| ## Makefile for the GNU C++ Filesystem library. |
| ## |
| ## Copyright (C) 2014-2021 Free Software Foundation, Inc. |
| ## |
| ## Process this file with automake to produce Makefile.in. |
| ## |
| ## 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 |
| ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| ## 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 |
| ## <http://www.gnu.org/licenses/>. |
| |
| include $(top_srcdir)/fragment.am |
| |
| toolexeclib_LTLIBRARIES = libstdc++fs.la |
| |
| headers = |
| |
| if ENABLE_DUAL_ABI |
| cxx11_abi_sources = \ |
| cow-dir.cc \ |
| cow-ops.cc \ |
| cow-path.cc |
| else |
| cxx11_abi_sources = |
| endif |
| |
| sources = \ |
| dir.cc \ |
| ops.cc \ |
| path.cc \ |
| ${cxx11_abi_sources} |
| |
| # vpath % $(top_srcdir)/src/filesystem |
| |
| libstdc__fs_la_SOURCES = $(sources) |
| |
| # AM_CXXFLAGS needs to be in each subdirectory 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 call for it. |
| AM_CXXFLAGS = \ |
| $(glibcxx_lt_pic_flag) $(glibcxx_compiler_shared_flag) \ |
| -std=gnu++17 \ |
| $(WARN_CXXFLAGS) $(OPTIMIZE_CXXFLAGS) $(CONFIG_CXXFLAGS) |
| |
| AM_MAKEFLAGS = \ |
| "gxx_include_dir=$(gxx_include_dir)" |
| |
| |
| # Libtool notes |
| |
| # 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 |
| # it out by matching the compiler name in each configuration section |
| # against a prefix of the command line. The problem is that, if the |
| # compiler name and its initial flags stored in the libtool |
| # configuration file don't match those in the command line, libtool |
| # 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. |
| # |
| # 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.) |
| LTCXXCOMPILE = \ |
| $(LIBTOOL) --tag CXX --tag disable-shared \ |
| $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \ |
| --mode=compile $(CXX) $(TOPLEVEL_INCLUDES) \ |
| $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) $(EXTRA_CXX_FLAGS) |
| |
| LTLDFLAGS = $(shell $(SHELL) $(top_srcdir)/../libtool-ldflags $(LDFLAGS)) |
| |
| # 3) We'd have a problem when building the shared libstdc++ object if |
| # the rules automake generates would be used. We cannot allow g++ to |
| # be used since this would add -lstdc++ to the link line which of |
| # 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 --tag disable-shared \ |
| $(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \ |
| --mode=link $(CXX) \ |
| $(OPT_LDFLAGS) $(SECTION_LDFLAGS) $(AM_CXXFLAGS) $(LTLDFLAGS) -o $@ |
| |
| # By adding these files here, automake will remove them for 'make clean' |
| CLEANFILES = stamp-* |
| |