forked from verilator/verilator
-
Notifications
You must be signed in to change notification settings - Fork 0
/
configure.ac
595 lines (537 loc) · 22 KB
/
configure.ac
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
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
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
# DESCRIPTION: Process this file with autoconf to produce a configure script.
#
# Copyright 2003-2024 by Wilson Snyder. Verilator is free software; you
# can redistribute it and/or modify it under the terms of either the GNU Lesser
# General Public License Version 3 or the Perl Artistic License Version 2.0.
# SPDX-License-Identifier: LGPL-3.0-only OR Artistic-2.0
# When releasing, also update header of Changes file, and CmakeLists.txt,
# and commit using "devel release" or "Version bump" message
# Then 'make maintainer-dist'
#AC_INIT([Verilator],[#.### YYYY-MM-DD])
#AC_INIT([Verilator],[#.### devel])
AC_INIT([Verilator],[5.021 devel],
[https://verilator.org],
[verilator],[https://verilator.org])
AC_CONFIG_HEADERS(src/config_package.h)
AC_CONFIG_FILES(Makefile src/Makefile src/Makefile_obj include/verilated.mk include/verilated_config.h verilator.pc verilator-config.cmake verilator-config-version.cmake)
# Version
AC_MSG_RESULT([configuring for $PACKAGE_STRING])
PACKAGE_VERSION_NUMBER=`AS_ECHO("$PACKAGE_VERSION") | sed 's/ .*//g'`
AC_SUBST(PACKAGE_VERSION_NUMBER)
AC_DEFINE_UNQUOTED([PACKAGE_VERSION_NUMBER_STRING],["$PACKAGE_VERSION_NUMBER"],[Package version as a number])
VERILATOR_VERSION_INTEGER=`AS_ECHO("$PACKAGE_VERSION") | [sed 's/\([0-9]\)\.\([0-9][0-9][0-9]\) .*/\1\2000/g']`
AC_SUBST(VERILATOR_VERSION_INTEGER)
AC_DEFINE_UNQUOTED([PACKAGE_VERSION_STRING_CHAR],
[static const char* const PACKAGE_STRING_UNUSED = "$PACKAGE_STRING";],
[Package version as a number])
AC_SUBST(PACKAGE_VERSION_STRING_CHAR)
# Ignore automake flags passed by Ubuntu builds
AC_ARG_ENABLE([dependency-tracking],
[AS_HELP_STRING([--disable-dependency-tracking], [ignored])])
AC_ARG_ENABLE([maintainer-mode],
[AS_HELP_STRING([--enable-maintainer-mode], [ignored])])
AC_ARG_ENABLE([silent-rules],
[AS_HELP_STRING([--disable-silent-rules], [ignored])])
# Flag to enable linking specific libraries statically
AC_MSG_CHECKING(whether to perform partial static linking of Verilator binary)
AC_ARG_ENABLE([partial-static],
[AS_HELP_STRING([--disable-partial-static],
[By default, for Verilation performance, Verilator
is linked against some of its dependencies
statically. Use this to link the Verilator binary
fully dynamically.])],
[case "${enableval}" in
yes) CFG_ENABLE_PARTIAL_STATIC=yes ;;
no) CFG_ENABLE_PARTIAL_STATIC=no ;;
*) AC_MSG_ERROR([bad value '${enableval}' for --disable-partial-static]) ;;
esac],
CFG_ENABLE_PARTIAL_STATIC=yes)
AC_MSG_RESULT($CFG_ENABLE_PARTIAL_STATIC)
# Flag to enable linking Verilator with tcmalloc if available
AC_MSG_CHECKING(whether to use tcmalloc)
AC_ARG_ENABLE([tcmalloc],
[AS_HELP_STRING([--enable-tcmalloc],
[Use libtcmalloc_minimal for faster dynamic memory
management in Verilator binary @<:@default=check@:>@])],
[case "${enableval}" in
yes) CFG_WITH_TCMALLOC=yes ;;
no) CFG_WITH_TCMALLOC=no ;;
*) AC_MSG_ERROR([bad value '${enableval}' for --enable-tcmalloc]) ;;
esac],
[CFG_WITH_TCMALLOC=check;])
AC_MSG_RESULT($CFG_WITH_TCMALLOC)
# Flag to enable coverage build
AC_MSG_CHECKING(whether to build for coverage collection)
AC_ARG_ENABLE([coverage],
[AS_HELP_STRING([--enable-coverage],
[Build Verilator for code coverage collection.
For developers only.])],
[case "${enableval}" in
yes) CFG_ENABLE_COVERAGE=yes ;;
no) CFG_ENABLE_COVERAGE=no ;;
*) AC_MSG_ERROR([bad value '${enableval}' for --enable-coverage]) ;;
esac],
CFG_ENABLE_COVERAGE=no)
AC_MSG_RESULT($CFG_ENABLE_COVERAGE)
# Special Substitutions - CFG_WITH_DEFENV
AC_MSG_CHECKING(whether to use hardcoded paths)
AC_ARG_ENABLE([defenv],
[AS_HELP_STRING([--disable-defenv],
[disable using some hardcoded data paths extracted
from some default environment variables (the default
is to use hardcoded paths) in Verilator binary])],
[case "${enableval}" in
yes) CFG_WITH_DEFENV=yes ;;
no) CFG_WITH_DEFENV=no ;;
*) AC_MSG_ERROR([bad value ${enableval} for --disable-defenv]) ;;
esac],
CFG_WITH_DEFENV=yes)
AC_SUBST(CFG_WITH_DEFENV)
AC_MSG_RESULT($CFG_WITH_DEFENV)
# Special Substitutions - CFG_WITH_CCWARN
AC_MSG_CHECKING(whether to show and stop on compilation warnings)
AC_ARG_ENABLE([ccwarn],
[AS_HELP_STRING([--enable-ccwarn],
[enable showing and stopping on compilation warnings
in Verilator binary and Verilated makefiles])],
[case "${enableval}" in
yes) CFG_WITH_CCWARN=yes ;;
no) CFG_WITH_CCWARN=no ;;
*) AC_MSG_ERROR([bad value ${enableval} for --enable-ccwarn]) ;;
esac],
[case "x${VERILATOR_AUTHOR_SITE}" in
x) CFG_WITH_CCWARN=no ;;
*) CFG_WITH_CCWARN=yes ;;
esac]
)
AC_SUBST(CFG_WITH_CCWARN)
AC_MSG_RESULT($CFG_WITH_CCWARN)
# Special Substitutions - CFG_WITH_LONGTESTS
AC_MSG_CHECKING(whether to run long tests)
AC_ARG_ENABLE([longtests],
[AS_HELP_STRING([--enable-longtests],
[enable running long developer tests])],
[case "${enableval}" in
yes) CFG_WITH_LONGTESTS=yes ;;
no) CFG_WITH_LONGTESTS=no ;;
*) AC_MSG_ERROR([bad value ${enableval} for --enable-longtests]) ;;
esac],
[case "x${VERILATOR_AUTHOR_SITE}" in
x) CFG_WITH_LONGTESTS=no ;;
*) CFG_WITH_LONGTESTS=yes ;;
esac]
)
AC_SUBST(CFG_WITH_LONGTESTS)
AC_MSG_RESULT($CFG_WITH_LONGTESTS)
# Compiler flags (ensure they are not empty to avoid configure defaults)
CFLAGS="$CFLAGS "
CPPFLAGS="$CPPFLAGS "
CXXFLAGS="$CXXFLAGS "
LDFLAGS="$LDFLAGS "
# Checks for programs.
AC_PROG_CC
AC_PROG_CXX
AC_PROG_INSTALL
AC_LANG_PUSH(C++)
cxx_version=$($CXX --version | head -1)
AC_MSG_RESULT([compiler is $CXX --version = $cxx_version])
AC_MSG_CHECKING([that C++ compiler can compile simple program])
AC_RUN_IFELSE(
[AC_LANG_SOURCE([int main() { return 0; }])],
AC_MSG_RESULT(yes),
AC_MSG_RESULT(no);AC_MSG_ERROR([a working C++ compiler is required]),
AC_MSG_RESULT(yes))
AC_CHECK_PROG(AR,ar,ar)
if test "x$AR" = "x" ; then
AC_MSG_ERROR([Cannot find "ar" in your PATH, please install it])
fi
AC_PATH_PROG(PERL,perl)
if test "x$PERL" = "x" ; then
AC_MSG_ERROR([Cannot find "perl" in your PATH, please install it])
fi
AC_PATH_PROG(PYTHON3,python3)
if test "x$PYTHON3" = "x" ; then
AC_MSG_ERROR([Cannot find "python3" in your PATH, please install it])
fi
AC_PATH_PROG(LEX,flex)
if test "x$LEX" = "x" ; then
AC_MSG_ERROR([Cannot find "flex" in your PATH, please install it])
fi
flex_version=$($LEX --version | head -1)
AC_MSG_RESULT([$LEX --version = $flex_version])
AC_PATH_PROG(YACC,bison)
if test "x$YACC" = "x" ; then
AC_MSG_ERROR([Cannot find "bison" in your PATH, please install it])
fi
bison_version=$($YACC --version | head -1)
AC_MSG_RESULT([$YACC --version = $bison_version])
AC_CHECK_PROG(OBJCACHE,ccache,ccache)
if test "x$OBJCACHE" != "x" ; then
objcache_version=$($OBJCACHE --version | head -1)
AC_MSG_RESULT([objcache is $OBJCACHE --version = $objcache_version])
fi
# Checks for libraries.
# Checks for typedefs, structures
AC_CHECK_TYPE(size_t,unsigned int)
AC_TYPE_SIZE_T
# Checks for compiler characteristics.
AC_C_INLINE
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <new>], [[int* a=new int; delete a; ]])],
[], [AC_MSG_ERROR([$CXX does not seem to successfully compile a simple C++ program])])
AC_DEFUN([_MY_CXX_CHECK_FLAG],
[# _MY_CXX_CHECK_FLAG(flag) -- Check if compiler supports specific options
# Set $_my_result appropriately
ACO_SAVE_CXXFLAGS="$CXXFLAGS"
# -Werror needed otherwise unknown -Wno-div-by-zero won't report problems
# new/delete is needed to find -faligned-new link problem on Darwin
CXXFLAGS="$CXXFLAGS $1 -Werror"
AC_MSG_CHECKING([whether $CXX accepts $1])
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <new>], [[int* a=new int; delete a; ]])],
[_my_result=yes
if test -s conftest.err; then
if grep -e "$1" conftest.err >/dev/null; then
_my_result=no
fi
fi],
[_my_result=no])
# GCC is annoying, trying to be helpful, it postpones unknown -Wno-
# options if there's no error We want to see them regardless, so try
# forcing an error and see if we get a gcc warning
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[an_error "intentional-error-for-test.h"
]],[])],
[], # Ignore ok exit
[if test -s conftest.err; then
if grep -e "$1" conftest.err >/dev/null; then
_my_result=no
fi
fi])
AC_MSG_RESULT($_my_result)
CXXFLAGS="$ACO_SAVE_CXXFLAGS"
])
AC_DEFUN([_MY_CXX_CHECK_IFELSE],
[# _MY_CXX_CHECK_IFELSE(option,action-if-supported,action-if-not-supported)
# Check if compiler supports specific option. If it does,
# do action-if-supported, otherwise do action-if-not-supported
_MY_CXX_CHECK_FLAG($1)
if test "$_my_result" = "yes" ; then
true
$2
else
true
$3
fi
])
AC_DEFUN([_MY_CXX_CHECK_SET],
[# _MY_CXX_CHECK_SET(variable,option)
# Check if compiler supports specific option. If it does,
# set variable to option, only if not previously set.
if test "$$1" = ""; then
_MY_CXX_CHECK_IFELSE($2, $1="$2")
fi
])
AC_DEFUN([_MY_CXX_CHECK_OPT],
[# _MY_CXX_CHECK_OPT(variable,option)
# Check if compiler supports specific option. If it does,
# append option to variable
_MY_CXX_CHECK_IFELSE($2, $1="$$1 $2")
])
AC_DEFUN([_MY_LDLIBS_CHECK_FLAG],
[# _MY_LDLIBS_CHECK_FLAG(flag) -- Check if linker supports specific options
# Set $_my_result appropriately
ACO_SAVE_LIBS="$LIBS"
LIBS="$LIBS $1"
AC_MSG_CHECKING([whether $CXX linker accepts $1])
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[]])],
[_my_result=yes
if test -s conftest.err; then
if grep -e "$1" conftest.err >/dev/null; then
_my_result=no
fi
fi],
[_my_result=no])
AC_MSG_RESULT($_my_result)
LIBS="$ACO_SAVE_LIBS"
])
AC_DEFUN([_MY_LDLIBS_CHECK_IFELSE],
[# _MY_LDLIBS_CHECK_IFELSE(flag,action-if-supported,action-if-not-supported)
# Check if linker supports specific flag, if it does do action-if-supported
# otherwise do action-if-not-supported
_MY_LDLIBS_CHECK_FLAG($1)
if test "$_my_result" = "yes" ; then
true
$2
else
true
$3
fi
])
AC_DEFUN([_MY_LDLIBS_CHECK_OPT],
[# _MY_LDLIBS_CHECK_OPT(variable, flag) -- Check if linker supports specific
# options. If it does, append flag to variable.
_MY_LDLIBS_CHECK_IFELSE($2, $1="$$1 $2")
])
# Add the coverage flags early as they influence later checks.
if test "$CFG_ENABLE_COVERAGE" = "yes"; then
_MY_CXX_CHECK_OPT(CXX,--coverage)
# Otherwise inline may not show as uncovered
# If we use this then e.g. verilated.h functions properly show up
# if unused.
# However, VerilatedSerialize::write then changes from covered
# to uncovered (in G++ 9.3.0) even with all inlining turned off.
# Having false negative coverage is more effort then missing negatives.
# Also this seems to explode the runtime (since a lot more data).
# _MY_CXX_CHECK_OPT(CXX,-fkeep-inline-functions)
# Otherwise static may not show as uncovered
_MY_CXX_CHECK_OPT(CXX,-fkeep-static-functions)
# Exceptions can pollute the branch coverage data
_MY_CXX_CHECK_OPT(CXX,-fno-exceptions)
# Define-out some impossible stuff
_MY_CXX_CHECK_OPT(CXX,-DVL_GCOV)
fi
# Compiler flags to enable profiling
_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_PROFILE,-pg)
AC_SUBST(CFG_CXXFLAGS_PROFILE)
# Flag to select newest language standard supported
# Macros work such that first option that passes is the one we take
# Currently enable c++17/c++14 due to packaged SystemC dependency
# c++17 is the newest that Verilator is regularly tested to support
# c++14 is the oldest that Verilator supports
# gnu is required for Cygwin to compile verilated.h successfully
#_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=gnu++20)
#_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=c++20)
_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=gnu++17)
_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=c++17)
_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=gnu++14)
_MY_CXX_CHECK_SET(CFG_CXXFLAGS_STD_NEWEST,-std=c++14)
AC_SUBST(CFG_CXXFLAGS_STD_NEWEST)
# Flags for compiling Verilator internals including parser, and Verilated files
# These turn on extra warnings and are only used with 'configure --enable-ccwarn'
_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_WEXTRA,-Wextra)
_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_WEXTRA,-Wfloat-conversion)
_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_WEXTRA,-Wlogical-op)
_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_WEXTRA,-Wthread-safety)
AC_SUBST(CFG_CXXFLAGS_WEXTRA)
# Flags for coroutine support for dynamic scheduling
_MY_CXX_CHECK_SET(CFG_CXXFLAGS_COROUTINES,-fcoroutines-ts)
_MY_CXX_CHECK_SET(CFG_CXXFLAGS_COROUTINES,-fcoroutines)
_MY_CXX_CHECK_SET(CFG_CXXFLAGS_COROUTINES,-fcoroutines-ts -Wno-deprecated-experimental-coroutine)
AC_SUBST(CFG_CXXFLAGS_COROUTINES)
# HAVE_COROUTINES
# Check if coroutines are supported at all
AC_MSG_CHECKING([whether coroutines are supported by $CXX])
ACO_SAVE_CXXFLAGS="$CXXFLAGS"
CXXFLAGS="$CXXFLAGS $CFG_CXXFLAGS_COROUTINES"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([
#ifdef __clang__
#define __cpp_impl_coroutine 1
#endif
#include <coroutine>
],[[]])],
[_my_result=yes
AC_DEFINE([HAVE_COROUTINES],[1],[Defined if coroutines are supported by $CXX])],
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <experimental/coroutine>],[[]])],
[_my_result=yes
AC_DEFINE([HAVE_COROUTINES],[1],[Defined if coroutines are supported by $CXX])],
[_my_result=no])])
AC_MSG_RESULT($_my_result)
CXXFLAGS="$ACO_SAVE_CXXFLAGS"
AC_SUBST(HAVE_COROUTINES)
# Flags for compiling Verilator internals including parser always
_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_SRC,-Qunused-arguments)
_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_SRC,-faligned-new)
_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_SRC,-Wno-unused-parameter)
_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_SRC,-Wno-shadow)
AC_SUBST(CFG_CXXFLAGS_SRC)
# Flags for compiling Verilator parser always (in addition to above CFG_CXXFLAGS_SRC)
_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_PARSER,-Wno-char-subscripts)
_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_PARSER,-Wno-null-conversion)
_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_PARSER,-Wno-parentheses-equality)
_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_PARSER,-Wno-unused)
AC_SUBST(CFG_CXXFLAGS_PARSER)
# Flags for compiling the debug version of Verilator (in addition to above CFG_CXXFLAGS_SRC)
if test "$CFG_ENABLE_COVERAGE" = "no"; then # Do not optimize for the coverage build
_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_DEBUG,-Og)
fi
_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_DEBUG,-ggdb)
_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_DEBUG,-gz)
AC_SUBST(CFG_CXXFLAGS_DEBUG)
# Flags for linking the debug version of Verilator (in addition to above CFG_LDFLAGS_SRC)
_MY_LDLIBS_CHECK_OPT(CFG_LDFLAGS_DEBUG,-gz)
AC_SUBST(CFG_LDFLAGS_DEBUG)
# Flags for Verilated makefile
# For example, -Wno-div-by-zero isn't in 4.1.2
# Random code often does / 0. Unfortunately VL_DIV_I(0,0) will warn
# without this flag, even though there's a conditional to prevent the divide.
# We still don't add no-div-by-zero as it throws message to stdout, though doesn't die.
#_MY_CXX_CHECK_OPT(-Wno-div-by-zero)
# For some reason -faligned-new does not work under Travis w/ clang but the
# configure test doesn't catch this either
AS_IF([test "x$TRAVIS_COMPILER" != xclang], [_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_NO_UNUSED,-faligned-new)])
CFG_CXX_FLAGS_CMAKE="-faligned-new"
m4_foreach([cflag],[
[-fbracket-depth=4096],
[-fcf-protection=none],
[-mno-cet],
[-Qunused-arguments],
[-Wno-bool-operation],
[-Wno-c++11-narrowing],
[-Wno-constant-logical-operand],
[-Wno-non-pod-varargs],
[-Wno-parentheses-equality],
[-Wno-shadow],
[-Wno-sign-compare],
[-Wno-tautological-bitwise-compare],
[-Wno-uninitialized],
[-Wno-unused-but-set-parameter],
[-Wno-unused-but-set-variable],
[-Wno-unused-parameter],
[-Wno-unused-variable]],[
_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_NO_UNUSED,cflag)
# CMake will test what flags work itself, so pass all flags through to it
CFG_CXX_FLAGS_CMAKE="$CFG_CXX_FLAGS_CMAKE cflag"
])
AC_SUBST(CFG_CXXFLAGS_NO_UNUSED)
AC_SUBST(CFG_CXX_FLAGS_CMAKE)
# Find multithread linker flags
m4_foreach([ldflag], [
[-mt],
[-pthread],
[-lpthread],
[-latomic]],[
_MY_LDLIBS_CHECK_OPT(CFG_LDLIBS_THREADS,ldflag)
# CMake will test what flags work itself, so pass all flags through to it
CFG_LDFLAGS_THREADS_CMAKE="$CFG_LDFLAGS_THREADS_CMAKE ldflag"
])
AC_SUBST(CFG_LDLIBS_THREADS)
AC_SUBST(CFG_LDFLAGS_THREADS_CMAKE)
# If 'mold' is installed, use it to link for faster buildtimes
_MY_LDLIBS_CHECK_OPT(CFG_LDFLAGS_SRC, -fuse-ld=mold)
_MY_LDLIBS_CHECK_OPT(CFG_LDFLAGS_VERILATED, -fuse-ld=mold)
# When linking partially statically
if test "$CFG_ENABLE_PARTIAL_STATIC" = "yes"; then
_MY_LDLIBS_CHECK_OPT(CFG_LDFLAGS_SRC, -static-libgcc)
_MY_LDLIBS_CHECK_OPT(CFG_LDFLAGS_SRC, -static-libstdc++)
_MY_LDLIBS_CHECK_OPT(CFG_LDFLAGS_SRC, -Xlinker -gc-sections)
LTCMALLOC=-l:libtcmalloc_minimal.a
else
LTCMALLOC=-ltcmalloc_minimal
fi
AC_SUBST(CFG_LDFLAGS_SRC)
AC_SUBST(CFG_LDFLAGS_VERILATED)
# The pthread library is required by tcmalloc, so add it if it exists. If it
# does not, the tcmalloc check below will fail anyway, and linking against
# pthreads is harmless otherwise.
CFG_LIBS="$LIBS $CFG_LIBS"
_MY_LDLIBS_CHECK_OPT(CFG_LIBS, -lpthread)
# Check libraries for MingW
_MY_LDLIBS_CHECK_OPT(CFG_LIBS, -lbcrypt)
_MY_LDLIBS_CHECK_OPT(CFG_LIBS, -lpsapi)
# Check if tcmalloc is available based on --enable-tcmalloc
_MY_LDLIBS_CHECK_IFELSE(
$LTCMALLOC,
[if test "$CFG_WITH_TCMALLOC" != "no"; then
CFG_LIBS="$LTCMALLOC $CFG_LIBS";
# If using tcmalloc, add some extra options to make the compiler not assume
# it is using it's own versions of the standard library functions
_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_SRC,-fno-builtin-malloc)
_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_SRC,-fno-builtin-calloc)
_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_SRC,-fno-builtin-realloc)
_MY_CXX_CHECK_OPT(CFG_CXXFLAGS_SRC,-fno-builtin-free)
fi],
[if test "$CFG_WITH_TCMALLOC" = "yes"; then
AC_MSG_ERROR([--enable-tcmalloc was given but test for ${LTCMALLOC} failed])
fi])
AC_SUBST(CFG_LIBS)
# Need C++14 at least
#Alternative: AX_CXX_COMPILE_STDCXX([14])
AC_DEFUN([_MY_CXX_CHECK_CXX_VER],
[# _MY_CXX_CHECK_CXX_VER(flag) -- Check if compiler runs C++14
# Set $_my_result
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([#include <thread>
#if (__cplusplus < 201402L)
# error "Too old"
#endif
], [[ ]])],
[_my_result=yes
if test -s conftest.err; then
if grep -e "$1" conftest.err >/dev/null; then
_my_result=no
fi
fi],
[_my_result=no])
])
# Add $CFG_CXXFLAGS_STD only if can't compile correctly otherwise,
# as adding std= when not needed can cause errors with the C++ std library.
CFG_CXXFLAGS_STD=$CFG_CXXFLAGS_STD_NEWEST
AC_MSG_CHECKING(whether $CXX supports C++14)
_MY_CXX_CHECK_CXX_VER()
AC_MSG_RESULT($_my_result)
if test "$_my_result" = "no" ; then
CXXFLAGS="$CXXFLAGS $CFG_CXXFLAGS_STD"
CFG_CXX_FLAGS_CMAKE="$CFG_CXX_FLAGS_CMAKE $CFG_CXXFLAGS_STD"
AC_MSG_CHECKING(whether $CXX supports C++14 with $CFG_CXXFLAGS_STD)
_MY_CXX_CHECK_CXX_VER()
AC_MSG_RESULT($_my_result)
else
# CFG_CXXFLAGS_STD is also propagated to include/verilated.mk.in
# make sure we use the same std flag while compiling verilator and verilated design
CFG_CXXFLAGS_STD=""
fi
if test "$_my_result" = "no" ; then
AC_MSG_NOTICE([[]])
AC_MSG_ERROR([[the $CXX compiler appears to not support C++14.
Verilator requires a C++14 or newer compiler.]])
fi
AC_SUBST(CFG_CXXFLAGS_STD)
# Compiler precompiled header options (assumes either gcc or clang++)
AC_MSG_CHECKING([for $CXX precompile header include option])
if $CXX --help | grep include-pch >/dev/null 2>/dev/null ; then
# clang
CFG_CXXFLAGS_PCH_I=-include-pch
CFG_GCH_IF_CLANG=.gch
else
# GCC
CFG_CXXFLAGS_PCH_I=-include
CFG_GCH_IF_CLANG=
fi
AC_MSG_RESULT($CFG_CXXFLAGS_PCH_I)
AC_SUBST(CFG_CXXFLAGS_PCH_I)
AC_SUBST(CFG_GCH_IF_CLANG)
# Checks for library functions.
AC_CHECK_MEMBER([struct stat.st_mtim.tv_nsec],
[AC_DEFINE([HAVE_STAT_NSEC],[1],[Defined if struct stat has st_mtim.tv_nsec])],
[], [#include <sys/stat.h>])
# HAVE_SYSTEMC
# - If found the default search path has it, so support is always enabled.
# - If not found or not system-wide, user can set SYSTEMC_INCLUDE.
# AC_CHECK_HEADERS seems to not locate on Travis-CI but include does work.
AC_MSG_CHECKING([whether SystemC is found (in system path)])
ACO_SAVE_LIBS="$LIBS"
LIBS="$LIBS -lsystemc"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[#include <systemc.h>
extern "C" int sc_main(int argc, char* argv[]) { return 0; }
]],[[sc_version()]])],
[_my_result=yes
AC_DEFINE([HAVE_SYSTEMC],[1],[Defined if have SystemC library])],
[_my_result=no])
AC_MSG_RESULT($_my_result)
LIBS="$ACO_SAVE_LIBS"
AC_SUBST(HAVE_SYSTEMC)
# Checks for system services
# Other install directories
pkgdatadir=${datadir}/verilator
AC_SUBST(pkgdatadir)
pkgconfigdir=${datadir}/pkgconfig
AC_SUBST(pkgconfigdir)
AC_OUTPUT
AC_MSG_RESULT([])
AC_MSG_RESULT([Now type 'make' (or sometimes 'gmake') to build Verilator.])
AC_MSG_RESULT([])