| 1 | #!/bin/awk -f
|
|---|
| 2 |
|
|---|
| 3 | # scripts/options.awk - library build configuration control
|
|---|
| 4 | #
|
|---|
| 5 | # Copyright (c) 1998-2014 Glenn Randers-Pehrson
|
|---|
| 6 | #
|
|---|
| 7 | # This code is released under the libpng license.
|
|---|
| 8 | # For conditions of distribution and use, see the disclaimer
|
|---|
| 9 | # and license in png.h
|
|---|
| 10 |
|
|---|
| 11 | # The output of this script is written to the file given by
|
|---|
| 12 | # the variable 'out'. The script is run twice, once with
|
|---|
| 13 | # an intermediate output file, 'options.tmp' then again on
|
|---|
| 14 | # that file to produce the final output:
|
|---|
| 15 | #
|
|---|
| 16 | # awk -f scripts/options.awk out=options.tmp scripts/options.dfa 1>&2
|
|---|
| 17 | # awk -f scripts/options.awk out=options.dfn options.tmp 1>&2
|
|---|
| 18 | #
|
|---|
| 19 | # Some options may be specified on the command line:
|
|---|
| 20 | #
|
|---|
| 21 | # deb=1 Causes debugging to be output
|
|---|
| 22 | # logunsupported=1 Causes all options to be recorded in the output
|
|---|
| 23 | # everything=off Causes all options to be disabled by default
|
|---|
| 24 | # everything=on Causes all options to be enabled by default
|
|---|
| 25 | #
|
|---|
| 26 | # If awk fails on your platform, try nawk instead.
|
|---|
| 27 | #
|
|---|
| 28 | # These options may also be specified in the original input file (and
|
|---|
| 29 | # are copied to the preprocessed file).
|
|---|
| 30 |
|
|---|
| 31 | BEGIN{
|
|---|
| 32 | out="" # intermediate, preprocessed, file
|
|---|
| 33 | pre=-1 # preprocess (first line)
|
|---|
| 34 | version="libpng version unknown" # version information
|
|---|
| 35 | version_file="" # where to find the version
|
|---|
| 36 | err=0 # in-line exit sets this
|
|---|
| 37 | # The following definitions prevent the C preprocessor noticing the lines
|
|---|
| 38 | # that will be in the final output file. Some C preprocessors tokenise
|
|---|
| 39 | # the lines, for example by inserting spaces around operators, and all
|
|---|
| 40 | # C preprocessors notice lines that start with '#', most remove comments.
|
|---|
| 41 | # The technique adopted here is to make the final output lines into
|
|---|
| 42 | # C strings (enclosed in double quotes), preceded by PNG_DFN. As a
|
|---|
| 43 | # consequence the output cannot contain a 'raw' double quote - instead put
|
|---|
| 44 | # @' in, this will be replaced by a single " afterward. See the parser
|
|---|
| 45 | # script dfn.awk for more capabilities (not required here). Note that if
|
|---|
| 46 | # you need a " in a 'setting' in pnglibconf.dfa it must also be @'!
|
|---|
| 47 | dq="@'" # For a single double quote
|
|---|
| 48 | start=" PNG_DFN \"" # Start stuff to output (can't contain a "!)
|
|---|
| 49 | end="\" " # End stuff to output
|
|---|
| 50 | subs="@\" " # Substitute start (substitute a C macro)
|
|---|
| 51 | sube=" \"@" # Substitute end
|
|---|
| 52 | comment=start "/*" # Comment start
|
|---|
| 53 | cend="*/" end # Comment end
|
|---|
| 54 | def=start "#define PNG_" # Arbitrary define
|
|---|
| 55 | sup="_SUPPORTED" end # end supported option
|
|---|
| 56 | und=comment "#undef PNG_" # Unsupported option
|
|---|
| 57 | une="_SUPPORTED" cend # end unsupported option
|
|---|
| 58 | error=start "ERROR:" # error message, terminate with 'end'
|
|---|
| 59 |
|
|---|
| 60 | # Variables
|
|---|
| 61 | deb=0 # debug - set on command line
|
|---|
| 62 | everything="" # do not override defaults
|
|---|
| 63 | logunsupported=0 # write unsupported options too
|
|---|
| 64 |
|
|---|
| 65 | # Precreate arrays
|
|---|
| 66 | # for each option:
|
|---|
| 67 | option[""] = "" # list of all options: default enabled/disabled
|
|---|
| 68 | done[""] = 1 # marks option as having been output
|
|---|
| 69 | requires[""] = "" # requires by option
|
|---|
| 70 | iffs[""] = "" # if by option
|
|---|
| 71 | enabledby[""] = "" # options that enable it by option
|
|---|
| 72 | sets[""] = "" # settings set by each option
|
|---|
| 73 | setval[""] = "" # value to set (indexed: 'option sets[option]')
|
|---|
| 74 | # for each setting:
|
|---|
| 75 | setting[""] = "" # requires by setting
|
|---|
| 76 | defaults[""] = "" # used for a defaulted value
|
|---|
| 77 | doneset[""] = 1 # marks setting as having been output
|
|---|
| 78 | r[""] = "" # Temporary array
|
|---|
| 79 |
|
|---|
| 80 | # For decorating the output file
|
|---|
| 81 | protect = ""
|
|---|
| 82 | }
|
|---|
| 83 |
|
|---|
| 84 | # The output file must be specified before any input:
|
|---|
| 85 | out == "" {
|
|---|
| 86 | print "out=output.file must be given on the command line"
|
|---|
| 87 | err = 1
|
|---|
| 88 | exit 1
|
|---|
| 89 | }
|
|---|
| 90 |
|
|---|
| 91 | # The very first line indicates whether we are reading pre-processed
|
|---|
| 92 | # input or not, this must come *first* because 'PREPROCESSED' needs
|
|---|
| 93 | # to be the very first line in the temporary file.
|
|---|
| 94 | pre == -1{
|
|---|
| 95 | if ($0 == "PREPROCESSED") {
|
|---|
| 96 | pre = 0
|
|---|
| 97 | next
|
|---|
| 98 | } else {
|
|---|
| 99 | pre = 1
|
|---|
| 100 | print "PREPROCESSED" >out
|
|---|
| 101 | # And fall through to continue processing
|
|---|
| 102 | }
|
|---|
| 103 | }
|
|---|
| 104 |
|
|---|
| 105 | # While pre-processing if version is set to "search" look for a version string
|
|---|
| 106 | # in the following file.
|
|---|
| 107 | pre && version == "search" && version_file == ""{
|
|---|
| 108 | version_file = FILENAME
|
|---|
| 109 | }
|
|---|
| 110 |
|
|---|
| 111 | pre && version == "search" && version_file != FILENAME{
|
|---|
| 112 | print "version string not found in", version_file
|
|---|
| 113 | err = 1
|
|---|
| 114 | exit 1
|
|---|
| 115 | }
|
|---|
| 116 |
|
|---|
| 117 | pre && version == "search" && $0 ~ /^ \* libpng version/{
|
|---|
| 118 | version = substr($0, 4)
|
|---|
| 119 | print "version =", version >out
|
|---|
| 120 | next
|
|---|
| 121 | }
|
|---|
| 122 |
|
|---|
| 123 | pre && FILENAME == version_file{
|
|---|
| 124 | next
|
|---|
| 125 | }
|
|---|
| 126 |
|
|---|
| 127 | # variable=value
|
|---|
| 128 | # Sets the given variable to the given value (the syntax is fairly
|
|---|
| 129 | # free form, except for deb (you are expected to understand how to
|
|---|
| 130 | # set the debug variable...)
|
|---|
| 131 | #
|
|---|
| 132 | # This happens before the check on 'pre' below skips most of the
|
|---|
| 133 | # rest of the actions, so the variable settings happen during
|
|---|
| 134 | # preprocessing but are recorded in the END action too. This
|
|---|
| 135 | # allows them to be set on the command line too.
|
|---|
| 136 | $0 ~ /^[ ]*version[ ]*=/{
|
|---|
| 137 | sub(/^[ ]*version[ ]*=[ ]*/, "")
|
|---|
| 138 | version = $0
|
|---|
| 139 | next
|
|---|
| 140 | }
|
|---|
| 141 | $0 ~ /^[ ]*everything[ =]*off[ ]*$/{
|
|---|
| 142 | everything = "off"
|
|---|
| 143 | next
|
|---|
| 144 | }
|
|---|
| 145 | $0 ~ /^[ ]*everything[ =]*on[ ]*$/{
|
|---|
| 146 | everything = "on"
|
|---|
| 147 | next
|
|---|
| 148 | }
|
|---|
| 149 | $0 ~ /^[ ]*logunsupported[ =]*0[ ]*$/{
|
|---|
| 150 | logunsupported = 0
|
|---|
| 151 | next
|
|---|
| 152 | }
|
|---|
| 153 | $0 ~ /^[ ]*logunsupported[ =]*1[ ]*$/{
|
|---|
| 154 | logunsupported = 1
|
|---|
| 155 | next
|
|---|
| 156 | }
|
|---|
| 157 | $1 == "deb" && $2 == "=" && NF == 3{
|
|---|
| 158 | deb = $3
|
|---|
| 159 | next
|
|---|
| 160 | }
|
|---|
| 161 |
|
|---|
| 162 | # Preprocessing - this just copies the input file with lines
|
|---|
| 163 | # that need preprocessing (just chunk at present) expanded
|
|---|
| 164 | # The bare "pre" instead of "pre != 0" crashes under Sunos awk
|
|---|
| 165 | pre && $1 != "chunk"{
|
|---|
| 166 | print >out
|
|---|
| 167 | next
|
|---|
| 168 | }
|
|---|
| 169 |
|
|---|
| 170 | # The first characters of the line determine how it is processed,
|
|---|
| 171 | # leading spaces are ignored. In general tokens that are not
|
|---|
| 172 | # keywords are the names of options. An option 'name' is
|
|---|
| 173 | # controlled by the definition of the corresponding macros:
|
|---|
| 174 | #
|
|---|
| 175 | # PNG_name_SUPPORTED The option is turned on
|
|---|
| 176 | # PNG_NO_name
|
|---|
| 177 | # PNG_NO_name_SUPPORTED If the first macro is not defined
|
|---|
| 178 | # either of these will turn the option off
|
|---|
| 179 | #
|
|---|
| 180 | # If none of these macros are defined the option is turned on, unless
|
|---|
| 181 | # the keyword 'off' is given in a line relating to the option. The
|
|---|
| 182 | # keyword 'on' can also be given, but it will be ignored (since it is
|
|---|
| 183 | # the default.)
|
|---|
| 184 | #
|
|---|
| 185 | # In the syntax below a 'name' is indicated by "NAME", other macro
|
|---|
| 186 | # values are indicated by "MACRO", as with "NAME" the leading "PNG_"
|
|---|
| 187 | # is omitted, but in this case the "NO_" prefix and the "_SUPPORTED"
|
|---|
| 188 | # suffix are never used.
|
|---|
| 189 | #
|
|---|
| 190 | # Each line is introduced by a keyword - the first non-space characters
|
|---|
| 191 | # on the line. A line starting with a '#' is a comment - it is totally
|
|---|
| 192 | # ignored. Keywords are as follows, a NAME, is simply a macro name
|
|---|
| 193 | # without the leading PNG_, PNG_NO_ or the trailing _SUPPORTED.
|
|---|
| 194 |
|
|---|
| 195 | $1 ~ /^#/ || $0 ~ /^[ ]*$/{
|
|---|
| 196 | next
|
|---|
| 197 | }
|
|---|
| 198 |
|
|---|
| 199 | # com <comment>
|
|---|
| 200 | # The whole line is placed in the output file as a comment with
|
|---|
| 201 | # the preceding 'com' removed
|
|---|
| 202 | $1 == "com"{
|
|---|
| 203 | if (NF > 1) {
|
|---|
| 204 | # sub(/^[ ]*com[ ]*/, "")
|
|---|
| 205 | $1 = ""
|
|---|
| 206 | print comment $0, cend >out
|
|---|
| 207 | } else
|
|---|
| 208 | print start end >out
|
|---|
| 209 | next
|
|---|
| 210 | }
|
|---|
| 211 |
|
|---|
| 212 | # version
|
|---|
| 213 | # Inserts a version comment
|
|---|
| 214 | $1 == "version" && NF == 1{
|
|---|
| 215 | if (version == "") {
|
|---|
| 216 | print "ERROR: no version string set"
|
|---|
| 217 | err = 1 # prevent END{} running
|
|---|
| 218 | exit 1
|
|---|
| 219 | }
|
|---|
| 220 |
|
|---|
| 221 | print comment, version, cend >out
|
|---|
| 222 | next
|
|---|
| 223 | }
|
|---|
| 224 |
|
|---|
| 225 | # file output input protect
|
|---|
| 226 | # Informational: the official name of the input file (without
|
|---|
| 227 | # make generated local directories), the official name of the
|
|---|
| 228 | # output file and, if required, a name to use in a protection
|
|---|
| 229 | # macro for the contents.
|
|---|
| 230 | $1 == "file" && NF >= 2{
|
|---|
| 231 | print comment, $2, cend >out
|
|---|
| 232 | print comment, "Machine generated file: DO NOT EDIT", cend >out
|
|---|
| 233 | if (NF >= 3)
|
|---|
| 234 | print comment, "Derived from:", $3, cend >out
|
|---|
| 235 | protect = $4
|
|---|
| 236 | if (protect != "") {
|
|---|
| 237 | print start "#ifndef", protect end >out
|
|---|
| 238 | print start "#define", protect end >out
|
|---|
| 239 | }
|
|---|
| 240 | next
|
|---|
| 241 | }
|
|---|
| 242 |
|
|---|
| 243 | # option NAME ( (requires|enables|if) NAME* | on | off | disabled |
|
|---|
| 244 | # sets SETTING VALUE+ )*
|
|---|
| 245 | #
|
|---|
| 246 | # Declares an option 'NAME' and describes its default setting (disabled)
|
|---|
| 247 | # and its relationship to other options. The option is disabled
|
|---|
| 248 | # unless *all* the options listed after 'requires' are set and at
|
|---|
| 249 | # least one of the options listed after 'if' is set. If the
|
|---|
| 250 | # option is set then it turns on all the options listed after 'enables'.
|
|---|
| 251 | #
|
|---|
| 252 | # Note that "enables" takes priority over the required/if/disabled/off
|
|---|
| 253 | # setting of the target option.
|
|---|
| 254 | #
|
|---|
| 255 | # The definition file may list an option as 'disabled': off by default,
|
|---|
| 256 | # otherwise the option is enabled: on by default. A later (and it must
|
|---|
| 257 | # be later) entry may turn an option on or off explicitly.
|
|---|
| 258 |
|
|---|
| 259 | $1 == "option" && NF >= 2{
|
|---|
| 260 | opt = $2
|
|---|
| 261 | sub(/,$/,"",opt)
|
|---|
| 262 | onoff = option[opt] # records current (and the default is "", enabled)
|
|---|
| 263 | key = ""
|
|---|
| 264 | istart = 3
|
|---|
| 265 | do {
|
|---|
| 266 | if (istart == 1) { # continuation line
|
|---|
| 267 | val = getline
|
|---|
| 268 |
|
|---|
| 269 | if (val != 1) { # error reading it
|
|---|
| 270 | if (val == 0)
|
|---|
| 271 | print "option", opt ": ERROR: missing continuation line"
|
|---|
| 272 | else
|
|---|
| 273 | print "option", opt ": ERROR: error reading continuation line"
|
|---|
| 274 |
|
|---|
| 275 | # This is a hard error
|
|---|
| 276 | err = 1 # prevent END{} running
|
|---|
| 277 | exit 1
|
|---|
| 278 | }
|
|---|
| 279 | }
|
|---|
| 280 |
|
|---|
| 281 | for (i=istart; i<=NF; ++i) {
|
|---|
| 282 | val=$(i)
|
|---|
| 283 | sub(/,$/,"",val)
|
|---|
| 284 | if (val == "on" || val == "off" || val == "disabled" || val =="enabled") {
|
|---|
| 285 | key = ""
|
|---|
| 286 | if (onoff != val) {
|
|---|
| 287 | # on or off can zap disabled or enabled:
|
|---|
| 288 | if (onoff == "" || (onoff == "disabled" || onoff == "enabled") &&
|
|---|
| 289 | (val == "on" || val == "off")) {
|
|---|
| 290 | # It's easy to mis-spell the option when turning it
|
|---|
| 291 | # on or off, so warn about it here:
|
|---|
| 292 | if (onoff == "" && (val == "on" || val == "off")) {
|
|---|
| 293 | print "option", opt ": ERROR: turning unrecognized option", val
|
|---|
| 294 | # For the moment error out - it is safer
|
|---|
| 295 | err = 1 # prevent END{} running
|
|---|
| 296 | exit 1
|
|---|
| 297 | }
|
|---|
| 298 | onoff = val
|
|---|
| 299 | } else {
|
|---|
| 300 | # Print a message, otherwise the error
|
|---|
| 301 | # below is incomprehensible
|
|---|
| 302 | print "option", opt ": currently", onoff ": attempt to turn", val
|
|---|
| 303 | break
|
|---|
| 304 | }
|
|---|
| 305 | }
|
|---|
| 306 | } else if (val == "requires" || val == "if" || val == "enables" || val =="sets") {
|
|---|
| 307 | key = val
|
|---|
| 308 | } else if (key == "requires") {
|
|---|
| 309 | requires[opt] = requires[opt] " " val
|
|---|
| 310 | } else if (key == "if") {
|
|---|
| 311 | iffs[opt] = iffs[opt] " " val
|
|---|
| 312 | } else if (key == "enables") {
|
|---|
| 313 | enabledby[val] = enabledby[val] " " opt
|
|---|
| 314 | } else if (key == "sets") {
|
|---|
| 315 | sets[opt] = sets[opt] " " val
|
|---|
| 316 | key = "setval"
|
|---|
| 317 | set = val
|
|---|
| 318 | } else if (key == "setval") {
|
|---|
| 319 | setval[opt " " set] = setval[opt " " set] " " val
|
|---|
| 320 | } else
|
|---|
| 321 | break # bad line format
|
|---|
| 322 | }
|
|---|
| 323 |
|
|---|
| 324 | istart = 1
|
|---|
| 325 | } while (i > NF && $0 ~ /,$/)
|
|---|
| 326 |
|
|---|
| 327 | if (i > NF) {
|
|---|
| 328 | # Set the option, defaulting to 'enabled'
|
|---|
| 329 | if (onoff == "") onoff = "enabled"
|
|---|
| 330 | option[opt] = onoff
|
|---|
| 331 | next
|
|---|
| 332 | }
|
|---|
| 333 | # Else fall through to the error handler
|
|---|
| 334 | }
|
|---|
| 335 |
|
|---|
| 336 | # chunk NAME [requires OPT] [enables LIST] [on|off|disabled]
|
|---|
| 337 | # Expands to the 'option' settings appropriate to the reading and
|
|---|
| 338 | # writing of an ancillary PNG chunk 'NAME':
|
|---|
| 339 | #
|
|---|
| 340 | # option READ_NAME requires READ_ANCILLARY_CHUNKS [READ_OPT]
|
|---|
| 341 | # option READ_NAME enables NAME LIST
|
|---|
| 342 | # [option READ_NAME off]
|
|---|
| 343 | # option WRITE_NAME requires WRITE_ANCILLARY_CHUNKS [WRITE_OPT]
|
|---|
| 344 | # option WRITE_NAME enables NAME LIST
|
|---|
| 345 | # [option WRITE_NAME off]
|
|---|
| 346 |
|
|---|
| 347 | pre != 0 && $1 == "chunk" && NF >= 2{
|
|---|
| 348 | # 'chunk' is handled on the first pass by writing appropriate
|
|---|
| 349 | # 'option' lines into the intermediate file.
|
|---|
| 350 | opt = $2
|
|---|
| 351 | sub(/,$/,"",opt)
|
|---|
| 352 | onoff = ""
|
|---|
| 353 | reqread = ""
|
|---|
| 354 | reqwrite = ""
|
|---|
| 355 | enables = ""
|
|---|
| 356 | req = 0
|
|---|
| 357 | istart = 3
|
|---|
| 358 | do {
|
|---|
| 359 | if (istart == 1) { # continuation line
|
|---|
| 360 | val = getline
|
|---|
| 361 |
|
|---|
| 362 | if (val != 1) { # error reading it
|
|---|
| 363 | if (val == 0)
|
|---|
| 364 | print "chunk", opt ": ERROR: missing continuation line"
|
|---|
| 365 | else
|
|---|
| 366 | print "chunk", opt ": ERROR: error reading continuation line"
|
|---|
| 367 |
|
|---|
| 368 | # This is a hard error
|
|---|
| 369 | err = 1 # prevent END{} running
|
|---|
| 370 | exit 1
|
|---|
| 371 | }
|
|---|
| 372 | }
|
|---|
| 373 |
|
|---|
| 374 | # read the keywords/additional OPTS
|
|---|
| 375 | for (i=istart; i<=NF; ++i) {
|
|---|
| 376 | val = $(i)
|
|---|
| 377 | sub(/,$/,"",val)
|
|---|
| 378 | if (val == "on" || val == "off" || val == "disabled") {
|
|---|
| 379 | if (onoff != val) {
|
|---|
| 380 | if (onoff == "")
|
|---|
| 381 | onoff = val
|
|---|
| 382 | else
|
|---|
| 383 | break # on/off conflict
|
|---|
| 384 | }
|
|---|
| 385 | req = 0
|
|---|
| 386 | } else if (val == "requires")
|
|---|
| 387 | req = 1
|
|---|
| 388 | else if (val == "enables")
|
|---|
| 389 | req = 2
|
|---|
| 390 | else if (req == 1){
|
|---|
| 391 | reqread = reqread " READ_" val
|
|---|
| 392 | reqwrite = reqwrite " WRITE_" val
|
|---|
| 393 | } else if (req == 2)
|
|---|
| 394 | enables = enables " " val
|
|---|
| 395 | else
|
|---|
| 396 | break # bad line: handled below
|
|---|
| 397 | }
|
|---|
| 398 |
|
|---|
| 399 | istart = 1
|
|---|
| 400 | } while (i > NF && $0 ~ /,$/)
|
|---|
| 401 |
|
|---|
| 402 | if (i > NF) {
|
|---|
| 403 | # Output new 'option' lines to the intermediate file (out)
|
|---|
| 404 | print "option READ_" opt, "requires READ_ANCILLARY_CHUNKS" reqread, "enables", opt enables , onoff >out
|
|---|
| 405 | print "option WRITE_" opt, "requires WRITE_ANCILLARY_CHUNKS" reqwrite, "enables", opt enables, onoff >out
|
|---|
| 406 | next
|
|---|
| 407 | }
|
|---|
| 408 | # Else hit the error handler below - bad line format!
|
|---|
| 409 | }
|
|---|
| 410 |
|
|---|
| 411 | # setting MACRO ( requires MACRO* )* [ default VALUE ]
|
|---|
| 412 | # Behaves in a similar way to 'option' without looking for NO_ or
|
|---|
| 413 | # _SUPPORTED; the macro is enabled if it is defined so long as all
|
|---|
| 414 | # the 'requires' macros are also defined. The definitions may be
|
|---|
| 415 | # empty, an error will be issued if the 'requires' macros are
|
|---|
| 416 | # *not* defined. If given the 'default' value is used if the
|
|---|
| 417 | # macro is not defined. The default value will be re-tokenised.
|
|---|
| 418 | # (BTW: this is somewhat restrictive, it mainly exists for the
|
|---|
| 419 | # support of non-standard configurations and numeric parameters,
|
|---|
| 420 | # see the uses in scripts/options.dat
|
|---|
| 421 |
|
|---|
| 422 | $1 == "setting" && (NF == 2 || NF >= 3 && ($3 == "requires" || $3 == "default")){
|
|---|
| 423 | reqs = ""
|
|---|
| 424 | deflt = ""
|
|---|
| 425 | isdef = 0
|
|---|
| 426 | key = ""
|
|---|
| 427 | for (i=3; i<=NF; ++i)
|
|---|
| 428 | if ($(i) == "requires" || $(i) == "default") {
|
|---|
| 429 | key = $(i)
|
|---|
| 430 | if (key == "default") isdef = 1
|
|---|
| 431 | } else if (key == "requires")
|
|---|
| 432 | reqs = reqs " " $(i)
|
|---|
| 433 | else if (key == "default")
|
|---|
| 434 | deflt = deflt " " $(i)
|
|---|
| 435 | else
|
|---|
| 436 | break # Format error, handled below
|
|---|
| 437 |
|
|---|
| 438 | setting[$2] = reqs
|
|---|
| 439 | # NOTE: this overwrites a previous value silently
|
|---|
| 440 | if (isdef && deflt == "")
|
|---|
| 441 | deflt = " " # as a flag to force output
|
|---|
| 442 | defaults[$2] = deflt
|
|---|
| 443 | next
|
|---|
| 444 | }
|
|---|
| 445 |
|
|---|
| 446 | # The order of the dependency lines (option, chunk, setting) is irrelevant
|
|---|
| 447 | # - the 'enables', 'requires' and 'if' settings will be used to determine
|
|---|
| 448 | # the correct order in the output and the final values in pnglibconf.h are
|
|---|
| 449 | # not order dependent. 'requires' and 'if' entries take precedence over
|
|---|
| 450 | # 'enables' from other options; if an option requires another option it
|
|---|
| 451 | # won't be set regardless of any options that enable it unless the other
|
|---|
| 452 | # option is also enabled.
|
|---|
| 453 | #
|
|---|
| 454 | # Similarly 'enables' trumps a NO_ definition in CFLAGS or pngusr.h
|
|---|
| 455 | #
|
|---|
| 456 | # For simplicity cycles in the definitions are regarded as errors,
|
|---|
| 457 | # even if they are not ambiguous.
|
|---|
| 458 | # A given NAME can be specified in as many 'option' lines as required, the
|
|---|
| 459 | # definitions are additive.
|
|---|
| 460 |
|
|---|
| 461 | # For backwards compatibility equivalent macros may be listed thus:
|
|---|
| 462 | #
|
|---|
| 463 | # = [NO_]NAME MACRO
|
|---|
| 464 | # Makes -DMACRO equivalent to -DPNG_NO_NAME or -DPNG_NAME_SUPPORTED
|
|---|
| 465 | # as appropriate.
|
|---|
| 466 | #
|
|---|
| 467 | # The definition is injected into the C compiler input when encountered
|
|---|
| 468 | # in the second pass (so all these definitions appear *after* the @
|
|---|
| 469 | # lines!)
|
|---|
| 470 | #
|
|---|
| 471 | # 'NAME' is as above, but 'MACRO' is the full text of the equivalent
|
|---|
| 472 | # old, deprecated, macro.
|
|---|
| 473 |
|
|---|
| 474 | $1 == "=" && NF == 3{
|
|---|
| 475 | print "#ifdef PNG_" $3 >out
|
|---|
| 476 | if ($2 ~ /^NO_/)
|
|---|
| 477 | print "# define PNG_" $2 >out
|
|---|
| 478 | else
|
|---|
| 479 | print "# define PNG_" $2 "_SUPPORTED" >out
|
|---|
| 480 | print "#endif" >out
|
|---|
| 481 | next
|
|---|
| 482 | }
|
|---|
| 483 |
|
|---|
| 484 | # Lines may be injected into the C compiler input by preceding them
|
|---|
| 485 | # with an "@" character. The line is copied with just the leading
|
|---|
| 486 | # @ removed.
|
|---|
| 487 |
|
|---|
| 488 | $1 ~ /^@/{
|
|---|
| 489 | # sub(/^[ ]*@/, "")
|
|---|
| 490 | $1 = substr($1, 2)
|
|---|
| 491 | print >out
|
|---|
| 492 | next
|
|---|
| 493 | }
|
|---|
| 494 |
|
|---|
| 495 | # Check for unrecognized lines, because of the preprocessing chunk
|
|---|
| 496 | # format errors will be detected on the first pass independent of
|
|---|
| 497 | # any other format errors.
|
|---|
| 498 | {
|
|---|
| 499 | print "options.awk: bad line (" NR "):", $0
|
|---|
| 500 | err = 1 # prevent END{} running
|
|---|
| 501 | exit 1
|
|---|
| 502 | }
|
|---|
| 503 |
|
|---|
| 504 | # For checking purposes names that start with "ok_" or "fail_" are
|
|---|
| 505 | # not output to pnglibconf.h and must be either enabled or disabled
|
|---|
| 506 | # respectively for the build to succeed. This allows interdependencies
|
|---|
| 507 | # between options of the form "at least one of" or "at most one of"
|
|---|
| 508 | # to be checked. For example:
|
|---|
| 509 | #
|
|---|
| 510 | # option FLOATING_POINT enables ok_math
|
|---|
| 511 | # option FIXED_POINT enables ok_math
|
|---|
| 512 | # This ensures that at least one of FLOATING_POINT and FIXED_POINT
|
|---|
| 513 | # must be set for the build to succeed.
|
|---|
| 514 | #
|
|---|
| 515 | # option fail_math requires FLOATING_POINT FIXED_POINT
|
|---|
| 516 | # This means the build will fail if *both* FLOATING_POINT and
|
|---|
| 517 | # FIXED_POINT are set (this is an example; in fact both are allowed.)
|
|---|
| 518 | #
|
|---|
| 519 | # If all these options were given the build would require exactly one
|
|---|
| 520 | # of the names to be enabled.
|
|---|
| 521 |
|
|---|
| 522 | END{
|
|---|
| 523 | # END{} gets run on an exit (a traditional awk feature)
|
|---|
| 524 | if (err) exit 1
|
|---|
| 525 |
|
|---|
| 526 | if (pre) {
|
|---|
| 527 | # Record the final value of the variables
|
|---|
| 528 | print "deb =", deb >out
|
|---|
| 529 | if (everything != "") {
|
|---|
| 530 | print "everything =", everything >out
|
|---|
| 531 | }
|
|---|
| 532 | print "logunsupported =", logunsupported >out
|
|---|
| 533 | exit 0
|
|---|
| 534 | }
|
|---|
| 535 |
|
|---|
| 536 | # Do the options first (allowing options to set settings). The dependency
|
|---|
| 537 | # tree is thus:
|
|---|
| 538 | #
|
|---|
| 539 | # name > name
|
|---|
| 540 | # name requires name
|
|---|
| 541 | # name if name
|
|---|
| 542 | # name enabledby name
|
|---|
| 543 | #
|
|---|
| 544 | # First build a list 'tree' by option of all the things on which
|
|---|
| 545 | # it depends.
|
|---|
| 546 | print "" >out
|
|---|
| 547 | print "/* OPTIONS */" >out
|
|---|
| 548 | print comment, "options", cend >out
|
|---|
| 549 | for (opt in enabledby) tree[opt] = 1 # may not be explicit options
|
|---|
| 550 | for (opt in option) if (opt != "") {
|
|---|
| 551 | o = option[opt]
|
|---|
| 552 | # option should always be one of the following values
|
|---|
| 553 | if (o != "on" && o != "off" && o != "disabled" && o != "enabled") {
|
|---|
| 554 | print "internal option error (" o ")"
|
|---|
| 555 | exit 1
|
|---|
| 556 | }
|
|---|
| 557 | tree[opt] = "" # so unlisted options marked
|
|---|
| 558 | }
|
|---|
| 559 | for (opt in tree) if (opt != "") {
|
|---|
| 560 | if (tree[opt] == 1) {
|
|---|
| 561 | tree[opt] = ""
|
|---|
| 562 | if (option[opt] != "") {
|
|---|
| 563 | print "internal error (1)"
|
|---|
| 564 | exit 1
|
|---|
| 565 | }
|
|---|
| 566 | # Macros only listed in 'enables' remain off unless
|
|---|
| 567 | # one of the enabling macros is on.
|
|---|
| 568 | option[opt] = "disabled"
|
|---|
| 569 | }
|
|---|
| 570 |
|
|---|
| 571 | split("", list) # clear 'list'
|
|---|
| 572 | # Now add every requires, iffs or enabledby entry to 'list'
|
|---|
| 573 | # so that we can add a unique list of requirements to tree[i]
|
|---|
| 574 | split(requires[opt] iffs[opt] enabledby[opt], r)
|
|---|
| 575 | for (i in r) list[r[i]] = 1
|
|---|
| 576 | for (i in list) tree[opt] = tree[opt] " " i
|
|---|
| 577 | }
|
|---|
| 578 |
|
|---|
| 579 | # print the tree for extreme debugging
|
|---|
| 580 | if (deb > 2) for (i in tree) if (i != "") print i, "depends-on" tree[i]
|
|---|
| 581 |
|
|---|
| 582 | # Ok, now check all options marked explicitly 'on' or 'off':
|
|---|
| 583 | #
|
|---|
| 584 | # If an option[opt] is 'on' then turn on all requires[opt]
|
|---|
| 585 | # If an option[opt] is 'off' then turn off all enabledby[opt]
|
|---|
| 586 | #
|
|---|
| 587 | # Error out if we have to turn 'on' to an 'off' option or vice versa.
|
|---|
| 588 | npending = 0
|
|---|
| 589 | for (opt in option) if (opt != "") {
|
|---|
| 590 | if (option[opt] == "on" || option[opt] == "off") {
|
|---|
| 591 | pending[++npending] = opt
|
|---|
| 592 | }
|
|---|
| 593 | }
|
|---|
| 594 |
|
|---|
| 595 | err = 0 # set on error
|
|---|
| 596 | while (npending > 0) {
|
|---|
| 597 | opt = pending[npending--]
|
|---|
| 598 | if (option[opt] == "on") {
|
|---|
| 599 | nreqs = split(requires[opt], r)
|
|---|
| 600 | for (j=1; j<=nreqs; ++j) {
|
|---|
| 601 | if (option[r[j]] == "off") {
|
|---|
| 602 | print "option", opt, "turned on, but requirement", r[j], "is turned off"
|
|---|
| 603 | err = 1
|
|---|
| 604 | } else if (option[r[j]] != "on") {
|
|---|
| 605 | option[r[j]] = "on"
|
|---|
| 606 | pending[++npending] = r[j]
|
|---|
| 607 | }
|
|---|
| 608 | }
|
|---|
| 609 | } else {
|
|---|
| 610 | if (option[opt] != "off") {
|
|---|
| 611 | print "internal error (2)"
|
|---|
| 612 | exit 1
|
|---|
| 613 | }
|
|---|
| 614 | nreqs = split(enabledby[opt], r)
|
|---|
| 615 | for (j=1; j<=nreqs; ++j) {
|
|---|
| 616 | if (option[r[j]] == "on") {
|
|---|
| 617 | print "option", opt, "turned off, but enabled by", r[j], "which is turned on"
|
|---|
| 618 | err = 1
|
|---|
| 619 | } else if (option[r[j]] != "off") {
|
|---|
| 620 | option[r[j]] = "off"
|
|---|
| 621 | pending[++npending] = r[j]
|
|---|
| 622 | }
|
|---|
| 623 | }
|
|---|
| 624 | }
|
|---|
| 625 | }
|
|---|
| 626 | if (err) exit 1
|
|---|
| 627 |
|
|---|
| 628 | # Sort options:
|
|---|
| 629 | print "PNG_DFN_START_SORT 2" >out
|
|---|
| 630 |
|
|---|
| 631 | # option[i] is now the complete list of all the tokens we may
|
|---|
| 632 | # need to output, go through it as above, depth first.
|
|---|
| 633 | finished = 0
|
|---|
| 634 | while (!finished) {
|
|---|
| 635 | finished = 1
|
|---|
| 636 | movement = 0 # done nothing
|
|---|
| 637 | for (i in option) if (!done[i]) {
|
|---|
| 638 | nreqs = split(tree[i], r)
|
|---|
| 639 | if (nreqs > 0) {
|
|---|
| 640 | for (j=1; j<=nreqs; ++j) if (!done[r[j]]) {
|
|---|
| 641 | break
|
|---|
| 642 | }
|
|---|
| 643 | if (j<=nreqs) {
|
|---|
| 644 | finished = 0
|
|---|
| 645 | continue # next option
|
|---|
| 646 | }
|
|---|
| 647 | }
|
|---|
| 648 |
|
|---|
| 649 | # All the requirements have been processed, output
|
|---|
| 650 | # this option. An option is _SUPPORTED if:
|
|---|
| 651 | #
|
|---|
| 652 | # all 'requires' are _SUPPORTED AND
|
|---|
| 653 | # at least one of the 'if' options are _SUPPORTED AND
|
|---|
| 654 | # EITHER:
|
|---|
| 655 | # The name is _SUPPORTED (on the command line)
|
|---|
| 656 | # OR:
|
|---|
| 657 | # an 'enabledby' is _SUPPORTED
|
|---|
| 658 | # OR:
|
|---|
| 659 | # NO_name is not defined AND
|
|---|
| 660 | # the option is not disabled; an option is disabled if:
|
|---|
| 661 | # option == off
|
|---|
| 662 | # option == disabled && everything != on
|
|---|
| 663 | # option == "" && everything == off
|
|---|
| 664 | if (deb) print "option", i
|
|---|
| 665 | print "" >out
|
|---|
| 666 | print "/* option:", i, option[i] >out
|
|---|
| 667 | print " * requires: " requires[i] >out
|
|---|
| 668 | print " * if: " iffs[i] >out
|
|---|
| 669 | print " * enabled-by:" enabledby[i] >out
|
|---|
| 670 | print " * sets: " sets[i], "*/" >out
|
|---|
| 671 | print "#undef PNG_on" >out
|
|---|
| 672 | print "#define PNG_on 1" >out
|
|---|
| 673 |
|
|---|
| 674 | # requires
|
|---|
| 675 | nreqs = split(requires[i], r)
|
|---|
| 676 | for (j=1; j<=nreqs; ++j) {
|
|---|
| 677 | print "#ifndef PNG_" r[j] "_SUPPORTED" >out
|
|---|
| 678 | print "# undef PNG_on /*!" r[j] "*/" >out
|
|---|
| 679 | # This error appears in the final output if something
|
|---|
| 680 | # was switched 'on' but the processing above to force
|
|---|
| 681 | # the requires did not work
|
|---|
| 682 | if (option[i] == "on") {
|
|---|
| 683 | print error, i, "requires", r[j] end >out
|
|---|
| 684 | }
|
|---|
| 685 | print "#endif" >out
|
|---|
| 686 | }
|
|---|
| 687 |
|
|---|
| 688 | # if
|
|---|
| 689 | have_ifs = 0
|
|---|
| 690 | nreqs = split(iffs[i], r)
|
|---|
| 691 | print "#undef PNG_no_if" >out
|
|---|
| 692 | if (nreqs > 0) {
|
|---|
| 693 | have_ifs = 1
|
|---|
| 694 | print "/* if" iffs[i], "*/" >out
|
|---|
| 695 | print "#define PNG_no_if 1" >out
|
|---|
| 696 | for (j=1; j<=nreqs; ++j) {
|
|---|
| 697 | print "#ifdef PNG_" r[j] "_SUPPORTED" >out
|
|---|
| 698 | print "# undef PNG_no_if /*" r[j] "*/" >out
|
|---|
| 699 | print "#endif" >out
|
|---|
| 700 | }
|
|---|
| 701 | print "#ifdef PNG_no_if /*missing if*/" >out
|
|---|
| 702 | print "# undef PNG_on" >out
|
|---|
| 703 | # There is no checking above for this, because we
|
|---|
| 704 | # don't know which 'if' to choose, so whine about
|
|---|
| 705 | # it here:
|
|---|
| 706 | if (option[i] == "on") {
|
|---|
| 707 | print error, i, "needs one of:", iffs[i] end >out
|
|---|
| 708 | }
|
|---|
| 709 | print "#endif" >out
|
|---|
| 710 | }
|
|---|
| 711 |
|
|---|
| 712 | print "#ifdef PNG_on /*requires, if*/" >out
|
|---|
| 713 | # enables
|
|---|
| 714 | print "# undef PNG_not_enabled" >out
|
|---|
| 715 | print "# define PNG_not_enabled 1" >out
|
|---|
| 716 | print " /* enabled by" enabledby[i], "*/" >out
|
|---|
| 717 | nreqs = split(enabledby[i], r)
|
|---|
| 718 | for (j=1; j<=nreqs; ++j) {
|
|---|
| 719 | print "#ifdef PNG_" r[j] "_SUPPORTED" >out
|
|---|
| 720 | print "# undef PNG_not_enabled /*" r[j] "*/" >out
|
|---|
| 721 | # Oops, probably not intended (should be factored
|
|---|
| 722 | # out by the checks above).
|
|---|
| 723 | if (option[i] == "off") {
|
|---|
| 724 | print error, i, "enabled by:", r[j] end >out
|
|---|
| 725 | }
|
|---|
| 726 | print "#endif" >out
|
|---|
| 727 | }
|
|---|
| 728 |
|
|---|
| 729 | print "# ifndef PNG_" i "_SUPPORTED /*!command line*/" >out
|
|---|
| 730 | print "# ifdef PNG_not_enabled /*!enabled*/" >out
|
|---|
| 731 | # 'have_ifs' here means that everything = "off" still allows an 'if' on
|
|---|
| 732 | # an otherwise enabled option to turn it on; otherwise the 'if'
|
|---|
| 733 | # handling is effectively disabled by 'everything = off'
|
|---|
| 734 | if (option[i] == "off" || option[i] == "disabled" && everything != "on" || option[i] == "enabled" && everything == "off" && !have_ifs) {
|
|---|
| 735 | print "# undef PNG_on /*default off*/" >out
|
|---|
| 736 | } else {
|
|---|
| 737 | print "# ifdef PNG_NO_" i >out
|
|---|
| 738 | print "# undef PNG_on /*turned off*/" >out
|
|---|
| 739 | print "# endif" >out
|
|---|
| 740 | print "# ifdef PNG_NO_" i "_SUPPORTED" >out
|
|---|
| 741 | print "# undef PNG_on /*turned off*/" >out
|
|---|
| 742 | print "# endif" >out
|
|---|
| 743 | }
|
|---|
| 744 | print "# endif /*!enabled*/" >out
|
|---|
| 745 | print "# ifdef PNG_on" >out
|
|---|
| 746 | # The _SUPPORTED macro must be defined so that dependent
|
|---|
| 747 | # options output later work.
|
|---|
| 748 | print "# define PNG_" i "_SUPPORTED" >out
|
|---|
| 749 | print "# endif" >out
|
|---|
| 750 | print "# endif /*!command line*/" >out
|
|---|
| 751 | # If PNG_on is still set the option should be defined in
|
|---|
| 752 | # pnglibconf.h
|
|---|
| 753 | print "# ifdef PNG_on" >out
|
|---|
| 754 | if (i ~ /^fail_/) {
|
|---|
| 755 | print error, i, "is on: enabled by:" iffs[i] enabledby[i] ", requires" requires[i] end >out
|
|---|
| 756 | } else if (i !~ /^ok_/) {
|
|---|
| 757 | print def i sup >out
|
|---|
| 758 | # Supported option, set required settings
|
|---|
| 759 | nreqs = split(sets[i], r)
|
|---|
| 760 | for (j=1; j<=nreqs; ++j) {
|
|---|
| 761 | print "# ifdef PNG_set_" r[j] >out
|
|---|
| 762 | # Some other option has already set a value:
|
|---|
| 763 | print error, i, "sets", r[j] ": duplicate setting" end >out
|
|---|
| 764 | print error, " previous value: " end "PNG_set_" r[j] >out
|
|---|
| 765 | print "# else" >out
|
|---|
| 766 | # Else set the default: note that this won't accept arbitrary
|
|---|
| 767 | # values, the setval string must be acceptable to all the C
|
|---|
| 768 | # compilers we use. That means it must be VERY simple; a number,
|
|---|
| 769 | # a name or a string.
|
|---|
| 770 | print "# define PNG_set_" r[j], setval[i " " r[j]] >out
|
|---|
| 771 | print "# endif" >out
|
|---|
| 772 | }
|
|---|
| 773 | }
|
|---|
| 774 | print "# endif /* definition */" >out
|
|---|
| 775 | print "#endif /*requires, if*/" >out
|
|---|
| 776 | if (logunsupported || i ~ /^ok_/) {
|
|---|
| 777 | print "#ifndef PNG_on" >out
|
|---|
| 778 | if (logunsupported) {
|
|---|
| 779 | print und i une >out
|
|---|
| 780 | }
|
|---|
| 781 | if (i ~ /^ok_/) {
|
|---|
| 782 | print error, i, "not enabled: requires:" requires[i] ", enabled by:" iffs[i] enabledby[i] end >out
|
|---|
| 783 | }
|
|---|
| 784 | print "#endif" >out
|
|---|
| 785 | }
|
|---|
| 786 |
|
|---|
| 787 | done[i] = 1
|
|---|
| 788 | ++movement
|
|---|
| 789 | }
|
|---|
| 790 |
|
|---|
| 791 | if (!finished && !movement) {
|
|---|
| 792 | print "option: loop or missing option in dependency tree, cannot process:"
|
|---|
| 793 | for (i in option) if (!done[i]) {
|
|---|
| 794 | print " option", i, "depends on" tree[i], "needs:"
|
|---|
| 795 | nreqs = split(tree[i], r)
|
|---|
| 796 | if (nreqs > 0) for (j=1; j<=nreqs; ++j) if (!done[r[j]]) {
|
|---|
| 797 | print " " r[j]
|
|---|
| 798 | }
|
|---|
| 799 | }
|
|---|
| 800 | exit 1
|
|---|
| 801 | }
|
|---|
| 802 | }
|
|---|
| 803 | print "PNG_DFN_END_SORT" >out
|
|---|
| 804 | print comment, "end of options", cend >out
|
|---|
| 805 |
|
|---|
| 806 | # Do the 'setting' values second, the algorithm the standard
|
|---|
| 807 | # tree walk (O(1)) done in an O(2) while/for loop; iterations
|
|---|
| 808 | # settings x depth, outputting the deepest required macros
|
|---|
| 809 | # first.
|
|---|
| 810 | print "" >out
|
|---|
| 811 | print "/* SETTINGS */" >out
|
|---|
| 812 | print comment, "settings", cend >out
|
|---|
| 813 | # Sort (in dfn.awk) on field 2, the setting name
|
|---|
| 814 | print "PNG_DFN_START_SORT 2" >out
|
|---|
| 815 | finished = 0
|
|---|
| 816 | while (!finished) {
|
|---|
| 817 | finished = 1
|
|---|
| 818 | movement = 0 # done nothing
|
|---|
| 819 | for (i in setting) if (!doneset[i]) {
|
|---|
| 820 | nreqs = split(setting[i], r)
|
|---|
| 821 | if (nreqs > 0) {
|
|---|
| 822 | # By default assume the requires values are options, but if there
|
|---|
| 823 | # is no option with that name check for a setting
|
|---|
| 824 | for (j=1; j<=nreqs; ++j) if (option[r[j]] == "" && !doneset[r[j]]) {
|
|---|
| 825 | break
|
|---|
| 826 | }
|
|---|
| 827 | if (j<=nreqs) {
|
|---|
| 828 | finished = 0
|
|---|
| 829 | continue # try a different setting
|
|---|
| 830 | }
|
|---|
| 831 | }
|
|---|
| 832 |
|
|---|
| 833 | # All the requirements have been processed, output
|
|---|
| 834 | # this setting.
|
|---|
| 835 | if (deb) print "setting", i
|
|---|
| 836 | deflt = defaults[i]
|
|---|
| 837 | # Remove any spurious trailing spaces
|
|---|
| 838 | sub(/ *$/,"",deflt)
|
|---|
| 839 | # A leading @ means leave it unquoted so the preprocessor
|
|---|
| 840 | # can substitute the build time value
|
|---|
| 841 | if (deflt ~ /^ @/)
|
|---|
| 842 | deflt = " " subs substr(deflt, 3) sube
|
|---|
| 843 | print "" >out
|
|---|
| 844 | print "/* setting: ", i >out
|
|---|
| 845 | print " * requires:" setting[i] >out
|
|---|
| 846 | print " * default: ", defaults[i] deflt, "*/" >out
|
|---|
| 847 | for (j=1; j<=nreqs; ++j) {
|
|---|
| 848 | if (option[r[j]] != "")
|
|---|
| 849 | print "#ifndef PNG_" r[j] "_SUPPORTED" >out
|
|---|
| 850 | else
|
|---|
| 851 | print "#ifndef PNG_" r[j] >out
|
|---|
| 852 | print error, i, "requires", r[j] end >out
|
|---|
| 853 | print "# endif" >out
|
|---|
| 854 | }
|
|---|
| 855 | # The precedence is:
|
|---|
| 856 | #
|
|---|
| 857 | # 1) External definition; trumps:
|
|---|
| 858 | # 2) Option 'sets' value; trumps:
|
|---|
| 859 | # 3) Setting 'default'
|
|---|
| 860 | #
|
|---|
| 861 | print "#ifdef PNG_" i >out
|
|---|
| 862 | # PNG_<i> is defined, so substitute the value:
|
|---|
| 863 | print def i, subs "PNG_" i sube end >out
|
|---|
| 864 | print "#else /* use default */" >out
|
|---|
| 865 | print "# ifdef PNG_set_" i >out
|
|---|
| 866 | # Value from an option 'sets' argument
|
|---|
| 867 | print def i, subs "PNG_set_" i sube end >out
|
|---|
| 868 | # This is so that subsequent tests on the setting work:
|
|---|
| 869 | print "# define PNG_" i, "1" >out
|
|---|
| 870 | if (defaults[i] != "") {
|
|---|
| 871 | print "# else /*default*/" >out
|
|---|
| 872 | print def i deflt end >out
|
|---|
| 873 | print "# define PNG_" i, "1" >out
|
|---|
| 874 | }
|
|---|
| 875 | print "# endif /* defaults */" >out
|
|---|
| 876 | print "#endif /* setting", i, "*/" >out
|
|---|
| 877 |
|
|---|
| 878 | doneset[i] = 1
|
|---|
| 879 | ++movement
|
|---|
| 880 | }
|
|---|
| 881 |
|
|---|
| 882 | if (!finished && !movement) {
|
|---|
| 883 | print "setting: loop or missing setting in 'requires', cannot process:"
|
|---|
| 884 | for (i in setting) if (!doneset[i]) {
|
|---|
| 885 | print " setting", i, "requires" setting[i]
|
|---|
| 886 | }
|
|---|
| 887 | exit 1
|
|---|
| 888 | }
|
|---|
| 889 | }
|
|---|
| 890 | print "PNG_DFN_END_SORT" >out
|
|---|
| 891 | print comment, "end of settings", cend >out
|
|---|
| 892 |
|
|---|
| 893 | # Regular end - everything looks ok
|
|---|
| 894 | if (protect != "") {
|
|---|
| 895 | print start "#endif", "/*", protect, "*/" end >out
|
|---|
| 896 | }
|
|---|
| 897 | }
|
|---|
