summaryrefslogtreecommitdiff
path: root/mk/config.mk.in
blob: 79191af52e0316ab892d4cff293ad81e42ab78f2 (plain)
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
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
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
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
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
793
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
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
#								 -*-makefile-*-
# @configure_input@
#
################################################################################
#
# config.mk.in
#
# This file supplies defaults for many tweakable build configuration
# options.  Some of the defaults are filled in by the autoconf-generated
# configure script.
#
# DO NOT EDIT THIS FILE!
#
# 	- config.mk is auto-generated from config.mk.in by configure.
#	  If you edit config.mk your changes will be spammed.
#
#	- Settings in this file may be overriden by giving replacement
#	  definitions in build.mk.  See build.mk.sample for a good
#	  starting point for a build.mk file.
#
#	  If you don't have a build.mk file then you get defaults for everything.
#	  The defaults should provide a reasonable vanilla build.

# TOP: the top of the fptools hierarchy, absolute path.
# On Windows this is a c:/foo/bar style path.
TOP		= @hardtop@

include $(TOP)/mk/project.mk

# By default, be verbose
V = 1

################################################################################
#
#		Global configuration options
#
################################################################################

NO_INCLUDE_DEPS = NO
NO_INCLUDE_PKGDATA = NO

################################################################################
#
# Variables that control how the compiler itself is built
#
################################################################################

# The compiler used to build GHC is $(GHC).  To change the actual compiler
# used, re-configure with --with-ghc=<path-to-ghc>.

# Extra option flags to pass to the compiler that compiles the compiler
# (Ones that are essential are wired into compiler/Makefile)
# Typical options to use here:
#
#	-DDEBUG		include debugging code and assertions (will make the
#			compiler slower and produce debugging output, but useful
#			for development)
#
#	-dcore-lint	check the types after every pass of the compiler;
#			a pretty strong internal check of the compiler being
#			used to compile GHC.  Useful when bootstrapping.
GhcHcOpts=-Rghc-timing

# Extra options added to specific stages of the compiler bootstrap.
# These are placed later on the command line, and may therefore
# override options from $(GhcHcOpts).
#
# See Note [Stage number in build variables].
#
# -haddock is needed so the GHCi :doc command can find docs
#   in the .hi-files for the ghc library
GhcStage1HcOpts=
GhcStage2HcOpts=-O2 -haddock
GhcStage3HcOpts=-O2 -haddock


# Note [Stage number in build variables].
#
# There are (unfortunately) two different naming schemes for build variables
# specific to a certain stage.
#
# * GhcStage1HcOpts/GhcStage2HcOpts/GhcStage3HcOpts:
#
#   The stage number refers to the compiler stage being built (ghc library
#   and executable).
#
# * SRC_HC_OPTS_STAGE$4 and SRC_HC_WARNING_OPTS_STAGE$4:
#
#   The stage number refers to the compiler stage the options are passed to.

GhcDebugged=NO

# GhcProfiled=YES means compile a profiled stage-2 compiler
GhcProfiled=NO

# WITH_TERMINFO can be used to disable terminfo support throughout the compiler
# and its tools. This is handy in the case of cross-compilation, where we may
# not have an ncurses build for the target.
ifeq "$(TargetOS_CPP)" "ios"
# iOS has no terminfo support
WITH_TERMINFO=NO
else ifeq "$(Windows_Target)" "YES"
WITH_TERMINFO=NO
else
WITH_TERMINFO=YES
endif

ifeq "$(findstring $(TargetOS_CPP),linux freebsd dragonfly openbsd netbsd solaris2 kfreebsdgnu haiku linux-android)" ""
TargetElf = NO
else
TargetElf = YES
endif

# Some platforms don't support shared libraries
NoSharedLibsPlatformList = \
	powerpc-ibm-aix \
	x86_64-unknown-mingw32 \
	i386-unknown-mingw32

ifeq "$(SOLARIS_BROKEN_SHLD)" "YES"
NoSharedLibsPlatformList += i386-unknown-solaris2
endif

PlatformSupportsSharedLibs = $(if $(filter $(TARGETPLATFORM),\
    $(NoSharedLibsPlatformList)),NO,YES)

# DYNAMIC_BY_DEFAULT says whether this compiler will default to
# building dynamic executables, i.e. -dynamic is on.  We do this for
# most platforms because it lets us use the system dynamic linker
# instead of our own linker for GHCi.
#
# Currently this isn't possible on Windows, and we have not yet enabled
# it on i386 while we consider the performance implications.
#
ifeq "$(TargetOS_CPP)" "mingw32"
DYNAMIC_BY_DEFAULT = NO
else ifeq "$(TargetArch_CPP)" "i386"
DYNAMIC_BY_DEFAULT = NO
else
DYNAMIC_BY_DEFAULT = YES
endif

# For now, we unconditionally disable dynamic-by-default, as the
# cabal-install's that are in the wild don't handle it properly.
DYNAMIC_BY_DEFAULT = NO

# If building both v and dyn ways, then use -dynamic-too to build them.
# This makes the build faster.
DYNAMIC_TOO = YES

# Use the dynamic way when building programs in the GHC tree. In
# particular, this means that GHCi will use DLLs rather than loading
# object files directly.
ifeq "$(TargetOS_CPP)" "mingw32"
# This doesn't work on Windows yet
DYNAMIC_GHC_PROGRAMS = NO
DYNAMIC_TOO=NO
else ifeq "$(PlatformSupportsSharedLibs)" "NO"
DYNAMIC_GHC_PROGRAMS = NO
else
DYNAMIC_GHC_PROGRAMS = YES
endif

# Build a compiler that will build *unregisterised* libraries and
# binaries by default.  Unregisterised code is supposed to compile and
# run without any support for architecture-specific assembly mangling,
# register assignment or tail-calls, and is therefore a good way to get
# started when porting GHC to new architectures.
#
# NOTE: the stage1 compiler will be a registerised binary (assuming
# the compiler you build with is generating registerised binaries), but
# the stage2 compiler will be an unregisterised binary.
#
GhcUnregisterised=@Unregisterised@

# Build a compiler with a native code generator backend
# (as well as a C backend)
#
# Target platforms supported:
#   i386, powerpc, powerpc64, sparc
#   IOS is not supported
ArchSupportsNCG=$(strip $(patsubst $(TargetArch_CPP), YES, $(findstring $(TargetArch_CPP), i386 x86_64 powerpc powerpc64 powerpc64le sparc)))
OsSupportsNCG=$(strip $(patsubst $(TargetOS_CPP), YES, $(patsubst ios,,$(TargetOS_CPP))))

GhcWithNativeCodeGen := $(strip\
    $(if $(filter YESYESNO,\
		  $(OsSupportsNCG)$(ArchSupportsNCG)$(GhcUnregisterised)),YES,NO))

# ArchSupportsSMP should be set iff there is support for that arch in
# includes/stg/SMP.h
ifeq "$(TargetArch_CPP)" "arm"
# We don't support load/store barriers pre-ARMv7. See #10433.
ArchSupportsSMP=$(if $(filter $(ARM_ISA),ARMv5 ARMv6),NO,YES)
else
ArchSupportsSMP=$(strip $(patsubst $(TargetArch_CPP), YES, $(findstring $(TargetArch_CPP), i386 x86_64 sparc powerpc powerpc64 powerpc64le aarch64)))
endif

# The THREADED_RTS requires `BaseReg` to be in a register and the
# `GhcUnregisterised` mode doesn't allow that.
GhcWithSMP := $(strip $(if $(filter YESNO, $(ArchSupportsSMP)$(GhcUnregisterised)),YES,NO))

# Whether to include GHCi in the compiler.  Depends on whether the RTS linker
# has support for this OS/ARCH combination.

OsSupportsGHCi=$(strip $(patsubst $(TargetOS_CPP), YES, $(findstring $(TargetOS_CPP), mingw32 linux solaris2 freebsd dragonfly netbsd openbsd darwin kfreebsdgnu)))
ArchSupportsGHCi=$(strip $(patsubst $(TargetArch_CPP), YES, $(findstring $(TargetArch_CPP), i386 x86_64 powerpc powerpc64 powerpc64le sparc sparc64 arm aarch64)))

ifeq "$(OsSupportsGHCi)$(ArchSupportsGHCi)" "YESYES"
GhcWithInterpreter=YES
else
GhcWithInterpreter=$(if $(findstring YES,$(DYNAMIC_GHC_PROGRAMS)),YES,NO)
endif

# GhcEnableTablesNextToCode tells us whether the target architecture
# supports placing info tables directly before the entry code
# (see TABLES_NEXT_TO_CODE in the RTS).  Whether we actually compile for
# TABLES_NEXT_TO_CODE depends on whether we're building unregisterised
# code or not, which may be decided by options to the compiler later.
ifneq "$(findstring $(TargetArch_CPP)X, ia64X powerpc64X powerpc64leX)" ""
GhcEnableTablesNextToCode=NO
else
GhcEnableTablesNextToCode=YES
endif

# Whether to use libffi for adjustors (foreign import "wrapper") or
# not.  If we have built-in support (rts/Adjustor.c) then we use that,
# otherwise we fall back on libffi, which is slightly slower.
ArchHasAdjustorSupport = $(if $(findstring $(TargetArch_CPP),i386 x86_64),YES,NO)
ifeq "$(ArchHasAdjustorSupport)" "YES"
UseLibFFIForAdjustors=NO
else
UseLibFFIForAdjustors=YES
endif

# On Windows we normally want to make a relocatable bindist, to we
# ignore flags like libdir
ifeq "$(Windows_Host)" "YES"
RelocatableBuild = YES
else
RelocatableBuild = NO
endif

# needs to be after $(RelocatableBuild) is set above
include $(TOP)/mk/install.mk

# When building bindists we set this to yes so that the binaries are as
# portable as possible.
BeConservative = NO

ExtraMakefileSanityChecks = NO

#------------------------------------------------------------------------------
# Options for Libraries

# Which directory (in libraries/) contains the integer library?
INTEGER_LIBRARY=integer-gmp

# We build the libraries at least the "vanilla" way (way "v")
# Technically we don't need the v way if DYNAMIC_GHC_PROGRAMS is YES,
# but with -dynamic-too it's cheap, and makes life easier.
GhcLibWays = v

# In addition to the normal sequential way, the default is to also build
# profiled prelude libraries
# $(if $(filter ...)) allows controlling this expression from build.mk.
GhcLibWays += $(if $(filter $(BUILD_PROF_LIBS),NO),,p)

# Backward compatibility: although it would be cleaner to test for
# PlatformSupportsSharedLibs, or perhaps a new variable BUILD_SHARED_LIBS,
# some users currently expect that DYNAMIC_GHC_PROGRAMS=NO in build.mk implies
# that dyn is not added to GhcLibWays.
GhcLibWays += $(if $(filter $(DYNAMIC_GHC_PROGRAMS),NO),,dyn)

# Handy way to test whether we're building shared libs or not.
BuildSharedLibs=$(strip $(if $(findstring dyn,$(GhcLibWays)),YES,NO))

# In addition, the RTS is built in some further variations.  Ways that
# make sense here:
#
#   thr           : threaded
#   thr_p         : threaded + profiled + eventlog
#   debug         : debugging + eventlog
#   thr_debug     : debugging + threaded, + eventlog
#   l             : eventlog
#   p             : profiled + eventlog
#   thr_l         : threaded + eventlog
#
# Note how there are a few cases which are handled specially (in packageHsLibs)
# to reduce the number of distinct ways,
#
#   debug     implies  eventlog
#   profiled  implies  eventlog
#
# This means, for instance, that there is no debug_l way.
#
GhcRTSWays=l

# Usually want the debug version
GhcRTSWays += debug

# We always have the threaded versions, but note that SMP support may be disabled
# (see GhcWithSMP).
GhcRTSWays += thr thr_debug thr_l
GhcRTSWays += $(if $(findstring p, $(GhcLibWays)),thr_p,)
GhcRTSWays += $(if $(findstring dyn, $(GhcLibWays)),dyn debug_dyn thr_dyn thr_debug_dyn l_dyn thr_l_dyn,)
GhcRTSWays += $(if $(findstring p, $(GhcLibWays)),thr_debug_p debug_p,)

# We can only build GHCi threaded if we have a threaded RTS:
GhcThreaded = $(if $(findstring thr,$(GhcRTSWays)),YES,NO)

# Option flags to pass to GHC when it's compiling modules in
# fptools/libraries.  Typically these are things like -O or
# -dcore-lint or -H32m.  The ones that are *essential* are wired into
# the build system.
#
# 	-O(2) is pretty desirable, otherwise no inlining of prelude
#		things (incl "+") happens when compiling with this compiler
#
#       -haddock is needed so the GHCi :doc command can find the boot
#               library docs in the respective .hi-files

GhcLibHcOpts=-O2 -haddock

# Strip local symbols from libraries?  This can make the libraries smaller,
# but makes debugging somewhat more difficult.  Doesn't work with all ld's.
#
StripLibraries=NO

# ----------------------------------------------------------------------------
# Section splitting
#
# Similar to -ffunction-sections -fdata-sections in GCC.
#
# Set SplitSections=YES or NO in your build.mk to override the default.
#
# This is not supported on Darwin (where you can use subsections-via-symbols
# instead) and Windows is disabled until we figure the linking performance
# issues related to BFD out. (See #11445, #12913 and related tickets.)
OsSupportsSplitSections=$(if $(filter $(TargetOS_CPP),darwin),NO,YES)
SupportsSplitSections=$(if $(and $(filter YES,$(OsSupportsSplitSections)),\
                                   $(filter YES,$(LdIsGNULd))),YES,NO)
SplitSections ?= $(SupportsSplitSections)

# ----------------------------------------------------------------------------

# There are a number of things which technically depend on GHC (e.g. if
# ghc changes then Haskell files may be compiled differently, or Cabal
# packages may be configured differently). By default we therefore
# have dependencies on the compiler executable.

# However, in practice, having a dependency on GHC is just a pain: We
# normally don't want to spend time recompiling other things while
# we're working on the compiler, and even if we did, GHC will normally
# decide compilation isn't needed anyway. So by setting LAX_DEPENDENCIES
# to YES you can turn these dependencies into order-only dependencies,
# i.e. GHC must exist, but if it's newer than other targets then
# rebuilding is not necessary.

LAX_DEPENDENCIES = NO

# ----------------------------------------------------------------------------
# Options for GHC's RTS

# Build an optimised RTS.  Remember that we need to turn on
# optimisation both for C code (-optc-O2) and .cmm code (-O2).  For
# the debugging RTS flavour, rts/ghc.mk overrides these to turn off
# optimisation.
GhcRtsHcOpts=-O2
GhcRtsCcOpts=-O2 -fomit-frame-pointer -g

# Configuration for libffi
UseSystemLibFFI=@UseSystemLibFFI@
# Flags to go into package.conf for rts
FFILibDir=@FFILibDir@
FFIIncludeDir=@FFIIncludeDir@

# GHC needs arch-specific tweak at least in
#     rts/Libdw.c:set_initial_registers()
GhcRtsWithLibdw=$(strip $(if $(filter $(TargetArch_CPP),i386 x86_64),@UseLibdw@,NO))

################################################################################
#
#		Paths (see paths.mk)
#
################################################################################

BINDIST                 = NO
BIN_DIST_NAME           = ghc-$(ProjectVersion)
BIN_DIST_PREP_DIR       = bindistprep/$(BIN_DIST_NAME)
BIN_DIST_PREP_TAR       = bindistprep/$(BIN_DIST_NAME)-$(TARGETPLATFORM).tar
BIN_DIST_PREP_TAR_COMP ?= $(BIN_DIST_PREP_TAR).$(TAR_COMP_EXT)
BIN_DIST_TAR_COMP       = $(BIN_DIST_NAME)-$(TARGETPLATFORM).tar.$(TAR_COMP_EXT)

# -----------------------------------------------------------------------------
# Utilities programs: flags

# If you want to give any standard flags to pretty much any utility
# (see utils.mk for a complete list), by adding a line here
#
# 	SRC_P_OPTS += ...
#
# where P is the utility. For example, to add -O to all Haskell
# compilations,
#
#	SRC_HC_OPTS += -O


# SRC_HC_OPTS includes flags to be added to *every* Haskell
# compilation.  Setting SRC_HC_OPTS is a good way to set the default
# optimisation level (-O) and heap size (-H<size>).
#
# SRC_HC_OPTS is *not* for adding flags that are required to make your
# build work.  Examples:
#
#  - instead of using -pgmc/-pgma-/-pgml, use the --with-gcc option to configure
#
#  - if you need -optc, -opta, or -optl flags, the CONF_CC_* and CONF_LD_*
#    variables are more appropriate (set via configure)
#
# Note that SRC_HC_OPTS are added to every Haskell compilation,
# including when using the bootstrapping compiler (stage 0), So don't
# put options here that are only supported by very recent GHCs.
#
SRC_HC_OPTS += -H32m -O


# See Note [Stage number in build variables].
SRC_HC_OPTS_STAGE0 =
SRC_HC_OPTS_STAGE1 =
SRC_HC_OPTS_STAGE2 =

# Warning suppression flags. See mk/warnings.mk.
SRC_CC_WARNING_OPTS =
SRC_HC_WARNING_OPTS =

# See Note [Stage number in build variables].
SRC_HC_WARNING_OPTS_STAGE0 =
SRC_HC_WARNING_OPTS_STAGE1 =
SRC_HC_WARNING_OPTS_STAGE2 =

# -----------------------------------------------------------------------------
# Names of programs in the GHC tree

MKDIRHIER           = $(INPLACE_BIN)/mkdirhier

GENERATED_FILE  = chmod a-w
EXECUTABLE_FILE = chmod +x

#-----------------------------------------------------------------------------
# Installed GHC

# $(GHC) points to installed version of the compiler.
#
# NOTE: Don't override $(GHC) in build.mk, use configure --with-ghc instead
# (because the version numbers have to be calculated).

GHC := @WithGhc@
# If we have a make dependency on c:/ghc/ghc, and the file is actually
# called c:/ghc/ghc.exe, then make will think that ghc doesn't exist
# and that it doesn't know how to create it.
ifneq "$(wildcard $(GHC).exe)" ""
GHC := $(GHC).exe
endif

GHC_STAGE0  = $(GHC)
GHC_STAGE1  = $(ghc-stage1_INPLACE)
GHC_STAGE2  = $(ghc-stage2_INPLACE)
GHC_STAGE3  = $(ghc-stage3_INPLACE)

BOOTSTRAPPING_CONF = libraries/bootstrapping.conf

INPLACE_PACKAGE_CONF = $(INPLACE_LIB)/package.conf.d

GhcVersion	= @GhcVersion@
GhcPatchLevel	= @GhcPatchLevel@
GhcMajVersion	= @GhcMajVersion@
GhcMinVersion	= @GhcMinVersion@

# Canonicalised ghc version number, used for easy (integer) version
# comparisons.  We must expand $(GhcMinVersion) to two digits by
# adding a leading zero if necessary:
ifneq "$(findstring $(GhcMinVersion), 0 1 2 3 4 5 6 7 8 9)" ""
GhcCanonVersion = $(GhcMajVersion)0$(GhcMinVersion)
else
GhcCanonVersion = $(GhcMajVersion)$(GhcMinVersion)
endif

GHC_PACKAGE_DB_FLAG = @GHC_PACKAGE_DB_FLAG@

#-----------------------------------------------------------------------------
# C compiler
#
# NB. Don't override $(CC) using build.mk,  re-configure using
# the flag CC=<blah> instead.  The reason is that the configure script
# needs to know which gcc you're using in order to perform its tests.

GccVersion            = @GccVersion@

# TargetPlatformFull retains the string passed to configure so we have it in
# the necessary format to pass to libffi's configure.
TargetPlatformFull    = @TargetPlatformFull@
GccLT46         = @GccLT46@
GccIsClang      = @GccIsClang@

CC              = @CC@
CC_STAGE0       = @CC_STAGE0@
CC_STAGE1       = $(CC)
CC_STAGE2       = $(CC)
CC_STAGE3       = $(CC)

AS              = @CC@
AS_STAGE0       = @CC_STAGE0@
AS_STAGE1       = $(AS)
AS_STAGE2       = $(AS)
AS_STAGE3       = $(AS)

# why no LD=@LD@ ?
LD_STAGE0       = @LD_STAGE0@
LD_STAGE1       = $(LD)
LD_STAGE2       = $(LD)
LD_STAGE3       = $(LD)

# Cross-compiling options
# See Note [CrossCompiling vs Stage1Only]
CrossCompiling        = @CrossCompiling@

# Change this to YES if you're building a cross-compiler and don't
# want to build stage 2.
# See Note [CrossCompiling vs Stage1Only]
# See Note [Stage1Only vs stage=1]
Stage1Only = NO

# Installed tools prefix:
#    we add prefix to crosscompiler GHC only (ghc-stage1),
#    not cross-built GHC (not ghc-stage2).
CrossCompilePrefix    = $(if $(filter YES,$(Stage1Only)),@CrossCompilePrefix@,)

# Install stage 2 by default, or stage 1 in the cross compiler
# case. Can be changed to 3
INSTALL_GHC_STAGE= $(if $(filter YES,$(Stage1Only)),1,2)

# Note [CrossCompiling vs Stage1Only]
#
# There are 4 possible settings:
#
# 1 CrossCompiling=NO Stage1Only=NO
#   The default.
#
# 2 CrossCompiling=NO Stage1Only=YES
#   Don't build ghc-stage2. See Note [Stage1Only vs stage=1].
#
# 3 CrossCompiling=YES Stage1Only=YES
#   Building a cross-compiler (ghc-stage1). See [1] and
#   Note [Stage1Only vs stage=1].
#
# 4 CrossCompiling=YES Stage1Only=NO
#   Cross-compiling GHC itself. See [1].
#
# [1] https://gitlab.haskell.org/ghc/ghc/wikis/building/cross-compiling

# Note [Stage1Only vs stage=1]
#
# Stage1Only=YES means:
#   - don't build ghc-stage2 (the executable)
#   - don't build utils that rely on ghc-stage2
#     See Note [No stage2 packages when CrossCompiling or Stage1Only] in
#     ./ghc.mk.
#   - install ghc-stage1 instead of ghc-stage2
#   - install the ghc-pkg that was built with the stage0 compiler
#   - (*do* still build compiler/stage2 (i.e. the ghc library))
#   - (*do* still build all other libraries)
#
# stage=1 means:
#   - don't build compiler/stage2 (i.e. the ghc library)
#   - don't build ghc-stage2 (the executable)
#   Note: these are the only two things it does. If you want to exclude more
#   stuff, combine it with Stage1Only=YES, or run make in the ghc or compiler
#   directory.
#
# running make in the ghc or compiler directory means:
#   - don't build any packages in the libraries/ directory, except the ones
#     listed in PACKAGES_STAGE0 (i.e. the boot libraries)
#
# You may wonder why Stage1Only=YES still builds compiler/stage2. Quoting
# simonmar in #7639:
#
#     "strictly speaking building compiler/stage2 is correct, because it is
#     the ghc package that can be used with [ghc-stage1]. If you don't
#     want to build it, then setting stage=1 in your mk/build.mk should
#     disable it."

# C compiler and linker flags from configure (e.g. -m<blah> to select
# correct C compiler backend). The stage number is the stage of GHC
# that is being used to compile with.
CONF_CC_OPTS_STAGE0 = @CONF_CC_OPTS_STAGE0@
CONF_CC_OPTS_STAGE1 = @CONF_CC_OPTS_STAGE1@
CONF_CC_OPTS_STAGE2 = @CONF_CC_OPTS_STAGE2@
CONF_GCC_LINKER_OPTS_STAGE0 = @CONF_GCC_LINKER_OPTS_STAGE0@
CONF_GCC_LINKER_OPTS_STAGE1 = @CONF_GCC_LINKER_OPTS_STAGE1@
CONF_GCC_LINKER_OPTS_STAGE2 = @CONF_GCC_LINKER_OPTS_STAGE2@
CONF_LD_LINKER_OPTS_STAGE0 = @CONF_LD_LINKER_OPTS_STAGE0@
CONF_LD_LINKER_OPTS_STAGE1 = @CONF_LD_LINKER_OPTS_STAGE1@
CONF_LD_LINKER_OPTS_STAGE2 = @CONF_LD_LINKER_OPTS_STAGE2@
CONF_CPP_OPTS_STAGE0 = @CONF_CPP_OPTS_STAGE0@
CONF_CPP_OPTS_STAGE1 = @CONF_CPP_OPTS_STAGE1@
CONF_CPP_OPTS_STAGE2 = @CONF_CPP_OPTS_STAGE2@
CONF_HC_OPTS_STAGE0 = @CONF_HC_OPTS_STAGE0@
CONF_HC_OPTS_STAGE1 = @CONF_HC_OPTS_STAGE1@
CONF_HC_OPTS_STAGE2 = @CONF_HC_OPTS_STAGE2@

# The .hsc files aren't currently safe for cross-compilation on Windows:
#     libraries\haskeline\.\System\Console\Haskeline\Backend\Win32.hsc:160
#     directive "let" is not safe for cross-compilation
ifneq "$(Windows_Host)" "YES"
SRC_HSC2HS_OPTS += --cross-safe
endif
SRC_HSC2HS_OPTS += $(foreach d,$(GMP_INCLUDE_DIRS),-I$(d))

define set_stage_HSC2HS_OPTS
# $1 = stage
SRC_HSC2HS_OPTS_STAGE$1 += $$(addprefix --cflag=,$$(filter-out -O,$$(SRC_CC_OPTS) $$(CONF_CC_OPTS_STAGE$1)))
SRC_HSC2HS_OPTS_STAGE$1 += $$(addprefix --cflag=,$$(CONF_CPP_OPTS_STAGE$1))
SRC_HSC2HS_OPTS_STAGE$1 += $$(addprefix --lflag=,$$(CONF_GCC_LINKER_OPTS_STAGE$1))
endef
$(eval $(call set_stage_HSC2HS_OPTS,0))
$(eval $(call set_stage_HSC2HS_OPTS,1))
$(eval $(call set_stage_HSC2HS_OPTS,2))
ifeq "$(CrossCompiling)" "YES"
SRC_HSC2HS_OPTS_STAGE1 += --cross-compile
SRC_HSC2HS_OPTS_STAGE2 += --cross-compile
ifeq "$(Windows_Target)" "YES"
# We'll assume we compile with gcc or clang, and both support `-S` and can as such use the
# --via-asm pass, which should be faster and is required for cross compiling to windows, as
# the c compiler complains about non-constant expressions even though they are constant and
# end up as constants in the assembly.
SRC_HSC2HS_OPTS_STAGE1 += --via-asm
SRC_HSC2HS_OPTS_STAGE2 += --via-asm
endif
endif
SRC_HSC2HS_OPTS_STAGE0 += --cflag=-D$(HostArch_CPP)_HOST_ARCH --cflag=-D$(HostOS_CPP)_HOST_OS
SRC_HSC2HS_OPTS_STAGE1 += --cflag=-D$(TargetArch_CPP)_HOST_ARCH --cflag=-D$(TargetOS_CPP)_HOST_OS
SRC_HSC2HS_OPTS_STAGE2 += --cflag=-D$(TargetArch_CPP)_HOST_ARCH --cflag=-D$(TargetOS_CPP)_HOST_OS

ifeq "$(TARGETPLATFORM)" "i386-unknown-mingw32"
WINDRES = $(INPLACE_MINGW)/bin/windres
else ifeq "$(TARGETPLATFORM)" "x86_64-unknown-mingw32"
WINDRES = $(INPLACE_MINGW)/bin/windres
endif

#-----------------------------------------------------------------------------
# Mingwex Library
#
HaveLibMingwEx	= @HaveLibMingwEx@
ifeq "$(TARGETPLATFORM)" "i386-unknown-mingw32"
DLLTOOL			= inplace/mingw/bin/dlltool.exe
else ifeq "$(TARGETPLATFORM)" "x86_64-unknown-mingw32"
DLLTOOL			= inplace/mingw/bin/dlltool.exe
endif

#-----------------------------------------------------------------------------
# Other standard (ha!) Unix utilities

AR			= @ArCmd@
AR_OPTS			= @ArArgs@
ArSupportsAtFile = @ArSupportsAtFile@

AR_STAGE0 = @AR_STAGE0@
AR_STAGE1 = $(AR)
AR_STAGE2 = $(AR)
AR_STAGE3 = $(AR)
AR_OPTS_STAGE0 = @AR_OPTS_STAGE0@
AR_OPTS_STAGE1 = $(AR_OPTS)
AR_OPTS_STAGE2 = $(AR_OPTS)
AR_OPTS_STAGE3 = $(AR_OPTS)
EXTRA_AR_ARGS_STAGE0 = $(EXTRA_AR_ARGS)
EXTRA_AR_ARGS_STAGE1 = $(EXTRA_AR_ARGS)
EXTRA_AR_ARGS_STAGE2 = $(EXTRA_AR_ARGS)
EXTRA_AR_ARGS_STAGE3 = $(EXTRA_AR_ARGS)
ArSupportsAtFile_STAGE0 = @ArSupportsAtFile_STAGE0@
ArSupportsAtFile_STAGE1 = $(ArSupportsAtFile)
ArSupportsAtFile_STAGE2 = $(ArSupportsAtFile)
ArSupportsAtFile_STAGE3 = $(ArSupportsAtFile)

CONTEXT_DIFF		= @ContextDiffCmd@
CP			= cp

# It's not easy to separate the CPP program from its flags, as
# AC_PROG_CPP defines CPP as "/usr/bin/gcc -E"
CPP			= @CPP@ @CPPFLAGS@
HS_CPP			= @HaskellCPPCmd@ @HaskellCPPArgs@

FIND			= @FindCmd@

#
# Sigh - the autoconf macro for INSTALL will subst a relative path to the fallback
# install-sh script (if chosen). This not terribly useful to us, so we convert
# it into an abs. path.
#
INSTALL			= @INSTALL@
INSTALL			:= $(subst .././install-sh,$(TOP)/install-sh,$(INSTALL))

LN_S			= @LN_S@
MV			= mv
PIC			= pic
RANLIB_CMD = @RANLIB_CMD@
REAL_RANLIB_CMD = @REAL_RANLIB_CMD@
SED			= @SedCmd@
SHELL			= @SHELL@

HaveDtrace		= @HaveDtrace@
USE_DTRACE = $(HaveDtrace)
DTRACE			= @DtraceCmd@

LD_NO_GOLD = @LdNoGoldCmd@
LD = @LdCmd@
NM = @NmCmd@
AR = @ArCmd@
OBJDUMP = @ObjdumpCmd@

CLANG = @ClangCmd@
LLC = @LlcCmd@
OPT = @OptCmd@

# GNU ld supports input via a linker script, which is useful to avoid
# overflowing command-line length limits.
LdIsGNULd		= @LdIsGNULd@

# Set to YES if ld has the --build-id flag.  Sometimes we need to
# disable it with --build-id=none.
LdHasBuildId	        = @LdHasBuildId@

# Set to YES if ld has the --no_compact_unwind flag. See #5019
# and compiler/main/DriverPipeline.hs.
LdHasNoCompactUnwind	= @LdHasNoCompactUnwind@

# On MSYS, building with SplitObjs=YES fails with
#   ar: Bad file number
# see #3201.  We need to specify a smaller max command-line size
# to work around it.  32767 doesn't work; 30000 does, but says
#     xargs: value for -s option should be < 28153
# so we now use 20000 to be comfortably below this bound
XARGS = xargs
ifeq "$(Windows_Host)" "YES"
XARGS_OPTS = -s 20000
endif

ifeq "$(TARGETPLATFORM)" "x86_64-unknown-mingw32"
STRIP_CMD      = $(TOP)/inplace/mingw/bin/strip.exe
else ifeq "$(TARGETPLATFORM)" "arm-unknown-linux"
# The Cortex A8 hardware apparently has a bug which ld.gold will check for;
# however in order to do so it must have unstripped executables lest we
# see warnings of the form (see #10376, #10464),
#
#     /usr/bin/ld.gold: warning: cannot scan executable section 1 of ... for
#     Cortex-A8 erratum because it has no mapping symbols.
#
# Consequently we disabling stripping by default on this architecture.
# The hack of using `:` to disable stripping is implemented by ghc-cabal.
STRIP_CMD      = :
else
STRIP_CMD      = @StripCmd@
endif
PATCH_CMD      = @PatchCmd@
TAR_CMD        = @TarCmd@
BZIP2_CMD      = @Bzip2Cmd@
GZIP_CMD       = @GzipCmd@
XZ_CMD         = @XzCmd@

# xz is default compression
TAR_COMP      ?= xz

# select compression command and .tar extension based on TAR_COMP value
ifeq "$(TAR_COMP)" "bzip2"
TAR_COMP_CMD  = $(BZIP2_CMD) $(TAR_COMP_OPTS)
TAR_COMP_EXT  = bz2
else ifeq "$(TAR_COMP)" "gzip"
TAR_COMP_CMD  = $(GZIP_CMD) $(TAR_COMP_OPTS)
TAR_COMP_EXT  = gz
else ifeq "$(TAR_COMP)" "xz"
TAR_COMP_CMD  = $(XZ_CMD) $(TAR_COMP_OPTS)
TAR_COMP_EXT  = xz
else
$(error $$(TAR_COMP) set to unknown value "$(TAR_COMP)" (supported: "bzip2", "gzip", "xz"))
endif

ifeq "$(Windows_Host)" "YES"
TOUCH_CMD      = $(utils/touchy_dist_INPLACE)
TOUCH_DEP      = $(TOUCH_CMD)
else
TOUCH_CMD      = touch
TOUCH_DEP      =
endif

HSCOLOUR_CMD   = @HSCOLOUR@

TIME_CMD       = @TimeCmd@

#-----------------------------------------------------------------------------
# Sphinx stuff

SPHINXBUILD              = @SPHINXBUILD@
BUILD_MAN                = @BUILD_MAN@
BUILD_SPHINX_HTML        = @BUILD_SPHINX_HTML@
BUILD_SPHINX_PDF         = @BUILD_SPHINX_PDF@
SPHINXOPTS               = -D latex_paper_size=letter
XELATEX                  = @XELATEX@

#-----------------------------------------------------------------------------
# 		FPtools support software

#
# ghc-pkg
#
GHC_PKG		        = @GhcPkgCmd@

#
# Happy
#
HAPPY			= @HappyCmd@
HAPPY_VERSION		= @HappyVersion@
#
# Options to pass to Happy when we're going to compile the output with GHC
#
# TODO (int-index): restore the -c option when happy/pull/134 is merged.
SRC_HAPPY_OPTS		= -ag --strict

#
# Alex
#
ALEX			= @AlexCmd@
ALEX_VERSION		= @AlexVersion@
#
# Options to pass to Alex when we're going to compile the output with GHC
#
SRC_ALEX_OPTS = -g
# The compiler isn't using the Unicode support in Alex 3.0 yet, in fact we do our own
# Unicode handling, so diable Alex's.
compiler_ALEX_OPTS = --latin1

# Should we build haddock docs?
HADDOCK_DOCS = YES
# And HsColour the sources?
ifeq "$(HSCOLOUR_CMD)" ""
HSCOLOUR_SRCS = NO
else
HSCOLOUR_SRCS = YES
endif

# Build and install the "extra" packages (see ./packages)?
BUILD_EXTRA_PKGS = NO

################################################################################
#
#    Library configure arguments
#
################################################################################

CONFIGURE_ARGS = @CONFIGURE_ARGS@

################################################################################
#
#    To be passed to sub-builds
#
################################################################################

ICONV_INCLUDE_DIRS = @ICONV_INCLUDE_DIRS@
ICONV_LIB_DIRS = @ICONV_LIB_DIRS@

GMP_INCLUDE_DIRS = @GMP_INCLUDE_DIRS@
GMP_LIB_DIRS = @GMP_LIB_DIRS@
GMP_PREFER_FRAMEWORK = @GMP_PREFER_FRAMEWORK@
GMP_FORCE_INTREE = @GMP_FORCE_INTREE@

CURSES_LIB_DIRS = @CURSES_LIB_DIRS@

# See Note [Disable -O2 in unregisterised mode]
# Be careful: 'GhcUnregisterised' should be defined earlier in this file.
ifeq "$(GhcUnregisterised)" "YES"
GhcStage1HcOpts=
GhcStage2HcOpts=
GhcStage3HcOpts=

GhcLibHcOpts=
endif

# Note [Disable -O2 in unregisterised mode]
# Disable -O2 optimization in unregisterised mode. Otherwise amount
# of generated C code # makes things very slow to compile (~5 minutes
# on core-i7 for 'compiler/hsSyn/HsExpr.hs') and sometimes not compile
# at all: powerpc64 overflows TOC section on 'compiler/hsSyn/HsExpr.hs'
#         ia64 overflows short data section on 'compiler/main/DynFlags.hs'