3 dnl Configuration script for Catacomb
5 dnl (c) 2013 Straylight/Edgeware
8 dnl----- Licensing notice ---------------------------------------------------
10 dnl This file is part of Catacomb.
12 dnl Catacomb is free software; you can redistribute it and/or modify
13 dnl it under the terms of the GNU Library General Public License as
14 dnl published by the Free Software Foundation; either version 2 of the
15 dnl License, or (at your option) any later version.
17 dnl Catacomb is distributed in the hope that it will be useful,
18 dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
19 dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
20 dnl GNU Library General Public License for more details.
22 dnl You should have received a copy of the GNU Library General Public
23 dnl License along with Catacomb; if not, write to the Free
24 dnl Software Foundation, Inc., 59 Temple Place - Suite 330, Boston,
25 dnl MA 02111-1307, USA.
27 dnl--------------------------------------------------------------------------
31 AC_INIT([catacomb], AUTO_VERSION, [mdw@distorted.org.uk])
32 AC_CONFIG_SRCDIR([catacomb.pc.in])
33 AC_CONFIG_AUX_DIR([config])
34 AM_INIT_AUTOMAKE([foreign parallel-tests color-tests subdir-objects])
41 mdw_LIBTOOL_VERSION_INFO
49 dnl--------------------------------------------------------------------------
50 dnl Define language support for assembler.
52 dnl This is stolen from https://gitlab.crest.iu.edu/jsfiroz/hpx/commit/
53 dnl 84be4345db6eec3797a57b8e53483cb43f4733bf
55 AC_LANG_DEFINE([CPPAS], [cppas], [CPPAS], [CCAS], [C],
56 [ac_ext=S ac_cpp='$CPP $CPPFLAGS'
57 ac_compile='$CCAS -c $CCASFLAGS $CPPFLAGS dnl
58 conftest.$ac_ext >&AS_MESSAGE_LOG_FD'
59 ac_link='$CCAS -oconftest$ac_exeext $CCASFLAGS $CPPFLAGS $LDFLAGS dnl
60 conftest.$ac_ext $LIBS >&AS_MESSAGE_LOG_FD'])
62 AC_DEFUN([AC_LANG_PREPROC(CPPAS)], [AC_REQUIRE([AC_PROG_CPP])])
63 AC_DEFUN([AC_LANG_COMPILER(CPPAS)], [AC_REQUIRE([AM_PROG_AS])])
64 AC_DEFUN([AC_LANG_CONFTEST(CPPAS)],
65 [cat confdefs.h - <<_ACEOF >conftest.$ac_ext
70 dnl--------------------------------------------------------------------------
71 dnl Host-specific configuration.
73 dnl The table of CPU families and ABIs which we might support. Support is
74 dnl not uniform: each dispatched function might or might not have an
75 dnl implementation for any particular CPU/ABI combination.
76 AC_DEFUN([catacomb_CPU_FAMILIES],
77 [$1([i[[3-6]]86,cygwin], [x86], [win])
78 $1([i[[3-6]]86,*], [x86], [sysv])
79 $1([x86_64,cygwin], [amd64], [win])
80 $1([x86_64,*], [amd64], [sysv])
81 $1([arm,* | armv*,*], [armel], [std])
82 $1([aarch64,*], [arm64], [std])])
84 dnl A utility to clear the `seen' flags, used so as to process each CPU or
86 m4_define([catacomb_CLEAR_FLAGS],
87 [m4_ifdef([catacomb_seen_cpu/$2],
88 [m4_undefine([catacomb_seen_cpu/$2])])dnl
89 m4_ifdef([catacomb_seen_abi/$3],
90 [m4_undefine([catacomb_seen_abi/$3])])])
92 dnl Identify the current host.
93 case $host_cpu,$host_os in
94 m4_define([catacomb_CPU_CASE],
95 [$1) CPUFAM=$2 ABI=$3 ;;
97 catacomb_CPU_FAMILIES([catacomb_CPU_CASE])
98 *) CPUFAM=nil ABI=nil ;;
101 dnl Now check the assembler. We have target-specific requirements here, so
102 dnl we couldn't do this any earlier.
104 [whether the assembler is likely to work], [mdw_cv_gnuish_as],
105 [AC_LANG_PUSH([CPPAS])
106 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
110 .L\$_test = .L\$_test + 1
115 [mdw_cv_gnuish_as=yes], [mdw_cv_gnuish_as=no])
118 AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
121 .intel_syntax noprefix
129 [:], [mdw_cv_gnuish_as=no])
132 AC_LANG_POP([CPPAS])])
133 AM_CONDITIONAL([GNUISH_AS], [test $mdw_cv_gnuish_as = yes])
134 if test $mdw_cv_gnuish_as = no; then CPUFAM=nil ABI=nil; fi
136 dnl A hairy macro used to set the `CPUFAM_...' and `ABI_...' variables. We
137 dnl basically need to do the same thing for the family and ABI, so it's worth
138 dnl some effort to hide the ugliness.
139 m4_define([catacomb_DEFINE_CPU_OR_ABI],
142 [m4_ifdef([catacomb_seen_$3/$$2], [],
144 AC_DEFINE([$4]m4_translit([$$2], [a-z], [A-Z]), [1], [$5])
145 ;;m4_define([catacomb_seen_$3/$$2], [t])])])
146 catacomb_CPU_FAMILIES([_def])
148 *) AC_MSG_ERROR([BUG: unexpected $1 \`$1']) ;;
151 dnl Now that's out the way, we can explain what we're doing.
152 AC_MSG_CHECKING([CPU family and ABI])
154 dnl Figure out the target CPU family and ABI.
155 catacomb_CPU_FAMILIES([catacomb_CLEAR_FLAGS])
156 catacomb_DEFINE_CPU_OR_ABI([CPUFAM], [2], [cpu],
157 [CPUFAM_], [Define if target CPU is \`$][2\'.])
158 catacomb_DEFINE_CPU_OR_ABI([ABI], [3], [abi],
159 [ABI_], [Define if target ABI is \`$][3\'.])
161 dnl Establish Automake conditions for things.
162 catacomb_CPU_FAMILIES([catacomb_CLEAR_FLAGS])
163 m4_define([catacomb_COND_CPU],
164 [m4_define([_CPU], m4_translit([$2], [a-z], [A-Z]))
165 m4_define([_ABI], m4_translit([$3], [a-z], [A-Z]))
166 AM_CONDITIONAL([CPUABI_]_CPU[_]_ABI, [test x$CPUFAM/$ABI = x$2/$3])
167 m4_ifdef([catacomb_seen_cpu/$2], [],
168 [AM_CONDITIONAL([CPUFAM_]_CPU, [test x$CPUFAM = x$2])dnl
169 m4_define([catacomb_seen_cpu/$2], [t])])
170 m4_ifdef([catacomb_seen_abi/$3], [],
171 [AM_CONDITIONAL([ABI_]_ABI, [test x$ABI = x$3])dnl
172 m4_define([catacomb_seen_abi/$3], [t])])])
173 catacomb_CPU_FAMILIES([catacomb_COND_CPU])
174 AM_CONDITIONAL([KNOWN_CPUFAM], [test x$CPUFAM != xnil])
176 dnl Report on what we found.
178 nil) AC_MSG_RESULT([not supported]) ;;
179 *) AC_MSG_RESULT([$CPUFAM/$ABI]) ;;
182 dnl--------------------------------------------------------------------------
183 dnl CPU-specific assembler features.
190 [whether the assembler understands ARMv8 crypto extensions],
191 [mdw_cv_as_armv8_crypto],
192 [AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
194 .fpu crypto-neon-fp-armv8
204 [mdw_cv_as_armv8_crypto=yes],
205 [mdw_cv_as_armv8_crypto=no])])
209 : ${mdw_cv_as_armv8_crypto=no}
210 AM_CONDITIONAL([HAVE_AS_ARMV8_CRYPTO], [test $mdw_cv_as_armv8_crypto = yes])
211 if test $mdw_cv_as_armv8_crypto = yes; then
212 AC_DEFINE([HAVE_AS_ARMV8_CRYPTO], [1],
213 [Define to 1 if your ARM assembler supports the ARMv8 crypto instructions.])
216 dnl--------------------------------------------------------------------------
217 dnl C programming environment.
223 dnl Find out if we're cross-compiling.
224 AM_CONDITIONAL([CROSS_COMPILING], [test "$cross_compiling" = yes])
226 dnl Various standard types.
227 AC_CHECK_TYPE([pid_t], [],
228 [AC_DEFINE([pid_t], [int],
229 [Define to `int' if <sys/types.h> does not define])])
231 AC_CHECK_TYPE([ssize_t], [],
232 [AC_DEFINE([ssize_t], [int],
233 [Define to `int' if <sys/types.h> does not define])])
234 AC_CHECK_TYPE([socklen_t], [],
235 [AC_DEFINE([socklen_t], [int],
236 [Define to `int' if <sys/socket.h> does not define])],
238 #include <sys/socket.h>
241 dnl The maths library.
242 mdw_ORIG_LIBS=$LIBS LIBS=$CATACOMB_LIBS
243 AC_SEARCH_LIBS([log], [m])
244 AC_SEARCH_LIBS([sqrt], [m])
245 CATACOMB_LIBS=$LIBS LIBS=$mdw_ORIG_LIBS
247 dnl Logging is weird under Termux. Unfortunately, it involves macros, so we
248 dnl have to do this the hard way.
250 [library needed for syslog], [mdw_cv_syslog_lib],
251 [mdw_ORIG_LIBS=$LIBS LIBS=
253 AC_TRY_LINK([#include <syslog.h>],
254 [openlog("test", LOG_PID, LOG_DAEMON);
255 syslog(LOG_ERR, "this is a test");],
258 *,t) mdw_cv_syslog_lib=${LIBS:-none}; break ;;
259 0,nil) LIBS="-llog" ;;
260 1,nil) AC_MSG_ERROR("failed to link test program") ;;
263 LIBS=$mdw_ORIG_LIBS])
264 case $mdw_cv_syslog_lib in
266 *) LOGLIBS=$mdw_cv_syslog_lib ;;
270 dnl Find out whether very long integer types are available.
271 AC_CHECK_HEADERS([stdint.h])
272 AC_SUBST([have_stdint_h])
275 dnl Some equipment wanted for checking CPU features at runtime.
276 AC_CHECK_HEADERS([asm/hwcap.h])
277 AC_CHECK_HEADERS([sys/auxv.h])
278 AC_CHECK_HEADERS([linux/auxvec.h])
279 AC_CHECK_FUNCS([getauxval])
281 dnl Find the bit lengths of the obvious integer types. This will be useful
282 dnl when deciding on a representation for multiprecision integers.
283 type_bits="" type_bits_sep=""
284 AC_DEFUN([catacomb_UINT_BITS],
285 [mdw_UINT_BITS([$2], [$1])
286 type_bits="$type_bits$type_bits_sep('$1', $[]$1_bits)"
288 catacomb_UINT_BITS([uchar], [unsigned char])
289 catacomb_UINT_BITS([ushort], [unsigned short])
290 catacomb_UINT_BITS([uint], [unsigned int])
291 catacomb_UINT_BITS([ulong], [unsigned long])
292 if test "$ac_cv_c_long_long" = "yes"; then
293 catacomb_UINT_BITS([ullong], [unsigned long long])
295 if test "$ac_cv_header_stdint_h" = "yes"; then
296 catacomb_UINT_BITS([uintmax], [uintmax_t])
298 AC_SUBST([type_bits])
300 dnl Determine the limits of common C integer types.
301 limits="" limits_sep=""
302 AC_DEFUN([catacomb_COMPILE_TIME_CONSTANT],
308 AC_CACHE_CHECK([compile-time value of $2], [mdw_cv_constant_$3],
309 [mdw_PROBE_CONSTANT([mdw_cv_constant_$3], [$2], [$4])])
310 $1=$mdw_cv_constant_$3
313 AC_DEFUN([catacomb_LIMIT],
314 [catacomb_COMPILE_TIME_CONSTANT([lo], [$2], [$1_min],
316 #include <stddef.h>])
317 catacomb_COMPILE_TIME_CONSTANT([hi], [$3], [$1_max],
319 #include <stddef.h>])
320 limits="$limits$limits_sep('$1', $lo, $hi)" limits_sep=", "])
321 catacomb_LIMIT([SCHAR], [SCHAR_MIN], [SCHAR_MAX])
322 catacomb_LIMIT([CHAR], [CHAR_MIN], [CHAR_MAX])
323 catacomb_LIMIT([UCHAR], [=0], [UCHAR_MAX])
324 catacomb_LIMIT([UINT8], [=0], [=0xff])
325 catacomb_LIMIT([SHRT], [SHRT_MIN], [SHRT_MAX])
326 catacomb_LIMIT([USHRT], [=0], [USHRT_MAX])
327 catacomb_LIMIT([UINT16], [=0], [=0xffff])
328 catacomb_LIMIT([INT], [INT_MIN], [INT_MAX])
329 catacomb_LIMIT([UINT], [=0], [UINT_MAX])
330 catacomb_LIMIT([LONG], [LONG_MIN], [LONG_MAX])
331 catacomb_LIMIT([ULONG], [=0], [ULONG_MAX])
332 catacomb_LIMIT([UINT32], [=0], [=0xffffffff])
333 if test "$ac_cv_c_long_long" = "yes"; then
334 catacomb_LIMIT([LLONG], [LLONG_MIN], [LLONG_MAX])
335 catacomb_LIMIT([ULLONG], [=0], [ULLONG_MAX])
337 catacomb_LIMIT([SIZET], [=0], [~(size_t)0])
340 dnl Figure out other aspects of the implementation's arithmetic.
341 AC_CACHE_CHECK([whether negative numbers use two's complement],
342 [catacomb_cv_neg_twoc],
344 [#include <limits.h>],
345 [int check[2*!!(-INT_MAX == INT_MIN + 1) - 1];],
346 [catacomb_cv_neg_twoc=yes],
347 [catacomb_cv_neg_twoc=no])])
348 case $catacomb_cv_neg_twoc in
350 AC_DEFINE([NEG_TWOC], [1],
351 [Define if signed numbers are represented in two's complement.])
355 dnl Functions used for noise-gathering.
356 AC_CHECK_FUNCS([setgroups])
357 AC_CHECK_HEADERS([linux/random.h])
358 mdw_ORIG_LIBS=$LIBS LIBS=$CATACOMB_LIBS
359 AC_SEARCH_LIBS([clock_gettime], [rt])
360 CATACOMB_LIBS=$LIBS LIBS=$mdw_ORIG_LIBS
361 if test "$ac_cv_search_clock_gettime" != no; then
362 AC_DEFINE([HAVE_CLOCK_GETTIME], [1],
363 [Define if you have the \`clock_gettime' function.])
365 AC_CHECK_FUNCS([getentropy])
366 AC_CACHE_CHECK([whether the freewheel noise generator will work],
367 [catacomb_cv_freewheel],
370 #include <sys/time.h>],
371 [struct itimerval itv = { { 0, 0 }, { 0, 5000 } };
373 setitimer(ITIMER_REAL, &itv, 0);
375 [catacomb_cv_freewheel=yes],
376 [catacomb_cv_freewheel=no])])
377 case $catacomb_cv_freewheel in
379 AC_DEFINE([USE_FREEWHEEL], [1],
380 [Define if you want to use the freewheel noise generator.])
384 dnl Support for the passphrase pixie.
386 AC_SEARCH_LIBS([socket], [socket])
387 AC_SUBST([PIXIE_LIBS], [$LIBS])
390 dnl Memory locking support.
391 AC_CHECK_FUNCS([mlock])
393 dnl See if we can find Valgrind's header files.
394 AC_CHECK_HEADER([valgrind/memcheck.h],
395 AC_DEFINE([HAVE_VALGRIND_H], [1],
396 [Define if the Valgrind header files are available.])
399 dnl Set the master libraries we need.
400 AC_SUBST([CATACOMB_LIBS])
402 dnl Necessary support libraries.
403 PKG_CHECK_MODULES([mLib], [mLib >= 2.2.2.1])
404 AM_CFLAGS="$AM_CFLAGS $mLib_CFLAGS"
406 dnl--------------------------------------------------------------------------
409 dnl Make sure we have a suitable version.
410 AM_PATH_PYTHON([2.5])
412 dnl--------------------------------------------------------------------------
413 dnl Special debugging options.
416 [AS_HELP_STRING([--enable-mpw], [force small-width mp digits])],
417 [case "$enableval" in
419 AC_DEFINE([FORCE_MPW_SHORT], [1],
420 [Define to force small-width mp digits.])
423 AC_DEFINE([FORCE_MPW_CUSSID], [1],
424 [Define to force strange-width mp digits.])
428 dnl--------------------------------------------------------------------------
431 AC_CONFIG_HEADER([config/config.h])
445 dnl----- That's all, folks --------------------------------------------------