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fteqcc

Langue: en

Version: Juni 26, 2005 (debian - 07/07/09)

Section: 1 (Commandes utilisateur)

NAME

fteqcc - FTE QuakeC compiler

SYNOPSIS

fteqcc [options]

DESCRIPTION

This manual page documents briefly the fteqcc command.

fteqcc is a program that compiles QuakeC sourcecode to binaray game data of Quake1 or QuakeWorld based games.

OPTIONS

--help
Show summary of options.
-Fautoproto
enable automatic prototyping
-Fwasm
dump all assembler code to qc.asm
-Kkeyword, -Kno-keyword
turn language keywords on or off. Keywords available to toggle are: asm, break, case, class, const, continue, default, entity, enum, enumflags, extern, float, for, goto, int, integer, noref, nosave, shared, state, string, struct, switch, thinktime, typedef, union, var and vector.
-O0, -O1, -O2, -O3,
use optimisation level between 0 and 3. With 0, no optimisation takes place, other values include more or less of the options in the section OPTIMISATION.
-src directory
Specify a directory to look for source files (progs.src) in.
-Wall
show all warnings

FORMAT

fteqcc supports several output formats.
-Tstandard, -Tq1, -Tquakec
This is the default setting and generates code compatible with original Quake1.
-Thexen2, -Th2
Outputs Hexen2 compatible code.
-Tkkqwsv, -Tkk7, -Tbigprogs, -Tversion7, -Tkkqwsv
Generates KK Version 7 compatible progs
-Tfte
Generates code specific to FTE Quake.

OPTIMISATION

The following options may be used to fine-tune optimisation. Some of them are activated automatically.
-Oassignments
c = a*b is performed in one operation rather than two, and can cause older decompilers to fail.
-Oshortenifs
if (!a) was traditionally compiled in two statements. This optimisation does it in one, but can cause some decompilers to get confused.
-Ononvec_parms
In the origional qcc, function parameters were specified as a vector store even for floats. This fixes that.
-Oconstant_names
strips out the names of constants from your progs, resulting in smaller files. It makes decompilers leave out names or fabricate numerical ones.
-Oconstant_name_strings
strips out the names of string constants from your progs. This can break addons, so don't use it in those cases.
-Odupconstdefs
merge definitions of constants which are the same value. Pay extra attention to assignment to constant warnings.
-Onouplicatestrings
compact the string table that is stored in the progs. It will be considerably smaller with this.
-Olocals
Strips out local names and definitions. This makes it REALLY hard to decompile
-Ofunction_names
This strips out the names of functions which are never called. Doesn't make much of an impact though.
-Ofilenames
This strips out the filenames of the progs. This can confuse the really old decompilers, but is nothing to the more recent ones.
-Ounreferenced
Removes the entries of unreferenced variables. Doesn't make a difference in well maintained code.
-Ooverlaptemps
Optimises the pr_globals count by overlapping temporaries. In QC, every multiplication, division or operation in general produces a temporary variable. This optimisation prevents excess, and in the case of Hexen2's gamecode, reduces the count by 50k. This is the most important optimisation, ever.
-Oconstantarithmatic
5*6 actually emits an operation into the progs. This prevents that happening, effectivly making the compiler see 30
-Oprecache_file
Strip out stuff wasted used in function calls and strings to the precache_file builtin (which is actually a stub in quake).
-Oreturn_only
Functions ending in a return statement do not need a done statement at the end of the function. This can confuse some decompilers, making functions appear larger than they were.
-Ocompound_jumps
This optimisation plays an effect mostly with nested if/else statements, instead of jumping to an unconditional jump statement, it'll jump to the final destination instead. This will bewilder decompilers.
-Ostrip_functions
Strips out the 'defs' of functions that were only ever called directly. This does not affect saved games.
-Olocals_marshalling
Store all locals in one section of the pr_globals. Vastly reducing it. This effectivly does the job of overlaptemps. It's been noticed as buggy by a few, however, and the curcumstances where it causes problems are not yet known.
-Ovectorcals
Where a function is called with just a vector, this causes the function call to store three floats instead of one vector. This can save a good number of pr_globals where those vectors contain many duplicate coordinates but do not match entirly.

AUTHOR

fteqcc was written by David Walton <acceptthis@users.sourceforge.net> and J. Smith <timeserv@users.sourceforge.net>.

This manual page was written by René van Bevern <rvb@debian.org>, for the Debian project (but may be used by others). Most information was obtained from comments in the source codes.

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