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bcc(1)									bcc(1)

NAME
       bcc - Bruce's C compiler

SYNOPSIS
       bcc  [-03EGNOPSVcegvwxW] [-Aas_option] [-Bexecutable_prefix] [-Ddefine]
       [-Uundef] [-Mc_mode] [-o outfile] [-ansi] [-Ccc1_option] [-Pcpp_option]
       [-Iinclude_dir] [-Lld_option] [-Ttmpdir] [-Qc386_option] [-ttext_segno]
       [ld_options] [infiles]

DESCRIPTION
       Bcc is a simple C compiler that produces 8086  assembler,  in  addition
       compiler	 compile  time	options	 allow	80386  or  6809	 versions. The
       compiler understands traditional K&R C with just the  restriction  that
       bit fields are mapped to one of the other integer types.

       The  default  operation	is  to produce an 8086 executable called a.out
       from the source file.

OPTIONS
       -ansi  Pass the C source through	 unprotoize  after  preprocessing  and
	      before  code  generation.	 This  will  allow  some  ansi C to be
	      compiled but it is definitly NOT a true ansi-C compiler.

       -0     8086 target (works on 80386 host, but not 6809)

       -3     80386 target (may work on 8086 host, but not 6809)

       -A     pass remainder of option to assembler (e.g. -A-l -Alistfile  for
	      a listing)

       -B     prefix for executable search path (as usual; the search order is
	      all paths specified using -B, in order, then the path  given  in
	      the  environment	variable  BCC_EXEC_PREFIX if that is set, then
	      the compiled-in defaults (something like /usr/lib/bcc/  followed
	      by /usr/bin/)

       -C     pass  remainder  of  option  to  bcc-cc1,	 see  code  generation
	      options.

       -D     preprocessor define

       -E     produce preprocessor output to standard out.

       -G     produce GCC objects (Same as -Mg)

       -Ixyz  include search 'xyz' path

       -I     don't add default include to search list

       -Lxyz  add directory name 'xyz' to the head  of	the  list  of  library
	      directories searched

       -L     don't add default library to search list

       -Md    alters  the arguments for all passes to produce MSDOS executable
	      COM files.  These are small model executables,  use  -i  to  get
	      tiny model.

       -Mf    sets  bcc	 to pass the -c and -f arguments to the code generator
	      for smaller faster code. Note this code is not  compatible  with
	      the standard calling conventions so a different version of the C
	      library is linked too.

       -Mc    sets bcc to pass the -c  argument	 to  the  code	generator  for
	      smaller	faster	code.  Note  the  standard  libc  is  normally
	      transparent to this, but there are exceptions.

       -Ms    alters the arguments for all passes  and	selects	 C-library  to
	      produce standalone Linux-86 executables

       -Ml    switches	 to  i386-Linux	 code  generator  and  library.	  This
	      configuration accepts the -z flag to generate QMAGIC a.out files
	      instead of the normal OMAGIC.

       -Mg    switches	to  i386-Linux	code  generator	 and  generates OMAGIC
	      object files that can be	linked	with  some  versions  of  gcc;
	      unfortunatly the most recent versions use 'collect2' to link and
	      this crashes.

       -N     makes the linker produce a native a.out file (Linux  OMAGIC)  if
	      combined with -3 the executable will run under Linux-i386.

       -O     optimize,	 call  copt(1)	to  optimize  8086 code. Specifiers to
	      choose which rules copt should use can be appended to the -O and
	      the option can be repeated.

       -P     produce  preprocessor  output  with  no line numbers to standard
	      output.

       -Q     pass full option to c386 (Only for c386 version)

       -S     produce assembler file

       -T     temporary	 directory  (overrides	previous  value	 and  default;
	      default  is from the environment variable TMPDIR if that is set,
	      otherwise /tmp)

       -U     preprocessor undefine

       -V     print names of files being compiled

       -X     pass remainder of option to linker (e.g. -X-Ofile is  passed  to
	      the linker as -Ofile)

       -c     produce object file

       -f     turn  on	floating  point	 support, no effect with i386, changes
	      libc library with 8086 code.

       -g     produce debugging info (ignored.)

       -o     output file name follows (assembler, object or  executable)  (as
	      usual)

       -p     produce profiling info (ignored.)

       -t1    pass  to	the  assembler to renumber the text segment for multi-
	      segment programs.

       -v     print names and args of subprocesses being  run.	 Two  or  more
	      -v's  print  names  of files being unlinked.  Three or more -v's
	      print names of paths being searched.

       -w     Supress any warning diagnostics.

       -W     Turn on assembler warning messages.

       -x     don't include crt0.o in the link.

       -i     don't pass -i to the linker so that it  will  create  an	impure
	      executable.

       Other  options are passed to the linker, in particular -lx, -M, -m, -s,
       -H.


CODE GENERATOR OPTIONS
       These are all options that the code generator pass bcc-cc1 understands,
       only some will be useful for the -C option of bcc.

       -0     8086 target (works even on 80386 host, not on 6809)

       -3     80386 target (may work even on 8086 host, not on 6809)

       -D     define (as usual)

       -E     produce preprocessor output (as usual)

       -I     include search path (as usual)

       -P     produce preprocessor output with no line numbers (as usual)

       -c     produce code with caller saving regs before function calls

       -d     print debugging information in assembly output

       -f     produce  code with 1st argument passed in a register (AX, EAX or
	      X)

       -l     produce code for 2 3 1 0 long byte order (only works  in	16-bit
	      code),  a special library of compiler helper functions is needed
	      for this mode.

       -o     assembler output file name follows

       -p     produce (almost) position-independent code (only for the 6809)

       -t     print source code in assembly output

       -w     print what cc1 thinks is the location counter in assembly output

       All the options except -D, -I and -o may be turned off by following the
       option  letter  by  a  '-'.  Options are processed left to right so the
       last setting has precedence.

PREPROCESSOR DEFINES
       The preprocessor has a number of manifest constants.

       __BCC__ 1
	      The  compiler  identifier,  normally  used  to  avoid   compiler
	      limitations.

       __FILE__
	      stringized name of current input file

       __LINE__
	      current line number

       __MSDOS__ 1
	      compiler	is  configured	for  generating	 MSDOS	executable COM
	      files.

       __STANDALONE__ 1
	      compiler is configured for generating standalone executables.

       __AS386_16__ 1
	      compiler is generating  16  bit  8086  assembler	and  the  #asm
	      keyword is available for including 8086 code.

       __AS386_32__ 1
	      compiler	is  generating	32  bit	 80386	assembler and the #asm
	      keyword is available for including 80386 code.

       __CALLER_SAVES__ 1
	      compiler calling conventions are altered so the calling function
	      must  save  the  SI and DI registers if they are in use (ESI and
	      EDI on the 80386)

       __FIRST_ARG_IN_AX__ 1
	      compiler calling conventions are altered so the calling function
	      is  passing the first argument to the function in the AX (or EAX
	      ) register.

       __LONG_BIG_ENDIAN__ 1
	      alters the word order of code generated by the 8086 compiler.

       These defines only occur in the 6809 version of the compiler.

       __AS09__ 1
	      compiler is generating 6809 code

       __FIRST_ARG_IN_X__ 1
	      the first argument to functions is passed in the X register.

       __POS_INDEPENDENT__ 1
	      the code generated is (almost) position independent.

ENVIRONMENT
       BCC_EXEC_PREFIX
	      default directory to seach for compiler passes

       TMPDIR directory to place temporary files (default /tmp)

DIRECTORIES
       All the include, library and compiler components are stored  under  the
       /usr/bcc	 directory  under  Linux-i386,	this is laid out the same as a
       /usr filesystem and if bcc is to be the primary compiler on a system it
       should  be  moved  there.  The  configuration  for this is in the bcc.c
       source file only, all other executables are independent of location.

       The library installation also creates the  file	/usr/lib/liberror.txt,
       this path is hardcoded into the C library.

       The bcc executable itself, as86 and ld86 are in /usr/bin.

SEE ALSO
       as86(1), ld86(1), elksemu(1)

BUGS
       The bcc.c compiler driver source is very untidy.

       The  linker,  ld86,  produces  a	 broken a.out object file if given one
       input and the -r option this is so  it  is  compatible  with  pre-dev86
       versions.

				   Nov, 1997				bcc(1)
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