configure.sh 40.1 KB
Newer Older
1
#!/bin/sh
John Koleszar's avatar
John Koleszar committed
2
##
3
##  configure.sh
John Koleszar's avatar
John Koleszar committed
4
##
5
##  This script is sourced by the main configure script and contains
Yaowu Xu's avatar
Yaowu Xu committed
6
##  utility functions and other common bits that aren't strictly libaom
7
8
9
##  related.
##
##  This build system is based in part on the FFmpeg configure script.
John Koleszar's avatar
John Koleszar committed
10
11
12
13
14
15
16
##


#
# Logging / Output Functions
#
die_unknown(){
Johann's avatar
Johann committed
17
18
19
20
  echo "Unknown option \"$1\"."
  echo "See $0 --help for available options."
  clean_temp_files
  exit 1
John Koleszar's avatar
John Koleszar committed
21
22
23
}

die() {
Johann's avatar
Johann committed
24
25
26
27
28
29
30
31
32
  echo "$@"
  echo
  echo "Configuration failed. This could reflect a misconfiguration of your"
  echo "toolchains, improper options selected, or another problem. If you"
  echo "don't see any useful error messages above, the next step is to look"
  echo "at the configure error log file ($logfile) to determine what"
  echo "configure was trying to do when it died."
  clean_temp_files
  exit 1
John Koleszar's avatar
John Koleszar committed
33
34
35
}

log(){
Johann's avatar
Johann committed
36
  echo "$@" >>$logfile
John Koleszar's avatar
John Koleszar committed
37
38
39
}

log_file(){
Johann's avatar
Johann committed
40
41
42
  log BEGIN $1
  cat -n $1 >>$logfile
  log END $1
John Koleszar's avatar
John Koleszar committed
43
44
45
}

log_echo() {
Johann's avatar
Johann committed
46
47
  echo "$@"
  log "$@"
John Koleszar's avatar
John Koleszar committed
48
49
50
}

fwrite () {
Johann's avatar
Johann committed
51
52
53
  outfile=$1
  shift
  echo "$@" >> ${outfile}
John Koleszar's avatar
John Koleszar committed
54
55
56
}

show_help_pre(){
Johann's avatar
Johann committed
57
58
59
60
61
62
63
64
  for opt in ${CMDLINE_SELECT}; do
    opt2=`echo $opt | sed -e 's;_;-;g'`
    if enabled $opt; then
      eval "toggle_${opt}=\"--disable-${opt2}\""
    else
      eval "toggle_${opt}=\"--enable-${opt2} \""
    fi
  done
John Koleszar's avatar
John Koleszar committed
65

Johann's avatar
Johann committed
66
  cat <<EOF
John Koleszar's avatar
John Koleszar committed
67
68
69
70
71
Usage: configure [options]
Options:

Build options:
  --help                      print this message
72
  --log=yes|no|FILE           file configure log is written to [config.log]
John Koleszar's avatar
John Koleszar committed
73
74
  --target=TARGET             target platform tuple [generic-gnu]
  --cpu=CPU                   optimize for a specific cpu rather than a family
Attila Nagy's avatar
Attila Nagy committed
75
  --extra-cflags=ECFLAGS      add ECFLAGS to CFLAGS [$CFLAGS]
76
  --extra-cxxflags=ECXXFLAGS  add ECXXFLAGS to CXXFLAGS [$CXXFLAGS]
John Koleszar's avatar
John Koleszar committed
77
78
79
80
  ${toggle_extra_warnings}    emit harmless warnings (always non-fatal)
  ${toggle_werror}            treat warnings as errors, if possible
                              (not available with all compilers)
  ${toggle_optimizations}     turn on/off compiler optimization flags
81
  ${toggle_pic}               turn on/off Position Independent Code
John Koleszar's avatar
John Koleszar committed
82
83
84
85
  ${toggle_ccache}            turn on/off compiler cache
  ${toggle_debug}             enable/disable debug mode
  ${toggle_gprof}             enable/disable gprof profiling instrumentation
  ${toggle_gcov}              enable/disable gcov coverage instrumentation
86
  ${toggle_thumb}             enable/disable building arm assembly in thumb mode
87
88
  ${toggle_dependency_tracking}
                              disable to speed up one-time build
John Koleszar's avatar
John Koleszar committed
89
90
91
92
93
94
95
96
97
98
99
100

Install options:
  ${toggle_install_docs}      control whether docs are installed
  ${toggle_install_bins}      control whether binaries are installed
  ${toggle_install_libs}      control whether libraries are installed
  ${toggle_install_srcs}      control whether sources are installed


EOF
}

show_help_post(){
Johann's avatar
Johann committed
101
  cat <<EOF
John Koleszar's avatar
John Koleszar committed
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118


NOTES:
    Object files are built at the place where configure is launched.

    All boolean options can be negated. The default value is the opposite
    of that shown above. If the option --disable-foo is listed, then
    the default value for foo is enabled.

Supported targets:
EOF
  show_targets ${all_platforms}
  echo
  exit 1
}

show_targets() {
Johann's avatar
Johann committed
119
120
121
122
123
124
125
126
127
128
129
130
131
132
  while [ -n "$*" ]; do
    if [ "${1%%-*}" = "${2%%-*}" ]; then
      if [ "${2%%-*}" = "${3%%-*}" ]; then
        printf "    %-24s %-24s %-24s\n" "$1" "$2" "$3"
        shift; shift; shift
      else
        printf "    %-24s %-24s\n" "$1" "$2"
        shift; shift
      fi
    else
      printf "    %-24s\n" "$1"
      shift
    fi
  done
John Koleszar's avatar
John Koleszar committed
133
134
135
}

show_help() {
Johann's avatar
Johann committed
136
137
  show_help_pre
  show_help_post
John Koleszar's avatar
John Koleszar committed
138
139
140
141
142
143
}

#
# List Processing Functions
#
set_all(){
Johann's avatar
Johann committed
144
145
146
147
148
  value=$1
  shift
  for var in $*; do
    eval $var=$value
  done
John Koleszar's avatar
John Koleszar committed
149
150
151
}

is_in(){
Johann's avatar
Johann committed
152
153
154
155
156
157
  value=$1
  shift
  for var in $*; do
    [ $var = $value ] && return 0
  done
  return 1
John Koleszar's avatar
John Koleszar committed
158
159
160
}

add_cflags() {
Johann's avatar
Johann committed
161
162
  CFLAGS="${CFLAGS} $@"
  CXXFLAGS="${CXXFLAGS} $@"
John Koleszar's avatar
John Koleszar committed
163
164
165
}

add_cflags_only() {
Johann's avatar
Johann committed
166
  CFLAGS="${CFLAGS} $@"
John Koleszar's avatar
John Koleszar committed
167
168
169
}

add_cxxflags_only() {
Johann's avatar
Johann committed
170
  CXXFLAGS="${CXXFLAGS} $@"
John Koleszar's avatar
John Koleszar committed
171
172
173
}

add_ldflags() {
Johann's avatar
Johann committed
174
  LDFLAGS="${LDFLAGS} $@"
John Koleszar's avatar
John Koleszar committed
175
176
177
}

add_asflags() {
Johann's avatar
Johann committed
178
  ASFLAGS="${ASFLAGS} $@"
John Koleszar's avatar
John Koleszar committed
179
180
181
}

add_extralibs() {
Johann's avatar
Johann committed
182
  extralibs="${extralibs} $@"
John Koleszar's avatar
John Koleszar committed
183
184
185
186
187
}

#
# Boolean Manipulation Functions
#
188
enable_feature(){
Johann's avatar
Johann committed
189
  set_all yes $*
John Koleszar's avatar
John Koleszar committed
190
191
}

192
disable_feature(){
Johann's avatar
Johann committed
193
  set_all no $*
John Koleszar's avatar
John Koleszar committed
194
195
196
}

enabled(){
Johann's avatar
Johann committed
197
  eval test "x\$$1" = "xyes"
John Koleszar's avatar
John Koleszar committed
198
199
200
}

disabled(){
Johann's avatar
Johann committed
201
  eval test "x\$$1" = "xno"
John Koleszar's avatar
John Koleszar committed
202
203
}

204
205
206
207
# Iterates through positional parameters, checks to confirm the parameter has
# not been explicitly (force) disabled, and enables the setting controlled by
# the parameter when the setting is not disabled.
# Note: Does NOT alter RTCD generation options ($RTCD_OPTIONS).
John Koleszar's avatar
John Koleszar committed
208
soft_enable() {
Johann's avatar
Johann committed
209
210
  for var in $*; do
    if ! disabled $var; then
211
      enabled $var || log_echo "  enabling $var"
Johann's avatar
Johann committed
212
213
214
      enable_feature $var
    fi
  done
John Koleszar's avatar
John Koleszar committed
215
216
}

217
218
219
220
# Iterates through positional parameters, checks to confirm the parameter has
# not been explicitly (force) enabled, and disables the setting controlled by
# the parameter when the setting is not enabled.
# Note: Does NOT alter RTCD generation options ($RTCD_OPTIONS).
John Koleszar's avatar
John Koleszar committed
221
soft_disable() {
Johann's avatar
Johann committed
222
223
  for var in $*; do
    if ! enabled $var; then
224
      disabled $var || log_echo "  disabling $var"
Johann's avatar
Johann committed
225
226
227
      disable_feature $var
    fi
  done
John Koleszar's avatar
John Koleszar committed
228
229
230
231
232
233
}

#
# Text Processing Functions
#
toupper(){
Johann's avatar
Johann committed
234
  echo "$@" | tr abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ
John Koleszar's avatar
John Koleszar committed
235
236
237
}

tolower(){
Johann's avatar
Johann committed
238
  echo "$@" | tr ABCDEFGHIJKLMNOPQRSTUVWXYZ abcdefghijklmnopqrstuvwxyz
John Koleszar's avatar
John Koleszar committed
239
240
241
242
243
244
}

#
# Temporary File Functions
#
source_path=${0%/*}
245
enable_feature source_path_used
246
if [ -z "$source_path" ] || [ "$source_path" = "." ]; then
Johann's avatar
Johann committed
247
248
  source_path="`pwd`"
  disable_feature source_path_used
John Koleszar's avatar
John Koleszar committed
249
250
251
fi

if test ! -z "$TMPDIR" ; then
Johann's avatar
Johann committed
252
  TMPDIRx="${TMPDIR}"
John Koleszar's avatar
John Koleszar committed
253
elif test ! -z "$TEMPDIR" ; then
Johann's avatar
Johann committed
254
  TMPDIRx="${TEMPDIR}"
John Koleszar's avatar
John Koleszar committed
255
else
Johann's avatar
Johann committed
256
  TMPDIRx="/tmp"
John Koleszar's avatar
John Koleszar committed
257
fi
258
RAND=$(awk 'BEGIN { srand(); printf "%d\n",(rand() * 32768)}')
Adrian Grange's avatar
Adrian Grange committed
259
260
261
262
263
264
TMP_H="${TMPDIRx}/aom-conf-$$-${RAND}.h"
TMP_C="${TMPDIRx}/aom-conf-$$-${RAND}.c"
TMP_CC="${TMPDIRx}/aom-conf-$$-${RAND}.cc"
TMP_O="${TMPDIRx}/aom-conf-$$-${RAND}.o"
TMP_X="${TMPDIRx}/aom-conf-$$-${RAND}.x"
TMP_ASM="${TMPDIRx}/aom-conf-$$-${RAND}.asm"
John Koleszar's avatar
John Koleszar committed
265
266

clean_temp_files() {
Johann's avatar
Johann committed
267
268
  rm -f ${TMP_C} ${TMP_CC} ${TMP_H} ${TMP_O} ${TMP_X} ${TMP_ASM}
  enabled gcov && rm -f ${TMP_C%.c}.gcno ${TMP_CC%.cc}.gcno
John Koleszar's avatar
John Koleszar committed
269
270
271
272
273
274
}

#
# Toolchain Check Functions
#
check_cmd() {
Johann's avatar
Johann committed
275
276
277
  enabled external_build && return
  log "$@"
  "$@" >>${logfile} 2>&1
John Koleszar's avatar
John Koleszar committed
278
279
280
}

check_cc() {
Johann's avatar
Johann committed
281
282
283
284
  log check_cc "$@"
  cat >${TMP_C}
  log_file ${TMP_C}
  check_cmd ${CC} ${CFLAGS} "$@" -c -o ${TMP_O} ${TMP_C}
John Koleszar's avatar
John Koleszar committed
285
286
}

John Koleszar's avatar
John Koleszar committed
287
check_cxx() {
Johann's avatar
Johann committed
288
289
290
291
  log check_cxx "$@"
  cat >${TMP_CC}
  log_file ${TMP_CC}
  check_cmd ${CXX} ${CXXFLAGS} "$@" -c -o ${TMP_O} ${TMP_CC}
John Koleszar's avatar
John Koleszar committed
292
293
}

John Koleszar's avatar
John Koleszar committed
294
check_cpp() {
Johann's avatar
Johann committed
295
296
297
298
  log check_cpp "$@"
  cat > ${TMP_C}
  log_file ${TMP_C}
  check_cmd ${CC} ${CFLAGS} "$@" -E -o ${TMP_O} ${TMP_C}
John Koleszar's avatar
John Koleszar committed
299
300
301
}

check_ld() {
Johann's avatar
Johann committed
302
303
304
  log check_ld "$@"
  check_cc $@ \
    && check_cmd ${LD} ${LDFLAGS} "$@" -o ${TMP_X} ${TMP_O} ${extralibs}
John Koleszar's avatar
John Koleszar committed
305
306
307
}

check_header(){
Johann's avatar
Johann committed
308
309
310
311
312
313
  log check_header "$@"
  header=$1
  shift
  var=`echo $header | sed 's/[^A-Za-z0-9_]/_/g'`
  disable_feature $var
  check_cpp "$@" <<EOF && enable_feature $var
John Koleszar's avatar
John Koleszar committed
314
315
316
317
318
319
#include "$header"
int x;
EOF
}

check_cflags() {
Johann's avatar
Johann committed
320
321
 log check_cflags "$@"
 check_cc -Werror "$@" <<EOF
John Koleszar's avatar
John Koleszar committed
322
323
324
325
int x;
EOF
}

John Koleszar's avatar
John Koleszar committed
326
check_cxxflags() {
Johann's avatar
Johann committed
327
  log check_cxxflags "$@"
John Koleszar's avatar
John Koleszar committed
328

Johann's avatar
Johann committed
329
330
331
332
  # Catch CFLAGS that trigger CXX warnings
  case "$CXX" in
    *c++-analyzer|*clang++|*g++*)
      check_cxx -Werror "$@" <<EOF
John Koleszar's avatar
John Koleszar committed
333
334
335
int x;
EOF
      ;;
Johann's avatar
Johann committed
336
337
    *)
      check_cxx -Werror "$@" <<EOF
John Koleszar's avatar
John Koleszar committed
338
339
340
341
342
343
int x;
EOF
      ;;
    esac
}

John Koleszar's avatar
John Koleszar committed
344
check_add_cflags() {
Johann's avatar
Johann committed
345
346
  check_cxxflags "$@" && add_cxxflags_only "$@"
  check_cflags "$@" && add_cflags_only "$@"
John Koleszar's avatar
John Koleszar committed
347
348
}

349
350
351
352
check_add_cxxflags() {
  check_cxxflags "$@" && add_cxxflags_only "$@"
}

John Koleszar's avatar
John Koleszar committed
353
check_add_asflags() {
Johann's avatar
Johann committed
354
355
  log add_asflags "$@"
  add_asflags "$@"
John Koleszar's avatar
John Koleszar committed
356
357
358
}

check_add_ldflags() {
Johann's avatar
Johann committed
359
360
  log add_ldflags "$@"
  add_ldflags "$@"
John Koleszar's avatar
John Koleszar committed
361
362
}

Jan Kratochvil's avatar
Jan Kratochvil committed
363
check_asm_align() {
Johann's avatar
Johann committed
364
365
  log check_asm_align "$@"
  cat >${TMP_ASM} <<EOF
Jan Kratochvil's avatar
Jan Kratochvil committed
366
367
368
section .rodata
align 16
EOF
Johann's avatar
Johann committed
369
370
371
372
373
374
375
  log_file ${TMP_ASM}
  check_cmd ${AS} ${ASFLAGS} -o ${TMP_O} ${TMP_ASM}
  readelf -WS ${TMP_O} >${TMP_X}
  log_file ${TMP_X}
  if ! grep -q '\.rodata .* 16$' ${TMP_X}; then
    die "${AS} ${ASFLAGS} does not support section alignment (nasm <=2.08?)"
  fi
Jan Kratochvil's avatar
Jan Kratochvil committed
376
377
}

378
379
# tests for -m$1 toggling the feature given in $2. If $2 is empty $1 is used.
check_gcc_machine_option() {
Johann's avatar
Johann committed
380
381
382
383
384
385
386
387
388
  opt="$1"
  feature="$2"
  [ -n "$feature" ] || feature="$opt"

  if enabled gcc && ! disabled "$feature" && ! check_cflags "-m$opt"; then
    RTCD_OPTIONS="${RTCD_OPTIONS}--disable-$feature "
  else
    soft_enable "$feature"
  fi
389
390
}

John Koleszar's avatar
John Koleszar committed
391
write_common_config_banner() {
Johann's avatar
Johann committed
392
393
394
  print_webm_license config.mk "##" ""
  echo '# This file automatically generated by configure. Do not edit!' >> config.mk
  echo "TOOLCHAIN := ${toolchain}" >> config.mk
John Koleszar's avatar
John Koleszar committed
395

Johann's avatar
Johann committed
396
397
398
399
400
  case ${toolchain} in
    *-linux-rvct)
      echo "ALT_LIBC := ${alt_libc}" >> config.mk
      ;;
  esac
John Koleszar's avatar
John Koleszar committed
401
402
403
}

write_common_config_targets() {
Johann's avatar
Johann committed
404
405
  for t in ${all_targets}; do
    if enabled ${t}; then
406
      if enabled child; then
Johann's avatar
Johann committed
407
408
409
410
411
        fwrite config.mk "ALL_TARGETS += ${t}-${toolchain}"
      else
        fwrite config.mk "ALL_TARGETS += ${t}"
      fi
    fi
John Koleszar's avatar
John Koleszar committed
412
    true;
Johann's avatar
Johann committed
413
414
  done
  true
John Koleszar's avatar
John Koleszar committed
415
416
417
}

write_common_target_config_mk() {
Johann's avatar
Johann committed
418
419
420
421
422
  saved_CC="${CC}"
  saved_CXX="${CXX}"
  enabled ccache && CC="ccache ${CC}"
  enabled ccache && CXX="ccache ${CXX}"
  print_webm_license $1 "##" ""
John Koleszar's avatar
John Koleszar committed
423

Johann's avatar
Johann committed
424
  cat >> $1 << EOF
John Koleszar's avatar
John Koleszar committed
425
426
427
428
429
430
# This file automatically generated by configure. Do not edit!
SRC_PATH="$source_path"
SRC_PATH_BARE=$source_path
BUILD_PFX=${BUILD_PFX}
TOOLCHAIN=${toolchain}
ASM_CONVERSION=${asm_conversion_cmd:-${source_path}/build/make/ads2gas.pl}
431
GEN_VCPROJ=${gen_vcproj_cmd}
432
MSVS_ARCH_DIR=${msvs_arch_dir}
John Koleszar's avatar
John Koleszar committed
433
434

CC=${CC}
John Koleszar's avatar
John Koleszar committed
435
CXX=${CXX}
John Koleszar's avatar
John Koleszar committed
436
437
438
439
440
441
AR=${AR}
LD=${LD}
AS=${AS}
STRIP=${STRIP}
NM=${NM}

442
CFLAGS  = ${CFLAGS}
John Koleszar's avatar
John Koleszar committed
443
CXXFLAGS  = ${CXXFLAGS}
444
ARFLAGS = -crs\$(if \$(quiet),,v)
John Koleszar's avatar
John Koleszar committed
445
446
447
448
LDFLAGS = ${LDFLAGS}
ASFLAGS = ${ASFLAGS}
extralibs = ${extralibs}
AS_SFX    = ${AS_SFX:-.asm}
John Koleszar's avatar
John Koleszar committed
449
EXE_SFX   = ${EXE_SFX}
450
VCPROJ_SFX = ${VCPROJ_SFX}
451
RTCD_OPTIONS = ${RTCD_OPTIONS}
John Koleszar's avatar
John Koleszar committed
452
453
EOF

Johann's avatar
Johann committed
454
  if enabled rvct; then cat >> $1 << EOF
455
fmt_deps = sed -e 's;^__image.axf;\${@:.d=.o} \$@;' #hide
John Koleszar's avatar
John Koleszar committed
456
EOF
Johann's avatar
Johann committed
457
  else cat >> $1 << EOF
458
fmt_deps = sed -e 's;^\([a-zA-Z0-9_]*\)\.o;\${@:.d=.o} \$@;'
John Koleszar's avatar
John Koleszar committed
459
EOF
Johann's avatar
Johann committed
460
  fi
John Koleszar's avatar
John Koleszar committed
461

Johann's avatar
Johann committed
462
463
464
465
  print_config_mk ARCH   "${1}" ${ARCH_LIST}
  print_config_mk HAVE   "${1}" ${HAVE_LIST}
  print_config_mk CONFIG "${1}" ${CONFIG_LIST}
  print_config_mk HAVE   "${1}" gnu_strip
John Koleszar's avatar
John Koleszar committed
466

Johann's avatar
Johann committed
467
  enabled msvs && echo "CONFIG_VS_VERSION=${vs_version}" >> "${1}"
John Koleszar's avatar
John Koleszar committed
468

Johann's avatar
Johann committed
469
470
  CC="${saved_CC}"
  CXX="${saved_CXX}"
John Koleszar's avatar
John Koleszar committed
471
472
473
}

write_common_target_config_h() {
Johann's avatar
Johann committed
474
475
  print_webm_license ${TMP_H} "/*" " */"
  cat >> ${TMP_H} << EOF
John Koleszar's avatar
John Koleszar committed
476
/* This file automatically generated by configure. Do not edit! */
Adrian Grange's avatar
Adrian Grange committed
477
478
#ifndef AOM_CONFIG_H
#define AOM_CONFIG_H
John Koleszar's avatar
John Koleszar committed
479
#define RESTRICT    ${RESTRICT}
480
#define INLINE      ${INLINE}
John Koleszar's avatar
John Koleszar committed
481
EOF
Johann's avatar
Johann committed
482
483
484
485
  print_config_h ARCH   "${TMP_H}" ${ARCH_LIST}
  print_config_h HAVE   "${TMP_H}" ${HAVE_LIST}
  print_config_h CONFIG "${TMP_H}" ${CONFIG_LIST}
  print_config_vars_h   "${TMP_H}" ${VAR_LIST}
Adrian Grange's avatar
Adrian Grange committed
486
  echo "#endif /* AOM_CONFIG_H */" >> ${TMP_H}
Johann's avatar
Johann committed
487
488
  mkdir -p `dirname "$1"`
  cmp "$1" ${TMP_H} >/dev/null 2>&1 || mv ${TMP_H} "$1"
John Koleszar's avatar
John Koleszar committed
489
490
491
}

process_common_cmdline() {
Johann's avatar
Johann committed
492
493
494
495
496
  for opt in "$@"; do
    optval="${opt#*=}"
    case "$opt" in
      --child)
        enable_feature child
John Koleszar's avatar
John Koleszar committed
497
        ;;
Johann's avatar
Johann committed
498
      --log*)
John Koleszar's avatar
John Koleszar committed
499
500
        logging="$optval"
        if ! disabled logging ; then
Johann's avatar
Johann committed
501
          enabled logging || logfile="$logging"
John Koleszar's avatar
John Koleszar committed
502
        else
Johann's avatar
Johann committed
503
          logfile=/dev/null
John Koleszar's avatar
John Koleszar committed
504
505
        fi
        ;;
Johann's avatar
Johann committed
506
507
      --target=*)
        toolchain="${toolchain:-${optval}}"
John Koleszar's avatar
John Koleszar committed
508
        ;;
Johann's avatar
Johann committed
509
510
511
      --force-target=*)
        toolchain="${toolchain:-${optval}}"
        enable_feature force_toolchain
John Koleszar's avatar
John Koleszar committed
512
        ;;
Johann's avatar
Johann committed
513
514
      --cpu=*)
        tune_cpu="$optval"
John Koleszar's avatar
John Koleszar committed
515
        ;;
Johann's avatar
Johann committed
516
      --extra-cflags=*)
Attila Nagy's avatar
Attila Nagy committed
517
518
        extra_cflags="${optval}"
        ;;
519
520
521
      --extra-cxxflags=*)
        extra_cxxflags="${optval}"
        ;;
Johann's avatar
Johann committed
522
      --enable-?*|--disable-?*)
John Koleszar's avatar
John Koleszar committed
523
        eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
524
        if echo "${ARCH_EXT_LIST}" | grep "^ *$option\$" >/dev/null; then
Johann's avatar
Johann committed
525
          [ $action = "disable" ] && RTCD_OPTIONS="${RTCD_OPTIONS}--disable-${option} "
John Koleszar's avatar
John Koleszar committed
526
527
528
        elif [ $action = "disable" ] && ! disabled $option ; then
          echo "${CMDLINE_SELECT}" | grep "^ *$option\$" >/dev/null ||
            die_unknown $opt
529
          log_echo "  disabling $option"
John Koleszar's avatar
John Koleszar committed
530
531
532
        elif [ $action = "enable" ] && ! enabled $option ; then
          echo "${CMDLINE_SELECT}" | grep "^ *$option\$" >/dev/null ||
            die_unknown $opt
533
          log_echo "  enabling $option"
534
        fi
James Zern's avatar
James Zern committed
535
        ${action}_feature $option
536
        ;;
Johann's avatar
Johann committed
537
      --require-?*)
538
539
540
541
542
543
        eval `echo "$opt" | sed 's/--/action=/;s/-/ option=/;s/-/_/g'`
        if echo "${ARCH_EXT_LIST}" none | grep "^ *$option\$" >/dev/null; then
            RTCD_OPTIONS="${RTCD_OPTIONS}${opt} "
        else
            die_unknown $opt
        fi
John Koleszar's avatar
John Koleszar committed
544
        ;;
Johann's avatar
Johann committed
545
      --force-enable-?*|--force-disable-?*)
John Koleszar's avatar
John Koleszar committed
546
        eval `echo "$opt" | sed 's/--force-/action=/;s/-/ option=/;s/-/_/g'`
James Zern's avatar
James Zern committed
547
        ${action}_feature $option
John Koleszar's avatar
John Koleszar committed
548
        ;;
Johann's avatar
Johann committed
549
      --libc=*)
John Koleszar's avatar
John Koleszar committed
550
        [ -d "${optval}" ] || die "Not a directory: ${optval}"
551
        disable_feature builtin_libc
John Koleszar's avatar
John Koleszar committed
552
553
        alt_libc="${optval}"
        ;;
Johann's avatar
Johann committed
554
      --as=*)
555
        [ "${optval}" = yasm ] || [ "${optval}" = nasm ] \
Johann's avatar
Johann committed
556
557
          || [ "${optval}" = auto ] \
          || die "Must be yasm, nasm or auto: ${optval}"
Jan Kratochvil's avatar
Jan Kratochvil committed
558
559
        alt_as="${optval}"
        ;;
Johann's avatar
Johann committed
560
      --size-limit=*)
561
562
563
        w="${optval%%x*}"
        h="${optval##*x}"
        VAR_LIST="DECODE_WIDTH_LIMIT ${w} DECODE_HEIGHT_LIMIT ${h}"
564
565
        [ ${w} -gt 0 ] && [ ${h} -gt 0 ] || die "Invalid size-limit: too small."
        [ ${w} -lt 65536 ] && [ ${h} -lt 65536 ] \
566
567
568
            || die "Invalid size-limit: too big."
        enable_feature size_limit
        ;;
Johann's avatar
Johann committed
569
      --prefix=*)
570
571
        prefix="${optval}"
        ;;
Johann's avatar
Johann committed
572
      --libdir=*)
573
574
        libdir="${optval}"
        ;;
Johann's avatar
Johann committed
575
      --sdk-path=*)
John Koleszar's avatar
John Koleszar committed
576
577
578
        [ -d "${optval}" ] || die "Not a directory: ${optval}"
        sdk_path="${optval}"
        ;;
Johann's avatar
Johann committed
579
      --libc|--as|--prefix|--libdir|--sdk-path)
John Koleszar's avatar
John Koleszar committed
580
581
        die "Option ${opt} requires argument"
        ;;
Johann's avatar
Johann committed
582
583
      --help|-h)
        show_help
John Koleszar's avatar
John Koleszar committed
584
        ;;
Johann's avatar
Johann committed
585
586
      *)
        die_unknown $opt
John Koleszar's avatar
John Koleszar committed
587
        ;;
Johann's avatar
Johann committed
588
589
    esac
  done
John Koleszar's avatar
John Koleszar committed
590
591
592
}

process_cmdline() {
Johann's avatar
Johann committed
593
594
595
596
597
  for opt do
    optval="${opt#*=}"
    case "$opt" in
      *)
        process_common_cmdline $opt
John Koleszar's avatar
John Koleszar committed
598
        ;;
Johann's avatar
Johann committed
599
600
    esac
  done
John Koleszar's avatar
John Koleszar committed
601
602
}

603
post_process_common_cmdline() {
Johann's avatar
Johann committed
604
605
606
607
608
609
610
  prefix="${prefix:-/usr/local}"
  prefix="${prefix%/}"
  libdir="${libdir:-${prefix}/lib}"
  libdir="${libdir%/}"
  if [ "${libdir#${prefix}}" = "${libdir}" ]; then
    die "Libdir ${libdir} must be a subdirectory of ${prefix}"
  fi
611
612
}

John Koleszar's avatar
John Koleszar committed
613
post_process_cmdline() {
Johann's avatar
Johann committed
614
  true;
John Koleszar's avatar
John Koleszar committed
615
616
617
}

setup_gnu_toolchain() {
Johann's avatar
Johann committed
618
619
620
621
622
623
624
625
626
  CC=${CC:-${CROSS}gcc}
  CXX=${CXX:-${CROSS}g++}
  AR=${AR:-${CROSS}ar}
  LD=${LD:-${CROSS}${link_with_cc:-ld}}
  AS=${AS:-${CROSS}as}
  STRIP=${STRIP:-${CROSS}strip}
  NM=${NM:-${CROSS}nm}
  AS_SFX=.s
  EXE_SFX=
John Koleszar's avatar
John Koleszar committed
627
628
}

629
630
631
632
633
634
635
# Reliably find the newest available Darwin SDKs. (Older versions of
# xcrun don't support --show-sdk-path.)
show_darwin_sdk_path() {
  xcrun --sdk $1 --show-sdk-path 2>/dev/null ||
    xcodebuild -sdk $1 -version Path 2>/dev/null
}

636
637
638
639
640
# Print the major version number of the Darwin SDK specified by $1.
show_darwin_sdk_major_version() {
  xcrun --sdk $1 --show-sdk-version 2>/dev/null | cut -d. -f1
}

John Koleszar's avatar
John Koleszar committed
641
process_common_toolchain() {
Johann's avatar
Johann committed
642
643
  if [ -z "$toolchain" ]; then
    gcctarget="${CHOST:-$(gcc -dumpmachine 2> /dev/null)}"
644

Johann's avatar
Johann committed
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
    # detect tgt_isa
    case "$gcctarget" in
      armv6*)
        tgt_isa=armv6
        ;;
      armv7*-hardfloat*)
        tgt_isa=armv7
        float_abi=hard
        ;;
      armv7*)
        tgt_isa=armv7
        float_abi=softfp
        ;;
      *x86_64*|*amd64*)
        tgt_isa=x86_64
        ;;
      *i[3456]86*)
        tgt_isa=x86
        ;;
      *sparc*)
        tgt_isa=sparc
        ;;
    esac
John Koleszar's avatar
John Koleszar committed
668

Johann's avatar
Johann committed
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
    # detect tgt_os
    case "$gcctarget" in
      *darwin10*)
        tgt_isa=x86_64
        tgt_os=darwin10
        ;;
      *darwin11*)
        tgt_isa=x86_64
        tgt_os=darwin11
        ;;
      *darwin12*)
        tgt_isa=x86_64
        tgt_os=darwin12
        ;;
      *darwin13*)
        tgt_isa=x86_64
        tgt_os=darwin13
        ;;
687
688
689
690
      *darwin14*)
        tgt_isa=x86_64
        tgt_os=darwin14
        ;;
691
692
693
694
      *darwin15*)
        tgt_isa=x86_64
        tgt_os=darwin15
        ;;
Johann's avatar
Johann committed
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
      x86_64*mingw32*)
        tgt_os=win64
        ;;
      *mingw32*|*cygwin*)
        [ -z "$tgt_isa" ] && tgt_isa=x86
        tgt_os=win32
        ;;
      *linux*|*bsd*)
        tgt_os=linux
        ;;
      *solaris2.10)
        tgt_os=solaris
        ;;
      *os2*)
        tgt_os=os2
        ;;
    esac
John Koleszar's avatar
John Koleszar committed
712

Johann's avatar
Johann committed
713
714
715
716
    if [ -n "$tgt_isa" ] && [ -n "$tgt_os" ]; then
      toolchain=${tgt_isa}-${tgt_os}-gcc
    fi
  fi
John Koleszar's avatar
John Koleszar committed
717

Johann's avatar
Johann committed
718
  toolchain=${toolchain:-generic-gnu}
John Koleszar's avatar
John Koleszar committed
719

Johann's avatar
Johann committed
720
721
  is_in ${toolchain} ${all_platforms} || enabled force_toolchain \
    || die "Unrecognized toolchain '${toolchain}'"
John Koleszar's avatar
John Koleszar committed
722

Johann's avatar
Johann committed
723
  enabled child || log_echo "Configuring for target '${toolchain}'"
John Koleszar's avatar
John Koleszar committed
724

Johann's avatar
Johann committed
725
726
727
728
729
730
  #
  # Set up toolchain variables
  #
  tgt_isa=$(echo ${toolchain} | awk 'BEGIN{FS="-"}{print $1}')
  tgt_os=$(echo ${toolchain} | awk 'BEGIN{FS="-"}{print $2}')
  tgt_cc=$(echo ${toolchain} | awk 'BEGIN{FS="-"}{print $3}')
731

Johann's avatar
Johann committed
732
733
734
735
  # Mark the specific ISA requested as enabled
  soft_enable ${tgt_isa}
  enable_feature ${tgt_os}
  enable_feature ${tgt_cc}
736

Johann's avatar
Johann committed
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
  # Enable the architecture family
  case ${tgt_isa} in
    arm*)
      enable_feature arm
      ;;
    mips*)
      enable_feature mips
      ;;
  esac

  # PIC is probably what we want when building shared libs
  enabled shared && soft_enable pic

  # Minimum iOS version for all target platforms (darwin and iphonesimulator).
  IOS_VERSION_MIN="6.0"

  # Handle darwin variants. Newer SDKs allow targeting older
754
  # platforms, so use the newest one available.
Johann's avatar
Johann committed
755
  case ${toolchain} in
756
    arm*-darwin*)
757
      add_cflags "-miphoneos-version-min=${IOS_VERSION_MIN}"
758
759
760
761
762
763
764
      iphoneos_sdk_dir="$(show_darwin_sdk_path iphoneos)"
      if [ -d "${iphoneos_sdk_dir}" ]; then
        add_cflags  "-isysroot ${iphoneos_sdk_dir}"
        add_ldflags "-isysroot ${iphoneos_sdk_dir}"
      fi
      ;;
    x86*-darwin*)
765
766
767
768
      osx_sdk_dir="$(show_darwin_sdk_path macosx)"
      if [ -d "${osx_sdk_dir}" ]; then
        add_cflags  "-isysroot ${osx_sdk_dir}"
        add_ldflags "-isysroot ${osx_sdk_dir}"
Johann's avatar
Johann committed
769
770
771
      fi
      ;;
  esac
John Koleszar's avatar
John Koleszar committed
772

Johann's avatar
Johann committed
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
  case ${toolchain} in
    *-darwin8-*)
      add_cflags  "-mmacosx-version-min=10.4"
      add_ldflags "-mmacosx-version-min=10.4"
      ;;
    *-darwin9-*)
      add_cflags  "-mmacosx-version-min=10.5"
      add_ldflags "-mmacosx-version-min=10.5"
      ;;
    *-darwin10-*)
      add_cflags  "-mmacosx-version-min=10.6"
      add_ldflags "-mmacosx-version-min=10.6"
      ;;
    *-darwin11-*)
      add_cflags  "-mmacosx-version-min=10.7"
      add_ldflags "-mmacosx-version-min=10.7"
      ;;
    *-darwin12-*)
      add_cflags  "-mmacosx-version-min=10.8"
      add_ldflags "-mmacosx-version-min=10.8"
      ;;
    *-darwin13-*)
      add_cflags  "-mmacosx-version-min=10.9"
      add_ldflags "-mmacosx-version-min=10.9"
      ;;
798
799
800
801
    *-darwin14-*)
      add_cflags  "-mmacosx-version-min=10.10"
      add_ldflags "-mmacosx-version-min=10.10"
      ;;
802
803
804
805
    *-darwin15-*)
      add_cflags  "-mmacosx-version-min=10.11"
      add_ldflags "-mmacosx-version-min=10.11"
      ;;
Johann's avatar
Johann committed
806
807
808
    *-iphonesimulator-*)
      add_cflags  "-miphoneos-version-min=${IOS_VERSION_MIN}"
      add_ldflags "-miphoneos-version-min=${IOS_VERSION_MIN}"
809
810
811
812
813
      iossim_sdk_dir="$(show_darwin_sdk_path iphonesimulator)"
      if [ -d "${iossim_sdk_dir}" ]; then
        add_cflags  "-isysroot ${iossim_sdk_dir}"
        add_ldflags "-isysroot ${iossim_sdk_dir}"
      fi
Johann's avatar
Johann committed
814
815
      ;;
  esac
John Koleszar's avatar
John Koleszar committed
816

Johann's avatar
Johann committed
817
818
819
820
821
822
823
824
825
  # Handle Solaris variants. Solaris 10 needs -lposix4
  case ${toolchain} in
    sparc-solaris-*)
      add_extralibs -lposix4
      ;;
    *-solaris-*)
      add_extralibs -lposix4
      ;;
  esac
826

Johann's avatar
Johann committed
827
828
  # Process ARM architecture variants
  case ${toolchain} in
John Koleszar's avatar
John Koleszar committed
829
    arm*)
Johann's avatar
Johann committed
830
831
      # on arm, isa versions are supersets
      case ${tgt_isa} in
Tom Finegan's avatar
Tom Finegan committed
832
        arm64|armv8)
Johann's avatar
Johann committed
833
834
          soft_enable neon
          ;;
Tom Finegan's avatar
Tom Finegan committed
835
        armv7|armv7s)
Johann's avatar
Johann committed
836
          soft_enable neon
837
838
839
840
841
842
          # Only enable neon_asm when neon is also enabled.
          enabled neon && soft_enable neon_asm
          # If someone tries to force it through, die.
          if disabled neon && enabled neon_asm; then
            die "Disabling neon while keeping neon-asm is not supported"
          fi
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
          case ${toolchain} in
            # Apple iOS SDKs no longer support armv6 as of the version 9
            # release (coincides with release of Xcode 7). Only enable media
            # when using earlier SDK releases.
            *-darwin*)
              if [ "$(show_darwin_sdk_major_version iphoneos)" -lt 9 ]; then
                soft_enable media
              else
                soft_disable media
                RTCD_OPTIONS="${RTCD_OPTIONS}--disable-media "
              fi
              ;;
            *)
              soft_enable media
              ;;
          esac
Johann's avatar
Johann committed
859
          ;;
John Koleszar's avatar
John Koleszar committed
860
        armv6)
861
862
863
864
865
866
867
868
869
870
871
872
          case ${toolchain} in
            *-darwin*)
              if [ "$(show_darwin_sdk_major_version iphoneos)" -lt 9 ]; then
                soft_enable media
              else
                die "Your iOS SDK does not support armv6."
              fi
              ;;
            *)
              soft_enable media
              ;;
          esac
Johann's avatar
Johann committed
873
874
          ;;
      esac
John Koleszar's avatar
John Koleszar committed
875

Johann's avatar
Johann committed
876
      asm_conversion_cmd="cat"
John Koleszar's avatar
John Koleszar committed
877

Johann's avatar
Johann committed
878
      case ${tgt_cc} in
John Koleszar's avatar
John Koleszar committed
879
        gcc)
Johann's avatar
Johann committed
880
881
882
883
884
885
886
887
888
889
          CROSS=${CROSS:-arm-none-linux-gnueabi-}
          link_with_cc=gcc
          setup_gnu_toolchain
          arch_int=${tgt_isa##armv}
          arch_int=${arch_int%%te}
          check_add_asflags --defsym ARCHITECTURE=${arch_int}
          tune_cflags="-mtune="
          if [ ${tgt_isa} = "armv7" ] || [ ${tgt_isa} = "armv7s" ]; then
            if [ -z "${float_abi}" ]; then
              check_cpp <<EOF && float_abi=hard || float_abi=softfp
890
891
892
893
#ifndef __ARM_PCS_VFP
#error "not hardfp"
#endif
EOF
John Koleszar's avatar
John Koleszar committed
894
            fi
Johann's avatar
Johann committed
895
896
            check_add_cflags  -march=armv7-a -mfloat-abi=${float_abi}
            check_add_asflags -march=armv7-a -mfloat-abi=${float_abi}
John Koleszar's avatar
John Koleszar committed
897

Johann's avatar
Johann committed
898
899
900
            if enabled neon || enabled neon_asm; then
              check_add_cflags -mfpu=neon #-ftree-vectorize
              check_add_asflags -mfpu=neon
901
            fi
Johann's avatar
Johann committed
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
          else
            check_add_cflags -march=${tgt_isa}
            check_add_asflags -march=${tgt_isa}
          fi

          enabled debug && add_asflags -g
          asm_conversion_cmd="${source_path}/build/make/ads2gas.pl"
          if enabled thumb; then
            asm_conversion_cmd="$asm_conversion_cmd -thumb"
            check_add_cflags -mthumb
            check_add_asflags -mthumb -mimplicit-it=always
          fi
          ;;
        vs*)
          asm_conversion_cmd="${source_path}/build/make/ads2armasm_ms.pl"
          AS_SFX=.s
          msvs_arch_dir=arm-msvs
          disable_feature multithread
          disable_feature unit_tests
          vs_version=${tgt_cc##vs}
          if [ $vs_version -ge 12 ]; then
            # MSVC 2013 doesn't allow doing plain .exe projects for ARM,
            # only "AppContainerApplication" which requires an AppxManifest.
            # Therefore disable the examples, just build the library.
            disable_feature examples
          fi
          ;;
John Koleszar's avatar
John Koleszar committed
929
        rvct)
Johann's avatar
Johann committed
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
          CC=armcc
          AR=armar
          AS=armasm
          LD="${source_path}/build/make/armlink_adapter.sh"
          STRIP=arm-none-linux-gnueabi-strip
          NM=arm-none-linux-gnueabi-nm
          tune_cflags="--cpu="
          tune_asflags="--cpu="
          if [ -z "${tune_cpu}" ]; then
            if [ ${tgt_isa} = "armv7" ]; then
              if enabled neon || enabled neon_asm
              then
                check_add_cflags --fpu=softvfp+vfpv3
                check_add_asflags --fpu=softvfp+vfpv3
              fi
              check_add_cflags --cpu=Cortex-A8
              check_add_asflags --cpu=Cortex-A8
            else
              check_add_cflags --cpu=${tgt_isa##armv}
              check_add_asflags --cpu=${tgt_isa##armv}
John Koleszar's avatar
John Koleszar committed
950
            fi
Johann's avatar
Johann committed
951
952
953
954
955
956
957
958
959
960
          fi
          arch_int=${tgt_isa##armv}
          arch_int=${arch_int%%te}
          check_add_asflags --pd "\"ARCHITECTURE SETA ${arch_int}\""
          enabled debug && add_asflags -g
          add_cflags --gnu
          add_cflags --enum_is_int
          add_cflags --wchar32
          ;;
      esac
John Koleszar's avatar
John Koleszar committed
961

Johann's avatar
Johann committed
962
      case ${tgt_os} in
963
        none*)
Johann's avatar
Johann committed
964
965
966
          disable_feature multithread
          disable_feature os_support
          ;;
John Koleszar's avatar
John Koleszar committed
967
968

        android*)
Johann's avatar
Johann committed
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
          SDK_PATH=${sdk_path}
          COMPILER_LOCATION=`find "${SDK_PATH}" \
                             -name "arm-linux-androideabi-gcc*" -print -quit`
          TOOLCHAIN_PATH=${COMPILER_LOCATION%/*}/arm-linux-androideabi-
          CC=${TOOLCHAIN_PATH}gcc
          CXX=${TOOLCHAIN_PATH}g++
          AR=${TOOLCHAIN_PATH}ar
          LD=${TOOLCHAIN_PATH}gcc
          AS=${TOOLCHAIN_PATH}as
          STRIP=${TOOLCHAIN_PATH}strip
          NM=${TOOLCHAIN_PATH}nm

          if [ -z "${alt_libc}" ]; then
            alt_libc=`find "${SDK_PATH}" -name arch-arm -print | \
              awk '{n = split($0,a,"/"); \
                split(a[n-1],b,"-"); \
                print $0 " " b[2]}' | \
                sort -g -k 2 | \
                awk '{ print $1 }' | tail -1`
          fi

990
991
992
993
          if [ -d "${alt_libc}" ]; then
            add_cflags "--sysroot=${alt_libc}"
            add_ldflags "--sysroot=${alt_libc}"
          fi
Johann's avatar
Johann committed
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006

          # linker flag that routes around a CPU bug in some
          # Cortex-A8 implementations (NDK Dev Guide)
          add_ldflags "-Wl,--fix-cortex-a8"

          enable_feature pic
          soft_enable realtime_only
          if [ ${tgt_isa} = "armv7" ]; then
            soft_enable runtime_cpu_detect
          fi
          if enabled runtime_cpu_detect; then
            add_cflags "-I${SDK_PATH}/sources/android/cpufeatures"
          fi
John Koleszar's avatar
John Koleszar committed
1007
1008
          ;;

John Koleszar's avatar
John Koleszar committed
1009
        darwin*)
1010
          XCRUN_FIND="xcrun --sdk iphoneos --find"
Johann's avatar
Johann committed
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
          CXX="$(${XCRUN_FIND} clang++)"
          CC="$(${XCRUN_FIND} clang)"
          AR="$(${XCRUN_FIND} ar)"
          AS="$(${XCRUN_FIND} as)"
          STRIP="$(${XCRUN_FIND} strip)"
          NM="$(${XCRUN_FIND} nm)"
          RANLIB="$(${XCRUN_FIND} ranlib)"
          AS_SFX=.s

          # Special handling of ld for armv6 because libclang_rt.ios.a does
          # not contain armv6 support in Apple's clang package:
          #   Apple LLVM version 5.1 (clang-503.0.40) (based on LLVM 3.4svn).
          # TODO(tomfinegan): Remove this. Our minimum iOS version (6.0)
          # renders support for armv6 unnecessary because the 3GS and up
          # support neon.
          if [ "${tgt_isa}" = "armv6" ]; then
            LD="$(${XCRUN_FIND} ld)"
          else
            LD="${CXX:-$(${XCRUN_FIND} ld)}"
          fi

          # ASFLAGS is written here instead of using check_add_asflags
          # because we need to overwrite all of ASFLAGS and purge the
          # options that were put in above
          ASFLAGS="-arch ${tgt_isa} -g"

1037
          add_cflags -arch ${tgt_isa}
Johann's avatar
Johann committed
1038
1039
          add_ldflags -arch ${tgt_isa}

1040
1041
1042
1043
1044
          alt_libc="$(show_darwin_sdk_path iphoneos)"
          if [ -d "${alt_libc}" ]; then
            add_cflags -isysroot ${alt_libc}
          fi

Johann's avatar
Johann committed
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
          if [ "${LD}" = "${CXX}" ]; then
            add_ldflags -miphoneos-version-min="${IOS_VERSION_MIN}"
          else
            add_ldflags -ios_version_min "${IOS_VERSION_MIN}"
          fi

          for d in lib usr/lib usr/lib/system; do
            try_dir="${alt_libc}/${d}"
            [ -d "${try_dir}" ] && add_ldflags -L"${try_dir}"
          done

          asm_conversion_cmd="${source_path}/build/make/ads2gas_apple.pl"
1057
1058
1059
1060
1061
1062

          if [ "$(show_darwin_sdk_major_version iphoneos)" -gt 8 ]; then
            check_add_cflags -fembed-bitcode
            check_add_asflags -fembed-bitcode
            check_add_ldflags -fembed-bitcode
          fi
Johann's avatar
Johann committed
1063
          ;;
John Koleszar's avatar
John Koleszar committed
1064
1065

        linux*)
Johann's avatar
Johann committed
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
          enable_feature linux
          if enabled rvct; then
            # Check if we have CodeSourcery GCC in PATH. Needed for
            # libraries
            hash arm-none-linux-gnueabi-gcc 2>&- || \
              die "Couldn't find CodeSourcery GCC from PATH"

            # Use armcc as a linker to enable translation of
            # some gcc specific options such as -lm and -lpthread.
            LD="armcc --translate_gcc"

            # create configuration file (uses path to CodeSourcery GCC)
            armcc --arm_linux_configure --arm_linux_config_file=arm_linux.cfg

            add_cflags --arm_linux_paths --arm_linux_config_file=arm_linux.cfg
            add_asflags --no_hide_all --apcs=/interwork
            add_ldflags --arm_linux_paths --arm_linux_config_file=arm_linux.cfg
            enabled pic && add_cflags --apcs=/fpic
            enabled pic && add_asflags --apcs=/fpic
            enabled shared && add_cflags --shared
          fi
          ;;
      esac
      ;;
John Koleszar's avatar
John Koleszar committed
1090
    mips*)
Johann's avatar
Johann committed
1091
1092
1093
1094
1095
1096
      link_with_cc=gcc
      setup_gnu_toolchain
      tune_cflags="-mtune="
      if enabled dspr2; then
        check_add_cflags -mips32r2 -mdspr2
      fi
1097

Parag Salasakar's avatar
Parag Salasakar committed
1098
1099
1100
1101
      if enabled runtime_cpu_detect; then
        disable_feature runtime_cpu_detect
      fi

1102
1103
1104
      if [ -n "${tune_cpu}" ]; then
        case ${tune_cpu} in
          p5600)
Parag Salasakar's avatar
Parag Salasakar committed
1105
1106
1107
1108
            check_add_cflags -mips32r5 -funroll-loops -mload-store-pairs
            check_add_cflags -msched-weight -mhard-float -mfp64
            check_add_asflags -mips32r5 -mhard-float -mfp64
            check_add_ldflags -mfp64
1109
1110
            ;;
          i6400)
Parag Salasakar's avatar
Parag Salasakar committed
1111
1112
1113
1114
            check_add_cflags -mips64r6 -mabi=64 -funroll-loops -msched-weight 
            check_add_cflags  -mload-store-pairs -mhard-float -mfp64
            check_add_asflags -mips64r6 -mabi=64 -mhard-float -mfp64
            check_add_ldflags -mips64r6 -mabi=64 -mfp64
1115
1116
1117
1118
            ;;
        esac

        if enabled msa; then
Parag Salasakar's avatar
Parag Salasakar committed
1119
1120
1121
          add_cflags -mmsa
          add_asflags -mmsa
          add_ldflags -mmsa
1122
1123
1124
        fi
      fi

Johann's avatar
Johann committed
1125
1126
1127
1128
      check_add_cflags -march=${tgt_isa}
      check_add_asflags -march=${tgt_isa}
      check_add_asflags -KPIC
      ;;
John Koleszar's avatar
John Koleszar committed
1129
    x86*)
Johann's avatar
Johann committed
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
      case  ${tgt_os} in
        win*)
          enabled gcc && add_cflags -fno-common
          ;;
        solaris*)
          CC=${CC:-${CROSS}gcc}
          CXX=${CXX:-${CROSS}g++}
          LD=${LD:-${CROSS}gcc}
          CROSS=${CROSS:-g}
          ;;
        os2)
KO Myung-Hun's avatar
KO Myung-Hun committed
1141
          disable_feature pic
Johann's avatar
Johann committed
1142
          AS=${AS:-nasm}
1143
          add_ldflags -Zhigh-mem
Johann's avatar
Johann committed
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
          ;;
      esac

      AS="${alt_as:-${AS:-auto}}"
      case  ${tgt_cc} in
        icc*)
          CC=${CC:-icc}
          LD=${LD:-icc}
          setup_gnu_toolchain
          add_cflags -use-msasm  # remove -use-msasm too?
          # add -no-intel-extensions to suppress warning #10237
          # refer to http://software.intel.com/en-us/forums/topic/280199
          add_ldflags -i-static -no-intel-extensions
          enabled x86_64 && add_cflags -ipo -static -O3 -no-prec-div
          enabled x86_64 && AR=xiar
          case ${tune_cpu} in
            atom*)
              tune_cflags="-x"
              tune_cpu="SSE3_ATOM"
              ;;
            *)
              tune_cflags="-march="
              ;;
          esac
          ;;
        gcc*)
          link_with_cc=gcc
          tune_cflags="-march="
          setup_gnu_toolchain
          #for 32 bit x86 builds, -O3 did not turn on this flag
          enabled optimizations && disabled gprof && check_add_cflags -fomit-frame-pointer
          ;;
        vs*)
          # When building with Microsoft Visual Studio the assembler is
          # invoked directly. Checking at configure time is unnecessary.
          # Skip the check by setting AS arbitrarily
          AS=msvs
          msvs_arch_dir=x86-msvs
          vc_version=${tgt_cc##vs}
          case $vc_version in
            7|8|9|10)
              echo "${tgt_cc} does not support avx/avx2, disabling....."
              RTCD_OPTIONS="${RTCD_OPTIONS}--disable-avx --disable-avx2 "
              soft_disable avx
              soft_disable avx2
              ;;
          esac
          ;;
      esac

      bits=32
      enabled x86_64 && bits=64
      check_cpp <<EOF && bits=x32
1197
#if !defined(__ILP32__) || !defined(__x86_64__)
1198
1199
1200
#error "not x32"
#endif
EOF
Johann's avatar
Johann committed
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
      case ${tgt_cc} in
        gcc*)
          add_cflags -m${bits}
          add_ldflags -m${bits}
          ;;
      esac

      soft_enable runtime_cpu_detect
      # We can't use 'check_cflags' until the compiler is configured and CC is
      # populated.
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
      for ext in ${ARCH_EXT_LIST_X86}; do
        # disable higher order extensions to simplify asm dependencies
        if [ "$disable_exts" = "yes" ]; then
          if ! disabled $ext; then
            RTCD_OPTIONS="${RTCD_OPTIONS}--disable-${ext} "
            disable_feature $ext
          fi
        elif disabled $ext; then
          disable_exts="yes"
        else
          # use the shortened version for the flag: sse4_1 -> sse4
          check_gcc_machine_option ${ext%_*} $ext
        fi
      done
Johann's avatar
Johann committed
1225

1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
      if enabled external_build; then
        log_echo "  skipping assembler detection"
      else
        case "${AS}" in
          auto|"")
            which nasm >/dev/null 2>&1 && AS=nasm
            which yasm >/dev/null 2>&1 && AS=yasm
            if [ "${AS}" = nasm ] ; then
              # Apple ships version 0.98 of nasm through at least Xcode 6. Revisit
              # this check if they start shipping a compatible version.
              apple=`nasm -v | grep "Apple"`
              [ -n "${apple}" ] \
                && echo "Unsupported version of nasm: ${apple}" \
                && AS=""
            fi
            [ "${AS}" = auto ] || [ -z "${AS}" ] \
              && die "Neither yasm nor nasm have been found." \
                     "See the prerequisites section in the README for more info."
            ;;
        esac
        log_echo "  using $AS"
      fi
Johann's avatar
Johann committed
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
      [ "${AS##*/}" = nasm ] && add_asflags -Ox
      AS_SFX=.asm
      case  ${tgt_os} in
        win32)
          add_asflags -f win32
          enabled debug && add_asflags -g cv8
          EXE_SFX=.exe
          ;;
        win64)
          add_asflags -f x64
          enabled debug && add_asflags -g cv8
          EXE_SFX=.exe
          ;;
        linux*|solaris*|android*)
          add_asflags -f elf${bits}
          enabled debug && [ "${AS}" = yasm ] && add_asflags -g dwarf2
          enabled debug && [ "${AS}" = nasm ] && add_asflags -g
          [ "${AS##*/}" = nasm ] && check_asm_align
          ;;
        darwin*)
          add_asflags -f macho${bits}
          enabled x86 && darwin_arch="-arch i386" || darwin_arch="-arch x86_64"
          add_cflags  ${darwin_arch}
          add_ldflags ${darwin_arch}
          # -mdynamic-no-pic is still a bit of voodoo -- it was required at
          # one time, but does not seem to be now, and it breaks some of the
          # code that still relies on inline assembly.
          # enabled icc && ! enabled pic && add_cflags -fno-pic -mdynamic-no-pic
          enabled icc && ! enabled pic && add_cflags -fno-pic
          ;;
        iphonesimulator)
          add_asflags -f macho${bits}
          enabled x86 && sim_arch="-arch i386" || sim_arch="-arch x86_64"
          add_cflags  ${sim_arch}
          add_ldflags ${sim_arch}
1283
1284
1285
1286
1287
1288
1289

          if [ "$(show_darwin_sdk_major_version iphonesimulator)" -gt 8 ]; then
            # yasm v1.3.0 doesn't know what -fembed-bitcode means, so turning it
            # on is pointless (unless building a C-only lib). Warn the user, but
            # do nothing here.
            log "Warning: Bitcode embed disabled for simulator targets."
          fi
Johann's avatar
Johann committed
1290
1291
1292
1293
1294
1295
1296
1297
1298
1299
1300
          ;;
        os2)
          add_asflags -f aout
          enabled debug && add_asflags -g
          EXE_SFX=.exe
          ;;
        *)
          log "Warning: Unknown os $tgt_os while setting up $AS flags"
          ;;
      esac
      ;;
1301
    *-gcc|generic-gnu)
Johann's avatar
Johann committed
1302
1303
1304
1305
1306
      link_with_cc=gcc
      enable_feature gcc
      setup_gnu_toolchain
      ;;
  esac
John Koleszar's avatar
John Koleszar committed
1307

Johann's avatar
Johann committed
1308
1309
1310
1311
1312
1313
  # Try to enable CPU specific tuning
  if [ -n "${tune_cpu}" ]; then
    if [ -n "${tune_cflags}" ]; then
      check_add_cflags ${tune_cflags}${tune_cpu} || \
        die "Requested CPU '${tune_cpu}' not supported by compiler"
    fi
John Koleszar's avatar
John Koleszar committed
1314
    if [ -n "${tune_asflags}" ]; then
Johann's avatar
Johann committed
1315
1316
1317
      check_add_asflags ${tune_asflags}${tune_cpu} || \
        die "Requested CPU '${tune_cpu}' not supported by assembler"
    fi
John Koleszar's avatar
John Koleszar committed
1318
    if [ -z "${tune_cflags}${tune_asflags}" ]; then
Johann's avatar
Johann committed
1319
      log_echo "Warning: CPU tuning not supported by this toolchain"
John Koleszar's avatar
John Koleszar committed
1320
    fi
Johann's avatar
Johann committed
1321
1322
1323
1324
1325
1326
1327
1328
1329
1330
1331
1332
1333
1334
1335
1336
  fi

  if enabled debug; then
    check_add_cflags -g && check_add_ldflags -g
  else
    check_add_cflags -DNDEBUG
  fi

  enabled gprof && check_add_cflags -pg && check_add_ldflags -pg
  enabled gcov &&
    check_add_cflags -fprofile-arcs -ftest-coverage &&
    check_add_ldflags -fprofile-arcs -ftest-coverage

  if enabled optimizations; then
    if enabled rvct; then
      enabled small && check_add_cflags -Ospace || check_add_cflags -Otime
1337
    else
Johann's avatar
Johann committed
1338
      enabled small && check_add_cflags -O2 ||  check_add_cflags -O3
John Koleszar's avatar
John Koleszar committed
1339
    fi
Johann's avatar
Johann committed
1340
1341
  fi

1342
  if [ "${tgt_isa}" = "x86_64" ] || [ "${tgt_isa}" = "x86" ]; then
Johann's avatar
Johann committed
1343
1344
1345
1346
1347
1348
1349
1350
1351
1352
1353
1354
1355
1356
1357
1358
1359
    soft_enable use_x86inc
  fi

  # Position Independent Code (PIC) support, for building relocatable
  # shared objects
  enabled gcc && enabled pic && check_add_cflags -fPIC

  # Work around longjmp interception on glibc >= 2.11, to improve binary
  # compatibility. See http://code.google.com/p/webm/issues/detail?id=166
  enabled linux && check_add_cflags -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=0

  # Check for strip utility variant
  ${STRIP} -V 2>/dev/null | grep GNU >/dev/null && enable_feature gnu_strip

  # Try to determine target endianness
  check_cc <<EOF
unsigned int e = 'O'<<24 | '2'<<16 | 'B'<<8 | 'E';
John Koleszar's avatar
John Koleszar committed
1360
1361
EOF
    [ -f "${TMP_O}" ] && od -A n -t x1 "${TMP_O}" | tr -d '\n' |
1362
        grep '4f *32 *42 *45' >/dev/null 2>&1 && enable_feature big_endian
John Koleszar's avatar
John Koleszar committed
1363

1364
1365
    # Try to find which inline keywords are supported
    check_cc <<EOF && INLINE="inline"
Johann's avatar
Johann committed
1366
static inline function() {}
1367
1368
EOF

Johann's avatar
Johann committed
1369
1370
  # Almost every platform uses pthreads.
  if enabled multithread; then
John Koleszar's avatar
John Koleszar committed
1371
    case ${toolchain} in
Johann's avatar
Johann committed
1372
1373
1374
1375
1376
1377
      *-win*-vs*)
        ;;
      *-android-gcc)
        ;;
      *)
        check_header pthread.h && add_extralibs -lpthread
John Koleszar's avatar
John Koleszar committed
1378
1379
        ;;
    esac
Johann's avatar
Johann committed
1380
  fi
John Koleszar's avatar
John Koleszar committed
1381

Johann's avatar
Johann committed
1382
1383
1384
  # only for MIPS platforms
  case ${toolchain} in
    mips*)
Parag Salasakar's avatar
Parag Salasakar committed
1385
1386
      if enabled big_endian; then
        if enabled dspr2; then
Johann's avatar
Johann committed
1387
1388
1389
          echo "dspr2 optimizations are available only for little endian platforms"
          disable_feature dspr2
        fi
Parag Salasakar's avatar
Parag Salasakar committed
1390
1391
1392
1393
        if enabled msa; then
          echo "msa optimizations are available only for little endian platforms"
          disable_feature msa
        fi
Johann's avatar