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68c2e9e923
This fixes the --disable-hosted-libstdcxx build so that it works with --without-headers. Currently you need to also use --with-newlib, which is confusing for users who aren't actually using newlib. The AM_PROG_LIBTOOL checks are currently skipped for --with-newlib and --with-avrlibc builds, with this change they are also skipped when using --without-headers. It would be nice if using --disable-hosted-libstdcxx automatically skipped those checks, but GLIBCXX_ENABLE_HOSTED comes too late to make the AM_PROG_LIBTOOL checks depend on $is_hosted. The checks for EOF, SEEK_CUR etc. cause the build to fail if there is no <stdio.h> available. Unlike most headers, which get a HAVE_FOO_H macro, <stdio.h> is in autoconf's default includes, so every check tries to include it unconditionally. This change skips those checks for freestanding builds. Similarly, the checks for <stdint.h> types done by GCC_HEADER_STDINT try to include <stdio.h> and fail for --without-headers builds. This change skips the use of GCC_HEADER_STDINT for freestanding. We can probably stop using GCC_HEADER_STDINT entirely, since only one file uses the gstdint.h header that is generated, and that could easily be changed to use <stdint.h> instead. That can wait for stage 1. We also need to skip the GLIBCXX_CROSSCONFIG stage if --without-headers was used, since we don't have any of the functions it deals with. The end result of the changes above is that it should not be necessary for a --disable-hosted-libstdcxx --without-headers build to also use --with-newlib. Finally, compile libsupc++ with -ffreestanding when --without-headers is used, so that <stdint.h> will use <gcc-stdint.h> instead of expecting it to come from libc. libstdc++-v3/ChangeLog: PR libstdc++/103866 * acinclude.m4 (GLIBCXX_COMPUTE_STDIO_INTEGER_CONSTANTS): Do nothing for freestanding builds. (GLIBCXX_ENABLE_HOSTED): Define FREESTANDING_FLAGS. * configure.ac: Do not use AC_LIBTOOL_DLOPEN when configured with --without-headers. Do not use GCC_HEADER_STDINT for freestanding builds. * libsupc++/Makefile.am (HOSTED_CXXFLAGS): Use -ffreestanding for freestanding builds. * configure: Regenerate. * Makefile.in: Regenerate. * doc/Makefile.in: Regenerate. * include/Makefile.in: Regenerate. * libsupc++/Makefile.in: Regenerate. * po/Makefile.in: Regenerate. * python/Makefile.in: Regenerate. * src/Makefile.in: Regenerate. * src/c++11/Makefile.in: Regenerate. * src/c++17/Makefile.in: Regenerate. * src/c++20/Makefile.in: Regenerate. * src/c++98/Makefile.in: Regenerate. * src/filesystem/Makefile.in: Regenerate. * testsuite/Makefile.in: Regenerate.
253 lines
7.8 KiB
Makefile
253 lines
7.8 KiB
Makefile
## Makefile for the GNU C++ Support library.
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##
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## Copyright (C) 2000-2022 Free Software Foundation, Inc.
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##
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## Process this file with automake to produce Makefile.in.
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##
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## This file is part of GCC.
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##
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## GCC is free software; you can redistribute it and/or modify
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## it under the terms of the GNU General Public License as published by
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## the Free Software Foundation; either version 3, or (at your option)
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## any later version.
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##
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## GCC is distributed in the hope that it will be useful,
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## but WITHOUT ANY WARRANTY; without even the implied warranty of
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## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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## GNU General Public License for more details.
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##
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## You should have received a copy of the GNU General Public License
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## along with GCC; see the file COPYING3. If not see
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## <http://www.gnu.org/licenses/>.
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include $(top_srcdir)/fragment.am
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# Need this library to both be part of libstdc++.a, and installed
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# separately too.
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# 1) separate libsupc++.la
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toolexeclib_LTLIBRARIES = libsupc++.la
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# 2) integrated libsupc++convenience.la that is to be a part of libstdc++.a
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noinst_LTLIBRARIES = libsupc++convenience.la
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std_HEADERS = \
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compare cxxabi.h exception initializer_list new typeinfo
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bits_HEADERS = \
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atomic_lockfree_defines.h cxxabi_forced.h \
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exception_defines.h exception_ptr.h hash_bytes.h nested_exception.h exception.h cxxabi_init_exception.h
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headers = $(std_HEADERS) $(bits_HEADERS)
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if GLIBCXX_HOSTED
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c_sources = \
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cp-demangle.c
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endif
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sources = \
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array_type_info.cc \
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atexit_arm.cc \
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atexit_thread.cc \
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atomicity.cc \
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bad_alloc.cc \
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bad_array_length.cc \
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bad_array_new.cc \
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bad_cast.cc \
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bad_typeid.cc \
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class_type_info.cc \
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del_op.cc \
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del_ops.cc \
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del_opnt.cc \
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del_opv.cc \
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del_opvs.cc \
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del_opvnt.cc \
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dyncast.cc \
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eh_alloc.cc \
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eh_arm.cc \
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eh_aux_runtime.cc \
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eh_call.cc \
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eh_catch.cc \
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eh_exception.cc \
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eh_globals.cc \
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eh_personality.cc \
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eh_ptr.cc \
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eh_term_handler.cc \
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eh_terminate.cc \
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eh_tm.cc \
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eh_throw.cc \
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eh_type.cc \
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eh_unex_handler.cc \
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enum_type_info.cc \
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function_type_info.cc \
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fundamental_type_info.cc \
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guard.cc \
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guard_error.cc \
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hash_bytes.cc \
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nested_exception.cc \
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new_handler.cc \
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new_op.cc \
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new_opnt.cc \
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new_opv.cc \
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new_opvnt.cc \
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new_opa.cc \
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new_opant.cc \
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new_opva.cc \
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new_opvant.cc \
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del_opa.cc \
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del_opant.cc \
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del_opsa.cc \
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del_opva.cc \
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del_opvant.cc \
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del_opvsa.cc \
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pbase_type_info.cc \
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pmem_type_info.cc \
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pointer_type_info.cc \
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pure.cc \
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si_class_type_info.cc \
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tinfo.cc \
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tinfo2.cc \
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vec.cc \
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vmi_class_type_info.cc \
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vterminate.cc
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if ENABLE_VTABLE_VERIFY
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if !VTV_CYGMIN
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vtv_sources = \
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vtv_stubs.cc
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endif
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endif
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libsupc___la_SOURCES = $(sources) $(c_sources) $(vtv_sources)
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libsupc__convenience_la_SOURCES = $(sources) $(c_sources) $(vtv_sources)
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cp-demangle.c:
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rm -f $@
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$(LN_S) $(toplevel_srcdir)/libiberty/cp-demangle.c $@
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cp-demangle.lo: cp-demangle.c
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$(LTCOMPILE) -DIN_GLIBCPP_V3 -Wno-error -c $<
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cp-demangle.o: cp-demangle.c
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$(C_COMPILE) -DIN_GLIBCPP_V3 -Wno-error -c $<
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atomicity_file = ${glibcxx_srcdir}/$(ATOMICITY_SRCDIR)/atomicity.h
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atomicity.cc: ${atomicity_file}
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$(LN_S) ${atomicity_file} ./atomicity.cc || true
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# AM_CXXFLAGS needs to be in each subdirectory so that it can be
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# modified in a per-library or per-sub-library way. Need to manually
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# set this option because CONFIG_CXXFLAGS has to be after
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# OPTIMIZE_CXXFLAGS on the compile line so that -O2 can be overridden
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# as the occasion call for it.
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AM_CXXFLAGS = \
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$(glibcxx_lt_pic_flag) $(glibcxx_compiler_shared_flag) \
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$(XTEMPLATE_FLAGS) $(FREESTANDING_FLAGS) \
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$(WARN_CXXFLAGS) $(OPTIMIZE_CXXFLAGS) $(CONFIG_CXXFLAGS)
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AM_MAKEFLAGS = \
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"gxx_include_dir=$(gxx_include_dir)"
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# Use special rules for pulling things out of libiberty. These
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# objects should be compiled with the "C" compiler, not the C++
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# compiler, and also should not use the C++ includes.
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C_INCLUDES = -I.. -I$(toplevel_srcdir)/libiberty -I$(toplevel_srcdir)/include
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C_COMPILE = \
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$(CC) $(DEFS) $(C_INCLUDES) \
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$(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) $(EXTRA_CFLAGS)
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# LTCOMPILE is copied from LTCXXCOMPILE below.
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LTCOMPILE = $(LIBTOOL) --tag CC --tag disable-shared $(LIBTOOLFLAGS) --mode=compile \
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$(CC) $(DEFS) $(C_INCLUDES) \
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$(glibcxx_lt_pic_flag) $(glibcxx_compiler_shared_flag) \
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$(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS) $(EXTRA_CFLAGS)
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# Libtool notes
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# 1) In general, libtool expects an argument such as `--tag=CXX' when
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# using the C++ compiler, because that will enable the settings
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# detected when C++ support was being configured. However, when no
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# such flag is given in the command line, libtool attempts to figure
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# it out by matching the compiler name in each configuration section
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# against a prefix of the command line. The problem is that, if the
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# compiler name and its initial flags stored in the libtool
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# configuration file don't match those in the command line, libtool
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# can't decide which configuration to use, and it gives up. The
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# correct solution is to add `--tag CXX' to LTCXXCOMPILE and maybe
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# CXXLINK, just after $(LIBTOOL), so that libtool doesn't have to
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# attempt to infer which configuration to use.
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#
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# The second tag argument, `--tag disable-shared` means that libtool
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# only compiles each source once, for static objects. In actuality,
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# glibcxx_lt_pic_flag and glibcxx_compiler_shared_flag are added to
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# the libtool command that is used create the object, which is
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# suitable for shared libraries. The `--tag disable-shared` must be
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# placed after --tag CXX lest things CXX undo the affect of
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# disable-shared.
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# 2) Need to explicitly set LTCXXCOMPILE so that EXTRA_CXX_FLAGS is
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# last. (That way, things like -O2 passed down from the toplevel can
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# be overridden by --enable-debug.)
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LTCXXCOMPILE = \
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$(LIBTOOL) --tag CXX --tag disable-shared \
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$(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
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--mode=compile $(CXX) $(TOPLEVEL_INCLUDES) \
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$(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CXXFLAGS) $(CXXFLAGS) $(EXTRA_CXX_FLAGS)
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LTLDFLAGS = $(shell $(SHELL) $(top_srcdir)/../libtool-ldflags $(LDFLAGS))
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# 3) We'd have a problem when building the shared libstdc++ object if
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# the rules automake generates would be used. We cannot allow g++ to
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# be used since this would add -lstdc++ to the link line which of
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# course is problematic at this point. So, we get the top-level
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# directory to configure libstdc++-v3 to use gcc as the C++
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# compilation driver.
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CXXLINK = \
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$(LIBTOOL) --tag CXX --tag disable-shared \
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$(AM_LIBTOOLFLAGS) $(LIBTOOLFLAGS) \
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--mode=link $(CXX) \
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$(OPT_LDFLAGS) $(SECTION_LDFLAGS) $(AM_CXXFLAGS) $(LTLDFLAGS) -o $@
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# Install notes
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# We have to have rules modified from the default to counteract SUN make
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# prepending each of $(*_HEADERS) with VPATH below.
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stddir = $(gxx_include_dir)
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bitsdir = $(gxx_include_dir)/bits
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install-stdHEADERS: $(std_HEADERS)
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@$(NORMAL_INSTALL)
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$(mkinstalldirs) $(DESTDIR)$(stddir)
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@list='$(std_HEADERS)'; for p in $$list; do \
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q=`echo $$p | sed -e 's,.*/,,'`; \
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if test -f "$$p"; then d= ; else d="$(srcdir)/"; fi; \
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echo " $(INSTALL_DATA) $$d$$p $(DESTDIR)$(stddir)/$$q"; \
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$(INSTALL_DATA) $$d$$p $(DESTDIR)$(stddir)/$$q; \
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done
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install-bitsHEADERS: $(bits_HEADERS)
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@$(NORMAL_INSTALL)
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$(mkinstalldirs) $(DESTDIR)$(bitsdir)
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@list='$(bits_HEADERS)'; for p in $$list; do \
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q=`echo $$p | sed -e 's,.*/,,'`; \
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if test -f "$$p"; then d= ; else d="$(srcdir)/"; fi; \
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echo " $(INSTALL_DATA) $$d$$p $(DESTDIR)$(bitsdir)/$$q"; \
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$(INSTALL_DATA) $$d$$p $(DESTDIR)$(bitsdir)/$$q; \
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done
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uninstall-stdHEADERS:
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@$(NORMAL_UNINSTALL)
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list='$(std_HEADERS)'; for p in $$list; do \
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q=`echo $$p | sed -e 's,.*/,,'`; \
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rm -f $(DESTDIR)$(stddir)/$$q; \
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done
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uninstall-bitsHEADERS:
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@$(NORMAL_UNINSTALL)
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list='$(bits_HEADERS)'; for p in $$list; do \
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q=`echo $$p | sed -e 's,.*/,,'`; \
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rm -f $(DESTDIR)$(bitsdir)/$$q; \
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done
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# By adding these files here, automake will remove them for 'make clean'
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CLEANFILES = stamp-*
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