gcc/vmsconfig.com

   1 $ !
   2 $ !     Set up to compile GCC on VMS.
   3 $ !
   4 $ ! Set the def dir to proper place for use in batch. Works for interactive too.
   5 $flnm = f$enviroment("PROCEDURE")     ! get current procedure name
   6 $set default 'f$parse(flnm,,,"DEVICE")''f$parse(flnm,,,"DIRECTORY")'
   7 $ !
   8 $set symbol/scope=(nolocal,noglobal)
   9 $if f$trnlnm("IFILE$").nes."" then close/noLog ifile$
  10 $ !
  11 $ echo = "write sys$output"
  12 $ !
  13 $ arch_indx = 1 + ((f$getsyi("CPU").ge.128).and.1)      ! vax==1, alpha==2
  14 $ arch = f$element(arch_indx,"|","|vax|alpha|")
  15 $ !
  16 $ if f$search("config.h") .nes. "" then delete config.h.*
  17 $ if arch .eqs. "vax"
  18 $ then
  19 $   copy [.config.'arch']xm-vms.h []config.h
  20 $   echo "Linked `config.h' to `[.config.''arch']xm-vms.h'."
  21 $else
  22 $   open/write cfile []config.h
  23 $   write cfile "#include "+"""config/"+arch+"/xm-"+arch+".h"+"""
  24 $   write cfile "#include "+"""config/"+arch+"/xm-vms.h"+"""
  25 $   close cfile
  26 $   echo "Created `config.h'."
  27 $ endif
  28 $ !
  29 $ if f$search("tconfig.h") .nes. "" then delete tconfig.h.*
  30 $ create []tconfig.h
  31 $DECK
  32 /* tconfig.h == config.h :: target and host configurations are the same */
  33 #include "config.h"
  34 $EOD
  35 $ echo "Created `tconfig.h'.
  36 $ !
  37 $ if f$search("hconfig.h") .nes. "" then delete hconfig.h.*
  38 $ create []hconfig.h
  39 $DECK
  40 /* hconfig.h == config.h :: host and target configurations are the same */
  41 #include "config.h"
  42 $EOD
  43 $ echo "Created `hconfig.h'.
  44 $ !
  45 $ if f$search("tm.h") .nes. "" then delete tm.h.*
  46 $ !
  47 $ edit/tpu/nojournal/nosection/nodisplay/command=sys$input -
  48         [.config.'arch']vms.h /output=[]tm.h
  49 $DECK
  50 !
  51 !  Copy file, changing lines of the form
  52 !       #include "vax/*"
  53 !  or
  54 !       #include "alpha/*"
  55 !  into
  56 !       #include "config-*"
  57 !
  58    file := CREATE_BUFFER("file", GET_INFO(COMMAND_LINE, "file_name"));
  59    targ := LINE_BEGIN & '#include' & SPAN(ASCII(32)+ASCII(9))
  60            & '"' & ('vax' | 'alpha') & '/';
  61    rang := CREATE_RANGE(BEGINNING_OF(file), END_OF(file));
  62    LOOP
  63       incl := SEARCH_QUIETLY(targ, FORWARD, EXACT, rang);
  64       EXITIF incl = 0;
  65       POSITION(BEGINNING_OF(incl));
  66       ERASE(incl);
  67       COPY_TEXT('#include "config-');
  68       rang := CREATE_RANGE(END_OF(incl), END_OF(file));
  69    ENDLOOP;
  70    WRITE_FILE(file, GET_INFO(COMMAND_LINE, "output_file"));
  71    QUIT
  72 $  EOD
  73 $ echo "Generated `tm.h' from `[.config.''arch']vms.h'."
  74 $ !
  75 $       !crude hack to allow compiling from [.cp] subdirectory
  76 $ if f$search("config-''arch'.h") .nes. "" then delete config-'arch'.h;*
  77 $ copy [.config.'arch']'arch'.h []config-'arch'.h
  78 $ echo "Linked `config-''arch'.h' to `[.config.''arch']''arch'.h' for `tm.h'."
  79 $ !
  80 $ call make_lang_incl "options.h"
  81 $ !
  82 $ call make_lang_incl "specs.h"
  83 $ !
  84 $ if arch .eqs. "vax"
  85 $ then
  86 $   if f$search("''arch'.md") .nes. "" then delete 'arch'.md;*
  87 $   copy [.config.'arch']'arch'.md []'arch'.md
  88 $   echo "Copied `''arch'.md' from `[.config.''arch']''arch'.md'."
  89 $ endif
  90 $ !
  91 $ if f$search("aux-output.c") .nes. "" then delete aux-output.c.*
  92 $ copy [.config.'arch']'arch'.c []aux-output.c
  93 $ echo "Linked `aux-output.c' to `[.config.''arch']''arch'.c'.
  94 $ !
  95 $ !
  96 $ !
  97 $ ! Create the file version.opt, which helps identify the executable.
  98 $ !
  99 $search version.c version_string,"="/match=and/output=t.tmp
 100 $open ifile$ t.tmp
 101 $read ifile$ line
 102 $close ifile$
 103 $delete t.tmp;
 104 $line=f$element(1,"""",line)    !extract the portion between 1st & 2nd quotes
 105 $! Format of 'line' is "name-nn.nn.nn[.nn] [date text]" (without the quotes).
 106 $! We want "name-nn.nn.nn[.nn][-date]"; "-date" suffix is optional.
 107 $id = f$element(1,"-",line)             !strip "name-" prefix
 108 $if id.eqs."-" then  id = line          !no prefix found?
 109 $id = f$element(0," ",id) + "-" + f$element(1," ",id)   !first two tokens
 110 $id = id - "- "         !in case 2nd token was empty
 111 $if f$length(id).gt.15 then  id = f$extract(0,15,id)    !length limitation
 112 $!
 113 $open/write ifile$ version.opt
 114 $write ifile$ "ident="+""""+id+""""
 115 $close ifile$
 116 $purge version.opt
 117 $!
 118 $!
 119 $! create linker options files that lists all of the components for all
 120 $! possible compilers.  We do this by editing the file Makefile.in, and
 121 $! generating the relevant files from it.
 122 $!
 123 $!
 124 $! Make a copy of the makefile if the sources are on a disk that is NFS
 125 $!    mounted on a unix machine.
 126 $if f$search("Makefile.in").eqs."" .and. f$search("$M$akefile.in").nes."" -
 127         then copy $M$akefile.in Makefile.in
 128 $! This should be automated across all front-end subdirectories.
 129 $!    For now, it's hardcoded.
 130 $if f$search("[.cp]Makefile.in").eqs."" .and. f$search("[.cp]$M$akefile.in").nes."" -
 131         then copy [.cp]$M$akefile.in [.cp]Makefile.in
 132 $!
 133 $!
 134 $echo "Now processing Makefile.in to generate linker option files."
 135 $edit/TPU/noJournal/noSection/noDisplay/Command=sys$input: Makefile.in -
 136         /Start_Position=('arch_indx')           ! 1 for vax, 2 for alpha
 137 !!
 138 VARIABLE makefile_buf, opt_file_buf, complist_buf, extra_compilers; ! Globals.
 139 VARIABLE arch;          ! String 'vax' or 'alpha', set in configure_makefile().
 140
 141 !!
 142 PROCEDURE process_makefile( )
 143   !
 144   ! Interpret Makefile.in and subsidiary Make-lang.in templates.
 145   !
 146   LOCAL range1, cmark, makefilename;
 147
 148   makefilename    := GET_INFO (COMMAND_LINE, 'FILE_NAME'); ! "Makefile.in"
 149   makefile_buf    := CREATE_BUFFER ("makefile", makefilename);
 150   opt_file_buf    := CREATE_BUFFER ("opt_file");
 151   complist_buf    := CREATE_BUFFER ("complist");
 152   extra_compilers := CREATE_ARRAY;
 153   !
 154   SET (NO_WRITE, makefile_buf, ON);     ! Used as workspace; don't save it.
 155   SET (OUTPUT_FILE, complist_buf, "compilers.list");
 156   !
 157   ! Make some textual substitutions.
 158   !
 159   configure_makefile ();
 160   !
 161   ! Collect a list of supported compilers (``COMPILERS=xxx'' macro).
 162   !
 163   identify_compilers ();
 164   !
 165   ! Plus other known compilers described by Make-lang.in makefile fragments.
 166   ! Add new entries as needed; args are (target name, subdirectory name).
 167   !
 168   additional_compiler ("cc1plus", "cp");
 169   !
 170   WRITE_FILE (complist_buf);            ! Now save "compilers.list".
 171   !
 172   ! Add to this list, as required.  The file "Makefile.in" is searched for
 173   ! a tag that looks like "LINE_BEGIN + 'tag + (optional space) + "="".
 174   ! The contents are assumed to be a list of object files, and from this
 175   ! list a VMS linker options file is generated.
 176   !
 177   generate_option_file ("OBJS",          "=", "independent.opt");
 178   generate_option_file ("LIB2FUNCS",     "=", "libgcc2.list");
 179   generate_option_file ("CXX_LIB2FUNCS", "=", "libgcc2-cxx.list");
 180   generate_option_file ("BC_ALL",        "=", "bc_all.list");
 181   generate_option_file ("BI_OBJ",        "=", "bi_all.opt");
 182   !
 183   ! Now change OBJS in the Makefile, so each language specific options file
 184   ! does not pick up all of the language independent files.
 185   !
 186   POSITION (BEGINNING_OF (makefile_buf));
 187   COPY_TEXT ("OBJS=");  ! New copy with empty value, seen before real OBJS.
 188   SPLIT_LINE;
 189   !
 190   ! Lastly, process each compiler-specific object dependency list.
 191   !
 192   POSITION (BEGINNING_OF (complist_buf));
 193   LOOP
 194     cmark := MARK (NONE);
 195     EXITIF (cmark = END_OF (complist_buf));
 196     ! The current line contains the name of a compiler target, such as "cc1".
 197     MESSAGE (CURRENT_LINE);     ! Give some interactive feedback.
 198     generate_option_file (CURRENT_LINE, ":", CURRENT_LINE + "-objs.opt");
 199     POSITION (cmark);
 200     MOVE_VERTICAL (1);          ! Go to the next line.
 201   ENDLOOP;
 202 ENDPROCEDURE; !process_makefile
 203 !!
 204
 205 PROCEDURE process_objc_lib( )
 206   !
 207   ! Interpret objc/Makefile, after finishing the top makefile.
 208   !
 209   ON_ERROR
 210     [TPU$_OPENIN]:
 211       MESSAGE ("Cannot load objc/Makefile for ""ObjClib""; skipping it.");
 212       RETURN;
 213   ENDON_ERROR;
 214
 215   ERASE (makefile_buf);                 !discard top Makefile
 216   POSITION (END_OF (makefile_buf));
 217   READ_FILE ("[.objc]Make-lang.in");    !load objc one
 218   MESSAGE ("objclib");
 219   pat_replace (ASCII(9), " ");          !change any <tab> to <space>
 220   generate_option_file ("OBJC_O", "=", "objc-objs.opt");
 221   POSITION (BEGINNING_OF (makefile_buf));
 222   ! Join any continuation lines; we want the header list to be one line.
 223   pat_replace ("\" & LINE_END, );
 224   generate_option_file ("OBJC_H", "=", "objc-hdrs.list");
 225 ENDPROCEDURE; !process_objc_lib
 226 !!
 227
 228 PROCEDURE configure_makefile( )
 229   !
 230   ! Plug in some values normally handled by `configure'.  Rather than
 231   ! replacing the dummy entries, insert the real entries before them.
 232   !
 233   IF (GET_INFO (COMMAND_LINE, 'START_RECORD') <> 2) THEN
 234     arch := 'vax';
 235   ELSE
 236     arch := 'alpha';
 237   ENDIF;
 238   POSITION (BEGINNING_OF (makefile_buf));
 239   COPY_TEXT ("target=" + arch + "-vms");        SPLIT_LINE;
 240   COPY_TEXT ("out_file=aux-output.c");          SPLIT_LINE;     ! 'arch'/'arch'.c
 241   COPY_TEXT ("out_object_file=aux-output.o");   SPLIT_LINE;     ! aux-output.obj
 242   COPY_TEXT ("md_file=" + arch + ".md");        SPLIT_LINE;     ! 'arch'/'arch'.md
 243   COPY_TEXT ("tm_file=tm.h");                   SPLIT_LINE;     ! 'arch'/tm-vms.h
 244   pat_replace ("@" &
 245     SPAN("abcdefghijklmnopqrstuvwxyz_ABCDEFGHIJKLMNOPQRSTUVWXYZ#~0123456789")
 246                    & "@", );            ! strip `configure' dummy values
 247 ENDPROCEDURE; !configure_makefile
 248 !!
 249
 250 PROCEDURE identify_compilers( )
 251   !
 252   ! Retrieve the list of supported compilers from Makefile.in, and put them
 253   ! into file "compilers.list", one per line, for subsequent access from DCL.
 254   !
 255   LOCAL range1;
 256
 257   ! Strip most comments from the makefile, to speed up subsequent processing.
 258   POSITION (BEGINNING_OF (makefile_buf));
 259   pat_replace (LINE_BEGIN & "#" & REMAIN & LINE_END, );
 260   pat_replace ("$(exeext)", );
 261   pat_replace ("@all_compilers@", );
 262 !#  ! Convert directory references to VMS syntax (actually, just strip it).
 263 !#  pat_replace (" $(srcdir)/", " ");
 264   ! Look up the ``COMPILERS=cc1 xyzzy'' Makefile macro and put
 265   ! its ``cc1 xyzzy'' value into the compilers buffer.
 266   POSITION (BEGINNING_OF (complist_buf));
 267 !#--at some point we may want to add this--
 268 !#  recursive_fetch_tag ("CCCP", "=");    ! Include the preprocessor.
 269 !#  POSITION (END_OF (complist_buf));
 270   recursive_fetch_tag ("COMPILERS", "=");
 271   ! Convert all spaces into newlines, then remove any blank lines.
 272   pat_replace (SPAN(" "), LINE_END);
 273   pat_replace (LINE_BEGIN & LINE_END, );
 274 ENDPROCEDURE; !identify_compilers
 275 !!
 276
 277 PROCEDURE additional_compiler( cname, subdir )
 278   !
 279   ! Load Make-lang.in for compiler CNAME from SUBDIR and append it to the
 280   ! end of Makefile.in's buffer.  Add CNAME to the "compilers.list" buffer.
 281   !
 282   ON_ERROR
 283     ! Don't abort if user removes the supporting subdirectory for a
 284     ! language she's not interested in.
 285     [TPU$_OPENIN]:
 286       MESSAGE ("Cannot load " + subdir + "/Make-lang.in for "
 287                + '"' + cname + '"' + "; skipping it.");
 288       RETURN;
 289   ENDON_ERROR;
 290
 291   POSITION (END_OF (makefile_buf));
 292   SPLIT_LINE;   ! Separate with a blank line.
 293   READ_FILE ("[." + subdir + "]Make-lang.in");  ! Load Makefile fragment.
 294   ! Make sure that $(xxx_OTH_SRCS) expands to empty string by renaming $(it)
 295   pat_replace ("_OTH_SRCS)", "_OTH_SRCS_dummy_)");
 296   ! Convert subdirectory references into VMS syntax.
 297   pat_replace ("$(srcdir)/" + subdir + "/", "[." + subdir + "]");
 298
 299     ! Temporary? hack for cp/Make-lang.in's mishandling of "input.c".
 300     IF (subdir = 'cp') THEN
 301       pat_replace ("[.cp]input.c", );   ! Discard this text.
 302     ENDIF;
 303
 304   ! Add this name to compilers.list.
 305   POSITION (END_OF (complist_buf));
 306   COPY_TEXT (cname);
 307   ! Make array entry indexed by compiler's file name; its value is arbitrary.
 308   extra_compilers{cname} := subdir;
 309 ENDPROCEDURE; !additional_compiler
 310 !!
 311
 312 PROCEDURE generate_option_file( tag_name, punct, outfile_name )
 313   !
 314   ! Produce a file listing the names of particular object files, for use
 315   ! as input to the linker and also for use in finding source names by
 316   ! make-cc1.com.  Generally, any name suffix will be suppressed.
 317   !
 318   LOCAL range1, range2;
 319
 320   POSITION (BEGINNING_OF (opt_file_buf));
 321   recursive_fetch_tag (tag_name, punct);
 322   ! First fix up for subdirectory/Make-lang.in.
 323   IF (pat_replace ("stamp-objlist" & (SPAN(" ")|LINE_END), " ") > 0) THEN
 324     recursive_fetch_tag ("stamp-objlist", ":");
 325   ENDIF;
 326   ! Now fix up a few things in the output buffer.
 327   pat_replace (("bytecode"|"Makefile") & (SPAN(" ")|LINE_END), " ");
 328 !#  FILL (CURRENT_BUFFER, " ", 1, 80, 0);       ! Condense things a bit.
 329   pat_replace ("." & ("o"|"c"|"y") & ((SPAN(" ")&LINE_END)|LINE_END), LINE_END);
 330   pat_replace ("." & ("o"|"c"|"y") & SPAN(" "), ",");
 331   pat_replace (".h" & (SPAN(" ")|LINE_END), ".h,");
 332   ! Remove trailing commas, if present.
 333   pat_replace ("," & ((SPAN(" ")&LINE_END)|LINE_END), LINE_END);
 334   ! Get rid of spaces and blank lines.
 335   pat_replace (SPAN(" "), LINE_END);
 336   pat_replace (LINE_BEGIN & LINE_END, );
 337   ! Second fix up for subdirectory/Make-lang.in;
 338   ! avoid "sticky defaults" when linker processes the resulting options file.
 339   IF (extra_compilers{outfile_name - "-objs.opt"} <> TPU$K_UNSPECIFIED) THEN
 340     POSITION (BEGINNING_OF (opt_file_buf));
 341     range1 := CREATE_RANGE (MARK (NONE), END_OF (CURRENT_BUFFER), NONE);
 342     LOOP
 343       range2 := SEARCH_QUIETLY (LINE_BEGIN | ",", FORWARD, EXACT, range1);
 344       EXITIF (range2 = 0);
 345       POSITION (BEGINNING_OF (range2));
 346       IF (CURRENT_CHARACTER = ",") THEN  MOVE_HORIZONTAL (1); ENDIF;
 347       ! If it's not already "[.subdir]name", explicitly make it "[]name".
 348       IF (CURRENT_CHARACTER <> "[") THEN  COPY_TEXT ("[]"); ENDIF;
 349       MOVE_HORIZONTAL (1);
 350       MODIFY_RANGE (range1, MARK (NONE), END_OF (range1));
 351     ENDLOOP;
 352   ENDIF;
 353   ! Now write the output file.
 354   SET (OUTPUT_FILE, opt_file_buf, outfile_name);
 355   WRITE_FILE (opt_file_buf);
 356   ERASE (opt_file_buf);         ! Clear buffer out for next opt_file pass.
 357 ENDPROCEDURE; !generate_option_file
 358 !!
 359
 360 PROCEDURE recursive_fetch_tag( tag_n, punct )
 361   !
 362   ! Look up TAG_N, copy it to OPT_FILE_BUF, and then translate any $(...)
 363   ! definitions that appear.  The translation is put at the current point.
 364   !
 365   LOCAL mark1, mark2, range1, tag_range, tag_string;
 366
 367   fetch_tag (tag_n, punct);
 368   ! Substitute any makefile symbols $(...).
 369   POSITION (BEGINNING_OF (CURRENT_BUFFER));
 370   LOOP
 371     range1 := SEARCH_QUIETLY ("$(" &
 372       SPAN("abcdefghijklmnopqrstuvwxyz_ABCDEFGHIJKLMNOPQRSTUVWXYZ#~0123456789")
 373                                    & ")", FORWARD, EXACT);
 374     EXITIF (range1 = 0);
 375     POSITION (BEGINNING_OF (range1));
 376     MOVE_HORIZONTAL (2);        ! Past opening "$(".
 377     mark1 := MARK (NONE);
 378     POSITION (END_OF (range1));
 379     MOVE_HORIZONTAL (-1);       ! In front of closing ")".
 380     mark2 := MARK (NONE);
 381     tag_range := CREATE_RANGE (mark1, mark2, NONE);
 382     POSITION (END_OF (range1));
 383     tag_string := STR (tag_range);
 384     ERASE (range1);
 385     fetch_tag (tag_string, "=");
 386     POSITION (BEGINNING_OF (CURRENT_BUFFER));
 387   ENDLOOP;
 388 ENDPROCEDURE; !recursive_fetch_tag
 389 !!
 390
 391 PROCEDURE fetch_tag( tag_n, punct )
 392   !
 393   ! Looks up the translation of a tag, and inserts it at the current location
 394   ! in the buffer.
 395   !
 396   LOCAL mark0, mark1, mark2, range2;
 397
 398   mark0 := MARK (NONE);     ! Remember where we started; restore before return.
 399   POSITION (BEGINNING_OF (makefile_buf));
 400   ! The tag definition always starts in the first column, and might have
 401   ! optional space(es) before "=" or ":" punctuation.
 402   range2 := SEARCH_QUIETLY (LINE_BEGIN & tag_n & ((SPAN(" ") & punct) | punct),
 403                             FORWARD, EXACT);
 404   IF (range2 = 0) THEN
 405     POSITION (mark0);
 406     RETURN;
 407   ENDIF;
 408   POSITION (END_OF (range2));
 409   MOVE_HORIZONTAL (1);          ! Move beyond "TAG=".
 410   mark1 := MARK (NONE);
 411   POSITION (BEGINNING_OF (range2));
 412   LOOP
 413     MOVE_VERTICAL (1);
 414     MOVE_HORIZONTAL (-2);
 415     EXITIF (CURRENT_CHARACTER <> "\");
 416     ERASE_CHARACTER (1);
 417     MOVE_HORIZONTAL (1);
 418   ENDLOOP;
 419   MOVE_HORIZONTAL (1);
 420   mark2 := MARK (NONE);
 421   range2 := CREATE_RANGE (mark1, mark2, NONE);
 422   POSITION (mark0);
 423   IF (LENGTH (range2) <> 0) THEN
 424     COPY_TEXT (range2);
 425   ENDIF;
 426 ENDPROCEDURE; !fetch_tag
 427 !!
 428
 429 PROCEDURE pat_replace( oldstring, newstring )
 430   !
 431   ! Replace all occurrences of a pattern.
 432   !
 433   LOCAL range1, range2, kill_it, count;
 434
 435   count := 0;
 436   kill_it := (GET_INFO (newstring, 'TYPE') = UNSPECIFIED);      ! Omitted arg.
 437   range1 := CREATE_RANGE (BEGINNING_OF (CURRENT_BUFFER),
 438                           END_OF (CURRENT_BUFFER), NONE);
 439   LOOP
 440     range2 := SEARCH_QUIETLY (oldstring, FORWARD, EXACT, range1);
 441     EXITIF (range2 = 0);
 442     count := count + 1;
 443     POSITION (BEGINNING_OF (range2));
 444     ERASE (range2);
 445     IF (newstring = LINE_END) THEN
 446       SPLIT_LINE;
 447     ELSE IF (NOT kill_it) THEN
 448       COPY_TEXT (newstring);
 449     ENDIF; ENDIF;
 450     MODIFY_RANGE (range1, MARK (NONE), END_OF (range1));
 451   ENDLOOP;
 452   RETURN count;
 453 ENDPROCEDURE; !pat_replace
 454 !!
 455
 456 !
 457 ! This is the main routine.
 458 !
 459 process_makefile ();
 460 process_objc_lib ();    !this uses a different makefile
 461 QUIT;   ! All done; don't write any modified buffers.
 462 !!
 463 $ echo ""
 464 $!
 465 $! Remove excessive versions of the option files...
 466 $!
 467 $ purge *.opt,*.list
 468 $!
 469 $!
 470 $!
 471 $ if f$search("config.status") .nes. "" then delete config.status.*
 472 $ create config.status
 473 $ open/append ifile$ config.status
 474 $ write ifile$ "Links are now set up for use with a ''arch' running VMS."
 475 $ close ifile$
 476 $ type config.status
 477 $ echo ""
 478 $!
 479 $ exit
 480 $
 481 $!
 482 $! Construct a header file based on subdirectory contents
 483 $!
 484 $make_lang_incl: subroutine
 485 $  if f$search(p1).nes."" then delete 'p1';*
 486 $  create 'p1'  !empty file with ordinary text-file attributes
 487 $  open/Append ifile$ 'p1'
 488 $  write ifile$ "/* ''p1' */"
 489 $  hfile = f$search("[]''p1'")
 490 $  topdir = f$parse(hfile,,,"DIRECTORY") - "]"
 491 $lang_incl_loop:
 492 $  hfile = f$search("[.*]lang-''p1'")
 493 $  if hfile.eqs."" then goto lang_incl_done
 494 $  dir = f$parse(hfile,,,"DIRECTORY") - "]"
 495 $! convert absolute path to relative one, yielding "[.subdir]"
 496 $  dir = "[" + f$edit(dir - topdir,"LOWERCASE") + "]"
 497 $  write ifile$ "#include ""''dir'lang-''p1'"""
 498 $  goto lang_incl_loop
 499 $lang_incl_done:
 500 $  close ifile$
 501 $  echo "Created `''p1''."
 502 $ endsubroutine !make_lang_incl