src/osdef.sh

   1 #! /bin/sh
   2 #
   3 # osdef.sh -- copy osdef.h.in to osdef.h while removing declarations
   4 # found in the system header files. Caution: weird sed magic going on here.
   5 # Warnings are printed if sed did not survive.
   6 #
   7 # (C) Michael Schroeder, Juergen Weigert
   8 #
   9 # osdef.h.in has been split into osdef1.h.in and osdef2.h.in, because some
  10 # sed's could not handle the amount of commands (is 50 commands the limit?).
  11 #
  12 # 31.10.95 jw.
  13
  14 if test -z "$CC"; then
  15   CC=cc
  16 fi
  17 if test -z "$srcdir"; then
  18   srcdir=.
  19 fi
  20
  21 rm -f core* *.core
  22
  23 cat << EOF > osdef0.c
  24 #ifndef __APPLE__
  25 # define select select_declared_wrong
  26 #endif
  27 #define tgetstr tgetstr_declared_wrong
  28 #include "auto/config.h"
  29 #include "os_unix.h"    /* bring in most header files, more follow below */
  30 #include "os_unixx.h"   /* bring in header files for os_unix.c */
  31
  32 #ifdef HAVE_TERMCAP_H
  33 # include <termcap.h>   /* only for term.c */
  34 #endif
  35
  36 #ifdef HAVE_FCNTL_H
  37 # include <fcntl.h>             /* only used in a few files */
  38 #endif
  39
  40 #ifdef HAVE_SYS_STATFS_H
  41 # include <sys/types.h>
  42 # include <sys/statfs.h>        /* only for memfile.c */
  43 #endif
  44
  45 #ifdef HAVE_X11
  46 # include <X11/Intrinsic.h>
  47 #endif
  48 EOF
  49
  50 # Mac uses precompiled headers, but we need real headers here.
  51 case `uname` in
  52     Darwin)     $CC -I. -I$srcdir -E -no-cpp-precomp osdef0.c >osdef0.cc;;
  53     *)          $CC -I. -I$srcdir -E osdef0.c >osdef0.cc;;
  54 esac
  55
  56 # insert a space in front of each line, so that a function name at the
  57 # start of the line is matched with "[)*,       ]\1[    (]"
  58 sed < osdef0.cc -e '/\(..*\)/s// \1/' > osdef0.ccc
  59
  60 sed < $srcdir/osdef1.h.in -n -e '/^extern/s@.*[)*       ][)*    ]*\([a-zA-Z_][a-zA-Z0-9_]*\) __ARGS.*@/[)*,     ][(]*\1[)]*[    (]/i\\\
  61 \\/\\[^a-zA-Z_\\]\1 __ARGS\\/d@p' > osdef11.sed
  62
  63 sed < $srcdir/osdef2.h.in -n -e '/^extern/s@.*[)*       ][)*    ]*\([a-zA-Z_][a-zA-Z0-9_]*\) __ARGS.*@/[)*,     ][(]*\1[)]*[    (]/i\\\
  64 \\/\\[^a-zA-Z_\\]\1 __ARGS\\/d@p' > osdef21.sed
  65
  66 cat << EOF > osdef2.sed
  67 1i\\
  68 /*
  69 1i\\
  70  * osdef.h is automagically created from osdef?.h.in by osdef.sh -- DO NOT EDIT
  71 1i\\
  72  */
  73 EOF
  74
  75 cat osdef0.ccc | sed -n -f osdef11.sed >> osdef2.sed
  76 sed -f osdef2.sed < $srcdir/osdef1.h.in > auto/osdef.h
  77
  78 cat osdef0.ccc | sed -n -f osdef21.sed > osdef2.sed
  79 sed -f osdef2.sed < $srcdir/osdef2.h.in >> auto/osdef.h
  80
  81 rm osdef0.c osdef0.cc osdef0.ccc osdef11.sed osdef21.sed osdef2.sed
  82
  83 if test -f core*; then
  84   file core*
  85   echo "  Sorry, your sed is broken. Call the system administrator."
  86   echo "  Meanwhile, you may try to compile Vim with an empty osdef.h file."
  87   echo "  If you compiler complains about missing prototypes, move the needed"
  88   echo "  ones from osdef1.h.in and osdef2.h.in to osdef.h."
  89   exit 1
  90 fi
  91 cat $srcdir/osdef1.h.in $srcdir/osdef2.h.in >osdefX.h.in
  92 if eval test "`diff auto/osdef.h osdefX.h.in | wc -l`" -eq 4; then
  93   echo "  Hmm, sed is very pessimistic about your system header files."
  94   echo "  But it did not dump core -- strange! Let's continue carefully..."
  95   echo "  If this fails, you may want to remove offending lines from osdef.h"
  96   echo "  or try with an empty osdef.h file, if your compiler can do without"
  97   echo "  function declarations."
  98 fi
  99 rm osdefX.h.in