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Diffstat (limited to 'libstdc++-v3/src/c++26/Makefile.am')
| -rw-r--r-- | libstdc++-v3/src/c++26/Makefile.am | 109 |
1 files changed, 109 insertions, 0 deletions
diff --git a/libstdc++-v3/src/c++26/Makefile.am b/libstdc++-v3/src/c++26/Makefile.am new file mode 100644 index 0000000..000ced1 --- /dev/null +++ b/libstdc++-v3/src/c++26/Makefile.am @@ -0,0 +1,109 @@ +## Makefile for the C++26 sources of the GNU C++ Standard library. +## +## Copyright (C) 1997-2023 Free Software Foundation, Inc. +## +## This file is part of the libstdc++ version 3 distribution. +## Process this file with automake to produce Makefile.in. + +## This file is part of the GNU ISO C++ Library. This library 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. + +## This library 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 this library; see the file COPYING3. If not see +## <http://www.gnu.org/licenses/>. + +include $(top_srcdir)/fragment.am + +# Convenience library for C++26 runtime. +noinst_LTLIBRARIES = libc++26convenience.la + +headers = + +if ENABLE_EXTERN_TEMPLATE +# XTEMPLATE_FLAGS = -fno-implicit-templates +inst_sources = +else +# XTEMPLATE_FLAGS = +inst_sources = +endif + +sources = text_encoding.cc + +vpath % $(top_srcdir)/src/c++26 + + +if GLIBCXX_HOSTED +libc__26convenience_la_SOURCES = $(sources) $(inst_sources) +else +libc__26convenience_la_SOURCES = +endif + +# 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 calls for it. +AM_CXXFLAGS = \ + -std=gnu++26 \ + $(glibcxx_lt_pic_flag) $(glibcxx_compiler_shared_flag) \ + $(XTEMPLATE_FLAGS) $(VTV_CXXFLAGS) \ + $(WARN_CXXFLAGS) $(OPTIMIZE_CXXFLAGS) $(CONFIG_CXXFLAGS) \ + -fimplicit-templates + +AM_MAKEFLAGS = \ + "gxx_include_dir=$(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) \ + $(VTV_CXXLINKFLAGS) \ + $(OPT_LDFLAGS) $(SECTION_LDFLAGS) $(AM_CXXFLAGS) $(LTLDFLAGS) -o $@ |