1 <!doctype linuxdoc system>
4 <title>cl65 Users Guide
5 <author><url url="mailto:uz@cc65.org" name="Ullrich von Bassewitz">
6 <date>01.08.2000, 27.11.2000, 02.10.2001
9 cl65 is the compile & link utility for cc65, the 6502 C compiler. It was
10 designed as a smart frontend for the C compiler (cc65), the assembler (ca65),
11 the object file converter (co65), and the linker (ld65).
14 <!-- Table of contents -->
17 <!-- Begin the document -->
21 cl65 is a frontend for cc65, ca65, co65 and ld65. While you may not use the
22 full power of the tools when calling them through cl65, most features are
23 available, and the use of cl65 is much simpler.
28 The cl65 compile and link utility may be used to convert, compile, assemble
29 and link files. While the separate tools do just one step, cl65 knows how to
30 build object files from C files (by calling the compiler, then the assembler)
34 ---------------------------------------------------------------------------
35 Usage: cl65 [options] file [...]
37 -c Compile and assemble but don't link
41 -l name Create an assembler listing file
42 -m name Create a map file
43 -mm model Set the memory model
44 -o name Name the output file
45 -r Enable register variables
46 -t sys Set the target system
47 -u sym Force an import of symbol `sym'
50 -C name Use linker config file
51 -Cl Make local variables static
52 -D sym[=defn] Define a preprocessor symbol
53 -I dir Set a compiler include directory path
54 -L path Specify a library search path
55 -Ln name Create a VICE label file
57 -Oi Optimize code, inline functions
58 -Or Optimize code, honour the register keyword
59 -Os Optimize code, inline known C funtions
60 -S Compile but don't assemble and link
61 -T Include source as comment
62 -V Print the version number
63 -W name[,...] Supress compiler warnings
64 -Wa options Pass options to the assembler
65 -Wl options Pass options to the linker
68 --add-source Include source as comment
69 --asm-args options Pass options to the assembler
70 --asm-define sym[=v] Define an assembler symbol
71 --asm-include-dir dir Set an assembler include directory
72 --bin-include-dir dir Set an assembler binary include directory
73 --bss-label name Define and export a BSS segment label
74 --bss-name seg Set the name of the BSS segment
75 --cc-args options Pass options to the compiler
76 --cfg-path path Specify a config file search path
77 --check-stack Generate stack overflow checks
78 --code-label name Define and export a CODE segment label
79 --code-name seg Set the name of the CODE segment
80 --codesize x Accept larger code by factor x
81 --config name Use linker config file
82 --cpu type Set cpu type
83 --create-dep name Create a make dependency file
84 --create-full-dep name Create a full make dependency file
85 --data-label name Define and export a DATA segment label
86 --data-name seg Set the name of the DATA segment
88 --debug-info Add debug info
89 --feature name Set an emulation feature
90 --force-import sym Force an import of symbol `sym'
91 --help Help (this text)
92 --include-dir dir Set a compiler include directory path
93 --ld-args options Pass options to the linker
94 --lib file Link this library
95 --lib-path path Specify a library search path
96 --list-targets List all available targets
97 --listing name Create an assembler listing file
98 --list-bytes n Number of bytes per assembler listing line
99 --mapfile name Create a map file
100 --memory-model model Set the memory model
101 --module Link as a module
102 --module-id id Specify a module id for the linker
103 --o65-model model Override the o65 model
104 --obj file Link this object file
105 --obj-path path Specify an object file search path
106 --print-target-path Print the target file path
107 --register-space b Set space available for register variables
108 --register-vars Enable register variables
109 --rodata-name seg Set the name of the RODATA segment
110 --signed-chars Default characters are signed
111 --standard std Language standard (c89, c99, cc65)
112 --start-addr addr Set the default start address
113 --static-locals Make local variables static
114 --target sys Set the target system
115 --version Print the version number
116 --verbose Verbose mode
117 --zeropage-label name Define and export a ZEROPAGE segment label
118 --zeropage-name seg Set the name of the ZEROPAGE segment
119 ---------------------------------------------------------------------------
122 Most of the options have the same meaning than the corresponding compiler,
123 assembler or linker option. See the documentation for these tools for an
124 explanation. If an option is available for more than one of the tools, it
125 is set for all tools, where it is available. One example for this is <tt/-v/:
126 The compiler, the assembler and the linker are all called with the <tt/-v/
129 There are a few remaining options that control the behaviour of cl65:
133 <tag><tt>-S</tt></tag>
135 This option forces cl65 to stop after the assembly step. This means that
136 C files are translated into assembler files, but nothing more is done.
137 Assembler files, object files and libraries given on the command line
141 <tag><tt>-c</tt></tag>
143 This options forces cl65 to stop after the assembly step. This means
144 that C and assembler files given on the command line are translated into
145 object files, but there is no link step, and object files and libraries
146 given on the command line are ignored.
149 <tag><tt>-o name</tt></tag>
151 The -o option is used for the target name in the final step. This causes
152 problems, if the linker will not be called, and there are several input
153 files on the command line. In this case, the name given with -o will be
154 used for all of them, which makes the option pretty useless. You
155 shouldn't use -o when more than one output file is created.
158 <tag><tt>--print-target-path</tt></tag>
160 This option prints the absolute path of the target file directory and exits
161 then. It is supposed to be used with shell backquotes or the GNU make shell
162 function This way you can write build scripts or Makefiles accessing target
163 files without any assumption about the cc65 installation path.
166 <tag><tt>-t sys, --target sys</tt></tag>
168 The default for this option is different from the compiler and linker in the
169 case that the option is missing: While the other tools (compiler, assembler
170 and linker) will use the "none" system settings by default, cl65 will use
171 the C64 as a target system by default. This was chosen since most people
172 seem to use cc65 to develop for the C64.
175 <tag><tt>-Wa options, --asm-args options</tt></tag>
177 Pass options directly to the assembler. This may be used to pass options
178 that aren't directly supported by cl65. Several options may be separated by
179 commas, the commas are replaced by spaces when passing them to the
180 assembler. Beware: Passing arguments directly to the assembler may interfere
181 with some of the defaults, because cl65 doesn't parse the options passed. So
182 if cl65 supports an option by itself, do not pass this option to the
183 assembler by means of the <tt/-Wa/ switch.
186 <tag><tt>-Wc options, --cc-args options</tt></tag>
188 Pass options directly to the compiler. This may be used to pass options
189 that aren't directly supported by cl65. Several options may be separated by
190 commas, the commas are replaced by spaces when passing them to the
191 compiler. Beware: Passing arguments directly to the compiler may interfere
192 with some of the defaults, because cl65 doesn't parse the options passed. So
193 if cl65 supports an option by itself, do not pass this option to the
194 compiler by means of the <tt/-Wc/ switch.
197 <tag><tt>-Wl options, --ld-args options</tt></tag>
199 Pass options directly to the linker. This may be used to pass options that
200 aren't directly supported by cl65. Several options may be separated by
201 commas, the commas are replaced by spaces when passing them to the linker.
202 Beware: Passing arguments directly to the linker may interfere with some of
203 the defaults, because cl65 doesn't parse the options passed. So if cl65
204 supports an option by itself, do not pass this option to the linker by means
205 of the <tt/-Wl/ switch.
213 Since cl65 was created to simplify the use of the cc65 development
214 package, it tries to be smart about several things.
218 <item> If you don't give a target system on the command line, cl65
221 <item> When linking, cl65 will supply the names of the startup file and
222 library for the target system to the linker, so you don't have to do
225 <item> If the final step is the linker, and the name of the output file was
226 not explicitly given, cl65 will use the name of the first input file
227 without the extension, provided that the name of this file has an
228 extension. So you don't need to name the executable name in most
229 cases, just give the name of your "main" file as first input file.
232 The command line is parsed from left to right, and the actual processing tool
233 (compiler, assembler, ...) is invoked whenever a file name is encountered.
234 This means that only the options to the left of a file name are in effect when
235 this file is processed. It does also mean that you're able to specify
236 different options for different files on the command line. As an example.
239 cl65 -Oirs main.c -O -g module.c
242 translates main.c with full optimization and module.c with less optimization
243 and debug info enabled.
245 The type of an input file is derived from its extension:
248 <item>C files: <tt/.c/
249 <item>Assembler files: <tt/.s/, <tt/.asm/, <tt/.a65/
250 <item>Object files: <tt/.o/ <tt/.obj/
251 <item>Libraries: <tt/.a/, <tt/.lib/
252 <item>GEOS resource files: <tt/.grc/
253 <item>o65 files: <tt/.o65/, <tt/.emd/, <tt/.joy/, <tt/.tgi/
256 Please note that the program cannot handle input files with unknown file
262 The morse trainer software, which consists of one C file (morse.c) and one
263 assembler file (irq.s) will need the following separate steps to compile
264 into an executable named morse:
267 cc65 -g -Oi -t c64 morse.c
270 ld65 -o morse -t c64 c64.o morse.o irq.o c64.lib
273 When using cl65, this is simplified to
276 cl65 -g -Oi morse.c irq.s
279 As a general rule, you may use cl65 instead of cc65 at most times,
280 especially in makefiles to build object files directly from C files. Use
293 cl65 (and all cc65 binutils) are (C) Copyright 1998-2004 Ullrich von
294 Bassewitz. For usage of the binaries and/or sources the following
297 This software is provided 'as-is', without any expressed or implied
298 warranty. In no event will the authors be held liable for any damages
299 arising from the use of this software.
301 Permission is granted to anyone to use this software for any purpose,
302 including commercial applications, and to alter it and redistribute it
303 freely, subject to the following restrictions:
306 <item> The origin of this software must not be misrepresented; you must not
307 claim that you wrote the original software. If you use this software
308 in a product, an acknowledgment in the product documentation would be
309 appreciated but is not required.
310 <item> Altered source versions must be plainly marked as such, and must not
311 be misrepresented as being the original software.
312 <item> This notice may not be removed or altered from any source