diff options
Diffstat (limited to 'man/bcc.1')
| -rw-r--r-- | man/bcc.1 | 322 |
1 files changed, 322 insertions, 0 deletions
diff --git a/man/bcc.1 b/man/bcc.1 new file mode 100644 index 0000000..7f6097f --- /dev/null +++ b/man/bcc.1 @@ -0,0 +1,322 @@ +.TH bcc 1 "Oct, 1996" +.BY Bruce Evans +.nh +.SH NAME +bcc \- Bruce's C compiler +.SH SYNOPSIS +.B bcc +.RB [ -03EGNOPSVcegv ] +.RB [ -Aas_option ] +.RB [ -Bexecutable_prefix ] +.RB [ -Ddefine ] +.RB [ -Uundef ] +.RB [ -Mc_mode ] +.RB [ -o\ outfile ] +.RB [ -ansi ] +.RB [ -Ccc1_option ] +.RB [ -Iinclude_dir ] +.RB [ -Lld_option ] +.RB [ -Ttmpdir ] +.RB [ -Qc386_option ] +.RB [ ld_options ] +.RB [ infiles ] +.SH DESCRIPTION +.B 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 +.B a.out +from the source file. + +.SH OPTIONS +.TP +.B -ansi +Pass the C source through +.B unprotoize(1) +after preprocessing and before code generation. This will allow +.I some +ansi C to be compiled but it is definitly +.B NOT +a true ansi-C compiler. +.TP +.B -0 +8086 target (works on 80386 host, but not 6809) +.TP +.B -3 +80386 target (may work on 8086 host, but not 6809) +.TP +.B -A +pass remainder of option to assembler (e.g. -A-l -Alistfile for a listing) +.TP +.B -B +prefix for executable search path (as usual; the search order is all paths +specified using +.BR -B , +in order, then the path given in the environment variable +.B BCC_EXEC_PREFIX +if that is set, then the compiled-in defaults +(something like /usr/lib/bcc/ followed by /usr/bin/) +.TP +.B -C +pass remainder of option to bcc-cc1, see code generation options. +.TP +.B -D +preprocessor define +.TP +.B -E +produce preprocessor output to standard out. +.TP +.B -G +produce GCC objects (only useful for i386 code) +.TP +.B -Ixyz +include search 'xyz' path +.TP +.B -I +don't add default include to search list +.TP +.B -Lxyz +add directory name 'xyz' to the head of the list of library directories searched +.TP +.B -L +don't add default library to search list +.TP +.B -Md +alters the arguments for all passes to produce MSDOS executable COM files. +.TP +.B -Mf +sets the code generator to pass the +.B -c +and +.B -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. +.TP +.B -Ms +alters the arguments for all passes and selects C-library +to produce standalone Linux-86 executables +.TP +.B -N +makes the linker produce a native a.out file (Linux OMAGIC) if combined +with -3 the executable will run under Linux-i386. +.TP +.B -O +optimize (does nothing) +.TP +.B -P +produce preprocessor output with no line numbers to standard output. +.TP +.B -Q +pass full option to c386 (Only for c386 version) +.TP +.B -S +produce assembler file +.TP +.B -T +temporary directory (overrides previous value and default; default is +from the environment variable TMPDIR if that is set, otherwise /tmp) +.TP +.B -U +preprocessor undefine +.TP +.B -V +print names of files being compiled +.TP +.B -X +pass remainder of option to linker (e.g. -X-Ofile is passed to the linker +as -Ofile) +.TP +.B -c +produce object file +.TP +.B -e +run the preprocess pass separately. This takes less memory, and may help +or harm by giving more traditional semantics like token pasting with /**/. +.TP +.B -f +error (float emulation not supported) +.TP +.B -g +produce debugging info (does nothing) +.TP +.B -o +output file name follows (assembler, object or executable) (as usual) +.TP +.B -p +error (profiling not supported) +.TP +.B -t +error (substitution of some cc passes not supported) +.TP +.B -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. +.P +Other options are passed to the linker, in particular -i-, -lx, -M, -m, -s. +The -i option is always passed to the linker but can be cancelled using -i-. + +.SH CODE GENERATOR OPTIONS +These are all options that the code generator pass +.B bcc-cc1 +understands, only some will be useful for the +.B -C +option of bcc. The code generator is normally used as a combined C preprocessor +and generator but the +.B -e +and +.B -ansi +options of bcc split the operation. +.TP +.B -0 +8086 target (works even on 80386 host, not on 6809) +.TP +.B -3 +80386 target (may work even on 8086 host, not on 6809) +.TP +.B -D +define (as usual) +.TP +.B -E +produce preprocessor output (as usual) +.TP +.B -I +include search path (as usual) +.TP +.B -P +produce preprocessor output with no line numbers (as usual) +.TP +.B -c +produce code with caller saving regs before function calls +.TP +.B -d +print debugging information in assembly output +.TP +.B -f +produce code with 1st argument passed in a register (AX, EAX or X) +.TP +.B -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. +.TP +.B -o +assembler output file name follows +.TP +.B -p +produce (almost) position-independent code (only for the 6809) +.TP +.B -t +print source code in assembly output +.TP +.B -w +print what cc1 thinks is the location counter in assembly output +.P +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. + +.SH PREPROCESSOR DEFINES +The preprocessor has a number of manifest constants. +.TP +.B __BCC__ 1 +The compiler identifier, normally used to avoid compiler limitations. +.TP +.B __FILE__ +stringized name of current input file +.TP +.B __LINE__ +current line number +.TP +.B __MSDOS__ 1 +compiler is configured for generating MSDOS executable COM files. +.TP +.B __STANDALONE__ 1 +compiler is configured for generating standalone executables. +.TP +.B __AS386_16__ 1 +compiler is generating 16 bit 8086 assembler and the +.B #asm +keyword is available for including 8086 code. +.TP +.B __AS386_32__ 1 +compiler is generating 32 bit 80386 assembler and the +.B #asm +keyword is available for including 80386 code. +.TP +.B __CALLER_SAVES__ 1 +compiler calling conventions are altered so the calling function must save the +.I SI +and +.I DI +registers if they are in use (ESI and EDI on the 80386) +.TP +.B __FIRST_ARG_IN_AX__ 1 +compiler calling conventions are altered so the calling function is passing +the first argument to the function in the +.I AX +(or +.I EAX +) +register. +.TP +.B __LONG_BIG_ENDIAN__ 1 +alters the word order of code generated by the 8086 compiler. +.P +These defines only occur in the 6809 version of the compiler. +.TP +.B __AS09__ 1 +compiler is generating 6809 code +.TP +.B __FIRST_ARG_IN_X__ 1 +the first argument to functions is passed in the +.I X +register. +.TP +.B __POS_INDEPENDENT__ 1 +the code generated is (almost) position independent. +.P +.SH ENVIRONMENT +.TP +.B BCC_EXEC_PREFIX +default directory to seach for compiler passes +.TP +.B TMPDIR +directory to place temporary files (default /tmp) +.P +.SH DIRECTORIES +All the include, library and compiler components are stored under the +.I /usr/bcc +directory under Linux-86, this is laid out the same as a +.I /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 +.B bcc.c +source file only, all other executables are independent of location. + +The library installation also creates the file +.BR /usr/lib/liberror.txt , +this path is hardcoded into the C library. + +The +.B bcc +executable itself is in /usr/bin and the +.B as86 +and +.B ld86 +executables can be placed there also, but be aware that some programs +will require the old operation of the +.B -r +argument to ld86 (eg compiling DOSEMU) + +.SH SEE ALSO +unprotoize(1), as86(1), ld86(1), elksemu(1) +.SH BUGS +The compiler cannot generate 8086 floating point code, if it's made to +try it produces a nasty mixture of 8086 and 80386 code that really +upsets the assembler. + +The bcc.c compiler driver source is very untidy. |