.install-common:
lto.install-man:
lto.install-info:
lto.dvi:
lto.pdf:
lto.install-pdf:
lto.html:
lto.install-html:
lto.uninstall:
lto.info:
lto.man:
lto.srcextra:
lto.srcman:
lto.srcinfo:
lto.install-plugin:

lto.mostlyclean:
	rm -f $(LTO_OBJS) $(LTO_EXE) lto1.fda

lto.clean:
lto.distclean:
lto.maintainer-clean:
lto.stage1:
lto.stage2:
lto.stage3:
lto.stage4:
lto.stageprofile:
lto.stagefeedback:

# LTO rules.

# Use strict warnings for this front end.
lto-warn = $(STRICT_WARN)

$(LTO_EXE): $(LTO_OBJS) $(BACKEND) $(LIBDEPS)
	+$(LLINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
		$(LTO_OBJS) $(BACKEND) $(BACKENDLIBS) $(LIBS)

lto1.fda: ../prev-gcc/lto1$(exeext) ../prev-gcc/$(PERF_DATA)
	$(CREATE_GCOV) -binary ../prev-gcc/lto1$(exeext) -gcov lto1.fda -profile ../prev-gcc/$(PERF_DATA) -gcov_version 1

# LTO testing is done as part of C/C++/Fortran etc. testing.
check-lto: