1## Makefile for the C++11 sources of the GNU C++ Standard library.
2##
3## Copyright (C) 1997-2020 Free Software Foundation, Inc.
4##
5## This file is part of the libstdc++ version 3 distribution.
6## Process this file with automake to produce Makefile.in.
7
8## This file is part of the GNU ISO C++ Library.  This library is free
9## software; you can redistribute it and/or modify it under the
10## terms of the GNU General Public License as published by the
11## Free Software Foundation; either version 3, or (at your option)
12## any later version.
13
14## This library is distributed in the hope that it will be useful,
15## but WITHOUT ANY WARRANTY; without even the implied warranty of
16## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17## GNU General Public License for more details.
18
19## You should have received a copy of the GNU General Public License along
20## with this library; see the file COPYING3.  If not see
21## <http://www.gnu.org/licenses/>.
22
23include $(top_srcdir)/fragment.am
24
25if ENABLE_FILESYSTEM_TS
26filesystem_dir = filesystem
27else
28filesystem_dir =
29endif
30
31## Keep this list sync'd with acinclude.m4:GLIBCXX_CONFIGURE.
32SUBDIRS = c++98 c++11 c++17 $(filesystem_dir)
33
34# Cross compiler support.
35if VTV_CYGMIN
36toolexeclib_LTLIBRARIES = libvtv.la libstdc++.la
37else
38toolexeclib_LTLIBRARIES = libstdc++.la
39endif
40
41if VTV_CYGMIN
42vtv_stubs.cc:
43	rm -f $@
44	$(LN_S) $(toplevel_srcdir)/libstdc++-v3/libsupc++/vtv_stubs.cc $@
45
46libvtv_la_SOURCES = vtv_stubs.cc
47libvtv_la_LDFLAGS = $(lt_host_flags)
48
49libvtv_la_AM_CXXFLAGS = \
50	$(glibcxx_compiler_pic_flag) \
51	$(XTEMPLATE_FLAGS) \
52	-Wl,-u_vtable_map_vars_start,-u_vtable_map_vars_end \
53	$(WARN_CXXFLAGS) $(OPTIMIZE_CXXFLAGS) $(CONFIG_CXXFLAGS)
54
55libvtv_la_LINK = $(LIBTOOL) --tag=CXX $(AM_LIBTOOLFLAGS) \
56	$(LIBTOOLFLAGS) --mode=link $(CXXLD) $(libvtv_la_AM_CXXFLAGS) \
57	$(CXXFLAGS) $(libvtv_la_LDFLAGS) $(LDFLAGS) -o $@
58endif
59
60vpath % $(top_srcdir)/src/c++98
61vpath % $(top_srcdir)/src/c++11
62vpath % $(top_srcdir)/src/c++17
63if ENABLE_FILESYSTEM_TS
64vpath % $(top_srcdir)/src/filesystem
65endif
66
67if GLIBCXX_LDBL_COMPAT
68ldbl_compat_sources = compatibility-ldbl.cc
69else
70ldbl_compat_sources =
71endif
72
73
74parallel_compat_sources = \
75	compatibility-parallel_list.cc  compatibility-parallel_list-2.cc
76
77
78cxx98_sources = \
79	compatibility.cc \
80	compatibility-debug_list.cc \
81	compatibility-debug_list-2.cc \
82	${ldbl_compat_sources}
83
84cxx11_sources = \
85	compatibility-c++0x.cc \
86	compatibility-atomic-c++0x.cc \
87	compatibility-thread-c++0x.cc \
88	compatibility-chrono.cc \
89	compatibility-condvar.cc
90
91libstdc___la_SOURCES = $(cxx98_sources) $(cxx11_sources)
92
93libstdc___la_LIBADD = \
94	$(GLIBCXX_LIBS) \
95	$(top_builddir)/libsupc++/libsupc++convenience.la \
96	$(top_builddir)/src/c++98/libc++98convenience.la \
97	$(top_builddir)/src/c++11/libc++11convenience.la \
98	$(top_builddir)/src/c++17/libc++17convenience.la
99
100libstdc___la_DEPENDENCIES = \
101	${version_dep} \
102	$(top_builddir)/libsupc++/libsupc++convenience.la \
103	$(top_builddir)/src/c++98/libc++98convenience.la \
104	$(top_builddir)/src/c++11/libc++11convenience.la \
105	$(top_builddir)/src/c++17/libc++17convenience.la
106
107libstdc___la_LDFLAGS = \
108	-version-info $(libtool_VERSION) ${version_arg} -lm
109
110libstdc___la_LINK = $(CXXLINK) $(libstdc___la_LDFLAGS)
111
112# Use special rules for compatibility-ldbl.cc compilation, as we need to
113# pass -mlong-double-64.
114if GLIBCXX_LDBL_COMPAT
115compatibility-ldbl.lo: compatibility-ldbl.cc
116	$(LTCXXCOMPILE) $(LONG_DOUBLE_COMPAT_FLAGS) -c $<
117compatibility-ldbl.o: compatibility-ldbl.cc
118	$(CXXCOMPILE) $(LONG_DOUBLE_COMPAT_FLAGS) -c $<
119endif
120
121# Use special rules for C++11 files/objects.
122compatibility-c++0x.lo: compatibility-c++0x.cc
123	$(LTCXXCOMPILE) -std=gnu++11 -c $<
124compatibility-c++0x.o: compatibility-c++0x.cc
125	$(CXXCOMPILE) -std=gnu++11 -c $<
126
127compatibility-atomic-c++0x.lo: compatibility-atomic-c++0x.cc
128	$(LTCXXCOMPILE) -std=gnu++11 -c $<
129compatibility-atomic-c++0x.o: compatibility-atomic-c++0x.cc
130	$(CXXCOMPILE) -std=gnu++11 -c $<
131
132compatibility-thread-c++0x.lo: compatibility-thread-c++0x.cc
133	$(LTCXXCOMPILE) -std=gnu++11 -c $<
134compatibility-thread-c++0x.o: compatibility-thread-c++0x.cc
135	$(CXXCOMPILE) -std=gnu++11 -c $<
136
137compatibility-chrono.lo: compatibility-chrono.cc
138	$(LTCXXCOMPILE) -std=gnu++11 -c $<
139compatibility-chrono.o: compatibility-chrono.cc
140	$(CXXCOMPILE) -std=gnu++11 -c $<
141
142compatibility-condvar.lo: compatibility-condvar.cc
143	$(LTCXXCOMPILE) -std=gnu++11 -c $<
144compatibility-condvar.o: compatibility-condvar.cc
145	$(CXXCOMPILE) -std=gnu++11 -c $<
146
147# A note on compatibility and static libraries.
148#
149# static lib == linked against only this version, should not need compat
150# shared lib == linked against potentially all compat versions
151#
152# Thus, the shared libs have more compat symbols, which can be found
153# segregated in the sources with -D_GLIBCXX_SHARED.
154#
155# In the sub-directories of libsupc++, src/c++98, src/c++11, src/c++17,
156# only -prefer-pic objects are generated for the convenience libraries.
157#
158# In the main src directory, make shared and static objects just for
159# the compat libraries. Shared objects are compiled with -prefer-pic
160# -D_GLIBCXX_SHARED and in the .libs sub-directory, static objects are
161# compiled with -prefer-pic (ie, -fPIC but not -D_GLIBCXX_SHARED) and
162# the main src directory.
163#
164# Why are objects destined for libstdc++.a compiled with -fPIC? First,
165# because -fPIC is not harmful to use for objects destined for static
166# libraries. In addition, using -fPIC will allow the use of static
167# libstdc++.a in the creation of other C++ shared libraries.
168
169# AM_CXXFLAGS needs to be in each sub-directory so that it can be
170# modified in a per-library or per-sub-library way.  Need to manually
171# set this option because CONFIG_CXXFLAGS has to be after
172# OPTIMIZE_CXXFLAGS on the compile line so that -O2 can be overridden
173# as the occasion calls for it.
174AM_CXXFLAGS = \
175	-std=gnu++98 \
176	$(glibcxx_compiler_pic_flag) \
177	$(XTEMPLATE_FLAGS) $(VTV_CXXFLAGS) \
178	$(WARN_CXXFLAGS) $(OPTIMIZE_CXXFLAGS) $(CONFIG_CXXFLAGS)
179
180# Libtool notes
181
182# 1) In general, libtool expects an argument such as `--tag=CXX' when
183# using the C++ compiler, because that will enable the settings
184# detected when C++ support was being configured.  However, when no
185# such flag is given in the command line, libtool attempts to figure
186# it out by matching the compiler name in each configuration section
187# against a prefix of the command line.  The problem is that, if the
188# compiler name and its initial flags stored in the libtool
189# configuration file don't match those in the command line, libtool
190# can't decide which configuration to use, and it gives up.  The
191# correct solution is to add `--tag CXX' to LTCXXCOMPILE and maybe
192# CXXLINK, just after $(LIBTOOL), so that libtool doesn't have to
193# attempt to infer which configuration to use.
194#
195# The second tag argument, `--tag disable-shared` means that libtool
196# only compiles each source once, for static objects. In actuality,
197# glibcxx_lt_pic_flag and glibcxx_compiler_shared_flag are added to
198# the libtool command that is used create the object, which is
199# suitable for shared libraries.  The `--tag disable-shared` must be
200# placed after --tag CXX lest things CXX undo the affect of
201# disable-shared.
202
203# 2) Need to explicitly set LTCXXCOMPILE so that EXTRA_CXX_FLAGS is
204# last. (That way, things like -O2 passed down from the toplevel can
205# be overridden by --enable-debug and --enable-cxx-flags.)
206LTCXXCOMPILE = \
207	$(LIBTOOL) --tag CXX \
208	$(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
209	--mode=compile $(CXX) $(INCLUDES) \
210	$(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) $(EXTRA_CXX_FLAGS)
211
212LTLDFLAGS = $(shell $(SHELL) $(top_srcdir)/../libtool-ldflags $(LDFLAGS))
213
214# 3) We'd have a problem when building the shared libstdc++ object if
215# the rules automake generates would be used.  We cannot allow g++ to
216# be used since this would add -lstdc++ to the link line which of
217# course is problematic at this point.  So, we get the top-level
218# directory to configure libstdc++-v3 to use gcc as the C++
219# compilation driver.
220CXXLINK = \
221	$(LIBTOOL) --tag CXX \
222	$(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
223	--mode=link $(CXX) \
224	$(VTV_CXXLINKFLAGS) \
225	$(OPT_LDFLAGS) $(SECTION_LDFLAGS) $(AM_CXXFLAGS) \
226	$(LTLDFLAGS) $(LTLIBICONV) \
227	-o $@
228
229# Symbol versioning for shared libraries.
230if ENABLE_SYMVERS
231libstdc++-symbols.ver:  ${glibcxx_srcdir}/$(SYMVER_FILE) \
232		$(port_specific_symbol_files)
233	cp ${glibcxx_srcdir}/$(SYMVER_FILE) $@.tmp
234	chmod +w $@.tmp
235	if test "x$(port_specific_symbol_files)" != x; then \
236	  if grep '^# Appended to version file.' \
237	       $(port_specific_symbol_files) > /dev/null 2>&1; then \
238	    cat $(port_specific_symbol_files) >> $@.tmp; \
239	  else \
240	    sed -n '1,/DO NOT DELETE/p' $@.tmp > tmp.top; \
241	    sed -n '/DO NOT DELETE/,$$p' $@.tmp > tmp.bottom; \
242	    cat tmp.top $(port_specific_symbol_files) tmp.bottom > $@.tmp; \
243	    rm tmp.top tmp.bottom; \
244	  fi; \
245	fi
246	$(EGREP) -v '^[ 	]*#(#| |$$)' $@.tmp | \
247	  $(CC) -E -P -include $(CONFIG_HEADER) - > $@ || (rm -f $@ ; exit 1)
248	rm -f $@.tmp
249
250CLEANFILES = libstdc++-symbols.ver
251
252if ENABLE_SYMVERS_GNU
253version_arg = -Wl,--version-script=libstdc++-symbols.ver
254version_dep = libstdc++-symbols.ver
255endif
256if ENABLE_SYMVERS_GNU_NAMESPACE
257version_arg = -Wl,--version-script=libstdc++-symbols.ver
258version_dep = libstdc++-symbols.ver
259endif
260if ENABLE_SYMVERS_SUN
261version_arg = -Wl,-M,libstdc++-symbols.ver-sun
262version_dep = libstdc++-symbols.ver-sun
263libstdc++-symbols.ver-sun : libstdc++-symbols.ver \
264		$(toplevel_srcdir)/contrib/make_sunver.pl \
265		$(libstdc___la_OBJECTS) $(libstdc___la_LIBADD)
266	CXXFILT="$(CXXFILT)"; export CXXFILT; \
267	perl $(toplevel_srcdir)/contrib/make_sunver.pl \
268	  libstdc++-symbols.ver \
269	  $(libstdc___la_OBJECTS:%.lo=.libs/%.o) \
270	 `echo $(libstdc___la_LIBADD) | \
271	    sed 's,/\([^/.]*\)\.la,/.libs/\1.a,g'` \
272	 > $@ || (rm -f $@ ; exit 1)
273endif
274if ENABLE_SYMVERS_DARWIN
275version_arg = -Wl,-exported_symbols_list,libstdc++-symbols.explist
276version_dep = libstdc++-symbols.explist
277libstdc++-symbols.explist : libstdc++-symbols.ver \
278		${glibcxx_srcdir}/scripts/make_exports.pl \
279		$(libstdc___la_OBJECTS) $(libstdc___la_LIBADD)
280	perl ${glibcxx_srcdir}/scripts/make_exports.pl \
281	  libstdc++-symbols.ver \
282	  $(libstdc___la_OBJECTS:%.lo=.libs/%.o) \
283	 `echo $(libstdc___la_LIBADD) | \
284	    sed 's,/\([^/.]*\)\.la,/.libs/\1.a,g'` \
285	 > $@ || (rm -f $@ ; exit 1)
286endif
287
288CLEANFILES += $(version_dep)
289else
290version_arg =
291version_dep =
292endif
293
294
295# Control additional build primary rules.
296all-once: libstdc++convenience.la $(STAMP_DEBUG)
297install-data-once: $(STAMP_INSTALL_DEBUG)
298
299all-local: all-once
300install-data-local: install-data-once
301clean-local:
302	rm -rf libstdc++convenience.la stamp* $(CLEAN_DEBUG)
303
304# Make a non-installed convenience library, so that --disable-static
305# may work.
306libstdc++convenience.la: $(toolexeclib_LTLIBRARIES)
307	$(CXXLINK) $(libstdc___la_LIBADD) $(LIBS); \
308	if test ! -f .libs/libstdc++.a; then \
309	  cp .libs/libstdc++convenience.a .libs/libstdc++.a; \
310	fi; \
311	echo `date` > stamp-libstdc++convenience;
312
313# Added rules.
314# 1 debug library
315# 2 supra-convenience library
316if GLIBCXX_BUILD_DEBUG
317STAMP_DEBUG = build-debug
318STAMP_INSTALL_DEBUG = install-debug
319CLEAN_DEBUG = debug
320else
321STAMP_DEBUG =
322STAMP_INSTALL_DEBUG =
323CLEAN_DEBUG =
324endif
325
326# Build a debug variant.
327# Take care to fix all possibly-relative paths.
328debugdir = ${glibcxx_builddir}/src/debug
329stamp-debug:
330	if test ! -d ${debugdir} || test ! -f ${debugdir}/Makefile ; then \
331	  mkdir -p ${debugdir}; \
332	  for d in $(SUBDIRS); do mkdir -p  ${debugdir}/$$d; done; \
333	  (cd ${debugdir}; \
334	  sed -e 's/top_builddir = \.\./top_builddir = ..\/../' \
335	      -e 's/top_build_prefix = \.\./top_build_prefix = ..\/../' \
336	      -e 's/srcdir = \.\./srcdir = ..\/../' \
337	      -e 's/VPATH = \.\./VPATH = ..\/../' \
338	      -e 's/glibcxx_basedir = \.\./glibcxx_basedir = ..\/../' \
339	      -e 's/MKDIR_P = \.\./MKDIR_P = ..\/../' \
340	  < ../Makefile > Makefile ; \
341	  for d in . $(SUBDIRS); do \
342	  sed -e 's/top_builddir = \.\./top_builddir = ..\/../' \
343	      -e 's/top_build_prefix = \.\./top_build_prefix = ..\/../' \
344	      -e 's/srcdir = \.\./srcdir = ..\/../' \
345	      -e 's/VPATH = \.\./VPATH = ..\/../' \
346	      -e 's/glibcxx_basedir = \.\./glibcxx_basedir = ..\/../' \
347	      -e 's/MKDIR_P = \.\./MKDIR_P = ..\/../' \
348	  < ../$$d/Makefile > $$d/Makefile ; \
349	  done) ; \
350	fi; \
351	echo `date` > stamp-debug;
352
353build-debug: stamp-debug
354	  (cd ${debugdir}; \
355	  mv Makefile Makefile.tmp; \
356	  sed -e 's,all-local: all-once,all-local:,' \
357	      -e 's,install-data-local: install-data-once,install-data-local:,' \
358	      -e '/vpath/!s,src/c,src/debug/c,' \
359	  < Makefile.tmp > Makefile ; \
360	  rm -f Makefile.tmp ; \
361	  $(MAKE) CXXFLAGS='$(DEBUG_FLAGS)' \
362	  toolexeclibdir=$(glibcxx_toolexeclibdir)/debug all) ;
363
364# Install debug library.
365install-debug: build-debug
366	(cd ${debugdir} && $(MAKE) CXXFLAGS='$(DEBUG_FLAGS)' \
367	toolexeclibdir=$(glibcxx_toolexeclibdir)/debug install) ;
368