bcc(1)							      General Commands Manual							    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/lib/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)