- -a
-
Build a library (.cmxa/.a file) with the object files (.cmx/.o
files) given on the command line, instead of linking them into an
executable file. The name of the library can be set with the -o
option. The default name is library.cmxa.
If -cclib or -ccopt options are passed on the command
line, these options are stored in the resulting .cmxa library. Then,
linking with this library automatically adds back the
-cclib and -ccopt options as if they had been provided on the
command line, unless the -noautolink option is given.
- -c
-
Compile only. Suppress the linking phase of the
compilation. Source code files are turned into compiled files, but no
executable file is produced. This option is useful to
compile modules separately.
- -cc ccomp
-
Use ccomp as the C linker called to build the final executable
and as the C compiler for compiling .c source files.
- -cclib -llibname
-
Pass the -llibname option to the linker. This causes the given
C library to be linked with the program.
- -ccopt option
-
Pass the given option to the C compiler and linker. For instance,
-ccopt -Ldir causes the C linker to search for C libraries in
directory dir.
- -compact
-
Optimize the produced code for space rather than for time. This
results in slightly smaller but slightly slower programs. The default is to
optimize for speed.
- -i
-
Cause the compiler to print all defined names (with their inferred
types or their definitions) when compiling an implementation (.ml
file). This can be useful to check the types inferred by the
compiler. Also, since the output follows the syntax of interfaces, it
can help in writing an explicit interface (.mli file) for a file:
just redirect the standard output of the compiler to a .mli file,
and edit that file to remove all declarations of unexported names.
- -I directory
-
Add the given directory to the list of directories searched for
compiled interface files (.cmi), compiled object code files
(.cmx), and libraries (.cmxa). By default, the current directory
is searched first, then the standard library directory. Directories
added with -I are searched after the current directory, in the order
in which they were given on the command line, but before the standard
library directory.
If the given directory starts with +, it is taken relative to the
standard library directory. For instance, -I +labltk adds the
subdirectory labltk of the standard library to the search path.
- -inline n
-
Set aggressiveness of inlining to n, where n is a positive
integer. Specifying -inline 0 prevents all functions from being
inlined, except those whose body is smaller than the call site. Thus,
inlining causes no expansion in code size. The default aggressiveness,
-inline 1, allows slightly larger functions to be inlined, resulting
in a slight expansion in code size. Higher values for the -inline
option cause larger and larger functions to become candidate for
inlining, but can result in a serious increase in code size.
- -linkall
-
Forces all modules contained in libraries to be linked in. If this
flag is not given, unreferenced modules are not linked in. When
building a library (-a flag), setting the -linkall flag forces all
subsequent links of programs involving that library to link all the
modules contained in the library.
- -noassert
-
Turn assertion checking off: assertions are not compiled.
This flag has no effect when linking already compiled files.
- -noautolink
-
When linking .cmxa libraries, ignore -cclib and -ccopt
options potentially contained in the libraries (if these options were
given when building the libraries). This can be useful if a library
contains incorrect specifications of C libraries or C options; in this
case, during linking, set -noautolink and pass the correct C
libraries and options on the command line.
-
-nolabels
-
Ignore non-optional labels in types. Labels cannot be used in
applications, and parameter order becomes strict.
- -o exec-file
-
Specify the name of the output file produced by the linker. The
default output name is a.out, in keeping with the Unix tradition. If
the -a option is given, specify the name of the library produced.
If the -output-obj option is given, specify the name of the output
file produced.
- -output-obj
-
Cause the linker to produce a C object file instead of an executable
file. This is useful to wrap Caml code as a C library,
callable from any C program. See chapter 18,
section 18.7.5. The name of the output object file is
camlprog.o by default; it can be set with the -o option.
- -p
-
Generate extra code to write profile information when the program is
executed. The profile information can then be examined with the
analysis program gprof. (See chapter 17 for more
information on profiling.) The -p option must be given both at
compile-time and at link-time. Linking object files not compiled with
-p is possible, but results in less precise profiling.
Unix:
See the Unix manual page for gprof(1) for more
information about the profiles.
Full support for gprof is only available for certain platforms
(currently: Intel x86/Linux and Alpha/Digital Unix).
On other platforms, the -p option will result in a less precise
profile (no call graph information, only a time profile).
Windows:
The -p option does not work under Windows.
-
-pack
-
Build an object file (.cmx/.o file) and its associated compiled
interface (.cmi) that combines the .cmx object
files given on the command line, making them appear as sub-modules of
the output .cmx file. The name of the output .cmx file must be
given with the -o option. For instance,
ocamlopt -pack -o p.cmx a.cmx b.cmx c.cmx
generates compiled files p.cmx, p.o and p.cmi describing a
compilation unit having three sub-modules A, B and C,
corresponding to the contents of the object files a.cmx, b.cmx and
c.cmx. These contents can be referenced as P.A, P.B and P.C
in the remainder of the program.
Unix:
The -pack option is available only under platforms that
provide the GNU binutils tools nm and objcopy.
- -pp command
-
Cause the compiler to call the given command as a preprocessor
for each source file. The output of command is redirected to
an intermediate file, which is compiled. If there are no compilation
errors, the intermediate file is deleted afterwards. The name of this
file is built from the basename of the source file with the extension
.ppi for an interface (.mli) file and .ppo for an implementation
(.ml) file.
-
-principal
-
Check information path during type-checking, to make sure that all
types are derived in a principal way. All programs accepted in
-principal mode are also accepted in default mode with equivalent
types, but different binary signatures.
- -rectypes
-
Allow arbitrary recursive types during type-checking. By default,
only recursive types where the recursion goes through an object type
are supported.
- -S
-
Keep the assembly code produced during the compilation. The assembly
code for the source file x.ml is saved in the file x.s.
- -thread
-
Compile or link multithreaded programs, in combination with the
threads library described in chapter 24. What this
option actually does is select a special, thread-safe version of the
standard library.
- -unsafe
-
Turn bound checking off on array and string accesses (the v.(i) and
s.[i] constructs). Programs compiled with -unsafe are therefore
faster, but unsafe: anything can happen if the program accesses an
array or string outside of its bounds.
- -v
-
Print the version number of the compiler
and the location of the
standard library directory, then exit.
-
-verbose
-
Print all external commands before they are executed, in particular
invocations of the assembler, C compiler, and linker.
-
-version
-
Print the version number of the compiler in short form (e.g. 3.06),
then exit.
- -w warning-list
-
Enable or disable warnings according to the argument
warning-list. The argument is a string of one or several
characters, with the following meaning for each character:
-
A/a
- enable/disable all warnings.
-
C/c
-
enable/disable warnings for suspicious comments.
-
D/d
-
enable/disable warnings for deprecated features.
- F/f
- enable/disable warnings for partially applied functions
(i.e. f x; expr where the application f x has a function type).
-
L/l
-
enable/disable warnings for labels omitted in application.
- M/m
- enable/disable warnings for overriden methods.
- P/p
- enable/disable warnings for partial matches (missing cases
in pattern matchings).
- S/s
- enable/disable warnings for statements that do not have
type unit (e.g. expr1; expr2 when expr1 does not
have type unit).
- U/u
- enable/disable warnings for unused (redundant) match cases.
- V/v
- enable/disable warnings for hidden instance variables.
- X/x
- enable/disable all other warnings.
The default setting is -w Al (all warnings but labels enabled).
- -warn-error warning-list
-
Turn the warnings indicated in the argument warning-list into
errors. The compiler will stop on an error as soon as one of these
warnings is emitted, instead of going on. The warning-list
is a string of one or several characters, with the same meaning as for
the -w option: an uppercase character turns the corresponding
warning into an error, a lowercase character leaves it as a warning.
The default setting is -warn-error a (all warnings are not treated
as errors).
- -where
-
Print the location of the standard library.