Provided by: bcc_0.16.17-3.3_amd64 bug


       bcc - Bruce's C compiler


       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]


       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.


       -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

       -c     produce object file

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

       -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.


       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.


       The preprocessor has a number of manifest constants.

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

              stringized name of current input file

              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.


              default directory to seach for compiler passes

       TMPDIR directory to place temporary files (default /tmp)


       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.


       as86(1), ld86(1), elksemu(1)


       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)