annotate src/s/README @ 558:ed498ef2108b

[xemacs-hg @ 2001-05-23 09:59:33 by ben] xemacs.mak: call `ver' to get the exact os version and put it in the installation; suggestion from adrian. behavior-defs.el: Add scroll-in-place, jka-compr, efs, fix up some things. pop.c: Remove BROKEN_CYGWIN. etc\sample.init.el: Rewrite to be much more careful about loading features -- now it decays gracefully even in the complete absence of packages. Also avoid doing obnoxious things when loading efs. configure.in: add some support for eventually turning on file coding by default. Fix numerous places where AC_MSG_WARN had quotes around its arg, which is bad. Replace with []. Same for AC_MSG_ERROR. s\cygwin32.h, s\mingw32.h: remove support for way old beta versions of cygwin. don't put -Wno-sign-compare in the system switches; this isn't a system issue. define BROKEN_SIGIO for cygwin to get C-g support. device-msw.c: signal an error rather than crash with an unavailable network printer (from Mike Alexander). event-msw.c: cleanup headers. fix (hopefully) an error with data corruption when sending to a network connection. fileio.c: Fix evil code that attempts to handle the ~user prefix by (a) always assuming we're referencing ourselves and not even verifying the user -- hence any file with a tilde as its first char is invalid! (b) if there wasn't a slash following the filename, the pointer was set *past* the end of file and we started reading from uninitialized memory. Now we simply treat these as files, always. optionally for 21.4 (doc fix): lread.c: cambia de pas_de_lache_ici -- al minimo usa la palabra certa. frame.c: fix warnings. emacs.c, nt.c, ntproc.c, process-nt.c, realpath.c, unexnt.c: rename MAX_PATH to standard PATH_MAX. process-nt.c, realpath.c: cleanup headers. process-unix.c, sysdep.c, systime.h, syswindows.h: kill BROKEN_CYGWIN and support for way old beta versions of cygwin. sysfile.h: use _MAX_PATH (Windows) preferentially for PATH_MAX if defined. include io.h on Cygwin (we need get_osfhandle()). include sys/fcntl.h always, since we were including it in various header files anyway. unexcw.c: fix up style to conform to standard. remove duplicate definition of PERROR. buffer.c: comment change. database.c, debug.h, device-tty.c, dired-msw.c, glyphs-msw.c: header cleanups (remove places that directly include a system header file, because we have our own layer to do this more cleanly and portably); indentation fixes.
author ben
date Wed, 23 May 2001 09:59:48 +0000
parents 376386a54a3c
children 861f2601a38b
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1 This directory contains C header files containing
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2 operating-system-specific definitions. Each file describes a
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3 particular operating system. The emacs configuration script edits
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4 ../config.h to include the appropriate one of these files, and then
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5 each emacs source file includes config.h.
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6
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7 template.h is a generic template for system descriptions; it describes
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8 the parameters a system file can specify.
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9
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10 General XEmacs Changes
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11 ---------------------------
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12 The following is a list of those changes made globally across all
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13 files. They are not marked individually in each header file. All
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14 other changes should be preceded by a comment /* XEmacs change */.
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17 1. Removed all #defines of [read|write|open|close]. This is now
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18 handled automatically by checking the INTERRUPTIBLE_IO etc. flags.
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20 2. Removed all instances of #undef SIGIO and replaced them with
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21 #define BROKEN_SIGIO. Jamie says:
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22
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23 /* use BROKEN_SIGIO instead of this kludge -- jwz */
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24
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25 3. All instances of HAVE_GETWD, HAVE_DUP2, HAVE_UNISTD_H, NEED_UNISTD_H,
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26 HAVE_GETTIMEOFDAY and NEED_REALPATH removed. We detect these
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27 automatically with configure.
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28
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29 4. All instances of HAVE_X11 replaced with HAVE_X_WINDOWS. We don't
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30 support X10 or earlier so the HAVE_X11 define was purged.
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31
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32 5. Most of the signal crap (e.g. redefining sigsetmask, defining
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33 POSIX_SIGNALS) has been removed. There are four possible
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34 signal paradigms that all systems fall into, and we auto-detect
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35 them in configure and handle them in syssignal.h.
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36
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37 6. Removed references to INTERRUPT_INPUT. XEmacs does not use
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38 this bizarre way of reading input.
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39
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40 7. Removed references to BROKEN_FIONREAD. FIONREAD is used only
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41 in INTERRUPT_INPUT and in the select() emulator, neither of
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42 which are supported in XEmacs.
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43
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44 8. Removed references to NOMULTIPLEJOBS. This is unused in XEmacs
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45 and in FSF Emacs.
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46
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47 9. Removed references to HAVE_WAIT_HEADER and WAIT_USE_INT.
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48 They are unnecessary with the cleaned up syswait.h in XEmacs.
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49 (We autodetect sys/wait.h). Instead, #define or #undef
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50 HAVE_UNION_WAIT.
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51
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52 10. Removed BSTRING. Not used anywhere. (If the header file
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53 says there are bugs in bcopy() or the like, however, a
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54 #define BROKEN_BCOPY is added for reference.)
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56 11. Removed #defines of bcopy, bzero, bcmp, index, rindex.
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57 XEmacs makes consistent use of the ANSI-equivalent
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58 functions memcpy, memset, memcmp, strchr, strrchr.
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59
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60 12. '#define subprocesses' removed. Use '#define NO_SUBPROCESSES'
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61 if they don't exist.
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62
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63 13. References to HAVE_VFORK removed. configure detects this.
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64
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65 14. Removed references to SYSV_SYSTEM_DIR, NONSYSTEM_DIR_LIBRARY,
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66 HAVE_SOCKETS, HAVE_SYSVIPC. configure detects these.
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67
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68 15. Removed defines of HAVE_TERMIOS, HAVE_TERMIO, and
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69 HAVE_TCATTR (when HAVE_TERMIOS was also defined).
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70 configure detects these and systty.h automatically defines
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71 HAVE_TCATTR when HAVE_TERMIOS is defined.
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72
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73 16. Removed SETPGRP_RELEASES_CTTY. Not necessary any more, with
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74 fixed definitions of EMACS_SEPARATE_PROCESS_GROUP et al.
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75
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76 17. Removed defines of NLIST_STRUCT. configure detects this.
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77
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78 18. Removed defines of _setjmp and _longjmp. configure detects this.
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80 19. Removed all '#define static' business. Defines NO_REMAP instead.
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81
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82 20. Removed defines of HAVE_MACH_MACH_H. configure detects this.