## Makefile for the C++11 sources of the GNU C++ Standard library.
##
-## Copyright (C) 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004, 2005
-## 2006, 2007, 2008, 2009, 2010, 2011, 2012
-## Free Software Foundation, Inc.
+## Copyright (C) 1997-2020 Free Software Foundation, Inc.
##
## This file is part of the libstdc++ version 3 distribution.
## Process this file with automake to produce Makefile.in.
include $(top_srcdir)/fragment.am
-SUBDIRS = c++98 c++11
+if ENABLE_FILESYSTEM_TS
+filesystem_dir = filesystem
+else
+filesystem_dir =
+endif
+
+## Keep this list sync'd with acinclude.m4:GLIBCXX_CONFIGURE.
+SUBDIRS = c++98 c++11 c++17 $(filesystem_dir)
# Cross compiler support.
+if VTV_CYGMIN
+toolexeclib_LTLIBRARIES = libvtv.la libstdc++.la
+else
toolexeclib_LTLIBRARIES = libstdc++.la
+endif
+
+if VTV_CYGMIN
+vtv_stubs.cc:
+ rm -f $@
+ $(LN_S) $(toplevel_srcdir)/libstdc++-v3/libsupc++/vtv_stubs.cc $@
+
+libvtv_la_SOURCES = vtv_stubs.cc
+libvtv_la_LDFLAGS = $(lt_host_flags)
+
+libvtv_la_AM_CXXFLAGS = \
+ $(glibcxx_compiler_pic_flag) \
+ $(XTEMPLATE_FLAGS) \
+ -Wl,-u_vtable_map_vars_start,-u_vtable_map_vars_end \
+ $(WARN_CXXFLAGS) $(OPTIMIZE_CXXFLAGS) $(CONFIG_CXXFLAGS)
+
+libvtv_la_LINK = $(LIBTOOL) --tag=CXX $(AM_LIBTOOLFLAGS) \
+ $(LIBTOOLFLAGS) --mode=link $(CXXLD) $(libvtv_la_AM_CXXFLAGS) \
+ $(CXXFLAGS) $(libvtv_la_LDFLAGS) $(LDFLAGS) -o $@
+endif
+
+vpath % $(top_srcdir)/src/c++98
+vpath % $(top_srcdir)/src/c++11
+vpath % $(top_srcdir)/src/c++17
+if ENABLE_FILESYSTEM_TS
+vpath % $(top_srcdir)/src/filesystem
+endif
-vpath % $(top_srcdir)/src
-vpath % $(top_srcdir)
+if GLIBCXX_LDBL_COMPAT
+ldbl_compat_sources = compatibility-ldbl.cc
+else
+ldbl_compat_sources =
+endif
+
+
+parallel_compat_sources = \
+ compatibility-parallel_list.cc compatibility-parallel_list-2.cc
+
+
+cxx98_sources = \
+ compatibility.cc \
+ compatibility-debug_list.cc \
+ compatibility-debug_list-2.cc \
+ ${ldbl_compat_sources}
+
+cxx11_sources = \
+ compatibility-c++0x.cc \
+ compatibility-atomic-c++0x.cc \
+ compatibility-thread-c++0x.cc \
+ compatibility-chrono.cc \
+ compatibility-condvar.cc
-libstdc___la_SOURCES =
+libstdc___la_SOURCES = $(cxx98_sources) $(cxx11_sources)
libstdc___la_LIBADD = \
$(GLIBCXX_LIBS) \
$(top_builddir)/libsupc++/libsupc++convenience.la \
$(top_builddir)/src/c++98/libc++98convenience.la \
- $(top_builddir)/src/c++11/libc++11convenience.la
+ $(top_builddir)/src/c++11/libc++11convenience.la \
+ $(top_builddir)/src/c++17/libc++17convenience.la
libstdc___la_DEPENDENCIES = \
${version_dep} \
$(top_builddir)/libsupc++/libsupc++convenience.la \
$(top_builddir)/src/c++98/libc++98convenience.la \
- $(top_builddir)/src/c++11/libc++11convenience.la
+ $(top_builddir)/src/c++11/libc++11convenience.la \
+ $(top_builddir)/src/c++17/libc++17convenience.la
libstdc___la_LDFLAGS = \
-version-info $(libtool_VERSION) ${version_arg} -lm
libstdc___la_LINK = $(CXXLINK) $(libstdc___la_LDFLAGS)
+# Use special rules for compatibility-ldbl.cc compilation, as we need to
+# pass -mlong-double-64.
+if GLIBCXX_LDBL_COMPAT
+compatibility-ldbl.lo: compatibility-ldbl.cc
+ $(LTCXXCOMPILE) $(LONG_DOUBLE_COMPAT_FLAGS) -c $<
+compatibility-ldbl.o: compatibility-ldbl.cc
+ $(CXXCOMPILE) $(LONG_DOUBLE_COMPAT_FLAGS) -c $<
+endif
-# AM_CXXFLAGS needs to be in each subdirectory so that it can be
+# Use special rules for C++11 files/objects.
+compatibility-c++0x.lo: compatibility-c++0x.cc
+ $(LTCXXCOMPILE) -std=gnu++11 -c $<
+compatibility-c++0x.o: compatibility-c++0x.cc
+ $(CXXCOMPILE) -std=gnu++11 -c $<
+
+compatibility-atomic-c++0x.lo: compatibility-atomic-c++0x.cc
+ $(LTCXXCOMPILE) -std=gnu++11 -c $<
+compatibility-atomic-c++0x.o: compatibility-atomic-c++0x.cc
+ $(CXXCOMPILE) -std=gnu++11 -c $<
+
+compatibility-thread-c++0x.lo: compatibility-thread-c++0x.cc
+ $(LTCXXCOMPILE) -std=gnu++11 -c $<
+compatibility-thread-c++0x.o: compatibility-thread-c++0x.cc
+ $(CXXCOMPILE) -std=gnu++11 -c $<
+
+compatibility-chrono.lo: compatibility-chrono.cc
+ $(LTCXXCOMPILE) -std=gnu++11 -c $<
+compatibility-chrono.o: compatibility-chrono.cc
+ $(CXXCOMPILE) -std=gnu++11 -c $<
+
+compatibility-condvar.lo: compatibility-condvar.cc
+ $(LTCXXCOMPILE) -std=gnu++11 -c $<
+compatibility-condvar.o: compatibility-condvar.cc
+ $(CXXCOMPILE) -std=gnu++11 -c $<
+
+# A note on compatibility and static libraries.
+#
+# static lib == linked against only this version, should not need compat
+# shared lib == linked against potentially all compat versions
+#
+# Thus, the shared libs have more compat symbols, which can be found
+# segregated in the sources with -D_GLIBCXX_SHARED.
+#
+# In the sub-directories of libsupc++, src/c++98, src/c++11, src/c++17,
+# only -prefer-pic objects are generated for the convenience libraries.
+#
+# In the main src directory, make shared and static objects just for
+# the compat libraries. Shared objects are compiled with -prefer-pic
+# -D_GLIBCXX_SHARED and in the .libs sub-directory, static objects are
+# compiled with -prefer-pic (ie, -fPIC but not -D_GLIBCXX_SHARED) and
+# the main src directory.
+#
+# Why are objects destined for libstdc++.a compiled with -fPIC? First,
+# because -fPIC is not harmful to use for objects destined for static
+# libraries. In addition, using -fPIC will allow the use of static
+# libstdc++.a in the creation of other C++ shared libraries.
+
+# AM_CXXFLAGS needs to be in each sub-directory so that it can be
# modified in a per-library or per-sub-library way. Need to manually
# set this option because CONFIG_CXXFLAGS has to be after
# OPTIMIZE_CXXFLAGS on the compile line so that -O2 can be overridden
# as the occasion calls for it.
AM_CXXFLAGS = \
- $(XTEMPLATE_FLAGS) \
- $(WARN_CXXFLAGS) \
- $(OPTIMIZE_CXXFLAGS) \
- $(CONFIG_CXXFLAGS)
-
+ -std=gnu++98 \
+ $(glibcxx_compiler_pic_flag) \
+ $(XTEMPLATE_FLAGS) $(VTV_CXXFLAGS) \
+ $(WARN_CXXFLAGS) $(OPTIMIZE_CXXFLAGS) $(CONFIG_CXXFLAGS)
-# libstdc++ libtool notes
+# Libtool notes
-# 1) Need to explicitly set LTCXXCOMPILE so that AM_CXXFLAGS is
-# last. (That way, things like -O2 passed down from the toplevel can
-# be overridden by --enable-debug.)
-
-# 2) In general, libtool expects an argument such as `--tag=CXX' when
+# 1) In general, libtool expects an argument such as `--tag=CXX' when
# using the C++ compiler, because that will enable the settings
# detected when C++ support was being configured. However, when no
# such flag is given in the command line, libtool attempts to figure
# can't decide which configuration to use, and it gives up. The
# correct solution is to add `--tag CXX' to LTCXXCOMPILE and maybe
# CXXLINK, just after $(LIBTOOL), so that libtool doesn't have to
-# attempt to infer which configuration to use
-LTCXXCOMPILE = $(LIBTOOL) --tag CXX \
- $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=compile \
- $(CXX) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) \
- $(AM_CXXFLAGS) $(CXXFLAGS)
+# attempt to infer which configuration to use.
+#
+# The second tag argument, `--tag disable-shared` means that libtool
+# only compiles each source once, for static objects. In actuality,
+# glibcxx_lt_pic_flag and glibcxx_compiler_shared_flag are added to
+# the libtool command that is used create the object, which is
+# suitable for shared libraries. The `--tag disable-shared` must be
+# placed after --tag CXX lest things CXX undo the affect of
+# disable-shared.
+
+# 2) Need to explicitly set LTCXXCOMPILE so that EXTRA_CXX_FLAGS is
+# last. (That way, things like -O2 passed down from the toplevel can
+# be overridden by --enable-debug and --enable-cxx-flags.)
+LTCXXCOMPILE = \
+ $(LIBTOOL) --tag CXX \
+ $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
+ --mode=compile $(CXX) $(INCLUDES) \
+ $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) $(EXTRA_CXX_FLAGS)
LTLDFLAGS = $(shell $(SHELL) $(top_srcdir)/../libtool-ldflags $(LDFLAGS))
# course is problematic at this point. So, we get the top-level
# directory to configure libstdc++-v3 to use gcc as the C++
# compilation driver.
-CXXLINK = $(LIBTOOL) --tag CXX $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) --mode=link \
- $(CXX) $(OPT_LDFLAGS) $(SECTION_LDFLAGS) $(AM_CXXFLAGS) $(LTLDFLAGS) -o $@
+CXXLINK = \
+ $(LIBTOOL) --tag CXX \
+ $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
+ --mode=link $(CXX) \
+ $(VTV_CXXLINKFLAGS) \
+ $(OPT_LDFLAGS) $(SECTION_LDFLAGS) $(AM_CXXFLAGS) $(LTLDFLAGS) -o $@
# Symbol versioning for shared libraries.
if ENABLE_SYMVERS
chmod +w $@.tmp
if test "x$(port_specific_symbol_files)" != x; then \
if grep '^# Appended to version file.' \
- $(port_specific_symbol_files) /dev/null > /dev/null 2>&1; then \
+ $(port_specific_symbol_files) > /dev/null 2>&1; then \
cat $(port_specific_symbol_files) >> $@.tmp; \
else \
sed -n '1,/DO NOT DELETE/p' $@.tmp > tmp.top; \
rm tmp.top tmp.bottom; \
fi; \
fi
- $(EGREP) -v '#(#| |$$)' $@.tmp | \
- $(COMPILE) -E -P -include config.h - > $@ || (rm -f $@ ; exit 1)
+ $(EGREP) -v '^[ ]*#(#| |$$)' $@.tmp | \
+ $(CC) -E -P -include $(CONFIG_HEADER) - > $@ || (rm -f $@ ; exit 1)
rm -f $@.tmp
CLEANFILES = libstdc++-symbols.ver
# Control additional build primary rules.
-# EXTRA_LTLIBRARIES =
all-once: libstdc++convenience.la $(STAMP_DEBUG)
install-data-once: $(STAMP_INSTALL_DEBUG)
# Take care to fix all possibly-relative paths.
debugdir = ${glibcxx_builddir}/src/debug
stamp-debug:
- if test ! -d ${debugdir}; then \
+ if test ! -d ${debugdir} || test ! -f ${debugdir}/Makefile ; then \
mkdir -p ${debugdir}; \
for d in $(SUBDIRS); do mkdir -p ${debugdir}/$$d; done; \
(cd ${debugdir}; \
mv Makefile Makefile.tmp; \
sed -e 's,all-local: all-once,all-local:,' \
-e 's,install-data-local: install-data-once,install-data-local:,' \
- -e 's,src/c,src/debug/c,' \
+ -e '/vpath/!s,src/c,src/debug/c,' \
< Makefile.tmp > Makefile ; \
+ rm -f Makefile.tmp ; \
$(MAKE) CXXFLAGS='$(DEBUG_FLAGS)' \
toolexeclibdir=$(glibcxx_toolexeclibdir)/debug all) ;
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