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>Chapter 4. A new frontend for ocamlc</H1
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><B
>Table of Contents</B
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><DT
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>Compiling and linking</A
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><H1
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><A
NAME="AEN194"
>Compiling and linking</A
></H1
><P
>There are compiler frontends for the four compilers ocamlc, ocamlopt,
ocamlmktop, and ocamlcp. They are simply called by specifying the name
of the compiler as first argument to ocamlfind, i.e.</P
><PRE
CLASS="PROGRAMLISTING"
>ocamlfind ocamlc ...arguments...
ocamlfind ocamlopt ...arguments...
ocamlfind ocamlmktop ...arguments...
ocamlfind ocamlcp ...arguments...</PRE
><P
>In addition to the compiler options handled by the compilers
themselves, the following options are available:</P
><P
></P
><UL
COMPACT="COMPACT"
><LI
STYLE="list-style-type: disc"
><P
>-package <name>: Causes that the package <name> is added to
the package list, and that -I options are added for every package, and
all direct or indirect ancestors.</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>-linkpkg: Causes that the archives of the packages in the package list
and all their direct or indirect ancestors are added in topological
order to the command line before the first file to compile or to
link. Packages specified by -dontlink are not linked in, though.
Furthermore, the linker options of these packages are added in
reverse topological order at the end of the command line.</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>-predicates <predicate-list>: The named predicates are included
in the list of predicates. Note that there are some predicates set by
default, see below.</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>-dontlink <name>: Specifies that the package <name> and
all its direct or indirect ancestors should not be linked in.</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>-passopt <opt>: The option <opt> is passed directly to the
underlying compiler. This is especially needed to pass undocumented
options to the compiler.</P
></LI
></UL
><P
>If you only want to compile, i.e. the -c option is in effect, you
normally only need the -package option.</P
><P
>Depending on the compiler and on the given options, some predicates
are set by default:</P
><P
></P
><UL
COMPACT="COMPACT"
><LI
STYLE="list-style-type: disc"
><P
>byte: The predicate "byte" is set when ocamlc, ocamlcp, or ocamlmktop
is used to compile or link.</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>native: The predicate "native" is set when ocamlopt is used to compile
or to link.</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>toploop: The predicate "toploop" is set when a toploop is being executed</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>create_toploop: The predicate "toploop" is set when ocamlmktop is used to
compile or to link a toploop</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>gprof: The predicate "gprof" is set when ocamlopt with -p option is
invoked.</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>mt: The predicate "mt" is set when the -thread or the -vmthread option is in effect.</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>mt_posix: The predicate "mt_posix" is set together with "mt" if the
POSIX thread implementation is selected.</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>mt_vm: The predicate "mt_vm" is set together with "mt" if the bytecode
thread implementation is selected.</P
></LI
><LI
STYLE="list-style-type: disc"
><P
>autolink: The predicate "autolink" is set if the OCaml compiler can perform
automatic linking. This predicate is never set if the -noautolink option is
in effect.</P
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