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+ − 1 This directory contains C header files containing
+ − 2 operating-system-specific definitions. Each file describes a
+ − 3 particular operating system. The emacs configuration script edits
+ − 4 ../config.h to include the appropriate one of these files, and then
+ − 5 each emacs source file includes config.h.
+ − 6
+ − 7 template.h is a generic template for system descriptions; it describes
+ − 8 the parameters a system file can specify.
+ − 9
+ − 10 General XEmacs Changes
+ − 11 ---------------------------
+ − 12 The following is a list of those changes made globally across all
+ − 13 files. They are not marked individually in each header file. All
+ − 14 other changes should be preceded by a comment /* XEmacs change */.
+ − 15
+ − 16
+ − 17 1. Removed all #defines of [read|write|open|close]. This is now
+ − 18 handled automatically by checking the INTERRUPTIBLE_IO etc. flags.
+ − 19
+ − 20 2. Removed all instances of #undef SIGIO and replaced them with
+ − 21 #define BROKEN_SIGIO. Jamie says:
+ − 22
+ − 23 /* use BROKEN_SIGIO instead of this kludge -- jwz */
+ − 24
+ − 25 3. All instances of HAVE_GETWD, HAVE_DUP2, HAVE_UNISTD_H, NEED_UNISTD_H,
+ − 26 HAVE_GETTIMEOFDAY and NEED_REALPATH removed. We detect these
+ − 27 automatically with configure.
+ − 28
+ − 29 4. All instances of HAVE_X11 replaced with HAVE_X_WINDOWS. We don't
+ − 30 support X10 or earlier so the HAVE_X11 define was purged.
+ − 31
+ − 32 5. Most of the signal crap (e.g. redefining sigsetmask, defining
+ − 33 POSIX_SIGNALS) has been removed. There are four possible
+ − 34 signal paradigms that all systems fall into, and we auto-detect
+ − 35 them in configure and handle them in syssignal.h.
+ − 36
+ − 37 6. Removed references to INTERRUPT_INPUT. XEmacs does not use
+ − 38 this bizarre way of reading input.
+ − 39
+ − 40 7. Removed references to BROKEN_FIONREAD. FIONREAD is used only
+ − 41 in INTERRUPT_INPUT and in the select() emulator, neither of
+ − 42 which are supported in XEmacs.
+ − 43
+ − 44 8. Removed references to NOMULTIPLEJOBS. This is unused in XEmacs
+ − 45 and in FSF Emacs.
+ − 46
+ − 47 9. Removed references to HAVE_WAIT_HEADER and WAIT_USE_INT.
+ − 48 They are unnecessary with the cleaned up syswait.h in XEmacs.
+ − 49 (We autodetect sys/wait.h). Instead, #define or #undef
+ − 50 HAVE_UNION_WAIT.
+ − 51
+ − 52 10. Removed BSTRING. Not used anywhere. (If the header file
+ − 53 says there are bugs in bcopy() or the like, however, a
+ − 54 #define BROKEN_BCOPY is added for reference.)
+ − 55
+ − 56 11. Removed #defines of bcopy, bzero, bcmp, index, rindex.
+ − 57 XEmacs makes consistent use of the ANSI-equivalent
+ − 58 functions memcpy, memset, memcmp, strchr, strrchr.
+ − 59
+ − 60 12. '#define subprocesses' removed. Use '#define NO_SUBPROCESSES'
+ − 61 if they don't exist.
+ − 62
+ − 63 13. References to HAVE_VFORK removed. configure detects this.
+ − 64
+ − 65 14. Removed references to SYSV_SYSTEM_DIR, NONSYSTEM_DIR_LIBRARY,
+ − 66 HAVE_SOCKETS, HAVE_SYSVIPC. configure detects these.
+ − 67
+ − 68 15. Removed defines of HAVE_TERMIOS, HAVE_TERMIO, and
+ − 69 HAVE_TCATTR (when HAVE_TERMIOS was also defined).
+ − 70 configure detects these and systty.h automatically defines
+ − 71 HAVE_TCATTR when HAVE_TERMIOS is defined.
+ − 72
+ − 73 16. Removed SETPGRP_RELEASES_CTTY. Not necessary any more, with
+ − 74 fixed definitions of EMACS_SEPARATE_PROCESS_GROUP et al.
+ − 75
+ − 76 17. Removed defines of NLIST_STRUCT. configure detects this.
+ − 77
+ − 78 18. Removed defines of _setjmp and _longjmp. configure detects this.
+ − 79
+ − 80 19. Removed all '#define static' business. Defines NO_REMAP instead.
+ − 81
+ − 82 20. Removed defines of HAVE_MACH_MACH_H. configure detects this.
