configure.ac 71.7 KB
Newer Older
1
# This file is part of SWIFT.
2
# Copyright (C) 2012 pedro.gonnet@durham.ac.uk.
3
#               2016 p.w.draper@durham.ac.uk.
4
#
Pedro Gonnet's avatar
Pedro Gonnet committed
5
6
7
8
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
9
#
Pedro Gonnet's avatar
Pedro Gonnet committed
10
11
12
13
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
14
#
Pedro Gonnet's avatar
Pedro Gonnet committed
15
16
17
# You should have received a copy of the GNU General Public License
# along with this program.  If not, see <http://www.gnu.org/licenses/>.

18
# Init the project.
19
AC_INIT([SWIFT],[0.8.4],[https://gitlab.cosma.dur.ac.uk/swift/swiftsim])
20
swift_config_flags="$*"
21

22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
#  We want to stop when given unrecognised options. No subdirs so this is safe.
enable_option_checking=${enable_option_checking:-fatal}
if test -n "$ac_unrecognized_opts"; then
    case $enable_option_checking in
        no)
        ;;
        fatal)
            { $as_echo "$as_me: error: unrecognized options: $ac_unrecognized_opts" >&2
              { (exit 1); exit 1; }; }
        ;;
        *)
            $as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2
        ;;
    esac
fi

38
AC_COPYRIGHT
39
AC_CONFIG_SRCDIR([src/space.c])
40
AC_CONFIG_AUX_DIR([.])
lhausamm's avatar
lhausamm committed
41
AM_INIT_AUTOMAKE([subdir-objects])
Pedro Gonnet's avatar
Pedro Gonnet committed
42

43
# Add local macro collection.
Pedro Gonnet's avatar
Pedro Gonnet committed
44
45
AC_CONFIG_MACRO_DIR([m4])

46
47
48
49
# Stop default CFLAGS from anyone except the environment.
: ${CFLAGS=""}

# Generate header file.
Pedro Gonnet's avatar
Pedro Gonnet committed
50
51
AM_CONFIG_HEADER(config.h)

52
53
# Find and test the compiler.
AX_CHECK_ENABLE_DEBUG
Peter W. Draper's avatar
Peter W. Draper committed
54
AC_PROG_CC
55
56
AM_PROG_CC_C_O

57
# If debug is selected then we also define SWIFT_DEVELOP_MODE to control
Peter W. Draper's avatar
Typo    
Peter W. Draper committed
58
# any developer code options.
59
60
61
62
if test "x$ax_enable_debug" != "xno"; then
   AC_DEFINE([SWIFT_DEVELOP_MODE],1,[Enable developer code options])
fi

63
64
65
66
# C++ in GCC 6 and above has an issue with undefined the min() and max()
# macros. This hack works around that.
AC_DEFINE([_GLIBCXX_INCLUDE_NEXT_C_HEADERS],1,[Hack for min() and max() using g++ 6+])

67
68
69
# Enable POSIX and platform extension preprocessor macros.
AC_USE_SYSTEM_EXTENSIONS

70
71
72
73
# Check for compiler version and vendor.
AX_COMPILER_VENDOR
AX_COMPILER_VERSION

74
75
76
#  Restrict support.
AC_C_RESTRICT

lhausamm's avatar
lhausamm committed
77
78
79
# logger
AC_ARG_ENABLE([logger],
	[AS_HELP_STRING([--enable-logger],
80
		[enable the particle logger]
lhausamm's avatar
lhausamm committed
81
82
83
84
85
86
87
88
	)],
	[with_logger="${enableval}"],
	[with_logger="no"]
)

if test "$with_logger" = "yes"; then
   AC_DEFINE([WITH_LOGGER], 1, [logger enabled])
fi
89
AM_CONDITIONAL([HAVELOGGER],[test $with_logger = "yes"])
lhausamm's avatar
lhausamm committed
90

91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
# Interprocedural optimization support. Needs special handling for linking and
# archiving as well as compilation with Intels, needs to be done before
# libtool is configured (to use correct LD).
AC_ARG_ENABLE([ipo],
   [AS_HELP_STRING([--enable-ipo],
     [Enable interprocedural optimization @<:@no/yes@:>@]
   )],
   [enable_ipo="$enableval"],
   [enable_ipo="no"]
)

if test "$enable_ipo" = "yes"; then
   if test "$ax_cv_c_compiler_vendor" = "intel"; then
      CFLAGS="$CFLAGS -ip -ipo"
      LDFLAGS="$LDFLAGS -ipo"
      : ${AR="xiar"}
      : ${LD="xild"}
      AC_MSG_RESULT([added Intel interprocedural optimization support])
   elif test "$ax_cv_c_compiler_vendor" = "gnu"; then
      CFLAGS="$CFLAGS -flto"
      LDFLAGS="$LDFLAGS -flto"
112
113
114
115
116
      AX_COMPARE_VERSION($ax_cv_c_compiler_version, [ge], [5.0.0],
                          [
      : ${AR="gcc-ar"}
      : ${RANLIB="gcc-ranlib"}
                          ], [:] )
117
118
      AC_MSG_RESULT([added GCC interprocedural optimization support])
   elif test "$ax_cv_c_compiler_vendor" = "clang"; then
Peter W. Draper's avatar
Peter W. Draper committed
119
120
      CFLAGS="$CFLAGS -flto -fuse-ld=gold"
      LDFLAGS="$LDFLAGS -XCClinker -fuse-ld=gold"
121
      : ${AR="llvm-ar"}
Peter W. Draper's avatar
Peter W. Draper committed
122
      : ${LD="ld.gold"}
123
      : ${RANLIB="llvm-ranlib"}
124
125
126
127
128
129
      AC_MSG_RESULT([added LLVM interprocedural optimization support])
   else
      AC_MSG_WARN([Compiler does not support interprocedural optimization])
   fi
fi

130
131
# Check for MPI. Need to do this before characterising the compiler (C99 mode),
# as this changes the compiler.
132
133
134
135
# We should consider using AX_PROG_CC_MPI to replace AC_PROG_CC when compiling
# whole applications. There are issues with mixing compilers when using this
# macro. See
# http://lists.gnu.org/archive/html/autoconf-archive-maintainers/2011-05/msg00004.html.
136
AC_ARG_ENABLE([mpi],
137
    [AS_HELP_STRING([--enable-mpi],
138
      [Compile with functionality for distributed-memory parallelism using MPI @<:@yes/no@:>@]
139
140
141
142
    )],
    [enable_mpi="$enableval"],
    [enable_mpi="yes"]
)
143
good_mpi="yes"
144
145
if test "$enable_mpi" = "yes"; then
    AX_MPI([CC="$MPICC" AC_DEFINE(HAVE_MPI, 1, [Define if you have the MPI library.]) ])
146
    MPI_LIBRARY="Unknown MPI"
147
148
149

    # Various MPI implementations require additional libraries when also using
    # threads. Use mpirun (on PATH) as that seems to be only command with
150
151
152
153
154
155
    # version flag, allow MPIRUN to override for systems that insist on
    # a non-standard name (PRACE).
    : ${MPIRUN='mpirun'}
    if test "$MPIRUN" = "mpirun"; then
       AC_PATH_PROG([MPIRUN],[mpirun],[notfound])
    fi
156
    if test "$MPIRUN" = "notfound"; then
157
158
       # This may not be fatal (some systems do not allow mpirun on
       # development nodes)., so push on.
159
160
161
162
163
164
165
166
167
168
169
170
       AC_MSG_WARN([Cannot find mpirun command on PATH, thread support may not be correct])
    else
       # Special options we know about.
       # Intel: -mt_mpi
       # PLATFORM: -lmtmpi
       # OpenMPI: nothing, but library should be built correctly.
       # Set MPI_THREAD_LIBS and add to linker commands as necessary.
       AC_MSG_CHECKING([MPI threads options])
       version=`$MPIRUN -version 2>&1`
       case "$version" in
         *Intel*MPI*)
            MPI_THREAD_LIBS="-mt_mpi"
171
            MPI_LIBRARY="Intel MPI"
172
173
174
175
            AC_MSG_RESULT([Intel MPI])
         ;;
         *Platform*)
            MPI_THREAD_LIBS="-lmtmpi"
176
            MPI_LIBRARY="PLATFORM MPI"
177
178
179
180
            AC_MSG_RESULT([PLATFORM MPI])
         ;;
         *"Open MPI"*)
            MPI_THREAD_LIBS=""
181
            MPI_LIBRARY="Open MPI"
182
            AC_MSG_RESULT([Open MPI])
183
184
185
186
187
188
189
190
191
            #  OpenMPI should be 1.8.6 or later, if not complain.
            #  Version is last word on first line of -version output.
            revision=`mpirun -version 2>&1 | grep "Open MPI" | awk '{print $NF}'`
            AX_COMPARE_VERSION( $revision, [ge], [1.8.6],,[good_mpi="no"] )
            if test "$good_mpi" = "no"; then
                AC_MSG_WARN([
    Open MPI version should be at least 1.8.6 (is $revision)])
                enable_mpi="yes (but with warning)"
            fi
192
193
194
195
196
197
198
199
         ;;
         *)
            MPI_THREAD_LIBS=""
            AC_MSG_RESULT([unknown])
         ;;
       esac
       AC_SUBST([MPI_THREAD_LIBS])
    fi
200
    AC_DEFINE_UNQUOTED([SWIFT_MPI_LIBRARY], ["$MPI_LIBRARY"], [The MPI library name, if known.])
201
fi
202
AM_CONDITIONAL([HAVEMPI],[test $enable_mpi = "yes"])
203

Peter W. Draper's avatar
Peter W. Draper committed
204
# Indicate that MPIRUN can be modified by an environment variable
205
206
AC_ARG_VAR(MPIRUN, Path to the mpirun command if non-standard)

207
208
209
# Add libtool support (now that CC is defined).
LT_INIT

210
# Need C99 and inline support.
Pedro Gonnet's avatar
Pedro Gonnet committed
211
AC_PROG_CC_C99
Peter W. Draper's avatar
Peter W. Draper committed
212
213
AC_C_INLINE

214
215
216
217
# If debugging try to show inlined functions.
if test "x$enable_debug" = "xyes"; then
   #  Show inlined functions.
   if test "$ax_cv_c_compiler_vendor" = "gnu"; then
218
219
220
221
222
223
      # Would like to use -gdwarf and let the compiler pick a good version
      # but that doesn't always work.
      AX_CHECK_COMPILE_FLAG([-gdwarf -fvar-tracking-assignments],
        [inline_EXTRA_FLAGS="-gdwarf -fvar-tracking-assignments"],
        [inline_EXTRA_FLAGS="-gdwarf-2 -fvar-tracking-assignments"])
      CFLAGS="$CFLAGS $inline_EXTRA_FLAGS"
224
225
226
227
228
   elif test "$ax_cv_c_compiler_vendor" = "intel"; then
      CFLAGS="$CFLAGS -debug inline-debug-info"
   fi
fi

229
230
231
# Check if task debugging is on.
AC_ARG_ENABLE([task-debugging],
   [AS_HELP_STRING([--enable-task-debugging],
232
     [Store extra information for generating task dump files @<:@yes/no@:>@]
233
234
235
236
237
238
239
240
   )],
   [enable_task_debugging="$enableval"],
   [enable_task_debugging="no"]
)
if test "$enable_task_debugging" = "yes"; then
   AC_DEFINE([SWIFT_DEBUG_TASKS],1,[Enable task debugging])
fi

241
242
243
244
245
246
247
248
249
250
# Check if threadpool debugging is on.
AC_ARG_ENABLE([threadpool-debugging],
   [AS_HELP_STRING([--enable-threadpool-debugging],
     [Store threadpool mapper timing information and generate threadpool dump files @<:@yes/no@:>@]
   )],
   [enable_threadpool_debugging="$enableval"],
   [enable_threadpool_debugging="no"]
)
if test "$enable_threadpool_debugging" = "yes"; then
   AC_DEFINE([SWIFT_DEBUG_THREADPOOL],1,[Enable threadpool debugging])
251
   LDFLAGS="$LDFLAGS -rdynamic"
252
253
fi

254
255
256
257
258
259
260
261
262
263
264
265
# Check if the general timers are switched on.
AC_ARG_ENABLE([timers],
   [AS_HELP_STRING([--enable-timers],
     [Activate the basic timers @<:@yes/no@:>@]
   )],
   [enable_timers="$enableval"],
   [enable_timers="no"]
)
if test "$enable_timers" = "yes"; then
   AC_DEFINE([SWIFT_USE_TIMERS],1,[Enable individual timers])
fi

266
267
268
269
270
271
272
273
274
275
276
277
# Check if expensive debugging is on.
AC_ARG_ENABLE([debugging-checks],
   [AS_HELP_STRING([--enable-debugging-checks],
     [Activate expensive consistency checks @<:@yes/no@:>@]
   )],
   [enable_debugging_checks="$enableval"],
   [enable_debugging_checks="no"]
)
if test "$enable_debugging_checks" = "yes"; then
   AC_DEFINE([SWIFT_DEBUG_CHECKS],1,[Enable expensive debugging])
fi

Loic Hausammann's avatar
Loic Hausammann committed
278
279
280
281
282
283
284
285
286
287
288
289
# Check if cell graph is on.
AC_ARG_ENABLE([cell-graph],
   [AS_HELP_STRING([--enable-cell-graph],
     [Activate the cell graph @<:@yes/no@:>@]
   )],
   [enable_cell_graph="$enableval"],
   [enable_cell_graph="no"]
)
if test "$enable_cell_graph" = "yes"; then
   AC_DEFINE([SWIFT_CELL_GRAPH],1,[Enable cell graph])
fi

290
291
292
293
294
295
296
297
298
299
300
301
# Check if using our custom icbrtf is enalbled.
AC_ARG_ENABLE([custom-icbrtf],
   [AS_HELP_STRING([--enable-custom-icbrtf],
     [Use SWIFT's custom icbrtf function instead of the system cbrtf @<:@yes/no@:>@]
   )],
   [enable_custom_icbrtf="$enableval"],
   [enable_custom_icbrtf="no"]
)
if test "$enable_custom_icbrtf" = "yes"; then
   AC_DEFINE([WITH_ICBRTF],1,[Enable custom icbrtf])
fi

302
303
304
305
306
307
308
309
310
311
312
313
# Check whether we want to default to naive cell interactions
AC_ARG_ENABLE([naive-interactions],
   [AS_HELP_STRING([--enable-naive-interactions],
     [Activate use of naive cell interaction functions @<:@yes/no@:>@]
   )],
   [enable_naive_interactions="$enableval"],
   [enable_naive_interactions="no"]
)
if test "$enable_naive_interactions" = "yes"; then
   AC_DEFINE([SWIFT_USE_NAIVE_INTERACTIONS],1,[Enable use of naive cell interaction functions])
fi

314
315
316
317
318
# Check whether we want to default to naive cell interactions (stars)
AC_ARG_ENABLE([naive-interactions-stars],
   [AS_HELP_STRING([--enable-naive-interactions-stars],
     [Activate use of naive cell interaction functions for stars @<:@yes/no@:>@]
   )],
Loic Hausammann's avatar
Loic Hausammann committed
319
320
   [enable_naive_interactions_stars="$enableval"],
   [enable_naive_interactions_stars="no"]
321
)
Loic Hausammann's avatar
Loic Hausammann committed
322
if test "$enable_naive_interactions_stars" = "yes"; then
323
324
325
   AC_DEFINE([SWIFT_USE_NAIVE_INTERACTIONS_STARS],1,[Enable use of naive cell interaction functions for stars])
fi

326
327
328
329
330
331
332
333
334
335
336
337
338
339
# Check if gravity force checks are on for some particles.
AC_ARG_ENABLE([gravity-force-checks],
   [AS_HELP_STRING([--enable-gravity-force-checks],
     [Activate expensive brute-force gravity checks for a fraction 1/N of all particles @<:@N@:>@]
   )],
   [gravity_force_checks="$enableval"],
   [gravity_force_checks="no"]
)
if test "$gravity_force_checks" == "yes"; then
   AC_MSG_ERROR(Need to specify the fraction of particles to check when using --enable-gravity-force-checks!)
elif test "$gravity_force_checks" != "no"; then
   AC_DEFINE_UNQUOTED([SWIFT_GRAVITY_FORCE_CHECKS], [$enableval] ,[Enable gravity brute-force checks])
fi

340
341
342
343
344
345
346
347
348
349
350
351
# Check whether we want to switch on glass making
AC_ARG_ENABLE([glass-making],
   [AS_HELP_STRING([--enable-glass-making],
     [Activate the glass-making procedure by reversing the sign of gravity @<:@yes/no@:>@]
   )],
   [gravity_glass_making="$enableval"],
   [gravity_glass_making="no"]
)
if test "$gravity_glass_making" == "yes"; then
   AC_DEFINE([SWIFT_MAKE_GRAVITY_GLASS], 1, [Make the code run in a way to produce a glass file for gravity/cosmology])
fi

352
353
354
355
356
357
358
359
360
361
362
363
364
365
# Check if we want to zero the gravity forces for all particles below some ID.
AC_ARG_ENABLE([no-gravity-below-id],
   [AS_HELP_STRING([--enable-no-gravity-below-id],
     [Zeros the gravitational acceleration of all particles with an ID smaller than @<:@N@:>@]
   )],
   [no_gravity_below_id="$enableval"],
   [no_gravity_below_id="no"]
)
if test "$no_gravity_below_id" == "yes"; then
   AC_MSG_ERROR(Need to specify the ID below which particles get zero forces when using --enable-no-gravity-below-id!)
elif test "$no_gravity_below_id" != "no"; then
   AC_DEFINE_UNQUOTED([SWIFT_NO_GRAVITY_BELOW_ID], [$enableval] ,[Particles with smaller ID than this will have zero gravity forces])
fi

Loic Hausammann's avatar
Loic Hausammann committed
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
# Check if we want to use boundary particles.
AC_ARG_ENABLE([boundary-particles],
   [AS_HELP_STRING([--enable-boundary-particles],
     [Set all particles with an ID smaller than @<:@N@:>@ as boundary particles (i.e. receive zero gravity + hydro forces).]
   )],
   [boundary_particles="$enableval"],
   [boundary_particles="no"]
)
if test "$boundary_particles" == "yes"; then
   AC_MSG_ERROR(Need to specify the ID below which particles get zero forces when using --enable-boundary-particles!)
elif test "$boundary_particles" != "no"; then
   AC_DEFINE_UNQUOTED([SWIFT_NO_GRAVITY_BELOW_ID], [$enableval] ,[Particles with smaller ID than this will have zero gravity forces])
   AC_DEFINE_UNQUOTED([SWIFT_BOUNDARY_PARTICLES], [$enableval] ,[Particles with smaller ID than this will be considered as boundaries.])
fi

Josh Borrow's avatar
Josh Borrow committed
381
382
383
# Check whether we have any of the ARM v8.1 tick timers
AX_ASM_ARM_PMCCNTR
AX_ASM_ARM_CNTVCT
384

385
386
387
388
389
390
391
392
393
394
395
396
# See if we want memuse reporting.
AC_ARG_ENABLE([memuse-reports],
   [AS_HELP_STRING([--enable-memuse-reports],
     [Output reports about significant memory allocations@<:@yes/no@:>@]
   )],
   [enable_memuse_reports="$enableval"],
   [enable_memuse_reports="no"]
)
if test "$enable_memuse_reports" = "yes"; then
   AC_DEFINE([SWIFT_MEMUSE_REPORTS],1,[Enable memory usage reports])
fi

397
398
399
400
401
402
403
404
405
406
407
408
# See if we want mpi reporting.
AC_ARG_ENABLE([mpiuse-reports],
   [AS_HELP_STRING([--enable-mpiuse-reports],
     [Output reports about MPI tasks requests@<:@yes/no@:>@]
   )],
   [enable_mpiuse_reports="$enableval"],
   [enable_mpiuse_reports="no"]
)
if test "$enable_mpiuse_reports" = "yes"; then
   AC_DEFINE([SWIFT_MPIUSE_REPORTS],1,[Enable MPI task reports])
fi

409

410
# Define HAVE_POSIX_MEMALIGN if it works.
Pedro Gonnet's avatar
Pedro Gonnet committed
411
412
AX_FUNC_POSIX_MEMALIGN

413
414
# Only optimize if allowed, otherwise assume user will set CFLAGS as
# appropriate.
415
AC_ARG_ENABLE([optimization],
416
   [AS_HELP_STRING([--enable-optimization],
417
     [Enable compile time optimization flags for host @<:@yes/no@:>@]
418
419
420
   )],
   [enable_opt="$enableval"],
   [enable_opt="yes"]
421
422
)

423
424
425
426
427
428
429
430
431
432
433
434
#  Disable vectorisation for known compilers. This switches off optimizations
#  that could be enabled above, so in general should be appended. Slightly odd
#  implementation as want to describe as --disable-vec, but macro is enable
#  (there is no enable action).
AC_ARG_ENABLE([vec],
   [AS_HELP_STRING([--disable-vec],
     [Disable vectorization]
   )],
   [enable_vec="$enableval"],
   [enable_vec="yes"]
)

435
#  Disable hand written vectorisation. Slightly odd implementation as want
436
437
438
439
440
441
442
443
444
# to describe as --disable-hand-vec, but macro is enable (there is no enable action).
AC_ARG_ENABLE([hand-vec],
   [AS_HELP_STRING([--disable-hand-vec],
     [Disable intrinsic vectorization]
   )],
   [enable_hand_vec="$enableval"],
   [enable_hand_vec="yes"]
)

445
446
HAVEVECTORIZATION=0

447
if test "$enable_opt" = "yes" ; then
448

449
   # Choose the best flags for this compiler and architecture
450
451
452
   ac_test_CFLAGS="no"
   AX_CC_MAXOPT
   ac_test_CFLAGS="yes"
453

454
   detected_ax_gcc_arch=`echo $ax_gcc_arch | awk '{print $1;}'`
455
456
   detected_ax_icc_flag=`echo $icc_flags | awk '{print $1;}'`

457
458
   # Choose the best flags for the gravity sub-library on this compiler and architecture
   if test "$ax_cv_c_compiler_vendor" = "intel"; then
459
      if test "$detected_ax_icc_flag" = "-xCORE-AVX512"; then
460
         GRAVITY_CFLAGS="$GRAVITY_CFLAGS -qopt-zmm-usage=high"
461
462
463
464
465
      else
         AC_MSG_WARN([No additional flags needed for gravity on this platform])
      fi
   elif test "$ax_cv_c_compiler_vendor" = "gnu"; then
      if test "$detected_ax_gcc_arch" = "skylake-avx512"; then
466
         GRAVITY_CFLAGS="$GRAVITY_CFLAGS -mprefer-vector-width=512"
467
468
469
470
471
472
      else
         AC_MSG_WARN([No additional flags needed for gravity on this platform])
      fi
   else
      AC_MSG_WARN([Do not know what best gravity vectorization flags to choose for this compiler])
   fi
473
474
   AC_ARG_VAR([GRAVITY_CFLAGS], [C compiler flags added to the basic CFLAGS to compile
   				 the gravity-related files.])
475

476
477
478
479
480
481
482
483
484
   # Check SSE & AVX support (some overlap with AX_CC_MAXOPT).
   # Don't use the SIMD_FLAGS result with Intel compilers. The -x<code>
   # value from AX_CC_MAXOPT should be sufficient.
   AX_EXT
   if test "$SIMD_FLAGS" != ""; then
       if test "$ax_cv_c_compiler_vendor" != "intel"; then
           CFLAGS="$CFLAGS $SIMD_FLAGS"
       fi
   fi
485
486
487
488
489
490
491
492
493
494
495
496
497
498

   if test "$enable_vec" = "no"; then
      if test "$ax_cv_c_compiler_vendor" = "intel"; then
      	 CFLAGS="$CFLAGS -no-vec -no-simd"
      	 AC_MSG_RESULT([disabled Intel vectorization])
      elif test "$ax_cv_c_compiler_vendor" = "gnu"; then
      	 CFLAGS="$CFLAGS -fno-tree-vectorize"
      	 AC_MSG_RESULT([disabled GCC vectorization])
      elif test "$ax_cv_c_compiler_vendor" = "clang"; then
         CFLAGS="$CFLAGS -fno-vectorize -fno-slp-vectorize"
         AC_MSG_RESULT([disabled clang vectorization])
      else
         AC_MSG_WARN([Do not know how to disable vectorization for this compiler])
      fi
499
   elif test "$enable_hand_vec" = "yes"; then
James Willis's avatar
James Willis committed
500
      AC_DEFINE([WITH_VECTORIZATION],1,[Enable hand-written vectorization])
501
502
      HAVEVECTORIZATION=1
   fi
503
fi
504
505
AM_CONDITIONAL([HAVEVECTORIZATION],[test -n "$HAVEVECTORIZATION"])

Peter W. Draper's avatar
Peter W. Draper committed
506

507
# Add address sanitizer options to flags, if requested. Only useful for GCC
508
# version 4.8 and later and clang.
509
AC_ARG_ENABLE([sanitizer],
510
   [AS_HELP_STRING([--enable-sanitizer],
511
     [Enable memory error detection using address sanitizer @<:@no/yes@:>@]
512
513
514
   )],
   [enable_san="$enableval"],
   [enable_san="no"]
515
516
)

517
518
519
520
if test "$enable_san" = "yes"; then
   if test "$ax_cv_c_compiler_vendor" = "gnu"; then
      AX_COMPARE_VERSION( $ax_cv_c_compiler_version, [ge], [4.8.0],
                          [enable_san="yes"], [enable_san="no"] )
521
522
523
524
525
526
   elif test "$ax_cv_c_compiler_vendor" = "clang"; then
      AX_COMPARE_VERSION( $ax_cv_c_compiler_version, [ge], [3.2.0],
                          [enable_san="yes"], [enable_san="no"] )
   fi
   if test "$enable_san" = "yes"; then
      CFLAGS="$CFLAGS -fsanitize=address -fno-omit-frame-pointer"
527
      AC_MSG_RESULT([added address sanitizer support])
528
529
   else
      AC_MSG_WARN([Compiler does not support address sanitizer option])
530
531
532
   fi
fi

533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
# Add the undefined sanitizer option to flags. Only useful for GCC
# version 4.9 and later and clang to detected undefined code behaviour
# such as integer overflow and memory alignment issues.
AC_ARG_ENABLE([undefined-sanitizer],
   [AS_HELP_STRING([--enable-undefined-sanitizer],
     [Enable detection of code that causes undefined behaviour @<:@no/yes@:>@]
   )],
   [enable_ubsan="$enableval"],
   [enable_ubsan="no"]
)

if test "$enable_ubsan" = "yes"; then
   if test "$ax_cv_c_compiler_vendor" = "gnu"; then
      AX_COMPARE_VERSION( $ax_cv_c_compiler_version, [ge], [4.9.0],
                          [enable_ubsan="yes"], [enable_ubsan="no"] )
   elif test "$ax_cv_c_compiler_vendor" = "clang"; then
      AX_COMPARE_VERSION( $ax_cv_c_compiler_version, [ge], [3.7.0],
                          [enable_ubsan="yes"], [enable_ubsan="no"] )
   fi
   if test "$enable_ubsan" = "yes"; then
      CFLAGS="$CFLAGS -fsanitize=undefined"
      AC_MSG_RESULT([added undefined sanitizer support])
   else
      AC_MSG_WARN([Compiler does not support undefined sanitizer option])
   fi
fi

560
# Autoconf stuff.
Pedro Gonnet's avatar
Pedro Gonnet committed
561
562
563
564
AC_PROG_INSTALL
AC_PROG_MAKE_SET
AC_HEADER_STDC

565
# Check for the libraries we will need.
Pedro Gonnet's avatar
Pedro Gonnet committed
566
567
AC_CHECK_LIB(m,sqrt,,AC_MSG_ERROR(something is wrong with the math library!))

568
569
570
# Check for GSL. We test for this in the standard directories by default,
# and only disable if using --with-gsl=no or --without-gsl. When a value
# is given GSL must be found.
571
have_gsl="no"
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
AC_ARG_WITH([gsl],
    [AS_HELP_STRING([--with-gsl=PATH],
       [root directory where GSL is installed @<:@yes/no@:>@]
    )],
    [with_gsl="$withval"],
    [with_gsl="test"]
)
if test "x$with_gsl" != "xno"; then
   if test "x$with_gsl" != "xyes" -a "x$with_gsl" != "xtest" -a "x$with_gsl" != "x"; then
      GSL_LIBS="-L$with_gsl/lib -lgsl -lgslcblas"
      GSL_INCS="-I$with_gsl/include"
   else
      GSL_LIBS="-lgsl -lgslcblas"
      GSL_INCS=""
   fi
   #  GSL is not specified, so just check if we have it.
   if test "x$with_gsl" = "xtest"; then
Peter W. Draper's avatar
Peter W. Draper committed
589
      AC_CHECK_LIB([gslcblas],[cblas_dgemm],[have_gsl="yes"],[have_gsl="no"],$GSL_LIBS)
590
      if test "x$have_gsl" != "xno"; then
Peter W. Draper's avatar
Peter W. Draper committed
591
         AC_DEFINE([HAVE_LIBGSLCBLAS],1,[The GSL CBLAS library appears to be present.])
592
593
         AC_CHECK_LIB([gsl],[gsl_integration_qag],
            AC_DEFINE([HAVE_LIBGSL],1,[The GSL library appears to be present.]),
Peter W. Draper's avatar
Peter W. Draper committed
594
            [have_gsl="no"],$GSL_LIBS)
595
596
597
598
599
600
601
602
603
604
      fi
   else
      AC_CHECK_LIB([gslcblas],[cblas_dgemm],
         AC_DEFINE([HAVE_LIBGSLCBLAS],1,[The GSL CBLAS library appears to be present.]),
         AC_MSG_ERROR(something is wrong with the GSL CBLAS library!), $GSL_LIBS)
      AC_CHECK_LIB([gsl],[gsl_integration_qag],
         AC_DEFINE([HAVE_LIBGSL],1,[The GSL library appears to be present.]),
         AC_MSG_ERROR(something is wrong with the GSL library!), $GSL_LIBS)
      have_gsl="yes"
   fi
605
606
607
608
   if test "$have_gsl" = "no"; then
      GSL_LIBS=""
      GSL_INCS=""
   fi
Peter W. Draper's avatar
Peter W. Draper committed
609
fi
610
611
612
AC_SUBST([GSL_LIBS])
AC_SUBST([GSL_INCS])
AM_CONDITIONAL([HAVEGSL],[test -n "$GSL_LIBS"])
613

614
# Check for pthreads.
615
AX_PTHREAD([LIBS="$PTHREAD_LIBS $LIBS" CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
616
    CC="$PTHREAD_CC" LDFLAGS="$LDFLAGS $PTHREAD_LIBS $LIBS"],
Pedro Gonnet's avatar
Pedro Gonnet committed
617
618
619
620
    AC_MSG_ERROR([Could not find a working version of
    the pthread library. Make sure you have the library and header files installed
    or use CPPFLAGS and LDFLAGS if the library is installed in a
    non-standard location.]))
621

622
# Check whether POSIX thread barriers are implemented (e.g. OSX does not have them)
623
have_pthread_barrier="no"
624
AC_CHECK_LIB(pthread, pthread_barrier_init,
625
	     have_pthread_barrier="yes",
626
	     AC_MSG_WARN(POSIX implementation does not have barriers. SWIFT will use home-made ones.))
627
628
629
if test "x$have_pthread_barrier" == "xyes"; then
  AC_DEFINE([HAVE_PTHREAD_BARRIERS], [1], [The posix library implements barriers])
fi
630

631
632
633
634
# Check whether POSIX file allocation functions exist (e.g. OSX does not have them)
AC_CHECK_LIB(pthread, posix_fallocate,
	     AC_DEFINE([HAVE_POSIX_FALLOCATE], [1], [The posix library implements file allocation functions.]),
	     AC_MSG_WARN(POSIX implementation does not have file allocation functions.))
635

636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
# Check for METIS.
have_metis="no"
AC_ARG_WITH([metis],
    [AS_HELP_STRING([--with-metis=PATH],
       [root directory where METIS is installed @<:@yes/no@:>@]
    )],
    [with_metis="$withval"],
    [with_metis="no"]
)

METIS_LIBS=""
if test "x$with_metis" != "xno"; then

# Check if we have METIS.
   if test "x$with_metis" != "xyes" -a "x$with_metis" != "x"; then
      METIS_LIBS="-L$with_metis/lib -lmetis"
      METIS_INCS="-I$with_metis/include"
   else
      METIS_LIBS="-lmetis"
      METIS_INCS=""
   fi
   AC_CHECK_LIB([metis],[METIS_PartGraphKway], [have_metis="yes"],
                [have_metis="no"], $METIS_LIBS)
   if test "$have_metis" == "yes"; then
      AC_DEFINE([HAVE_METIS],1,[The METIS library is present.])
   else
      AC_MSG_ERROR("Failed to find a METIS library")
   fi
fi

AC_SUBST([METIS_LIBS])
AC_SUBST([METIS_INCS])
AM_CONDITIONAL([HAVEMETIS],[test -n "$METIS_LIBS"])

# Check for ParMETIS note we can have both as ParMETIS uses METIS.
671
have_parmetis="no"
672
673
674
AC_ARG_WITH([parmetis],
    [AS_HELP_STRING([--with-parmetis=PATH],
       [root directory where ParMETIS is installed @<:@yes/no@:>@]
675
    )],
676
    [with_parmetis="$withval"],
677
678
679
680
    [with_parmetis="no"]
)

if test "x$with_parmetis" != "xno"; then
681
682

# Check if we have ParMETIS.
683
684
685
   if test "x$with_parmetis" != "xyes" -a "x$with_parmetis" != "x"; then
      PARMETIS_LIBS="-L$with_parmetis/lib -lparmetis"
      PARMETIS_INCS="-I$with_parmetis/include"
686
   else
687
688
      PARMETIS_LIBS="-lparmetis"
      PARMETIS_INCS=""
689
   fi
690
691
   AC_CHECK_LIB([parmetis],[ParMETIS_V3_RefineKway], [have_parmetis="yes"],
                [have_parmetis="no"], $PARMETIS_LIBS)
692
693
   if test "$have_parmetis" == "no"; then

694
695
# A build may use an external METIS library, check for that.

696
697
698
      if test "x$with_parmetis" != "xyes" -a "x$with_parmetis" != "x"; then
         PARMETIS_LIBS="-L$with_parmetis/lib -lparmetis -lmetis"
         PARMETIS_INCS="-I$with_parmetis/include"
699
      else
700
701
         PARMETIS_LIBS="-lparmetis -lmetis"
         PARMETIS_INCS=""
702
      fi
703
      AC_CHECK_LIB([parmetis],[ParMETIS_V3_RefineKway], [have_parmetis="yes"],
704
                   [have_parmetis="no"], [$METIS_LIBS $PARMETIS_LIBS])
705
706

   fi
707
708
   if test "$have_parmetis" == "yes"; then
      AC_DEFINE([HAVE_PARMETIS],1,[The ParMETIS library is present.])
709
710
   else
      AC_MSG_ERROR("Failed to find a ParMETIS library")
711
   fi
712
fi
713

714
715
716
AC_SUBST([PARMETIS_LIBS])
AC_SUBST([PARMETIS_INCS])
AM_CONDITIONAL([HAVEPARMETIS],[test -n "$PARMETIS_LIBS"])
717

718
719
720
721
722
723
724
725
# METIS fixed width integer printing can require this, so define. Only needed
# for some non C99 compilers, i.e. C++ pre C++11.
AH_VERBATIM([__STDC_FORMAT_MACROS],
            [/* Needed to get PRIxxx macros from stdint.h when not using C99 */
#ifndef __STDC_FORMAT_MACROS
#define __STDC_FORMAT_MACROS 1
#endif])

726
727
# Check for FFTW. We test for this in the standard directories by default,
# and only disable if using --with-fftw=no or --without-fftw. When a value
728
# is given FFTW must be found.
729
# If FFTW is found, we check whether this is the threaded version.
730
731
732
733
734
735
736
737
738
have_fftw="no"
AC_ARG_WITH([fftw],
    [AS_HELP_STRING([--with-fftw=PATH],
       [root directory where fftw is installed @<:@yes/no@:>@]
    )],
    [with_fftw="$withval"],
    [with_fftw="test"]
)
if test "x$with_fftw" != "xno"; then
739
740

   # Was FFTW's location specifically given?
741
   if test "x$with_fftw" != "xyes" -a "x$with_fftw" != "xtest" -a "x$with_fftw" != "x"; then
742
      FFTW_LIBS="-L$with_fftw/lib -lfftw3"
743
744
      FFTW_INCS="-I$with_fftw/include"
   else
745
      FFTW_LIBS="-lfftw3"
746
747
      FFTW_INCS=""
   fi
748

749
750
751
752
753
754
   #  FFTW is not specified, so just check if we have it.
   if test "x$with_fftw" = "xtest"; then
      AC_CHECK_LIB([fftw3],[fftw_malloc],[have_fftw="yes"],[have_fftw="no"],$FFTW_LIBS)
      if test "x$have_fftw" != "xno"; then
      	 AC_DEFINE([HAVE_FFTW],1,[The FFTW library appears to be present.])
      fi
755
   # FFTW was specified, check that it was a valid location.
756
757
758
759
760
   else
      AC_CHECK_LIB([fftw3],[fftw_malloc],
         AC_DEFINE([HAVE_FFTW],1,[The FFTW library appears to be present.]),
         AC_MSG_ERROR(something is wrong with the FFTW library!), $FFTW_LIBS)
      have_fftw="yes"
761
   fi
762
763

   # FFTW was requested not to be used.
764
765
766
767
   if test "$have_fftw" = "no"; then
      FFTW_LIBS=""
      FFTW_INCS=""
   fi
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792

   # Now, check whether we have the threaded version of FFTW
   if test "x$have_fftw" = "xyes"; then

      # Was FFTW's location specifically given?
      if test "x$with_fftw" != "xyes" -a "x$with_fftw" != "xtest" -a "x$with_fftw" != "x"; then
        FFTW_THREADED_LIBS="-L$with_fftw/lib -lfftw3_threads -lfftw3"
        FFTW_THREADED_INCS="-I$with_fftw/include"
      else
        FFTW_THREADED_LIBS="-lfftw3_threads -lfftw3"
        FFTW_THREADED_INCS=""
      fi

      # Verify that the library is threaded
      AC_CHECK_LIB([fftw3],[fftw_init_threads],[have_threaded_fftw="yes"],
		   [have_threaded_fftw="no"], $FFTW_THREADED_LIBS)

      # If found, update things
      if test "x$have_threaded_fftw" = "xyes"; then
         AC_DEFINE([HAVE_THREADED_FFTW],1,[The threaded FFTW library appears to be present.])
         FFTW_LIBS=$FFTW_THREADED_LIBS
         FFTW_INCS=$FFTW_THREADED_INCS
	 have_fftw="yes - threaded"
      fi
   fi
793
fi
Josh Borrow's avatar
Josh Borrow committed
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858

AC_ARG_WITH([arm-fftw],
    [AS_HELP_STRING([--with-arm-fftw=PATH],
      [root directory where arm fft library is installed @<:@yes/no@:>@]
    )],
    [with_arm_fftw="$withval"],
    [with_arm_fftw=no]
)
if test "x$with_arm_fftw" != "xno"; then

   # Was FFTW's location specifically given?
   if test "x$with_arm_fftw" != "xyes" -a "x$with_arm_fftw" != "xtest" -a "x$with_arm_fftw" != "x"; then
      FFTW_LIBS="-L$with_arm_fftw/lib -larmpl_lp64"
      FFTW_INCS="-I$with_arm_fftw/include"
   else
      FFTW_LIBS="-larmpl_lp64"
      FFTW_INCS=""
   fi

   #  FFTW is not specified, so just check if we have it.
   if test "x$with_arm_fftw" = "xtest"; then
      AC_CHECK_LIB([armpl_lp64],[fftw_malloc],[have_fftw="yes"],[have_fftw="no"],$FFTW_LIBS)
      if test "x$have_arm_fftw" != "xno"; then
      	 AC_DEFINE([HAVE_FFTW],1,[The FFTW library appears to be present.])
	 have_fftw="yes - ARM"
      fi
   # FFTW was specified, check that it was a valid location.
   else
      AC_CHECK_LIB([armpl_lp64],[fftw_malloc],
         AC_DEFINE([HAVE_FFTW],1,[The FFTW library appears to be present.]),
         AC_MSG_ERROR(something is wrong with the FFTW library!), $FFTW_LIBS)
      have_fftw="yes - ARM"
   fi

   # FFTW was requested not to be used.
   if test "$have_arm_fftw" = "no"; then
      FFTW_LIBS=""
      FFTW_INCS=""
   fi

   # Now, check whether we have the threaded version of FFTW
   if test "x$have_arm_fftw" = "xyes"; then

      # Was FFTW's location specifically given?
      if test "x$with_arm_fftw" != "xyes" -a "x$with_arm_fftw" != "xtest" -a "x$with_arm_fftw" != "x"; then
        FFTW_THREADED_LIBS="-L$with_arm_fftw/lib -larmpl_lp64_threads -larmpl_lp64"
        FFTW_THREADED_INCS="-I$with_arm_fftw/include"
      else
        FFTW_THREADED_LIBS="-larmpl_lp64_threads -larmpl_lp64"
        FFTW_THREADED_INCS=""
      fi

      # Verify that the library is threaded
      AC_CHECK_LIB([armpl_lp64],[fftw_init_threads],[have_threaded_fftw="yes"],
                  [have_threaded_fftw="no"], $FFTW_THREADED_LIBS)

      # If found, update things
      if test "x$have_threaded_fftw" = "xyes"; then
         AC_DEFINE([HAVE_THREADED_FFTW],1,[The threaded FFTW library appears to be present.])
         FFTW_LIBS=$FFTW_THREADED_LIBS
         FFTW_INCS=$FFTW_THREADED_INCS
         have_fftw="yes - ARM - threaded"
      fi
   fi
fi
859
860
861
AC_SUBST([FFTW_LIBS])
AC_SUBST([FFTW_INCS])
AM_CONDITIONAL([HAVEFFTW],[test -n "$FFTW_LIBS"])
862

863
864
865
#  Check for -lprofiler usually part of the gperftools along with tcmalloc.
have_profiler="no"
AC_ARG_WITH([profiler],
866
   [AS_HELP_STRING([--with-profiler=PATH],
867
868
869
870
871
872
873
874
875
876
877
878
      [use cpu profiler library or specify the directory with lib @<:@yes/no@:>@]
   )],
   [with_profiler="$withval"],
   [with_profiler="no"]
)
if test "x$with_profiler" != "xno"; then
   if test "x$with_profiler" != "xyes" -a "x$with_profiler" != "x"; then
      proflibs="-L$with_profiler -lprofiler"
   else
      proflibs="-lprofiler"
   fi
   AC_CHECK_LIB([profiler],[ProfilerFlush],
879
    [have_profiler="yes"
880
881
882
883
884
885
886
887
888
889
890
891
892
893
      AC_DEFINE([WITH_PROFILER],1,[Link against the gperftools profiling library.])],
    [have_profiler="no"], $proflibs)

   if test "$have_profiler" = "yes"; then
      PROFILER_LIBS="$proflibs"
   else
      PROFILER_LIBS=""
   fi
fi
AC_SUBST([PROFILER_LIBS])
AM_CONDITIONAL([HAVEPROFILER],[test -n "$PROFILER_LIBS"])

# Check for special allocators
have_special_allocator="no"
894

895
896
897
#  Check for tcmalloc a fast malloc that is part of the gperftools.
have_tcmalloc="no"
AC_ARG_WITH([tcmalloc],
898
   [AS_HELP_STRING([--with-tcmalloc=PATH],
899
900
901
902
903
      [use tcmalloc library or specify the directory with lib @<:@yes/no@:>@]
   )],
   [with_tcmalloc="$withval"],
   [with_tcmalloc="no"]
)
904
905
906
907
if test "x$with_tcmalloc" != "xno" -a "x$have_special_allocator" != "xno"; then
   AC_MSG_ERROR("Cannot activate more than one alternative malloc library")
fi

908
if test "x$with_tcmalloc" != "xno"; then
Peter W. Draper's avatar
Peter W. Draper committed
909
   if test "x$with_tcmalloc" != "xyes" -a "x$with_tcmalloc" != "x"; then
910
      tclibs="-L$with_tcmalloc -ltcmalloc"
911
   else
912
      tclibs="-ltcmalloc"
913
914
   fi
   AC_CHECK_LIB([tcmalloc],[tc_cfree],[have_tcmalloc="yes"],[have_tcmalloc="no"],
915
                $tclibs)
916
917
918

   #  Could just have the minimal version.
   if test "$have_tcmalloc" = "no"; then
Peter W. Draper's avatar
Peter W. Draper committed
919
      if test "x$with_tcmalloc" != "xyes" -a "x$with_tcmalloc" != "x"; then
920
         tclibs="-L$with_tcmalloc -ltcmalloc_minimal"
921
      else
922
         tclibs="-ltcmalloc_minimal"
923
924
      fi
      AC_CHECK_LIB([tcmalloc],[tc_cfree],[have_tcmalloc="yes"],[have_tcmalloc="no"],
925
                   $tclibs)
926
   fi
Pedro Gonnet's avatar
Pedro Gonnet committed
927

928
929
930
   if test "$have_tcmalloc" = "yes"; then
      TCMALLOC_LIBS="$tclibs"

931
      AC_DEFINE([HAVE_TCMALLOC],1,[The tcmalloc library appears to be present.])
932

933
      have_special_allocator="tcmalloc"
934
935

      # Prevent compilers that replace the calls with built-ins (GNU 99) from doing so.
936
937
938
939
940
941
      case "$ax_cv_c_compiler_vendor" in
        intel | gnu | clang)
             CFLAGS="$CFLAGS -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-free"
          ;;
      esac

942
943
   else
      TCMALLOC_LIBS=""
944
945
946
947
948
   fi
fi
AC_SUBST([TCMALLOC_LIBS])
AM_CONDITIONAL([HAVETCMALLOC],[test -n "$TCMALLOC_LIBS"])

Peter W. Draper's avatar
Peter W. Draper committed
949
950
951
#  Check for jemalloc another fast malloc that is good with contention.
have_jemalloc="no"
AC_ARG_WITH([jemalloc],
952
   [AS_HELP_STRING([--with-jemalloc=PATH],
Peter W. Draper's avatar
Peter W. Draper committed
953
954
955
956
957
      [use jemalloc library or specify the directory with lib @<:@yes/no@:>@]
   )],
   [with_jemalloc="$withval"],
   [with_jemalloc="no"]
)
958
959
960
961
if test "x$with_jemalloc" != "xno" -a "x$have_special_allocator" != "xno"; then
   AC_MSG_ERROR("Cannot activate more than one alternative malloc library")
fi

Peter W. Draper's avatar
Peter W. Draper committed
962
963
964
965
966
967
968
969
970
971
972
if test "x$with_jemalloc" != "xno"; then
   if test "x$with_jemalloc" != "xyes" -a "x$with_jemalloc" != "x"; then
      jelibs="-L$with_jemalloc -ljemalloc"
   else
      jelibs="-ljemalloc"
   fi
   AC_CHECK_LIB([jemalloc],[malloc_usable_size],[have_jemalloc="yes"],[have_jemalloc="no"],
                $jelibs)

   if test "$have_jemalloc" = "yes"; then
      JEMALLOC_LIBS="$jelibs"
973

974
      AC_DEFINE([HAVE_JEMALLOC],1,[The jemalloc library appears to be present.])
975

976
      have_special_allocator="jemalloc"
977
978

      # Prevent compilers that replace the regular calls with built-ins (GNU 99) from doing so.
979
980
981
982
983
984
      case "$ax_cv_c_compiler_vendor" in
        intel | gnu | clang)
             CFLAGS="$CFLAGS -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-free"
          ;;
      esac

Peter W. Draper's avatar
Peter W. Draper committed
985
986
987
988
989
990
991
   else
      JEMALLOC_LIBS=""
   fi
fi
AC_SUBST([JEMALLOC_LIBS])
AM_CONDITIONAL([HAVEJEMALLOC],[test -n "$JEMALLOC_LIBS"])

992
993
994
#  Check for tbbmalloc, Intel's fast and parallel allocator
have_tbbmalloc="no"
AC_ARG_WITH([tbbmalloc],
995
   [AS_HELP_STRING([--with-tbbmalloc=PATH],
996
997
998
999
1000
1001
1002
      [use tbbmalloc library or specify the directory with lib @<:@yes/no@:>@]
   )],
   [with_tbbmalloc="$withval"],
   [with_tbbmalloc="no"]
)
if test "x$with_tbbmalloc" != "xno" -a "x$have_special_allocator" != "xno"; then
   AC_MSG_ERROR("Cannot activate more than one alternative malloc library")
Peter W. Draper's avatar
Peter W. Draper committed
1003
1004
fi

1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
if test "x$with_tbbmalloc" != "xno"; then
   if test "x$with_tbbmalloc" != "xyes" -a "x$with_tbbmalloc" != "x"; then
      tbblibs="-L$with_tbbmalloc -ltbbmalloc_proxy -ltbbmalloc"
   else
      tbblibs="-ltbbmalloc_proxy -ltbbmalloc"
   fi
   AC_CHECK_LIB([tbbmalloc],[scalable_malloc],[have_tbbmalloc="yes"],[have_tbbmalloc="no"],
                $tbblibs)

   if test "$have_tbbmalloc" = "yes"; then
      TBBMALLOC_LIBS="$tbblibs"

1017
      AC_DEFINE([HAVE_TBBMALLOC],1,[The TBBmalloc library appears to be present.])
1018

1019
      have_special_allocator="TBBmalloc"
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030

      # Prevent compilers that replace the calls with built-ins (GNU 99) from doing so.
      case "$ax_cv_c_compiler_vendor" in
        intel | gnu | clang)
             CFLAGS="$CFLAGS -fno-builtin-malloc -fno-builtin-calloc -fno-builtin-realloc -fno-builtin-free"
          ;;
      esac

   else
      TBBMALLOC_LIBS=""
   fi
Peter W. Draper's avatar
Peter W. Draper committed
1031
fi
1032
1033
AC_SUBST([TBBMALLOC_LIBS])
AM_CONDITIONAL([HAVETBBMALLOC],[test -n "$TBBMALLOC_LIBS"])
Peter W. Draper's avatar
Peter W. Draper committed
1034

1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
# Check for python.
have_python="no"
AC_ARG_WITH([python],
    [AS_HELP_STRING([--with-python=PATH],
       [root directory where python is installed @<:@yes/no@:>@]
    )],
    [with_python="$withval"],
    [with_python="no"]
)
if test "x$with_python" != "xno"; then
Loic Hausammann's avatar
Loic Hausammann committed
1045
1046
1047
1048
   if test "$with_python" == ""; then
      # use linux default python
      with_python="/usr/"
   fi
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
   AM_PATH_PYTHON([3], [], [AC_MSG_ERROR(python not found)])   
   AC_ARG_VAR([PYTHON_INCS], [Include flags for python, bypassing python-config])
   AC_ARG_VAR([PYTHON_CONFIG], [Path to python-config])
   AS_IF([test -z "$PYTHON_INCS"], [
      AS_IF([test -z "$PYTHON_CONFIG"], [
      	AC_PATH_PROGS([PYTHON_CONFIG],
	          [python$PYTHON_VERSION-config python-config],
                  [no],
                  [`dirname $PYTHON`])
    	AS_IF([test "$PYTHON_CONFIG" = no], [AC_MSG_ERROR([cannot find python-config for $PYTHON.])])
      ])
      AC_MSG_CHECKING([python include flags])
      PYTHON_INCS=`$PYTHON_CONFIG --includes`
      AC_MSG_RESULT([$PYTHON_INCS])
  ])
  have_python="yes"
1065
1066
fi
AC_SUBST([PYTHON_INCS])
1067
AM_CONDITIONAL([HAVEPYTHON],[test -n "$PYTHON_INCS"])
1068
1069


1070
# Check for HDF5. This is required.
1071
AX_LIB_HDF5
1072
1073
1074
1075
if test "$with_hdf5" != "yes"; then
    AC_MSG_ERROR([Could not find a working HDF5 library])
fi

1076
1077
1078
# We want to know if this HDF5 supports MPI and whether we should use it.
# The default is to use MPI support if it is available, i.e. this is
# a parallel HDF5.
1079
1080
have_parallel_hdf5="no"
if test "$with_hdf5" = "yes"; then
1081
1082
    AC_ARG_ENABLE([parallel-hdf5],
       [AS_HELP_STRING([--enable-parallel-hdf5],
1083
         [Enable parallel HDF5 library MPI functions if available. @<:@yes/no@:>@]
1084
1085
1086
1087
1088
1089
1090
       )],
       [enable_parallel_hdf5="$enableval"],
       [enable_parallel_hdf5="yes"]
    )

    if test "$enable_parallel_hdf5" = "yes"; then
        AC_MSG_CHECKING([for HDF5 parallel support])
1091
1092

	# Check if the library is capable, the header should define H5_HAVE_PARALLEL.
1093
1094
        old_CPPFLAGS="$CPPFLAGS"
        CPPFLAGS="$CPPFLAGS $HDF5_CPPFLAGS"
1095
1096
1097
1098
1099
1100
        AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
        #include "hdf5.h"
        #ifndef H5_HAVE_PARALLEL
        # error macro not defined
        #endif
        ]])], [parallel="yes"], [parallel="no"])
1101
1102
1103
1104
1105
        if test "$parallel" = "yes"; then
            have_parallel_hdf5="yes"
            AC_DEFINE([HAVE_PARALLEL_HDF5],1,[HDF5 library supports parallel access])
        fi
        AC_MSG_RESULT($parallel)
1106
        CPPFLAGS="$old_CPPFLAGS"
1107
1108
1109
1110
    fi
fi
AM_CONDITIONAL([HAVEPARALLELHDF5],[test "$have_parallel_hdf5" = "yes"])

1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
# Check for grackle.
have_grackle="no"
AC_ARG_WITH([grackle],
    [AS_HELP_STRING([--with-grackle=PATH],
       [root directory where grackle is installed @<:@yes/no@:>@]
    )],
    [with_grackle="$withval"],
    [with_grackle="no"]
)
if test "x$with_grackle" != "xno"; then
   AC_PROG_FC
   AC_FC_LIBRARY_LDFLAGS
   if test "x$with_grackle" != "xyes" -a "x$with_grackle" != "x"; then
      GRACKLE_LIBS="-L$with_grackle/lib -lgrackle"
      GRACKLE_INCS="-I$with_grackle/include"
   else
      GRACKLE_LIBS="-lgrackle"
      GRACKLE_INCS=""
   fi

   have_grackle="yes"

   echo $GRACKLE_LIBS

   AC_CHECK_LIB(
      [grackle],
      [initialize_chemistry_data],
      [AC_DEFINE([HAVE_GRACKLE],1,[The GRACKLE library appears to be present.])
        AC_DEFINE([CONFIG_BFLOAT_8],1,[Use doubles in grackle])
      ],
      [AC_MSG_ERROR(Cannot find grackle library!)],
      [$GRACKLE_LIBS])
fi
AC_SUBST([GRACKLE_LIBS])
AC_SUBST([GRACKLE_INCS])
AM_CONDITIONAL([HAVEGRACKLE],[test -n "$GRACKLE_LIBS"])

1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
# Check for VELOCIraptor.
have_velociraptor="no"
AC_ARG_WITH([velociraptor],
    [AS_HELP_STRING([--with-velociraptor=PATH],
       [Directory where velociraptor library exists @<:@yes/no@:>@]
    )],
    [with_velociraptor="$withval"],
    [with_velociraptor="no"]
)
if test "x$with_velociraptor" != "xno"; then
   AC_PROG_FC
   AC_FC_LIBRARY_LDFLAGS
   if test "x$with_velociraptor" != "xyes" -a "x$with_velociraptor" != "x"; then
1161
      VELOCIRAPTOR_LIBS="-L$with_velociraptor -lvelociraptor -lmpi -lstdc++ -lhdf5"
1162
1163
1164
1165
1166
1167
1168
1169
      CFLAGS="$CFLAGS -fopenmp"
   else
      VELOCIRAPTOR_LIBS=""
   fi

   have_velociraptor="yes"

   AC_CHECK_LIB(
Loic Hausammann's avatar
Loic Hausammann committed
1170
      [velociraptor],
1171
1172
      [InitVelociraptor],
      [AC_DEFINE([HAVE_VELOCIRAPTOR],1,[The VELOCIraptor library appears to be present.])],
1173
      [AC_MSG_ERROR(Cannot find VELOCIraptor library at $with_velociraptor or incompatible HDF5 library loaded.)],
1174
1175
1176
1177
1178
1179
      [$VELOCIRAPTOR_LIBS $HDF5_LDFLAGS $HDF5_LIBS $GSL_LIBS]
   )
fi
AC_SUBST([VELOCIRAPTOR_LIBS])
AM_CONDITIONAL([HAVEVELOCIRAPTOR],[test -n "$VELOCIRAPTOR_LIBS"])

1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
# Check for dummy VELOCIraptor.
AC_ARG_ENABLE([dummy-velociraptor],
    [AS_HELP_STRING([--enable-dummy-velociraptor],
       [Enable dummy velociraptor compilation @<:@yes/no@:>@]
    )],
    [enable_dummy_velociraptor="$enableval"],
    [enable_dummy_velociraptor="no"]
)

if test "$enable_dummy_velociraptor" = "yes"; then
  have_velociraptor="yes"

  AC_DEFINE(HAVE_VELOCIRAPTOR,1,[The VELOCIraptor library appears to be present.])
  AC_DEFINE(HAVE_DUMMY_VELOCIRAPTOR,1,[The dummy VELOCIraptor library is present.])
fi

1196
1197
1198
1199
# Check for floating-point execeptions
AC_CHECK_FUNC(feenableexcept, AC_DEFINE([HAVE_FE_ENABLE_EXCEPT],[1],
    [Defined if the floating-point exception can be enabled using non-standard GNU functions.]))

1200
# Check for setaffinity.
1201
AC_CHECK_FUNC(pthread_setaffinity_np, AC_DEFINE([HAVE_SETAFFINITY],[1],
Pedro Gonnet's avatar
Pedro Gonnet committed
1202
    [Defined if pthread_setaffinity_np exists.]) )
1203
1204
AM_CONDITIONAL(HAVESETAFFINITY,
    [test "$ac_cv_func_pthread_setaffinity_np" = "yes"])
1205

1206
1207
1208
1209
# If available check for NUMA as well. There is a problem with the headers of
# this library, mainly that they do not pass the strict prototypes check when
# installed outside of the system directories. So we actually do this check
# in two phases. The basic ones first (before strict-prototypes is added to CFLAGS).
1210
have_numa="no"
1211
1212
1213
1214
1215
1216
1217
1218
1219
AC_ARG_WITH([numa],
    [AS_HELP_STRING([--with-numa=PATH],
       [Directory where the NUMA library exists @<:@yes/no@:>@]
    )],
    [with_numa="$withval"],
    [with_numa="yes"]
)
if test "$ac_cv_func_pthread_setaffinity_np" = "yes" -a "x$with_numa" != "xno"; then

1220
1221
1222
1223
1224
1225
1226
    if test "x$with_numa" != "xyes" -a "x$with_numa" != "x"; then
        NUMA_LIBS="-L$with_numa/lib -lnuma"
        NUMA_INCS="-I$with_numa/include"
    else
        NUMA_LIBS="-lnuma"
        NUMA_INCS=""
    fi
Angus Lepper's avatar
Angus Lepper committed
1227

1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
    #  Test for header file.
    old_CPPFLAGS="$CPPFLAGS"
    CPPFLAGS="$CPPFLAGS $NUMA_INCS"
    AC_CHECK_HEADER([numa.h])
    CPPFLAGS="$old_CPPFLAGS"
    if test "$ac_cv_header_numa_h" = "yes"; then

        #  If NUMA location is specified check if we have it.
        if test "x$with_numa" != "xyes" -a "x$with_numa" != "x"; then
            AC_CHECK_LIB([numa],[numa_available],
                AC_DEFINE([HAVE_LIBNUMA],1,[The NUMA library appears to be present.]),
                AC_MSG_ERROR(something is wrong with the NUMA library!), $NUMA_LIBS)
            have_numa="yes"
        else
            AC_CHECK_LIB([numa],[numa_available],[have_numa="yes"],[have_numa="no"],$NUMA_LIBS)
            if test "x$have_numa" != "xno"; then
                AC_DEFINE([HAVE_LIBNUMA],1,[The NUMA library appears to be present.])
            fi
        fi
    fi
Angus Lepper's avatar
Angus Lepper committed
1248

1249
1250
1251
1252
    #  We can live without this.
    if test "$have_numa" = "no"; then
       NUMA_LIBS=""
    fi
1253
1254
fi
AC_SUBST([NUMA_LIBS])
1255

Pedro Gonnet's avatar
Pedro Gonnet committed
1256
# Check for Intel and PowerPC intrinsics header optionally used by vector.h.
Josh Borrow's avatar
Josh Borrow committed
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
AC_CHECK_HEADERS([immintrin.h], [], [],
[#ifdef HAVE_IMMINTRIN_H
# include <immintrin.h>
#endif
])
AC_CHECK_HEADERS([altivec.h], [], [],
[#ifdef HAVE_ALTIVEC_H
# include <altivec.h>
#endif
])
1267

1268
# Check for timing functions needed by cycle.h.
Pedro Gonnet's avatar
Pedro Gonnet committed
1269
1270
AC_HEADER_TIME
AC_CHECK_HEADERS([sys/time.h c_asm.h intrinsics.h mach/mach_time.h])
1271
1272
1273
AC_CHECK_TYPE([hrtime_t],[AC_DEFINE(HAVE_HRTIME_T, 1, [Define to 1 if hrtime_t
is defined in <sys/time.h>])],,
[#if HAVE_SYS_TIME_H
Pedro Gonnet's avatar
Pedro Gonnet committed
1274
1275
1276
1277
1278
#include <sys/time.h>
#endif])
AC_CHECK_FUNCS([gethrtime read_real_time time_base_to_time clock_gettime mach_absolute_time])
AC_MSG_CHECKING([for _rtc intrinsic])
rtc_ok=yes
1279
1280
AC_LINK_IFELSE([AC_LANG_PROGRAM(
[[#ifdef HAVE_INTRINSICS_H
Pedro Gonnet's avatar
Pedro Gonnet committed
1281
#include <intrinsics.h>
1282
#endif]],
1283
1284
[[_rtc()]])],
[AC_DEFINE(HAVE__RTC,1,[Define if you have the UNICOS _rtc() intrinsic.])],[rtc_ok=no])
Pedro Gonnet's avatar
Pedro Gonnet committed
1285
1286
AC_MSG_RESULT($rtc_ok)

Josh Borrow's avatar
Josh Borrow committed
1287
# Special timers for the ARM v7 platforms (taken from FFTW-3 to match their cycle.h)
1288
1289
1290
1291
1292
1293
1294
1295
1296
1297
AC_ARG_ENABLE(armv7a-cntvct, [AC_HELP_STRING([--enable-armv7a-cntvct],[enable the cycle counter on Armv7a via the CNTVCT register])], have_armv7acntvct=$enableval)
if test "$have_armv7acntvct"x = "yes"x; then
	AC_DEFINE(HAVE_ARMV7A_CNTVCT,1,[Define if you have enabled the CNTVCT cycle counter on ARMv7a])
fi

AC_ARG_ENABLE(armv7a-pmccntr, [AC_HELP_STRING([--enable-armv7a-pmccntr],[enable the cycle counter on Armv7a via the PMCCNTR register])], have_armv7apmccntr=$enableval)
if test "$have_armv7apmccntr"x = "yes"x; then
	AC_DEFINE(HAVE_ARMV7A_PMCCNTR,1,[Define if you have enabled the PMCCNTR cycle counter on ARMv7a])
fi

1298
1299
1300
1301
1302
1303
1304
1305
1306
1307
# Check if we have native exp10 and exp10f functions. If not failback to our
# implementations. On Apple/CLANG we have __exp10, so also check for that
# if the compiler is clang.
AC_CHECK_LIB([m],[exp10], [AC_DEFINE([HAVE_EXP10],1,[The exp10 function is present.])])
AC_CHECK_LIB([m],[exp10f], [AC_DEFINE([HAVE_EXP10F],1,[The exp10f function is present.])])
if test "$ax_cv_c_compiler_vendor" = "clang"; then
      AC_CHECK_LIB([m],[__exp10], [AC_DEFINE([HAVE___EXP10],1,[The __exp10 function is present.])])
      AC_CHECK_LIB([m],[__exp10f], [AC_DEFINE([HAVE___EXP10F],1,[The __exp10f function is present.])])
fi

1308
# Add warning flags by default, if these can be used. Option =error adds
1309
# -Werror to GCC, clang and Intel.  Note do this last as compiler tests may
1310
# become errors, if that's an issue don't use CFLAGS for these, use an AC_SUBST().
1311
1312
AC_ARG_ENABLE([compiler-warnings],
   [AS_HELP_STRING([--enable-compiler-warnings],
1313
     [Enable compile time warning flags, if compiler is known @<:@error/no/yes)@:>@]
1314
1315
   )],
   [enable_warn="$enableval"],
1316
   [enable_warn="error"]
1317
1318
)
if test "$enable_warn" != "no"; then
1319

1320
    # AX_CFLAGS_WARN_ALL does not give good warning flags for the Intel compiler
1321
    # We will do this by hand instead and only default to the macro for unknown compilers
1322
1323
    case "$ax_cv_c_compiler_vendor" in
          gnu | clang)
1324
             CFLAGS="$CFLAGS -Wall -Wextra -Wno-unused-parameter -Wshadow"
1325
          ;;
1326
	  intel)
1327
             CFLAGS="$CFLAGS -w2 -Wunused-variable -Wshadow"
1328
          ;;
1329
1330
1331
	  *)
	     AX_CFLAGS_WARN_ALL
	  ;;
1332
    esac
1333

1334
    # Add a "choke on warning" flag if it exists
1335
    if test "$enable_warn" = "error"; then
1336
       case "$ax_cv_c_compiler_vendor" in
1337
          intel | gnu | clang)
1338
1339
1340
             CFLAGS="$CFLAGS -Werror"
          ;;
       esac
1341
    fi
1342
1343
1344
1345
1346

    # We want strict-prototypes, but this must still work even if warnings
    # are an error.
    AX_CHECK_COMPILE_FLAG([-Wstrict-prototypes],[CFLAGS="$CFLAGS -Wstrict-prototypes"],
                          [CFLAGS="$CFLAGS"],[$CFLAGS],[AC_LANG_SOURCE([int main(void){return 0;}])])
1347
1348
fi

1349
1350
1351
# Second part of the NUMA library checks. We now decide if we need to use
# -isystem to get around the strict-prototypes problem. Assumes isystem
# is available when strict-prototypes is.
1352
1353
1354
1355
1356
if test "$have_numa" != "no"; then
    if test "x$with_numa" != "xyes" -a "x$with_numa" != "x"; then
        case "$CFLAGS" in
            *strict-prototypes*)
                NUMA_INCS="-isystem$with_numa/include"
1357
1358
1359
1360
1361
1362
1363
1364
1365
1366
1367
1368
                # This may still fail if CPATH is used, so we check if the
                # headers are usable.
                AS_UNSET(ac_cv_header_numa_h)
                old_CPPFLAGS="$CPPFLAGS"
                CPPFLAGS="$CPPFLAGS $NUMA_INCS"
                numa_failed="no"
                AC_CHECK_HEADER([numa.h],[numa_failed="no"],
                                [numa_failed="yes"])
                if test "$numa_failed" = "yes"; then
                    AC_MSG_ERROR([Failed to compile the numa.h header file: you may need to set --enable-compiler-warnings to yes or no])
                fi
                CPPFLAGS="$old_CPPFLAGS"
1369
1370
1371
1372
1373
            ;;
            *)
                NUMA_INCS="-I$with_numa/include"
            ;;
        esac
1374
1375
1376
1377
   fi
fi
AC_SUBST([NUMA_INCS])

1378
1379
# Various package configuration options.

1380
1381
1382
1383
1384
1385
1386
1387
1388
1389
1390
1391
1392
1393
1394
# Master subgrid options
# If you add a restriction (e.g. no cooling, chemistry or hydro)
# you will need to check for overwrite after reading the additional options.
# As an example for this, see the call to AC_ARG_WITH for cooling.
AC_ARG_WITH([subgrid],
	[AS_HELP_STRING([--with-subgrid=<subgrid>],
		[Master switch for subgrid methods. Inexperienced user should start from here @<:@none, GEAR, EAGLE default: none@:>@]
	)],
	[with_subgrid="$withval"],
	[with_subgrid=none]
)

# Default values
with_subgrid_cooling=none
with_subgrid_chemistry=none
1395
with_subgrid_tracers=none
1396
with_subgrid_entropy_floor=none
Loic Hausammann's avatar
Loic Hausammann committed
1397
with_subgrid_pressure_floor=none
1398
with_subgrid_stars=none
1399
with_subgrid_star_formation=none
1400
with_subgrid_feedback=none
1401
1402
1403
1404
1405
1406
1407
1408

case "$with_subgrid" in
   yes)
      AC_MSG_ERROR([Invalid option. A subgrid model must be chosen.])
   ;;
   none)
   ;;
   GEAR)
Loic Hausammann's avatar
Loic Hausammann committed
1409
	with_subgrid_cooling=grackle_0
1410
	with_subgrid_chemistry=GEAR
Loic Hausammann's avatar
Loic Hausammann committed
1411
	with_subgrid_pressure_floor=GEAR
Loic Hausammann's avatar
Loic Hausammann committed
1412
	with_subgrid_stars=GEAR
Loic Hausammann's avatar
Loic Hausammann committed
1413
	with_subgrid_star_formation=GEAR
1414
	with_subgrid_feedback=none
1415
	with_subgrid_black_holes=none
1416
	enable_fof=no
1417
1418
1419
1420
   ;;
   EAGLE)
	with_subgrid_cooling=EAGLE
	with_subgrid_chemistry=EAGLE
1421
	with_subgrid_tracers=EAGLE
1422
	with_subgrid_entropy_floor=EAGLE
1423
1424
	with_subgrid_stars=EAGLE
	with_subgrid_star_formation=EAGLE
1425
	with_subgrid_feedback=EAGLE
1426
	with_subgrid_black_holes=EAGLE
1427
	enable_fof=yes
1428
1429
1430
1431
1432
1433
   ;;
   *)
      AC_MSG_ERROR([Unknown subgrid choice: $with_subgrid])
   ;;
esac

1434
1435
1436
1437
1438
1439
1440
1441
1442
1443
1444
1445
1446
1447
1448
1449
1450
1451
1452
1453
1454
1455
1456
1457
1458
1459
1460
# Check if FoF is on.
AC_ARG_ENABLE([fof],
   [AS_HELP_STRING([--enable-fof],
     [Activate the friends-of-friends (FoF) code.],
   )],
   [enable_fof="$enableval"],
   [enable_fof="no"]
)
if test "$enable_fof" = "yes"; then
   AC_DEFINE([WITH_FOF], 1, [Enable FoF])
fi

# Check if stand-alone FoF is on.
AC_ARG_ENABLE([stand-alone-fof],
   [AS_HELP_STRING([--enable-stand-alone-fof],
     [Activate the compilation of the stand-alone friends-of-friends (FoF) post-processing tool.],
   )],
   [enable_standalone_fof="$enableval"],
   [enable_standalone_fof="no"]
)
if test "$enable_standalone_fof" = "yes"; then
   enable_fof="yes + stand-alone tool"
   AC_DEFINE([WITH_FOF], 1, [Enable FoF])
   AC_DEFINE([WITH_STAND_ALONE_FOF], 1, [Enable stand-alone FoF])
fi
AM_CONDITIONAL([HAVESTANDALONEFOF],[test $enable_standalone_fof = "yes"])

1461
1462
1463
# Gravity scheme.
AC_ARG_WITH([gravity],
   [AS_HELP_STRING([--with-gravity=<scheme>],
1464
      [Gravity scheme to use @<:@basic, with-potential, with-multi-softening default: with-multi-softening@:>@]
1465
1466
   )],
   [with_gravity="$withval"],
1467
   [with_gravity="with-multi-softening"]
1468
)
1469

1470
1471
case "$with_gravity" in
   with-potential)
1472
      AC_DEFINE([POTENTIAL_GRAVITY], [1], [Basic gravity scheme with potential calculation])
1473
   ;;
1474
   with-multi-softening)
1475
      AC_DEFINE([MULTI_SOFTENING_GRAVITY], [1], [Gravity scheme with per-particle type softening value and background particles])
1476
   ;;
1477
1478
   basic)
      AC_DEFINE([DEFAULT_GRAVITY], [1], [Basic gravity scheme])
1479
1480
1481
1482
1483
   ;;
   *)
      AC_MSG_ERROR([Unknown gravity scheme: $with_gravity])
   ;;
esac
1484

1485
1486
1487
# Hydro scheme.
AC_ARG_WITH([hydro],
   [AS_HELP_STRING([--with-hydro=<scheme>],
1488
      [Hydro dynamics to use @<:@gadget2, minimal, pressure-entropy, pressure-energy, pressure-en