bcc
(1)
名称
bcc - Bruce's C compiler
用法概要
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]
描述
User Commands 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
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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
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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)
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-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
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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.
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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.
ATTRIBUTES
See attributes(5) for descriptions of the following
attributes:
+---------------+------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+------------------+
|Availability | developer/bcc |
+---------------+------------------+
|Stability | Uncommitted |
+---------------+------------------+
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.
NOTES
This software was built from source available at
https://java.net/projects/solaris-userland. The original
community source was downloaded from
http://homepage.ntlworld.com/robert.debath/dev86/Dev86src-0.16.17.tar.gz
Further information about this software can be found on the
open source community website at
http://homepage.ntlworld.com/robert.debath/dev86/.
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