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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)