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# Top level -*- makefile -*- fragment for GNU C++.
# Copyright (C) 1994-2021 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
#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
# <>.
# This file provides the language dependent support in the main Makefile.
# Each language makefile fragment must provide the following targets:
# foo.all.cross, foo.start.encap,,
# foo.install-common, foo.install-man, foo.install-info, foo.install-pdf,
# foo.install-html,, foo.dvi, foo.pdf, foo.html, foo.uninstall,
# foo.mostlyclean, foo.clean, foo.distclean,
# foo.maintainer-clean, foo.stage1, foo.stage2, foo.stage3, foo.stage4
# where `foo' is the name of the language.
# It should also provide rules for:
# - making any compiler driver (eg: g++)
# - the compiler proper (eg: cc1plus)
# - define the names for selecting the language in LANGUAGES.
# Actual names to use when installing a native compiler.
CXX_INSTALL_NAME := $(shell echo c++|sed '$(program_transform_name)')
GXX_INSTALL_NAME := $(shell echo g++|sed '$(program_transform_name)')
CXX_TARGET_INSTALL_NAME := $(target_noncanonical)-$(shell echo c++|sed '$(program_transform_name)')
GXX_TARGET_INSTALL_NAME := $(target_noncanonical)-$(shell echo g++|sed '$(program_transform_name)')
CP_PLUGIN_HEADERS := cp-tree.h cxx-pretty-print.h name-lookup.h type-utils.h operators.def
# Define the names for selecting c++ in LANGUAGES.
# Note that it would be nice to move the dependency on g++
# into the C++ rule, but that needs a little bit of work
# to do the right thing within all.cross.
c++: cc1plus$(exeext)
c++.serial = cc1plus$(exeext)
# Tell GNU make to ignore these if they exist.
.PHONY: c++
CFLAGS-cp/g++spec.o += $(DRIVER_DEFINES)
CFLAGS-cp/module.o += -DHOST_MACHINE=\"$(host)\" \
# In non-release builds, use a date-related module version.
ifneq ($(DEVPHASE_c),)
# Some date's don't grok 'r', if so, simply use today's
# date (don't bootstrap at midnight).
MODULE_VERSION := $(shell date -r $(srcdir)/cp/ '+%y%m%d-%H%M' \
2>/dev/null || date '+%y%m%d-0000' 2>/dev/null || echo 0)
CFLAGS-cp/module.o += -DMODULE_VERSION='($(subst -,,$(MODULE_VERSION))U)'
# Create the compiler driver for g++.
GXX_OBJS = $(GCC_OBJS) cp/g++spec.o
xg++$(exeext): $(GXX_OBJS) $(EXTRA_GCC_OBJS) libcommon-target.a $(LIBDEPS)
$(GXX_OBJS) $(EXTRA_GCC_OBJS) libcommon-target.a \
# Create a version of the g++ driver which calls the cross-compiler.
g++-cross$(exeext): xg++$(exeext)
-rm -f g++-cross$(exeext)
cp xg++$(exeext) g++-cross$(exeext)
# The compiler itself.
# Shared with C front end:
CXX_C_OBJS = attribs.o incpath.o \
# Language-specific object files for C++ and Objective C++.
cp/call.o cp/class.o cp/constexpr.o cp/constraint.o \
cp/coroutines.o cp/cp-gimplify.o \
cp/cp-objcp-common.o cp/cp-ubsan.o \
cp/cvt.o cp/cxx-pretty-print.o \
cp/decl.o cp/decl2.o cp/dump.o \
cp/error.o cp/except.o cp/expr.o \
cp/friend.o cp/init.o \
cp/lambda.o cp/lex.o cp/logic.o \
cp/mangle.o cp/mapper-client.o cp/mapper-resolver.o \
cp/method.o cp/module.o \
cp/name-lookup.o cp/optimize.o \
cp/parser.o cp/pt.o cp/ptree.o \
cp/rtti.o \
cp/search.o cp/semantics.o \
cp/tree.o cp/typeck.o cp/typeck2.o \
cp/vtable-class-hierarchy.o $(CXX_C_OBJS)
ifeq ($(if $(wildcard ../stage_current),$(shell cat \
$(CXX_AND_OBJCXX_OBJS): CFLAGS += -fauto-profile=cc1plus.fda
$(CXX_AND_OBJCXX_OBJS): cc1plus.fda
# Language-specific object files for C++.
CXX_OBJS = cp/cp-lang.o c-family/stub-objc.o $(CXX_AND_OBJCXX_OBJS)
c++_OBJS = $(CXX_OBJS) cc1plus-checksum.o cp/g++spec.o
# Use strict warnings for this front end.
cp-warn = $(STRICT_WARN)
# compute checksum over all object files and the options
# re-use the checksum from the prev-final stage so it passes
# the bootstrap comparison and allows comparing of the cc1 binary
cc1plus-checksum.c : build/genchecksum$(build_exeext) checksum-options \
if [ -f ../stage_final ] \
&& cmp -s ../stage_current ../stage_final; then \
cp ../prev-gcc/cc1plus-checksum.c cc1plus-checksum.c; \
else \
build/genchecksum$(build_exeext) $(CXX_OBJS) $(BACKEND) $(CODYLIB) $(LIBDEPS) \
checksum-options > cc1plus-checksum.c.tmp && \
$(srcdir)/../move-if-change cc1plus-checksum.c.tmp cc1plus-checksum.c; \
cc1plus$(exeext): $(CXX_OBJS) cc1plus-checksum.o $(BACKEND) $(CODYLIB) $(LIBDEPS) $(c++.prev)
@$(call LINK_PROGRESS,$(INDEX.c++),start)
$(CXX_OBJS) cc1plus-checksum.o $(BACKEND) $(CODYLIB) $(NETLIBS) \
@$(call LINK_PROGRESS,$(INDEX.c++),end)
# Special build rule. This is a maintainer rule, that is only
# available when GCC is configured with --enable-maintainer-mode. In
# other cases, it is not available to avoid triggering rebuilds if a
# user has the source checked out with unusual timestamps.
$(srcdir)/cp/cfns.h: $(srcdir)/cp/cfns.gperf
# We keep the rule so that you can still force a rebuild, even if you
# didn't configure GCC with --enable-maintainer-mode, by manually
# deleting the $(srcdir)/cp/cfns.h file.
gperf -o -C -E -k '1-6,$$' -j1 -D -N 'libc_name_p' -L C++ \
$(srcdir)/cp/cfns.gperf --output-file $(srcdir)/cp/cfns.h
cc1plus.fda: ../stage1-gcc/cc1plus$(exeext) ../prev-gcc/$(PERF_DATA)
$(CREATE_GCOV) -binary ../stage1-gcc/cc1plus$(exeext) -gcov cc1plus.fda -profile ../prev-gcc/$(PERF_DATA) -gcov_version 1
# Build hooks:
c++.all.cross: g++-cross$(exeext)
c++.start.encap: xg++$(exeext)
c++.tags: force
cd $(srcdir)/cp; etags -o TAGS.sub *.c *.cc *.h --language=none \
--regex='/DEFTREECODE [(]\([A-Z_]+\)/\1/' cp-tree.def; \
etags --include TAGS.sub --include ../TAGS.sub doc/g++.1
c++.srcman: doc/g++.1
-cp -p $^ $(srcdir)/doc
# C++ selftests
# If C++ is enabled, require the selftests to be run for it
# at each stage of the build:
selftest-c++: s-selftest-c++
# Run the C++ selftests
s-selftest-c++: $(CPP_SELFTEST_DEPS)
$(STAMP) $@
# Convenience method for running C++ selftests under gdb:
.PHONY: selftest-c++-gdb
selftest-c++-gdb: $(CPP_SELFTEST_DEPS)
-wrapper gdb,--args
# Convenience method for running C++ selftests under valgrind:
.PHONY: selftest-c++-valgrind
selftest-c++-valgrind: $(CPP_SELFTEST_DEPS)
-wrapper valgrind,--leak-check=full
# 'make check' in gcc/ looks for check-c++, as do all toplevel C++-related
# check targets. However, our DejaGNU framework requires 'check-g++' as its
# entry point. We feed the former to the latter here.
check-c++ : check-g++
# Run the testsuite in C++17 mode.
check-c++1z: check-c++17
# Run the testsuite in all standard conformance levels.
$(MAKE) RUNTESTFLAGS="$(RUNTESTFLAGS) --stds=98,11,14,17,2a,concepts" check-g++
# Run the testsuite with garbage collection at every opportunity.
$(MAKE) RUNTESTFLAGS="$(RUNTESTFLAGS) --extra_opts,--param,ggc-min-heapsize=0,--param,ggc-min-expand=0,--param,hash-table-verification-limit=10000" \
check-c++-subtargets : check-g++-subtargets
# List of targets that can use the generic check- rule and its // variant.
lang_checks += check-g++
lang_checks_parallelized += check-g++
# For description see the check_$lang_parallelize comment in gcc/
check_g++_parallelize = 10000
# Install hooks:
# cc1plus is installed elsewhere as part of $(COMPILERS).
# Install the driver program as $(target)-g++ and $(target)-c++, and
# also as g++ and c++ if native.
c++.install-common: installdirs
-if test "$(enable_as_accelerator)" != "yes" ; then \
rm -f $(DESTDIR)$(bindir)/$(GXX_INSTALL_NAME)$(exeext); \
$(INSTALL_PROGRAM) xg++$(exeext) $(DESTDIR)$(bindir)/$(GXX_INSTALL_NAME)$(exeext); \
chmod a+x $(DESTDIR)$(bindir)/$(GXX_INSTALL_NAME)$(exeext); \
rm -f $(DESTDIR)$(bindir)/$(CXX_INSTALL_NAME)$(exeext); \
( cd $(DESTDIR)$(bindir) && \
$(LN) $(GXX_INSTALL_NAME)$(exeext) $(CXX_INSTALL_NAME)$(exeext) ); \
if [ -f cc1plus$(exeext) ] ; then \
if [ ! -f g++-cross$(exeext) ] ; then \
rm -f $(DESTDIR)$(bindir)/$(GXX_TARGET_INSTALL_NAME)$(exeext); \
( cd $(DESTDIR)$(bindir) && \
$(LN) $(GXX_INSTALL_NAME)$(exeext) $(GXX_TARGET_INSTALL_NAME)$(exeext) ); \
rm -f $(DESTDIR)$(bindir)/$(CXX_TARGET_INSTALL_NAME)$(exeext); \
( cd $(DESTDIR)$(bindir) && \
$(LN) $(CXX_INSTALL_NAME)$(exeext) $(CXX_TARGET_INSTALL_NAME)$(exeext) ); \
fi ; \
fi; \
# We can't use links because not everyone supports them. So just copy the
# manpage.
doc/g++.1: doc/gcc.1
cp $< doc/g++.1
c++.install-man: $(DESTDIR)$(man1dir)/$(GXX_INSTALL_NAME)$(man1ext)
$(DESTDIR)$(man1dir)/$(GXX_INSTALL_NAME)$(man1ext): doc/g++.1 installdirs
-rm -f $@
-$(INSTALL_DATA) $< $@
-chmod a-x $@
c++.install-plugin: installdirs
# We keep the directory structure for files in config and .def files. All
# other files are flattened to a single directory.
headers="$(CP_PLUGIN_HEADERS)"; \
for file in $$headers; do \
path=$(srcdir)/cp/$$file; \
dest=$(plugin_includedir)/cp/$$file; \
echo $(INSTALL_DATA) $$path $(DESTDIR)$$dest; \
dir=`dirname $$dest`; \
$(mkinstalldirs) $(DESTDIR)$$dir; \
$(INSTALL_DATA) $$path $(DESTDIR)$$dest; \
# Install import library.
ifeq ($(plugin_implib),yes)
$(mkinstalldirs) $(DESTDIR)$(plugin_resourcesdir)
$(INSTALL_DATA) cc1plus$(exeext).a $(DESTDIR)/$(plugin_resourcesdir)/cc1plus$(exeext).a
-rm -rf $(DESTDIR)$(bindir)/$(CXX_INSTALL_NAME)$(exeext)
-rm -rf $(DESTDIR)$(bindir)/$(GXX_INSTALL_NAME)$(exeext)
-rm -rf $(DESTDIR)$(man1dir)/$(GXX_INSTALL_NAME)$(man1ext)
# Clean hooks:
# A lot of the ancillary files are deleted by the main makefile.
# We just have to delete files specific to us.
-rm -f doc/g++.1
-rm -f cp/*$(objext)
-rm -f cp/*$(coverageexts)
-rm -f xg++$(exeext) g++-cross$(exeext) cc1plus$(exeext) cc1plus.fda
-rm -f cp/config.status cp/Makefile
# Stage hooks:
# The main makefile has already created stage?/cp.
c++.stage1: stage1-start
-mv cp/*$(objext) stage1/cp
c++.stage2: stage2-start
-mv cp/*$(objext) stage2/cp
c++.stage3: stage3-start
-mv cp/*$(objext) stage3/cp
c++.stage4: stage4-start
-mv cp/*$(objext) stage4/cp
c++.stageprofile: stageprofile-start
-mv cp/*$(objext) stageprofile/cp
c++.stagefeedback: stagefeedback-start
-mv cp/*$(objext) stagefeedback/cp
c++.autostageprofile: stageprofile-start
-mv cp/*$(objext) autostageprofile/cp
c++.autostagefeedback: stagefeedback-start
-mv cp/*$(objext) autostagefeedback/cp