libphobos/configure.ac

   1 # Process this file with autoconf to produce a configure script.
   2 # Copyright (C) 2006-2020 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 if test "$enable_cet" = yes; then
  73   CET_DFLAGS="$CET_FLAGS -fversion=CET"
  74   AC_SUBST(CET_DFLAGS)
  75 fi
  76
  77 # This should be inherited in the recursive make, but ensure it is defined.
  78 test "$AR" || AR=ar
  79 AC_SUBST(AR)
  80
  81 CC_FOR_BUILD=${CC_FOR_BUILD:-gcc}
  82 AC_SUBST(CC_FOR_BUILD)
  83 AC_SUBST(CFLAGS_FOR_BUILD)
  84
  85 # Enable libtool
  86 LT_INIT(dlopen)
  87 AM_PROG_LIBTOOL
  88 WITH_LOCAL_DRUNTIME([LT_LANG([D])], [])
  89
  90 # libtool variables for Phobos shared and position-independent compiles.
  91 #
  92 # Use phobos_compiler_shared_flag to designate the compile-time flags for
  93 # creating shared objects. Default: -fversion=Shared.
  94 #
  95 # Use phobos_compiler_pic_flag to designate the compile-time flags for
  96 # creating position-independent objects. This varies with the target
  97 # hardware and operating system, but is often: -fPIC.
  98 #
  99 # The distinction between pic and shared compilation flags is not present in
 100 # libtool, and so we make it here.  How it is handled is that in shared
 101 # compilations the `lt_prog_compiler_pic_D' variable is used to instead
 102 # ensure that conditional compilation of shared runtime code is compiled in.
 103 # The original PIC flags are then used in the compilation of every object.
 104 #
 105 # Why are objects destined for libgphobos.a compiled with -fPIC?
 106 # Because -fPIC is not harmful to use for objects destined for static
 107 # libraries. In addition, using -fPIC will allow the use of static
 108 # libgphobos.a in the creation of other D shared libraries.
 109 if test "$enable_shared" = yes; then
 110   phobos_compiler_pic_flag="$lt_prog_compiler_pic_D"
 111   phobos_compiler_shared_flag="-fversion=Shared"
 112 else
 113   phobos_compiler_pic_flag=
 114   phobos_compiler_shared_flag=
 115 fi
 116 AC_SUBST(phobos_compiler_pic_flag)
 117 AC_SUBST(phobos_compiler_shared_flag)
 118
 119 # Override the libtool's pic_flag and pic_mode.
 120 # Do this step after AM_PROG_LIBTOOL, but before AC_OUTPUT.
 121 # NB: this impacts --with-pic and --without-pic.
 122 lt_prog_compiler_pic_D="$phobos_compiler_shared_flag"
 123 pic_mode='default'
 124
 125 # Determine what GCC version number to use in filesystem paths.
 126 GCC_BASE_VER
 127
 128 # libphobos/libdruntime specific options and feature detection
 129 DRUNTIME_CONFIGURE
 130 DRUNTIME_MULTILIB
 131 DRUNTIME_WERROR
 132 DRUNTIME_CPU_SOURCES
 133 DRUNTIME_OS_SOURCES
 134 DRUNTIME_OS_THREAD_MODEL
 135 DRUNTIME_OS_ARM_EABI_UNWINDER
 136 DRUNTIME_OS_MINFO_BRACKETING
 137 DRUNTIME_OS_DLPI_TLS_MODID
 138 DRUNTIME_OS_LINK_SPEC
 139 DRUNTIME_LIBRARIES_CLIB
 140
 141 WITH_LOCAL_DRUNTIME([
 142   AC_LANG_PUSH([D])
 143   AC_SEARCH_LIBS([malloc], [c])
 144   AC_SEARCH_LIBS([pthread_create], [pthread])
 145   AC_SEARCH_LIBS([cosf], [m])
 146   AC_SEARCH_LIBS([clock_gettime], [rt])
 147   DRUNTIME_ENABLE_ATOMIC_BUILTINS
 148   AC_LANG_POP([D])
 149 ], [-nophoboslib])
 150
 151 DRUNTIME_LIBRARIES_ATOMIC
 152 DRUNTIME_LIBRARIES_BACKTRACE
 153 DRUNTIME_LIBRARIES_DLOPEN
 154 DRUNTIME_LIBRARIES_NET
 155 DRUNTIME_LIBRARIES_UCONTEXT
 156 DRUNTIME_LIBRARIES_ZLIB
 157 DRUNTIME_INSTALL_DIRECTORIES
 158
 159 AC_MSG_CHECKING([for --enable-libphobos])
 160 AC_ARG_ENABLE(libphobos,
 161   [AS_HELP_STRING([--enable-libphobos], [Enable libphobos])])
 162 AC_MSG_RESULT($enable_libphobos)
 163
 164 AC_MSG_CHECKING([for --with-libphobos-druntime-only])
 165 AC_ARG_WITH(libphobos-druntime-only,
 166   AS_HELP_STRING([--with-libphobos-druntime-only={yes,no,auto}],
 167                  [build only the druntime library (default: auto)]),,
 168             [with_libphobos_druntime_only=auto])
 169 AC_MSG_RESULT($with_libphobos_druntime_only)
 170
 171 case "$with_libphobos_druntime_only" in
 172   yes|no|auto) ;;
 173   *) AC_MSG_ERROR([Invalid argument for --with-libphobos-druntime-only]) ;;
 174 esac
 175
 176 # See if supported.
 177 unset LIBPHOBOS_SUPPORTED
 178 unset LIBDRUNTIME_ONLY
 179 AC_MSG_CHECKING([for host support for libphobos])
 180 . ${srcdir}/configure.tgt
 181 case ${host} in
 182   x86_64-*-solaris2.* | i?86-*-solaris2.*)
 183     # libphobos doesn't compile with the Solaris/x86 assembler due to a
 184     # relatively low linelength limit.
 185     as_prog=`$CC -print-prog-name=as`
 186     if test -n "$as_prog" && $as_prog -v /dev/null 2>&1 | grep GNU > /dev/null 2>&1; then
 187       druntime_cv_use_gas=yes;
 188     else
 189       druntime_cv_use_gas=no;
 190     fi
 191     rm -f a.out
 192     if test x$druntime_cv_use_gas = xno; then
 193       LIBPHOBOS_SUPPORTED=no
 194     fi
 195     # 64-bit D execution fails with Solaris ld without -z relax=transtls support.
 196     if test "$druntime_ld_gld" = "no" && test "$druntime_ld_relax_transtls" = "no"; then
 197       LIBPHOBOS_SUPPORTED=no
 198     fi
 199     ;;
 200 esac
 201 AC_MSG_RESULT($LIBPHOBOS_SUPPORTED)
 202
 203 # Decide if it's usable.
 204 case $LIBPHOBOS_SUPPORTED:$enable_libphobos in
 205 *:no)  use_libphobos=no  ;;
 206 *:yes) use_libphobos=yes ;;
 207 yes:*) use_libphobos=yes ;;
 208 *:*)   use_libphobos=no  ;;
 209 esac
 210 AM_CONDITIONAL(ENABLE_LIBPHOBOS, test x$use_libphobos = xyes)
 211
 212 # Decide if only libdruntime should be built.
 213 case $LIBDRUNTIME_ONLY:$with_libphobos_druntime_only in
 214 *:no)  only_libdruntime=no  ;;
 215 *:yes) only_libdruntime=yes ;;
 216 yes:*) only_libdruntime=yes ;;
 217 *:*)   only_libdruntime=no  ;;
 218 esac
 219 AM_CONDITIONAL(ENABLE_LIBDRUNTIME_ONLY, test x$only_libdruntime = xyes)
 220
 221 # Enable expensive internal checks
 222 AC_ARG_ENABLE(libphobos-checking,
 223 [AS_HELP_STRING([[--enable-libphobos-checking[=LIST]]],
 224                 [enable expensive run-time checks.  With LIST,
 225                  enable only specific categories of checks.
 226                  Categories are: yes,no,all,none,release.
 227                  Flags are: assert or other strings])],
 228 [ac_checking_flags="${enableval}"],[ac_checking_flags=release])
 229 IFS="${IFS=     }"; ac_save_IFS="$IFS"; IFS="$IFS,"
 230 for check in release $ac_checking_flags
 231 do
 232         case $check in
 233         # These set all the flags to specific states
 234         yes|all) RELEASE_FLAG="-fno-release" ; ASSERT_FLAG= ;;
 235         no|none|release) RELEASE_FLAG="-frelease" ; ASSERT_FLAG= ;;
 236         # These enable particular checks
 237         assert) ASSERT_FLAG="-fassert" ;;
 238         # Accept
 239         *) ;;
 240         esac
 241 done
 242 IFS="$ac_save_IFS"
 243 CHECKING_DFLAGS="$RELEASE_FLAG $ASSERT_FLAG"
 244 AC_SUBST(CHECKING_DFLAGS)
 245
 246 # Add drtbegin.o/drtend.o to startfile/endfile specs in libgphobos.spec
 247 if test "$DCFG_MINFO_BRACKETING" = "false"; then
 248     DRTSTUFF_SPEC=$srcdir/src/drtstuff.spec
 249 else
 250     DRTSTUFF_SPEC=/dev/null
 251 fi
 252 AC_SUBST_FILE(DRTSTUFF_SPEC)
 253
 254 # Add dependencies for libgphobos.spec file
 255 SPEC_PHOBOS_DEPS="$LIBS"
 256 AC_SUBST(SPEC_PHOBOS_DEPS)
 257
 258 # Libdruntime / phobos soname version
 259 libtool_VERSION=1:0:0
 260 AC_SUBST(libtool_VERSION)
 261
 262 # Set default flags (after DRUNTIME_WERROR!)
 263 if test -z "$GDCFLAGS"; then
 264     GDCFLAGS="-g -O2"
 265 fi
 266 AC_SUBST(GDCFLAGS)
 267
 268 WARN_DFLAGS="-Wall $WERROR_FLAG"
 269 AC_SUBST(WARN_DFLAGS)
 270
 271 # Sanity check for the cross-compilation case:
 272 AC_CHECK_HEADER(stdio.h,:,
 273   [AC_MSG_ERROR([cannot find stdio.h.])])
 274
 275 AC_CONFIG_FILES(Makefile)
 276
 277 AC_CONFIG_FILES(libdruntime/gcc/config.d libdruntime/gcc/libbacktrace.d)
 278 AC_CONFIG_FILES(src/libgphobos.spec)
 279 AC_CONFIG_FILES([testsuite/testsuite_flags],[chmod +x testsuite/testsuite_flags])
 280
 281 # Multilibs need MULTISUBDIR defined correctly in certain makefiles so
 282 # that multilib installs will end up installed in the correct place.
 283 # The testsuite needs it for multilib-aware ABI baseline files.
 284 # To work around this not being passed down from config-ml.in ->
 285 # srcdir/Makefile.am -> srcdir/{src,libdruntime,...}/Makefile.am, manually
 286 # append it here.  Only modify Makefiles that have just been created.
 287 #
 288 # Also, get rid of this simulated-VPATH thing that automake does.
 289 AC_CONFIG_FILES(AC_FOREACH([DIR], [libdruntime src testsuite], [DIR/Makefile ]),
 290   [cat > vpsed$$ << \_EOF
 291 s!`test -f '$<' || echo '$(srcdir)/'`!!
 292 _EOF
 293    sed -f vpsed$$ $ac_file > tmp$$
 294    mv tmp$$ $ac_file
 295    rm vpsed$$
 296    echo 'MULTISUBDIR =' >> $ac_file
 297    ml_norecursion=yes
 298    . ${multi_basedir}/config-ml.in
 299    AS_UNSET([ml_norecursion])
 300 ])
 301
 302 AC_OUTPUT