5dbab7b3f4
When libphobos is configured with --enable-cet, this adds extra fields to the Fiber class to support the ucontext_t fallback implementation. These fields get omitted when compiling user code unless they also used `-fversion=CET' to build their project, which resulted in data being overwritten from within swapcontext(). On reviewing the ucontext_t definitions, it was found that the shadow stack fields were missing, and the struct size didn't match up on X32. This has been fixed in upstream druntime and merged down here. Reviewed-on: https://github.com/dlang/druntime/pull/3293 libphobos/ChangeLog: PR d/98025 * Makefile.in: Regenerate. * configure: Regenerate. * configure.ac (DCFG_ENABLE_CET): Substitute. * libdruntime/MERGE: Merge upstream druntime 0fe7974c. * libdruntime/Makefile.in: Regenerate. * libdruntime/core/thread.d: Import gcc.config. (class Fiber): Add ucontext_t fields when GNU_Enable_CET is true. * libdruntime/gcc/config.d.in (GNU_Enable_CET): Define. * src/Makefile.in: Regenerate. * testsuite/Makefile.in: Regenerate.
308 lines
9.7 KiB
Plaintext
308 lines
9.7 KiB
Plaintext
# Process this file with autoconf to produce a configure script.
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# Copyright (C) 2006-2020 Free Software Foundation, Inc.
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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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# This requires that you have your environment set-up to use explicit
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# versions of automake and autoconf.
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#
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# export ACLOCAL=/usr/bin/aclocal-1.15
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# export AUTOMAKE=/usr/bin/automake-1.15
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# export AUTOM4TE=/usr/bin/autom4te2.69
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# export AUTOCONF=/usr/bin/autoconf2.69
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#
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# autoreconf2.69
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#
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AC_INIT(package-unused, version-unused,, libphobos)
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AC_CONFIG_SRCDIR(libdruntime/gcc/attribute.d)
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AC_CONFIG_HEADERS(config.h)
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AM_ENABLE_MULTILIB(, ..)
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AC_CANONICAL_SYSTEM
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AC_USE_SYSTEM_EXTENSIONS
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target_alias=${target_alias-$target}
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AC_SUBST(target_alias)
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# 1.11.1: Require that version of automake.
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# foreign: Don't require README, INSTALL, NEWS, etc.
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# no-define: Don't define PACKAGE and VERSION.
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# no-dependencies: Don't generate automatic dependencies.
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# (because it breaks when using bootstrap-lean, since some of the
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# headers are gone at "make install" time).
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# subdir-objects: Build objects in sub-directories.
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# -Wall: Issue all automake warnings.
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# -Wno-portability: Don't warn about constructs supported by GNU make.
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# (because GCC requires GNU make anyhow).
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# -Wno-override: Overrides used in testsuite.
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AM_INIT_AUTOMAKE([1.11.1 foreign no-dist no-define no-dependencies subdir-objects -Wall -Wno-portability -Wno-override])
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m4_rename([_AC_ARG_VAR_PRECIOUS],[glibd_PRECIOUS])
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m4_define([_AC_ARG_VAR_PRECIOUS],[])
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AM_PROG_AS
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AC_PROG_CC
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AC_PROG_GDC
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WITH_LOCAL_DRUNTIME([GDC_CHECK_COMPILE], [])
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m4_rename_force([glibd_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
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AC_SUBST(CFLAGS)
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AM_MAINTAINER_MODE
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AC_PROG_RANLIB
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AC_PROG_INSTALL
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AC_PROG_MAKE_SET
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# Add CET specific flags if CET is enabled
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GCC_CET_FLAGS(CET_FLAGS)
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AC_SUBST(CET_FLAGS)
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# To ensure that runtime code for CET is compiled in, add in D version flags.
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AS_IF([test x$enable_cet = xyes], [
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CET_DFLAGS="$CET_FLAGS -fversion=CET"
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DCFG_ENABLE_CET=true
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], [
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CET_DFLAGS=
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DCFG_ENABLE_CET=false
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])
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AC_SUBST(CET_DFLAGS)
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AC_SUBST(DCFG_ENABLE_CET)
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# This should be inherited in the recursive make, but ensure it is defined.
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test "$AR" || AR=ar
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AC_SUBST(AR)
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CC_FOR_BUILD=${CC_FOR_BUILD:-gcc}
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AC_SUBST(CC_FOR_BUILD)
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AC_SUBST(CFLAGS_FOR_BUILD)
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# Enable libtool
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LT_INIT(dlopen)
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AM_PROG_LIBTOOL
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WITH_LOCAL_DRUNTIME([LT_LANG([D])], [])
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# libtool variables for Phobos shared and position-independent compiles.
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#
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# Use phobos_compiler_shared_flag to designate the compile-time flags for
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# creating shared objects. Default: -fversion=Shared.
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#
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# Use phobos_compiler_pic_flag to designate the compile-time flags for
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# creating position-independent objects. This varies with the target
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# hardware and operating system, but is often: -fPIC.
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#
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# The distinction between pic and shared compilation flags is not present in
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# libtool, and so we make it here. How it is handled is that in shared
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# compilations the `lt_prog_compiler_pic_D' variable is used to instead
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# ensure that conditional compilation of shared runtime code is compiled in.
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# The original PIC flags are then used in the compilation of every object.
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#
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# Why are objects destined for libgphobos.a compiled with -fPIC?
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# Because -fPIC is not harmful to use for objects destined for static
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# libraries. In addition, using -fPIC will allow the use of static
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# libgphobos.a in the creation of other D shared libraries.
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if test "$enable_shared" = yes; then
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phobos_compiler_pic_flag="$lt_prog_compiler_pic_D"
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phobos_compiler_shared_flag="-fversion=Shared"
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else
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phobos_compiler_pic_flag=
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phobos_compiler_shared_flag=
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fi
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AC_SUBST(phobos_compiler_pic_flag)
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AC_SUBST(phobos_compiler_shared_flag)
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# Override the libtool's pic_flag and pic_mode.
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# Do this step after AM_PROG_LIBTOOL, but before AC_OUTPUT.
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# NB: this impacts --with-pic and --without-pic.
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lt_prog_compiler_pic_D="$phobos_compiler_shared_flag"
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pic_mode='default'
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# Determine what GCC version number to use in filesystem paths.
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GCC_BASE_VER
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# libphobos/libdruntime specific options and feature detection
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DRUNTIME_CONFIGURE
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DRUNTIME_MULTILIB
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DRUNTIME_WERROR
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DRUNTIME_CPU_SOURCES
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DRUNTIME_OS_SOURCES
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DRUNTIME_OS_THREAD_MODEL
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DRUNTIME_OS_ARM_EABI_UNWINDER
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DRUNTIME_OS_MINFO_BRACKETING
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DRUNTIME_OS_DLPI_TLS_MODID
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DRUNTIME_OS_LINK_SPEC
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DRUNTIME_LIBRARIES_CLIB
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WITH_LOCAL_DRUNTIME([
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AC_LANG_PUSH([D])
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AC_SEARCH_LIBS([malloc], [c])
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AC_SEARCH_LIBS([pthread_create], [pthread])
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AC_SEARCH_LIBS([cosf], [m])
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AC_SEARCH_LIBS([clock_gettime], [rt])
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DRUNTIME_ENABLE_ATOMIC_BUILTINS
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AC_LANG_POP([D])
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], [-nophoboslib])
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DRUNTIME_LIBRARIES_ATOMIC
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DRUNTIME_LIBRARIES_BACKTRACE
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DRUNTIME_LIBRARIES_DLOPEN
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DRUNTIME_LIBRARIES_NET
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DRUNTIME_LIBRARIES_UCONTEXT
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DRUNTIME_LIBRARIES_ZLIB
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DRUNTIME_INSTALL_DIRECTORIES
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AC_MSG_CHECKING([for --enable-libphobos])
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AC_ARG_ENABLE(libphobos,
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[AS_HELP_STRING([--enable-libphobos], [Enable libphobos])])
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AC_MSG_RESULT($enable_libphobos)
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AC_MSG_CHECKING([for --with-libphobos-druntime-only])
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AC_ARG_WITH(libphobos-druntime-only,
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AS_HELP_STRING([--with-libphobos-druntime-only={yes,no,auto}],
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[build only the druntime library (default: auto)]),,
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[with_libphobos_druntime_only=auto])
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AC_MSG_RESULT($with_libphobos_druntime_only)
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case "$with_libphobos_druntime_only" in
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yes|no|auto) ;;
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*) AC_MSG_ERROR([Invalid argument for --with-libphobos-druntime-only]) ;;
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esac
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# See if supported.
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unset LIBPHOBOS_SUPPORTED
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unset LIBDRUNTIME_ONLY
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AC_MSG_CHECKING([for host support for libphobos])
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. ${srcdir}/configure.tgt
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case ${host} in
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x86_64-*-solaris2.* | i?86-*-solaris2.*)
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# libphobos doesn't compile with the Solaris/x86 assembler due to a
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# relatively low linelength limit.
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as_prog=`$CC -print-prog-name=as`
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if test -n "$as_prog" && $as_prog -v /dev/null 2>&1 | grep GNU > /dev/null 2>&1; then
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druntime_cv_use_gas=yes;
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else
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druntime_cv_use_gas=no;
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fi
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rm -f a.out
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if test x$druntime_cv_use_gas = xno; then
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LIBPHOBOS_SUPPORTED=no
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fi
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# 64-bit D execution fails with Solaris ld without -z relax=transtls support.
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if test "$druntime_ld_gld" = "no" && test "$druntime_ld_relax_transtls" = "no"; then
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LIBPHOBOS_SUPPORTED=no
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fi
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;;
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esac
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AC_MSG_RESULT($LIBPHOBOS_SUPPORTED)
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# Decide if it's usable.
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case $LIBPHOBOS_SUPPORTED:$enable_libphobos in
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*:no) use_libphobos=no ;;
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*:yes) use_libphobos=yes ;;
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yes:*) use_libphobos=yes ;;
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*:*) use_libphobos=no ;;
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esac
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AM_CONDITIONAL(ENABLE_LIBPHOBOS, test x$use_libphobos = xyes)
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# Decide if only libdruntime should be built.
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case $LIBDRUNTIME_ONLY:$with_libphobos_druntime_only in
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*:no) only_libdruntime=no ;;
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*:yes) only_libdruntime=yes ;;
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yes:*) only_libdruntime=yes ;;
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*:*) only_libdruntime=no ;;
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esac
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AM_CONDITIONAL(ENABLE_LIBDRUNTIME_ONLY, test x$only_libdruntime = xyes)
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# Enable expensive internal checks
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AC_ARG_ENABLE(libphobos-checking,
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[AS_HELP_STRING([[--enable-libphobos-checking[=LIST]]],
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[enable expensive run-time checks. With LIST,
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enable only specific categories of checks.
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Categories are: yes,no,all,none,release.
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Flags are: assert or other strings])],
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[ac_checking_flags="${enableval}"],[ac_checking_flags=release])
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IFS="${IFS= }"; ac_save_IFS="$IFS"; IFS="$IFS,"
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for check in release $ac_checking_flags
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do
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case $check in
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# These set all the flags to specific states
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yes|all) RELEASE_FLAG="-fno-release" ; ASSERT_FLAG= ;;
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no|none|release) RELEASE_FLAG="-frelease" ; ASSERT_FLAG= ;;
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# These enable particular checks
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assert) ASSERT_FLAG="-fassert" ;;
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# Accept
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*) ;;
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esac
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done
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IFS="$ac_save_IFS"
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CHECKING_DFLAGS="$RELEASE_FLAG $ASSERT_FLAG"
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AC_SUBST(CHECKING_DFLAGS)
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# Add drtbegin.o/drtend.o to startfile/endfile specs in libgphobos.spec
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if test "$DCFG_MINFO_BRACKETING" = "false"; then
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DRTSTUFF_SPEC=$srcdir/src/drtstuff.spec
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else
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DRTSTUFF_SPEC=/dev/null
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fi
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AC_SUBST_FILE(DRTSTUFF_SPEC)
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# Add dependencies for libgphobos.spec file
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SPEC_PHOBOS_DEPS="$LIBS"
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AC_SUBST(SPEC_PHOBOS_DEPS)
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# Libdruntime / phobos soname version
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libtool_VERSION=2:0:0
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AC_SUBST(libtool_VERSION)
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# Set default flags (after DRUNTIME_WERROR!)
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if test -z "$GDCFLAGS"; then
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GDCFLAGS="-g -O2"
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fi
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AC_SUBST(GDCFLAGS)
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WARN_DFLAGS="-Wall $WERROR_FLAG"
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AC_SUBST(WARN_DFLAGS)
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# Sanity check for the cross-compilation case:
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AC_CHECK_HEADER(stdio.h,:,
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[AC_MSG_ERROR([cannot find stdio.h.])])
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AC_CONFIG_FILES(Makefile)
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AC_CONFIG_FILES(libdruntime/gcc/config.d libdruntime/gcc/libbacktrace.d)
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AC_CONFIG_FILES(src/libgphobos.spec)
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AC_CONFIG_FILES([testsuite/testsuite_flags],[chmod +x testsuite/testsuite_flags])
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# Multilibs need MULTISUBDIR defined correctly in certain makefiles so
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# that multilib installs will end up installed in the correct place.
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# The testsuite needs it for multilib-aware ABI baseline files.
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# To work around this not being passed down from config-ml.in ->
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# srcdir/Makefile.am -> srcdir/{src,libdruntime,...}/Makefile.am, manually
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# append it here. Only modify Makefiles that have just been created.
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#
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# Also, get rid of this simulated-VPATH thing that automake does.
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AC_CONFIG_FILES(AC_FOREACH([DIR], [libdruntime src testsuite], [DIR/Makefile ]),
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[cat > vpsed$$ << \_EOF
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s!`test -f '$<' || echo '$(srcdir)/'`!!
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_EOF
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sed -f vpsed$$ $ac_file > tmp$$
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mv tmp$$ $ac_file
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rm vpsed$$
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echo 'MULTISUBDIR =' >> $ac_file
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ml_norecursion=yes
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. ${multi_basedir}/config-ml.in
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AS_UNSET([ml_norecursion])
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])
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AC_OUTPUT
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