1# Top level -*- makefile -*- fragment for LTO
2#   Copyright (C) 2009-2018 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# Variables
21
22# The name of the LTO compiler.
23LTO_EXE = lto1$(exeext)
24# The LTO-specific object files inclued in $(LTO_EXE).
25LTO_OBJS = lto/lto-lang.o lto/lto.o lto/lto-object.o attribs.o lto/lto-partition.o lto/lto-symtab.o
26lto_OBJS = $(LTO_OBJS)
27
28# this is only useful in a LTO bootstrap, but this does not work right
29# now. Should reenable after this is fixed, but only when LTO bootstrap
30# is enabled.
31
32#ifeq ($(if $(wildcard ../stage_current),$(shell cat \
33#  ../stage_current)),stageautofeedback)
34#$(LTO_OBJS): CFLAGS += -fauto-profile=lto1.fda
35#$(LTO_OBJS): lto1.fda
36#endif
37
38# Rules
39
40# These hooks are used by the main GCC Makefile.  Consult that
41# Makefile for documentation.
42lto.all.cross: $(LTO_EXE)
43lto.start.encap: $(LTO_EXE)
44lto.rest.encap:
45lto.tags:
46lto.install-common:
47lto.install-man:
48lto.install-info:
49lto.dvi:
50lto.pdf:
51lto.install-pdf:
52lto.html:
53lto.install-html:
54lto.uninstall:
55lto.info:
56lto.man:
57lto.srcextra:
58lto.srcman:
59lto.srcinfo:
60lto.install-plugin:
61
62lto.mostlyclean:
63	rm -f $(LTO_OBJS) $(LTO_EXE) lto1.fda
64
65lto.clean:
66lto.distclean:
67lto.maintainer-clean:
68lto.stage1:
69lto.stage2:
70lto.stage3:
71lto.stage4:
72lto.stageprofile:
73lto.stagefeedback:
74
75# LTO rules.
76
77# Use strict warnings for this front end.
78lto-warn = $(STRICT_WARN)
79
80$(LTO_EXE): $(LTO_OBJS) $(BACKEND) $(LIBDEPS)
81	+$(LLINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
82		$(LTO_OBJS) $(BACKEND) $(BACKENDLIBS) $(LIBS)
83
84lto1.fda: ../prev-gcc/lto1$(exeext) ../prev-gcc/$(PERF_DATA)
85	$(CREATE_GCOV) -binary ../prev-gcc/lto1$(exeext) -gcov lto1.fda -profile ../prev-gcc/$(PERF_DATA) -gcov_version 1
86
87# LTO testing is done as part of C/C++/Fortran etc. testing.
88check-lto:
89