code.delx.au - gnu-emacs/blob - src/s/freebsd.h

   1 /* s/ file for freebsd system.  */
   2
   3 /* Get the correct __FreeBSD_version, even if this is before that was
   4    defined. */
   5 #ifndef __FreeBSD_version
   6 #ifndef __FreeBSD__
   7 #define __FreeBSD_version 199401
   8 #elif __FreeBSD__ == 1
   9 #define __FreeBSD_version 199405
  10 #else
  11 #include <osreldate.h>
  12 #endif
  13 #endif /* !defined __FreeBSD_version */
  14
  15 /* '__FreeBSD__' is defined by the preprocessor on FreeBSD-1.1 and up.
  16    Earlier versions do not have shared libraries, so inhibit them.
  17    You can inhibit them on newer systems if you wish
  18    by defining NO_SHARED_LIBS.  */
  19 #ifndef __FreeBSD__
  20 #define NO_SHARED_LIBS
  21 #endif
  22
  23
  24 #if 0 /* This much, alone, seemed sufficient as of 19.23.
  25          But it seems better to be independent of netbsd.h.  */
  26 #include "netbsd.h"
  27
  28 #undef LIB_GCC
  29 #define LIB_GCC -lgcc
  30 #undef NEED_ERRNO
  31 #endif /* 0 */
  32
  33
  34 /* Get most of the stuff from bsd4.3 */
  35 #include "bsd4-3.h"
  36
  37 /* For mem-limits.h. */
  38 #define BSD4_2
  39
  40 /* These aren't needed, since we have getloadavg.  */
  41 #undef KERNEL_FILE
  42 #undef LDAV_SYMBOL
  43
  44 #define PENDING_OUTPUT_COUNT(FILE) ((FILE)->_p - (FILE)->_bf._base)
  45
  46 #define LIBS_DEBUG
  47 #define LIBS_SYSTEM -lutil
  48 #define LIBS_TERMCAP -ltermcap
  49
  50 #define SYSV_SYSTEM_DIR
  51
  52 /* freebsd has POSIX-style pgrp behavior. */
  53 #undef BSD_PGRPS
  54 #define GETPGRP_NO_ARG
  55
  56 #ifdef __ELF__
  57
  58 #define LD_SWITCH_SYSTEM
  59 #define START_FILES pre-crt0.o /usr/lib/crt1.o /usr/lib/crti.o /usr/lib/crtbegin.o
  60 #define UNEXEC unexelf.o
  61 #define LIB_STANDARD -lgcc -lc -lgcc /usr/lib/crtend.o /usr/lib/crtn.o
  62 #undef LIB_GCC
  63 #define LIB_GCC
  64
  65 #else /* not __ELF__ */
  66
  67 #ifndef NO_SHARED_LIBS
  68 #define LD_SWITCH_SYSTEM -e start -dc
  69 #define HAVE_TEXT_START         /* No need to define `start_of_text'. */
  70 #if __FreeBSD_version >= 300002
  71 #define START_FILES pre-crt0.o /usr/lib/aout/crt0.o
  72 #else /* __FreeBSD_version < 300002 */
  73 #define START_FILES pre-crt0.o /usr/lib/crt0.o
  74 #endif /* __FreeBSD_version < 300002 */
  75 #define UNEXEC unexsunos4.o
  76 #define RUN_TIME_REMAP
  77 #define LIB_GCC -lgcc
  78
  79 #ifndef N_TRELOFF
  80 #define N_PAGSIZ(x) __LDPGSZ
  81 #define N_BSSADDR(x) (N_ALIGN(x, N_DATADDR(x)+x.a_data))
  82 #define N_TRELOFF(x) N_RELOFF(x)
  83 #endif
  84 #else /* NO_SHARED_LIBS */
  85 #ifdef __FreeBSD__  /* shared libs are available, but the user prefers
  86                      not to use them.  */
  87 #define LD_SWITCH_SYSTEM -Bstatic
  88 #define A_TEXT_OFFSET(x) (sizeof (struct exec))
  89 #define A_TEXT_SEEK(hdr) (N_TXTOFF(hdr) + A_TEXT_OFFSET(hdr))
  90 #endif /* __FreeBSD__ */
  91 #endif /* NO_SHARED_LIBS */
  92
  93 #endif /* not __ELF__ */
  94
  95 #define HAVE_WAIT_HEADER
  96 #if 0
  97 #define HAVE_GETPAGESIZE  /* configure now puts this in config.h */
  98 #endif
  99 #define HAVE_TERMIOS
 100 #define NO_TERMIO
 101 #define DECLARE_GETPWUID_WITH_UID_T
 102
 103 /* freebsd uses OXTABS instead of the expected TAB3. */
 104 #define TABDLY OXTABS
 105 #define TAB3 OXTABS
 106
 107 /* this silences a few compilation warnings */
 108 #undef BSD_SYSTEM
 109 #if __FreeBSD__ == 1
 110 #define BSD_SYSTEM 199103
 111 #elif __FreeBSD__ == 2
 112 #define BSD_SYSTEM 199306
 113 #elif __FreeBSD__ >= 3
 114 #define BSD_SYSTEM 199506
 115 #endif
 116
 117 #define WAITTYPE int
 118 /* get this since it won't be included if WAITTYPE is defined */
 119 #ifdef emacs
 120 #include <sys/wait.h>
 121 #endif
 122 #define WRETCODE(w) (_W_INT(w) >> 8)
 123
 124 /* Needed to avoid hanging when child process writes an error message
 125    and exits -- enami tsugutomo <enami@ba2.so-net.or.jp>.  */
 126 #define vfork fork
 127
 128 /* Don't close pty in process.c to make it as controlling terminal.
 129    It is already a controlling terminal of subprocess, because we did
 130    ioctl TIOCSCTTY.  */
 131 #define DONT_REOPEN_PTY
 132
 133 /* CLASH_DETECTION is defined in bsd4-3.h.
 134    In FreeBSD 2.1.5 (and other 2.1.x), this results useless symbolic links
 135    remaining in /tmp or other directories with +t bit.
 136    To avoid this problem, you could #undef it to use no file lock. */
 137 /* #undef CLASH_DETECTION */
 138
 139 /* If the system's imake configuration file defines `NeedWidePrototypes'
 140    as `NO', we must define NARROWPROTO manually.  Such a define is
 141    generated in the Makefile generated by `xmkmf'.  If we don't
 142    define NARROWPROTO, we will see the wrong function prototypes
 143    for X functions taking float or double parameters.  */
 144
 145 #define NARROWPROTO 1
 146
 147 /* The following is needed to make `configure' find Xpm, Xaw3d and
 148    image include and library files if using /usr/bin/gcc.  That
 149    compiler seems to be modified to not find headers in
 150    /usr/local/include or libs in /usr/local/lib by default.  */
 151
 152 #define C_SWITCH_SYSTEM -I /usr/X11R6/include -I /usr/local/include -L /usr/local/lib
 153
 154 /* Circumvent a bug in FreeBSD.  In the following sequence of
 155    writes/reads on a PTY, read(2) returns bogus data:
 156
 157    write(2)  1022 bytes
 158    write(2)   954 bytes, get EAGAIN
 159    read(2)   1024 bytes in process_read_output
 160    read(2)     11 bytes in process_read_output
 161
 162    That is, read(2) returns more bytes than have ever been written
 163    successfully.  The 1033 bytes read are the 1022 bytes written
 164    successfully after processing (for example with CRs added if the
 165    terminal is set up that way which it is here).  The same bytes will
 166    be seen again in a later read(2), without the CRs.  */
 167
 168 #define BROKEN_PTY_READ_AFTER_EAGAIN 1
 169
 170 /* Tell that garbage collector that setjmp is known to save all
 171    registers relevant for conservative garbage collection in the
 172    jmp_buf.  */
 173
 174 #define GC_SETJMP_WORKS 1
 175
 176 /* In FreeBSD 4, we must use terminfo.o instead of tparam.o.  Termcap
 177    capabilities use %-specifiers that tparm.o cannot handle.
 178    Libtermcap.a contains a `tparm' that terminfo.c can use.  */
 179
 180 #if __FreeBSD__ >= 4
 181 #define TERMCAP_OBJ terminfo.o
 182 #endif