Daily bump.
[official-gcc.git] / libphobos / configure.ac
blob3b5a830cccfaca11750e797502c7c0188ac6a215
1 # Process this file with autoconf to produce a configure script.
2 # Copyright (C) 2006-2021 Free Software Foundation, Inc.
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.
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.
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/>.
18 # This requires that you have your environment set-up to use explicit
19 # versions of automake and autoconf.
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
26 #    autoreconf2.69
29 AC_INIT(package-unused, version-unused,, libphobos)
30 AC_CONFIG_SRCDIR(libdruntime/gcc/attribute.d)
31 AC_CONFIG_HEADERS(config.h)
33 AM_ENABLE_MULTILIB(, ..)
34 AC_CANONICAL_SYSTEM
35 AC_USE_SYSTEM_EXTENSIONS
37 target_alias=${target_alias-$target}
38 AC_SUBST(target_alias)
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])
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], [])
60 m4_rename_force([glibd_PRECIOUS],[_AC_ARG_VAR_PRECIOUS])
62 AC_SUBST(CFLAGS)
63 AM_MAINTAINER_MODE
64 AC_PROG_RANLIB
65 AC_PROG_INSTALL
66 AC_PROG_MAKE_SET
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
79 AC_SUBST(CET_DFLAGS)
80 AC_SUBST(DCFG_ENABLE_CET)
82 # This should be inherited in the recursive make, but ensure it is defined.
83 test "$AR" || AR=ar
84 AC_SUBST(AR)
86 CC_FOR_BUILD=${CC_FOR_BUILD:-gcc}
87 AC_SUBST(CC_FOR_BUILD)
88 AC_SUBST(CFLAGS_FOR_BUILD)
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)
97 # libtool variables for Phobos shared and position-independent compiles.
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.
103 # Use phobos_compiler_shared_flag to designate the compile-time flags for
104 # creating shared objects. Default: -fversion=Shared.
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.
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=
123 AC_SUBST(phobos_lt_pic_flag)
124 AC_SUBST(phobos_compiler_pic_flag)
125 AC_SUBST(phobos_compiler_shared_flag)
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 $phobos_compiler_shared_flag"
131 pic_mode='default'
133 # Determine what GCC version number to use in filesystem paths.
134 GCC_BASE_VER
136 # libphobos/libdruntime specific options and feature detection
137 DRUNTIME_CONFIGURE
138 DRUNTIME_MULTILIB
139 DRUNTIME_WERROR
140 DRUNTIME_SECTION_FLAGS
141 DRUNTIME_CPU_SOURCES
142 DRUNTIME_OS_SOURCES
143 DRUNTIME_OS_THREAD_MODEL
144 DRUNTIME_OS_ARM_EABI_UNWINDER
145 DRUNTIME_OS_MINFO_BRACKETING
146 DRUNTIME_OS_DLPI_TLS_MODID
147 DRUNTIME_OS_LINK_SPEC
148 DRUNTIME_LIBRARIES_CLIB
150 WITH_LOCAL_DRUNTIME([
151   AC_LANG_PUSH([D])
152   AC_SEARCH_LIBS([malloc], [c])
153   AC_SEARCH_LIBS([pthread_create], [pthread])
154   AC_SEARCH_LIBS([cosf], [m])
155   AC_SEARCH_LIBS([clock_gettime], [rt])
156   DRUNTIME_ENABLE_ATOMIC_BUILTINS
157   AC_LANG_POP([D])
158 ], [-nophoboslib])
160 DRUNTIME_LIBRARIES_ATOMIC
161 DRUNTIME_LIBRARIES_BACKTRACE
162 DRUNTIME_LIBRARIES_DLOPEN
163 DRUNTIME_LIBRARIES_NET
164 DRUNTIME_LIBRARIES_UCONTEXT
165 DRUNTIME_LIBRARIES_ZLIB
166 DRUNTIME_INSTALL_DIRECTORIES
168 AC_MSG_CHECKING([for --enable-libphobos])
169 AC_ARG_ENABLE(libphobos,
170   [AS_HELP_STRING([--enable-libphobos], [Enable libphobos])])
171 AC_MSG_RESULT($enable_libphobos)
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($with_libphobos_druntime_only)
180 case "$with_libphobos_druntime_only" in
181   yes|no|auto) ;;
182   *) AC_MSG_ERROR([Invalid argument for --with-libphobos-druntime-only]) ;;
183 esac
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 ${host} in
191   x86_64-*-solaris2.* | i?86-*-solaris2.*)
192     # libphobos doesn't compile with the Solaris/x86 assembler due to a
193     # relatively low linelength limit.
194     as_prog=`$CC -print-prog-name=as`
195     if test -n "$as_prog" && $as_prog -v /dev/null 2>&1 | grep GNU > /dev/null 2>&1; then
196       druntime_cv_use_gas=yes;
197     else
198       druntime_cv_use_gas=no;
199     fi
200     rm -f a.out
201     if test x$druntime_cv_use_gas = xno; then
202       LIBPHOBOS_SUPPORTED=no
203     fi
204     # 64-bit D execution fails with Solaris ld without -z relax=transtls support.
205     if test "$druntime_ld_gld" = "no" && test "$druntime_ld_relax_transtls" = "no"; then
206       LIBPHOBOS_SUPPORTED=no
207     fi
208     ;;
209 esac
210 AC_MSG_RESULT($LIBPHOBOS_SUPPORTED)
212 # Decide if it's usable.
213 case $LIBPHOBOS_SUPPORTED:$enable_libphobos in
214 *:no)  use_libphobos=no  ;;
215 *:yes) use_libphobos=yes ;;
216 yes:*) use_libphobos=yes ;;
217 *:*)   use_libphobos=no  ;;
218 esac
219 AM_CONDITIONAL(ENABLE_LIBPHOBOS, test x$use_libphobos = xyes)
221 # Decide if only libdruntime should be built.
222 case $LIBDRUNTIME_ONLY:$with_libphobos_druntime_only in
223 *:no)  only_libdruntime=no  ;;
224 *:yes) only_libdruntime=yes ;;
225 yes:*) only_libdruntime=yes ;;
226 *:*)   only_libdruntime=no  ;;
227 esac
228 AM_CONDITIONAL(ENABLE_LIBDRUNTIME_ONLY, test x$only_libdruntime = xyes)
230 # Enable expensive internal checks
231 AC_ARG_ENABLE(libphobos-checking,
232 [AS_HELP_STRING([[--enable-libphobos-checking[=LIST]]],
233                 [enable expensive run-time checks.  With LIST,
234                  enable only specific categories of checks.
235                  Categories are: yes,no,all,none,release.
236                  Flags are: assert or other strings])],
237 [ac_checking_flags="${enableval}"],[ac_checking_flags=release])
238 IFS="${IFS=     }"; ac_save_IFS="$IFS"; IFS="$IFS,"
239 for check in release $ac_checking_flags
241         case $check in
242         # These set all the flags to specific states
243         yes|all) RELEASE_FLAG="-fno-release" ; ASSERT_FLAG= ;;
244         no|none|release) RELEASE_FLAG="-frelease" ; ASSERT_FLAG= ;;
245         # These enable particular checks
246         assert) ASSERT_FLAG="-fassert" ;;
247         # Accept
248         *) ;;
249         esac
250 done
251 IFS="$ac_save_IFS"
252 CHECKING_DFLAGS="$RELEASE_FLAG $ASSERT_FLAG"
253 AC_SUBST(CHECKING_DFLAGS)
255 # Add drtbegin.o/drtend.o to startfile/endfile specs in libgphobos.spec
256 if test "$DCFG_MINFO_BRACKETING" = "false"; then
257     DRTSTUFF_SPEC=$srcdir/src/drtstuff.spec
258 else
259     DRTSTUFF_SPEC=/dev/null
261 AC_SUBST_FILE(DRTSTUFF_SPEC)
263 # Add dependencies for libgphobos.spec file
264 SPEC_PHOBOS_DEPS="$LIBS"
265 AC_SUBST(SPEC_PHOBOS_DEPS)
267 # Libdruntime / phobos soname version
268 libtool_VERSION=2:0:0
269 AC_SUBST(libtool_VERSION)
271 # Set default flags (after DRUNTIME_WERROR!)
272 if test -z "$GDCFLAGS"; then
273     GDCFLAGS="-g -O2"
275 AC_SUBST(GDCFLAGS)
277 WARN_DFLAGS="-Wall $WERROR_FLAG"
278 AC_SUBST(WARN_DFLAGS)
280 # Sanity check for the cross-compilation case:
281 AC_CHECK_HEADER(stdio.h,:,
282   [AC_MSG_ERROR([cannot find stdio.h.])])
284 AC_CONFIG_FILES(Makefile)
286 AC_CONFIG_FILES(libdruntime/gcc/config.d libdruntime/gcc/libbacktrace.d)
287 AC_CONFIG_FILES(src/libgphobos.spec)
288 AC_CONFIG_FILES([testsuite/testsuite_flags],[chmod +x testsuite/testsuite_flags])
290 # Multilibs need MULTISUBDIR defined correctly in certain makefiles so
291 # that multilib installs will end up installed in the correct place.
292 # The testsuite needs it for multilib-aware ABI baseline files.
293 # To work around this not being passed down from config-ml.in ->
294 # srcdir/Makefile.am -> srcdir/{src,libdruntime,...}/Makefile.am, manually
295 # append it here.  Only modify Makefiles that have just been created.
297 # Also, get rid of this simulated-VPATH thing that automake does.
298 AC_CONFIG_FILES(AC_FOREACH([DIR], [libdruntime src testsuite], [DIR/Makefile ]),
299   [cat > vpsed$$ << \_EOF
300 s!`test -f '$<' || echo '$(srcdir)/'`!!
301 _EOF
302    sed -f vpsed$$ $ac_file > tmp$$
303    mv tmp$$ $ac_file
304    rm vpsed$$
305    echo 'MULTISUBDIR =' >> $ac_file
306    ml_norecursion=yes
307    . ${multi_basedir}/config-ml.in
308    AS_UNSET([ml_norecursion])
311 AC_OUTPUT