libphobos/configure.ac

   1 # Process this file with autoconf to produce a configure script.
   2 # Copyright (C) 2006-2022 Free Software Foundation, Inc.
   3 #
   4 # GCC is free software; you can redistribute it and/or modify
   5 # it under the terms of the GNU General Public License as published by
   6 # the Free Software Foundation; either version 3, or (at your option)
   7 # any later version.
   8 #
   9 # GCC is distributed in the hope that it will be useful,
  10 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  11 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12 # GNU General Public License for more details.
  13 #
  14 # You should have received a copy of the GNU General Public License
  15 # along with GCC; see the file COPYING3.  If not see
  16 # <http://www.gnu.org/licenses/>.
  17
  18 # This requires that you have your environment set-up to use explicit
  19 # versions of automake and autoconf.
  20 #
  21 #    export ACLOCAL=/usr/bin/aclocal-1.15
  22 #    export AUTOMAKE=/usr/bin/automake-1.15
  23 #    export AUTOM4TE=/usr/bin/autom4te2.69
  24 #    export AUTOCONF=/usr/bin/autoconf2.69
  25 #
  26 #    autoreconf2.69
  27 #
  28
  29 AC_INIT(package-unused, version-unused,, libphobos)
  30 AC_CONFIG_SRCDIR(libdruntime/gcc/attribute.d)
  31 AC_CONFIG_HEADERS(config.h)
  32
  33 AM_ENABLE_MULTILIB(, ..)
  34 AC_CANONICAL_SYSTEM
  35 AC_USE_SYSTEM_EXTENSIONS
  36
  37 target_alias=${target_alias-$target}
  38 AC_SUBST(target_alias)
  39
  40 # 1.11.1: Require that version of automake.
  41 # foreign: Don't require README, INSTALL, NEWS, etc.
  42 # no-define: Don't define PACKAGE and VERSION.
  43 # no-dependencies: Don't generate automatic dependencies.
  44 #    (because it breaks when using bootstrap-lean, since some of the
  45 #    headers are gone at "make install" time).
  46 # subdir-objects: Build objects in sub-directories.
  47 # -Wall: Issue all automake warnings.
  48 # -Wno-portability: Don't warn about constructs supported by GNU make.
  49 #    (because GCC requires GNU make anyhow).
  50 #  -Wno-override: Overrides used in testsuite.
  51 AM_INIT_AUTOMAKE([1.11.1 foreign no-dist no-define no-dependencies subdir-objects -Wall -Wno-portability -Wno-override])
  52
  53 m4_rename([_AC_ARG_VAR_PRECIOUS],[glibd_PRECIOUS])
  54 m4_define([_AC_ARG_VAR_PRECIOUS],[])
  55 AM_PROG_AS
  56 AC_PROG_CC
  57 AC_PROG_GDC
  58 WITH_LOCAL_DRUNTIME([GDC_CHECK_COMPILE], [])
  59
  60 m4_rename_force([glibd_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
  61
  62 AC_SUBST(CFLAGS)
  63 AM_MAINTAINER_MODE
  64 AC_PROG_RANLIB
  65 AC_PROG_INSTALL
  66 AC_PROG_MAKE_SET
  67
  68 # Add CET specific flags if CET is enabled
  69 GCC_CET_FLAGS(CET_FLAGS)
  70 AC_SUBST(CET_FLAGS)
  71 # To ensure that runtime code for CET is compiled in, add in D version flags.
  72 AS_IF([test x$enable_cet = xyes], [
  73   CET_DFLAGS="$CET_FLAGS -fversion=CET"
  74   DCFG_ENABLE_CET=true
  75 ], [
  76   CET_DFLAGS=
  77   DCFG_ENABLE_CET=false
  78 ])
  79 AC_SUBST(CET_DFLAGS)
  80 AC_SUBST(DCFG_ENABLE_CET)
  81
  82 # This should be inherited in the recursive make, but ensure it is defined.
  83 test "$AR" || AR=ar
  84 AC_SUBST(AR)
  85
  86 CC_FOR_BUILD=${CC_FOR_BUILD:-gcc}
  87 AC_SUBST(CC_FOR_BUILD)
  88 AC_SUBST(CFLAGS_FOR_BUILD)
  89
  90 # Enable libtool
  91 LT_INIT(dlopen)
  92 AM_PROG_LIBTOOL
  93 WITH_LOCAL_DRUNTIME([LT_LANG([D])], [])
  94 AC_SUBST(enable_shared)
  95 AC_SUBST(enable_static)
  96
  97 # libtool variables for Phobos shared and position-independent compiles.
  98 #
  99 # Use phobos_lt_pic_flag to designate the automake variable
 100 # used to encapsulate the default libtool approach to creating objects
 101 # with position-independent code. Default: -prefer-pic.
 102 #
 103 # Use phobos_compiler_shared_flag to designate the compile-time flags for
 104 # creating shared objects. Default: -fversion=Shared.
 105 #
 106 # Use phobos_compiler_pic_flag to designate the compile-time flags for
 107 # creating position-independent objects. This varies with the target
 108 # hardware and operating system, but is often: -fPIC.
 109 #
 110 # The distinction between pic and shared compilation flags is not present in
 111 # libtool, and so we make it here.  How it is handled is that in shared
 112 # compilations the `lt_prog_compiler_pic_D' variable is used to instead
 113 # ensure that conditional compilation of shared runtime code is compiled in.
 114 if test "$enable_shared" = yes; then
 115   phobos_lt_pic_flag="-prefer-pic"
 116   phobos_compiler_pic_flag="$lt_prog_compiler_pic_D"
 117   phobos_compiler_shared_flag="-fversion=Shared"
 118 else
 119   phobos_lt_pic_flag=
 120   phobos_compiler_pic_flag=
 121   phobos_compiler_shared_flag=
 122 fi
 123 AC_SUBST(phobos_lt_pic_flag)
 124 AC_SUBST(phobos_compiler_pic_flag)
 125 AC_SUBST(phobos_compiler_shared_flag)
 126
 127 # Override the libtool's pic_flag and pic_mode.
 128 # Do this step after AM_PROG_LIBTOOL, but before AC_OUTPUT.
 129 # NB: this impacts --with-pic and --without-pic.
 130 lt_prog_compiler_pic_D="$phobos_compiler_pic_flag $phobos_compiler_shared_flag"
 131 pic_mode='default'
 132
 133 # Determine what GCC version number to use in filesystem paths.
 134 GCC_BASE_VER
 135
 136 # libphobos/libdruntime specific options and feature detection
 137 DRUNTIME_CONFIGURE
 138 DRUNTIME_MULTILIB
 139 DRUNTIME_WERROR
 140 DRUNTIME_SECTION_FLAGS
 141 DRUNTIME_CPU_SOURCES
 142 DRUNTIME_OS_SOURCES
 143 DRUNTIME_OS_THREAD_MODEL
 144 DRUNTIME_OS_ARM_EABI_UNWINDER
 145 DRUNTIME_OS_MINFO_BRACKETING
 146 DRUNTIME_OS_DLPI_TLS_MODID
 147 DRUNTIME_OS_LINK_SPEC
 148 DRUNTIME_LIBRARIES_CLIB
 149
 150 WITH_LOCAL_DRUNTIME([
 151   AC_LANG_PUSH([D])
 152   AC_SEARCH_LIBS([malloc], [c])
 153   AC_SEARCH_LIBS([pthread_create], [pthread])
 154   AC_SEARCH_LIBS([cosf], [m])
 155   AC_SEARCH_LIBS([clock_gettime], [rt])
 156   DRUNTIME_ENABLE_ATOMIC_BUILTINS
 157   AC_LANG_POP([D])
 158 ], [-nophoboslib])
 159
 160 DRUNTIME_LIBRARIES_ATOMIC
 161 DRUNTIME_LIBRARIES_BACKTRACE
 162 DRUNTIME_LIBRARIES_DLOPEN
 163 DRUNTIME_LIBRARIES_NET
 164 DRUNTIME_LIBRARIES_UCONTEXT
 165 DRUNTIME_LIBRARIES_ZLIB
 166 DRUNTIME_INSTALL_DIRECTORIES
 167
 168 AC_MSG_CHECKING([for --enable-libphobos])
 169 AC_ARG_ENABLE(libphobos,
 170   [AS_HELP_STRING([--enable-libphobos], [Enable libphobos])])
 171 AC_MSG_RESULT($enable_libphobos)
 172
 173 AC_MSG_CHECKING([for --with-libphobos-druntime-only])
 174 AC_ARG_WITH(libphobos-druntime-only,
 175   AS_HELP_STRING([--with-libphobos-druntime-only={yes,no,auto}],
 176                  [build only the druntime library (default: auto)]),,
 177             [with_libphobos_druntime_only=auto])
 178 AC_MSG_RESULT($with_libphobos_druntime_only)
 179
 180 case "$with_libphobos_druntime_only" in
 181   yes|no|auto) ;;
 182   *) AC_MSG_ERROR([Invalid argument for --with-libphobos-druntime-only]) ;;
 183 esac
 184
 185 # See if supported.
 186 unset LIBPHOBOS_SUPPORTED
 187 unset LIBDRUNTIME_ONLY
 188 AC_MSG_CHECKING([for host support for libphobos])
 189 . ${srcdir}/configure.tgt
 190 case ${host} in
 191   x86_64-*-solaris2.* | i?86-*-solaris2.*)
 192     # 64-bit D execution fails with Solaris ld without -z relax=transtls support.
 193     if test "$druntime_ld_gld" = "no" && test "$druntime_ld_relax_transtls" = "no"; then
 194       LIBPHOBOS_SUPPORTED=no
 195     fi
 196     ;;
 197 esac
 198 AC_MSG_RESULT($LIBPHOBOS_SUPPORTED)
 199
 200 # Decide if it's usable.
 201 case $LIBPHOBOS_SUPPORTED:$enable_libphobos in
 202 *:no)  use_libphobos=no  ;;
 203 *:yes) use_libphobos=yes ;;
 204 yes:*) use_libphobos=yes ;;
 205 *:*)   use_libphobos=no  ;;
 206 esac
 207 AM_CONDITIONAL(ENABLE_LIBPHOBOS, test x$use_libphobos = xyes)
 208
 209 # Decide if only libdruntime should be built.
 210 case $LIBDRUNTIME_ONLY:$with_libphobos_druntime_only in
 211 *:no)  only_libdruntime=no  ;;
 212 *:yes) only_libdruntime=yes ;;
 213 yes:*) only_libdruntime=yes ;;
 214 *:*)   only_libdruntime=no  ;;
 215 esac
 216 AM_CONDITIONAL(ENABLE_LIBDRUNTIME_ONLY, test x$only_libdruntime = xyes)
 217
 218 # Enable expensive internal checks
 219 AC_ARG_ENABLE(libphobos-checking,
 220 [AS_HELP_STRING([[--enable-libphobos-checking[=LIST]]],
 221                 [enable expensive run-time checks.  With LIST,
 222                  enable only specific categories of checks.
 223                  Categories are: yes,no,all,none,release.
 224                  Flags are: assert or other strings])],
 225 [ac_checking_flags="${enableval}"],[ac_checking_flags=release])
 226 IFS="${IFS=     }"; ac_save_IFS="$IFS"; IFS="$IFS,"
 227 for check in release $ac_checking_flags
 228 do
 229         case $check in
 230         # These set all the flags to specific states
 231         yes|all) RELEASE_FLAG="-fno-release" ; ASSERT_FLAG= ;;
 232         no|none|release) RELEASE_FLAG="-frelease" ; ASSERT_FLAG= ;;
 233         # These enable particular checks
 234         assert) ASSERT_FLAG="-fassert" ;;
 235         # Accept
 236         *) ;;
 237         esac
 238 done
 239 IFS="$ac_save_IFS"
 240 CHECKING_DFLAGS="$RELEASE_FLAG $ASSERT_FLAG"
 241 AC_SUBST(CHECKING_DFLAGS)
 242
 243 # Add drtbegin.o/drtend.o to startfile/endfile specs in libgphobos.spec
 244 if test "$DCFG_MINFO_BRACKETING" = "false"; then
 245     DRTSTUFF_SPEC=$srcdir/src/drtstuff.spec
 246 else
 247     DRTSTUFF_SPEC=/dev/null
 248 fi
 249 AC_SUBST_FILE(DRTSTUFF_SPEC)
 250
 251 # Add dependencies for libgphobos.spec file
 252 SPEC_PHOBOS_DEPS="$LIBS"
 253 AC_SUBST(SPEC_PHOBOS_DEPS)
 254
 255 # Libdruntime / phobos soname version
 256 libtool_VERSION=4:0:0
 257 AC_SUBST(libtool_VERSION)
 258
 259 # Set default flags (after DRUNTIME_WERROR!)
 260 if test -z "$GDCFLAGS"; then
 261     GDCFLAGS="-g -O2"
 262 fi
 263 AC_SUBST(GDCFLAGS)
 264
 265 WARN_DFLAGS="-Wall $WERROR_FLAG"
 266 AC_SUBST(WARN_DFLAGS)
 267
 268 # Sanity check for the cross-compilation case:
 269 AC_CHECK_HEADER(stdio.h,:,
 270   [AC_MSG_ERROR([cannot find stdio.h.])])
 271
 272 AC_CONFIG_FILES(Makefile)
 273
 274 AC_CONFIG_FILES(libdruntime/gcc/config.d libdruntime/gcc/libbacktrace.d)
 275 AC_CONFIG_FILES(src/libgphobos.spec)
 276 AC_CONFIG_FILES([testsuite/testsuite_flags],[chmod +x testsuite/testsuite_flags])
 277
 278 # Multilibs need MULTISUBDIR defined correctly in certain makefiles so
 279 # that multilib installs will end up installed in the correct place.
 280 # The testsuite needs it for multilib-aware ABI baseline files.
 281 # To work around this not being passed down from config-ml.in ->
 282 # srcdir/Makefile.am -> srcdir/{src,libdruntime,...}/Makefile.am, manually
 283 # append it here.  Only modify Makefiles that have just been created.
 284 #
 285 # Also, get rid of this simulated-VPATH thing that automake does.
 286 AC_CONFIG_FILES(AC_FOREACH([DIR], [libdruntime src testsuite], [DIR/Makefile ]),
 287   [cat > vpsed$$ << \_EOF
 288 s!`test -f '$<' || echo '$(srcdir)/'`!!
 289 _EOF
 290    sed -f vpsed$$ $ac_file > tmp$$
 291    mv tmp$$ $ac_file
 292    rm vpsed$$
 293    echo 'MULTISUBDIR =' >> $ac_file
 294    ml_norecursion=yes
 295    . ${multi_basedir}/config-ml.in
 296    AS_UNSET([ml_norecursion])
 297 ])
 298
 299 AC_OUTPUT