GNU/Linux man pages

Livre :
Expressions régulières,
Syntaxe et mise en oeuvre :

ISBN : 978-2-7460-9712-4
EAN : 9782746097124
(Editions ENI)


CentOS 2.1AS







bcc − Bruce’s C compiler


bcc [-03EGNOPSVcegvwxW] [-Aas_option] [-Bexecutable_prefix] [-Ddefine] [-Uundef] [-Mc_mode] [-o outfile] [-ansi] [-Ccc1_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.



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.


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


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


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


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/)


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


preprocessor define


produce preprocessor output to standard out.


produce GCC objects (only useful for i386 code)


include search ’xyz’ path


don’t add default include to search list


add directory name ’xyz’ to the head of the list of library directories searched


don’t add default library to search list


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


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.


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.


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


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.


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


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.


produce preprocessor output with no line numbers to standard output.


pass full option to c386 (Only for c386 version)


produce assembler file


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


preprocessor undefine


print names of files being compiled


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


produce object file


run the preprocess pass separately. This takes less memory, and may help or harm by giving more traditional semantics like token pasting with /**/.


error (float emulation not supported)


produce debugging info (does nothing)


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


error (profiling not supported)


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


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.


Supress any warning diagnostics.


Turn on assembler warning messages.


don’t include crt0.o in the link.

Other options are passed to the linker, in particular -i-, -lx, -M, -m, -s, -H. The -i option is always passed to the linker but can be cancelled using -i-.


These are all options that the code generator pass bcc-cc1 understands, only some will be useful for the -C option of bcc. The code generator is normally used as a combined C preprocessor and generator but the -e and -ansi options of bcc split the operation.


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


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


define (as usual)


produce preprocessor output (as usual)


include search path (as usual)


produce preprocessor output with no line numbers (as usual)


produce code with caller saving regs before function calls


print debugging information in assembly output


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


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.


assembler output file name follows


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


print source code in assembly output


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.


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.


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)


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


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


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


the code generated is (almost) position independent.



default directory to seach for compiler passes


directory to place temporary files (default /tmp)


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.


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.