1# Top level -*- makefile -*- fragment for GNU C++.
2#   Copyright (C) 1994-2022 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# This file provides the language dependent support in the main Makefile.
21# Each language makefile fragment must provide the following targets:
22#
23# foo.all.cross, foo.start.encap, foo.rest.encap,
24# foo.install-common, foo.install-man, foo.install-info, foo.install-pdf,
25# foo.install-html, foo.info, foo.dvi, foo.pdf, foo.html, foo.uninstall,
26# foo.mostlyclean, foo.clean, foo.distclean,
27# foo.maintainer-clean, foo.stage1, foo.stage2, foo.stage3, foo.stage4
28#
29# where `foo' is the name of the language.
30#
31# It should also provide rules for:
32#
33# - making any compiler driver (eg: g++)
34# - the compiler proper (eg: cc1plus)
35# - define the names for selecting the language in LANGUAGES.
36
37# Actual names to use when installing a native compiler.
38CXX_INSTALL_NAME := $(shell echo c++|sed '$(program_transform_name)')
39GXX_INSTALL_NAME := $(shell echo g++|sed '$(program_transform_name)')
40CXX_TARGET_INSTALL_NAME := $(target_noncanonical)-$(shell echo c++|sed '$(program_transform_name)')
41GXX_TARGET_INSTALL_NAME := $(target_noncanonical)-$(shell echo g++|sed '$(program_transform_name)')
42CP_PLUGIN_HEADERS := cp-tree.h cxx-pretty-print.h name-lookup.h type-utils.h operators.def
43
44#
45# Define the names for selecting c++ in LANGUAGES.
46# Note that it would be nice to move the dependency on g++
47# into the C++ rule, but that needs a little bit of work
48# to do the right thing within all.cross.
49c++: cc1plus$(exeext)
50c++.serial = cc1plus$(exeext)
51
52# Tell GNU make to ignore these if they exist.
53.PHONY: c++
54
55CFLAGS-cp/g++spec.o += $(DRIVER_DEFINES)
56
57CFLAGS-cp/module.o += -DHOST_MACHINE=\"$(host)\" \
58	-DTARGET_MACHINE=\"$(target)\"
59
60# In non-release builds, use a date-related module version.
61ifneq ($(DEVPHASE_c),)
62# Some date's don't grok 'r', if so, simply use today's date,
63# but use date from previous stage if bootstrapping to avoid breaking
64# bootstraps across midnight.
65s-cp-module-version: $(srcdir)/cp/module.cc
66	MODULE_VERSION=`if date -r $(srcdir)/cp/module.cc '+%y%m%d%H%MU' \
67			  2>/dev/null; then :; \
68			elif test ../prev-gcc/s-cp-module-version -nt \
69			       $(srcdir)/cp/module.cc; then \
70			  cat ../prev-gcc/s-cp-module-version; \
71			else \
72			  date '+%y%m%d0000U' 2>/dev/null; \
73			fi`; \
74	echo $${MODULE_VERSION} > s-cp-module-version
75cp/module.o: s-cp-module-version
76CFLAGS-cp/module.o += -DMODULE_VERSION='$(shell cat s-cp-module-version)'
77endif
78
79# Create the compiler driver for g++.
80GXX_OBJS = $(GCC_OBJS) cp/g++spec.o
81xg++$(exeext): $(GXX_OBJS) $(EXTRA_GCC_OBJS) libcommon-target.a $(LIBDEPS)
82	+$(LINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
83	  $(GXX_OBJS) $(EXTRA_GCC_OBJS) libcommon-target.a \
84	  $(EXTRA_GCC_LIBS) $(LIBS)
85
86# Create a version of the g++ driver which calls the cross-compiler.
87g++-cross$(exeext): xg++$(exeext)
88	-rm -f g++-cross$(exeext)
89	cp xg++$(exeext) g++-cross$(exeext)
90
91# The compiler itself.
92# Shared with C front end:
93CXX_C_OBJS = attribs.o incpath.o \
94	$(C_COMMON_OBJS) $(CXX_TARGET_OBJS)
95
96# Language-specific object files for C++ and Objective C++.
97CXX_AND_OBJCXX_OBJS = \
98	cp/call.o cp/class.o cp/constexpr.o cp/constraint.o \
99	cp/coroutines.o cp/cp-gimplify.o \
100	cp/cp-objcp-common.o cp/cp-ubsan.o \
101	cp/cvt.o cp/cxx-pretty-print.o \
102	cp/decl.o cp/decl2.o cp/dump.o \
103	cp/error.o cp/except.o cp/expr.o \
104	cp/friend.o cp/init.o \
105	cp/lambda.o cp/lex.o cp/logic.o \
106	cp/mangle.o cp/mapper-client.o cp/mapper-resolver.o \
107	cp/method.o cp/module.o \
108	cp/name-lookup.o cp/optimize.o \
109	cp/parser.o cp/pt.o cp/ptree.o \
110	cp/rtti.o \
111	cp/search.o cp/semantics.o \
112	cp/tree.o cp/typeck.o cp/typeck2.o \
113	cp/vtable-class-hierarchy.o $(CXX_C_OBJS)
114
115ifeq ($(if $(wildcard ../stage_current),$(shell cat \
116  ../stage_current)),stageautofeedback)
117$(CXX_AND_OBJCXX_OBJS): CFLAGS += -fauto-profile=cc1plus.fda
118$(CXX_AND_OBJCXX_OBJS): cc1plus.fda
119endif
120
121# Language-specific object files for C++.
122CXX_OBJS = cp/cp-lang.o c-family/stub-objc.o $(CXX_AND_OBJCXX_OBJS)
123
124c++_OBJS = $(CXX_OBJS) cc1plus-checksum.o cp/g++spec.o
125
126# Use strict warnings for this front end.
127cp-warn = $(STRICT_WARN)
128
129# compute checksum over all object files and the options
130# re-use the checksum from the prev-final stage so it passes
131# the bootstrap comparison and allows comparing of the cc1 binary
132cc1plus-checksum.cc : build/genchecksum$(build_exeext) checksum-options \
133	$(CXX_OBJS) $(BACKEND) $(CODYLIB) $(LIBDEPS) 
134	if [ -f ../stage_final ] \
135	   && cmp -s ../stage_current ../stage_final; then \
136	   cp ../prev-gcc/cc1plus-checksum.cc cc1plus-checksum.cc; \
137	else \
138	  build/genchecksum$(build_exeext) $(CXX_OBJS) $(BACKEND) $(CODYLIB) $(LIBDEPS) \
139                     checksum-options > cc1plus-checksum.cc.tmp &&	   \
140	  $(SHELL) $(srcdir)/../move-if-change cc1plus-checksum.cc.tmp cc1plus-checksum.cc; \
141	fi
142
143cc1plus$(exeext): $(CXX_OBJS) cc1plus-checksum.o $(BACKEND) $(CODYLIB) $(LIBDEPS) $(c++.prev)
144	@$(call LINK_PROGRESS,$(INDEX.c++),start)
145	+$(LLINKER) $(ALL_LINKERFLAGS) $(LDFLAGS) -o $@ \
146	      $(CXX_OBJS) cc1plus-checksum.o $(BACKEND) $(CODYLIB) $(NETLIBS) \
147		$(LIBS) $(BACKENDLIBS)
148	@$(call LINK_PROGRESS,$(INDEX.c++),end)
149
150ifeq ($(ENABLE_MAINTAINER_RULES), true)
151# Special build rule.  This is a maintainer rule, that is only
152# available when GCC is configured with --enable-maintainer-mode.  In
153# other cases, it is not available to avoid triggering rebuilds if a
154# user has the source checked out with unusual timestamps.
155$(srcdir)/cp/cfns.h: $(srcdir)/cp/cfns.gperf
156	@echo "NOT REBUILDING $@"
157NetBSD_DISABLED_cfns.h:
158else
159# We keep the rule so that you can still force a rebuild, even if you
160# didn't configure GCC with --enable-maintainer-mode, by manually
161# deleting the $(srcdir)/cp/cfns.h file.
162$(srcdir)/cp/cfns.h:
163endif
164	gperf -o -C -E -k '1-6,$$' -j1 -D -N 'libc_name_p' -L C++ \
165		$(srcdir)/cp/cfns.gperf --output-file $(srcdir)/cp/cfns.h
166
167cc1plus.fda: ../stage1-gcc/cc1plus$(exeext) ../prev-gcc/$(PERF_DATA)
168	$(CREATE_GCOV) -binary ../stage1-gcc/cc1plus$(exeext) -gcov cc1plus.fda -profile ../prev-gcc/$(PERF_DATA) -gcov_version 1
169
170#
171# Build hooks:
172
173c++.all.cross: g++-cross$(exeext)
174c++.start.encap: xg++$(exeext)
175c++.rest.encap:
176c++.info:
177c++.install-info:
178c++.dvi:
179c++.install-dvi:
180c++.pdf:
181c++.install-pdf:
182c++.install-html:
183c++.html:
184c++.srcinfo:
185c++.srcextra:
186
187c++.tags: force
188	cd $(srcdir)/cp; $(ETAGS) -o TAGS.sub *.c *.cc *.h --language=none \
189	  --regex='/DEFTREECODE [(]\([A-Z_]+\)/\1/' cp-tree.def; \
190	$(ETAGS) --include TAGS.sub --include ../TAGS.sub
191
192c++.man: doc/g++.1
193
194c++.srcman: doc/g++.1
195	-cp -p $^ $(srcdir)/doc
196
197# C++ selftests
198
199# If C++ is enabled, require the selftests to be run for it
200# at each stage of the build:
201selftest-c++: s-selftest-c++
202
203CPP_SELFTEST_DEPS = cc1plus$(exeext) $(SELFTEST_DEPS)
204CPP_SELFTEST_FLAGS = -xc++ $(SELFTEST_FLAGS)
205
206# Run the C++ selftests
207s-selftest-c++: $(CPP_SELFTEST_DEPS)
208	$(GCC_FOR_TARGET) $(CPP_SELFTEST_FLAGS)
209	$(STAMP) $@
210
211# Convenience method for running C++ selftests under gdb:
212.PHONY: selftest-c++-gdb
213selftest-c++-gdb: $(CPP_SELFTEST_DEPS)
214	$(GCC_FOR_TARGET) $(CPP_SELFTEST_FLAGS) \
215	  -wrapper gdb,--args
216
217# Convenience method for running C++ selftests under valgrind:
218.PHONY: selftest-c++-valgrind
219selftest-c++-valgrind: $(CPP_SELFTEST_DEPS)
220	$(GCC_FOR_TARGET) $(CPP_SELFTEST_FLAGS) \
221	  -wrapper valgrind,--leak-check=full
222
223# 'make check' in gcc/ looks for check-c++, as do all toplevel C++-related
224# check targets.  However, our DejaGNU framework requires 'check-g++' as its
225# entry point.  We feed the former to the latter here.
226check-c++ : check-g++
227
228# Run the testsuite in C++17 mode.
229check-c++1z: check-c++17
230check-c++17:
231	$(MAKE) RUNTESTFLAGS="$(RUNTESTFLAGS)" GXX_TESTSUITE_STDS=17 check-g++
232
233# Run the testsuite in all standard conformance levels.
234check-c++-all:
235	$(MAKE) RUNTESTFLAGS="$(RUNTESTFLAGS) --stds=98,11,14,17,20,23,impcx" check-g++
236
237# Run the testsuite with garbage collection at every opportunity.
238check-g++-strict-gc:
239	$(MAKE) RUNTESTFLAGS="$(RUNTESTFLAGS) --extra_opts,--param,ggc-min-heapsize=0,--param,ggc-min-expand=0,--param,hash-table-verification-limit=10000" \
240	  TESTSUITEDIR="$(TESTSUITEDIR).gc" check-g++
241check-c++-subtargets : check-g++-subtargets
242# List of targets that can use the generic check- rule and its // variant.
243lang_checks += check-g++
244lang_checks_parallelized += check-g++
245# For description see the check_$lang_parallelize comment in gcc/Makefile.in.
246check_g++_parallelize = 10000
247#
248# Install hooks:
249# cc1plus is installed elsewhere as part of $(COMPILERS).
250
251# Install the driver program as $(target)-g++ and $(target)-c++, and
252# also as g++ and c++ if native.
253c++.install-common: installdirs
254	-if test "$(enable_as_accelerator)" != "yes" ; then \
255	  rm -f $(DESTDIR)$(bindir)/$(GXX_INSTALL_NAME)$(exeext); \
256	  $(INSTALL_PROGRAM) xg++$(exeext) $(DESTDIR)$(bindir)/$(GXX_INSTALL_NAME)$(exeext); \
257	  chmod a+x $(DESTDIR)$(bindir)/$(GXX_INSTALL_NAME)$(exeext); \
258	  rm -f $(DESTDIR)$(bindir)/$(CXX_INSTALL_NAME)$(exeext); \
259	  ( cd $(DESTDIR)$(bindir) && \
260	    $(LN) $(GXX_INSTALL_NAME)$(exeext) $(CXX_INSTALL_NAME)$(exeext) ); \
261	  if [ -f cc1plus$(exeext) ] ; then \
262	    if [ ! -f g++-cross$(exeext) ] ; then \
263	      rm -f $(DESTDIR)$(bindir)/$(GXX_TARGET_INSTALL_NAME)$(exeext); \
264	      ( cd $(DESTDIR)$(bindir) && \
265		$(LN) $(GXX_INSTALL_NAME)$(exeext) $(GXX_TARGET_INSTALL_NAME)$(exeext) ); \
266	      rm -f $(DESTDIR)$(bindir)/$(CXX_TARGET_INSTALL_NAME)$(exeext); \
267	      ( cd $(DESTDIR)$(bindir) && \
268		$(LN) $(CXX_INSTALL_NAME)$(exeext) $(CXX_TARGET_INSTALL_NAME)$(exeext) ); \
269	    fi ; \
270	  fi; \
271	fi
272
273# We can't use links because not everyone supports them.  So just copy the
274# manpage.
275doc/g++.1: doc/gcc.1
276	cp $< doc/g++.1
277
278c++.install-man: $(DESTDIR)$(man1dir)/$(GXX_INSTALL_NAME)$(man1ext)
279
280$(DESTDIR)$(man1dir)/$(GXX_INSTALL_NAME)$(man1ext): doc/g++.1 installdirs
281	-rm -f $@
282	-$(INSTALL_DATA) $< $@
283	-chmod a-x $@
284
285c++.install-plugin: installdirs
286# We keep the directory structure for files in config and .def files. All
287# other files are flattened to a single directory.
288	headers="$(CP_PLUGIN_HEADERS)"; \
289	for file in $$headers; do \
290	  path=$(srcdir)/cp/$$file; \
291	  dest=$(plugin_includedir)/cp/$$file; \
292	  echo $(INSTALL_DATA) $$path $(DESTDIR)$$dest; \
293	  dir=`dirname $$dest`; \
294	  $(mkinstalldirs) $(DESTDIR)$$dir; \
295	  $(INSTALL_DATA) $$path $(DESTDIR)$$dest; \
296	done
297# Install import library.
298ifeq ($(plugin_implib),yes)
299	$(mkinstalldirs) $(DESTDIR)$(plugin_resourcesdir)
300	$(INSTALL_DATA) cc1plus$(exeext).a $(DESTDIR)/$(plugin_resourcesdir)/cc1plus$(exeext).a
301endif
302
303c++.uninstall:
304	-rm -rf $(DESTDIR)$(bindir)/$(CXX_INSTALL_NAME)$(exeext)
305	-rm -rf $(DESTDIR)$(bindir)/$(GXX_INSTALL_NAME)$(exeext)
306	-rm -rf $(DESTDIR)$(man1dir)/$(GXX_INSTALL_NAME)$(man1ext)
307#
308# Clean hooks:
309# A lot of the ancillary files are deleted by the main makefile.
310# We just have to delete files specific to us.
311
312c++.mostlyclean:
313	-rm -f doc/g++.1
314	-rm -f cp/*$(objext)
315	-rm -f cp/*$(coverageexts)
316	-rm -f xg++$(exeext) g++-cross$(exeext) cc1plus$(exeext) cc1plus.fda
317c++.clean:
318c++.distclean:
319	-rm -f cp/config.status cp/Makefile
320c++.maintainer-clean:
321#
322# Stage hooks:
323# The main makefile has already created stage?/cp.
324
325c++.stage1: stage1-start
326	-mv cp/*$(objext) stage1/cp
327c++.stage2: stage2-start
328	-mv cp/*$(objext) stage2/cp
329c++.stage3: stage3-start
330	-mv cp/*$(objext) stage3/cp
331c++.stage4: stage4-start
332	-mv cp/*$(objext) stage4/cp
333c++.stageprofile: stageprofile-start
334	-mv cp/*$(objext) stageprofile/cp
335c++.stagefeedback: stagefeedback-start
336	-mv cp/*$(objext) stagefeedback/cp
337c++.autostageprofile: stageprofile-start
338	-mv cp/*$(objext) autostageprofile/cp
339c++.autostagefeedback: stagefeedback-start
340	-mv cp/*$(objext) autostagefeedback/cp
341