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Dependency generator (ocamldep)
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<TITLE>Dependency generator (ocamldep)</TITLE>
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<H1 CLASS="chapter"><A NAME="htoc146">Chapter 13</A> Dependency generator (ocamldep)</H1> <A NAME="c:camldep"></A>
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The <TT>ocamldep</TT> command scans a set of Objective Caml source files
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<H1 CLASS="chapter"><A NAME="htoc146">Chapter�13</A>��Dependency generator (ocamldep)</H1><P> <A NAME="c:camldep"></A>
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</P><P>The <TT>ocamldep</TT> command scans a set of Objective Caml source files
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(<TT>.ml</TT> and <TT>.mli</TT> files) for references to external compilation units,
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and outputs dependency lines in a format suitable for the <TT>make</TT>
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utility. This ensures that <TT>make</TT> will compile the source files in the
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correct order, and recompile those files that need to when a source
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file is modified.</P><P>The typical usage is:
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ocamldep <I>options</I> *.mli *.ml > .depend
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where <TT>*.mli *.ml</TT> expands to all source files in the current
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directory and <TT>.depend</TT> is the file that should contain the
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dependencies. (See below for a typical <TT>Makefile</TT>.)<BR>
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Dependencies are generated both for compiling with the bytecode
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compiler <TT>ocamlc</TT> and with the native-code compiler <TT>ocamlopt</TT>.<BR>
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<H2 CLASS="section"><A NAME="htoc147">13.1</A> Options</H2>
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The following command-line option is recognized by <TT>ocamldep</TT>.
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<DL CLASS="description" COMPACT=compact><DT CLASS="dt-description"><B><TT>-I</TT> <I>directory</I></B><DD CLASS="dd-description">
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dependencies. (See below for a typical <TT>Makefile</TT>.)</P><P>Dependencies are generated both for compiling with the bytecode
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compiler <TT>ocamlc</TT> and with the native-code compiler <TT>ocamlopt</TT>.</P><H2 CLASS="section"><A NAME="htoc147">13.1</A>��Options</H2><P>The following command-line option is recognized by <TT>ocamldep</TT>.</P><DL CLASS="description"><DT CLASS="dt-description"><B><TT>-I</TT> <I>directory</I></B></DT><DD CLASS="dd-description">
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Add the given directory to the list of directories searched for
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source files. If a source file <TT>foo.ml</TT> mentions an external
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compilation unit <TT>Bar</TT>, a dependency on that unit's interface
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Otherwise, <TT>Bar</TT> is assumed to be a module from the standard library,
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and no dependencies are generated. For programs that span multiple
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directories, it is recommended to pass <TT>ocamldep</TT> the same <TT>-I</TT> options
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that are passed to the compiler.<BR>
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<DT CLASS="dt-description"><TT><B>-native</B></TT><DD CLASS="dd-description">
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that are passed to the compiler.</DD><DT CLASS="dt-description"><TT><B>-native</B></TT></DT><DD CLASS="dd-description">
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Generate dependencies for a pure native-code program (no bytecode
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version). When an implementation file (<TT>.ml</TT> file) has no explicit
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interface file (<TT>.mli</TT> file), <TT>ocamldep</TT> generates dependencies on the
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are compiled to native-code only. The flag <TT>-native</TT> causes
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dependencies on native compiled files (<TT>.cmx</TT>) to be generated instead
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of on <TT>.cmo</TT> files. (This flag makes no difference if all source files
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have explicit <TT>.mli</TT> interface files.)<BR>
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<DT CLASS="dt-description" style="background-color:yellow; color:red"><TT><B>-version</B></TT><DD CLASS="dd-description" style="background-color:yellow; color:red">
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Print version and exit.</DL>
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<H2 CLASS="section"><A NAME="htoc148">13.2</A> A typical Makefile</H2>
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Here is a template <TT>Makefile</TT> for a Objective Caml program.
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<PRE CLASS="verbatim">
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have explicit <TT>.mli</TT> interface files.)</DD><DT CLASS="dt-description"><TT><B>-version</B></TT></DT><DD CLASS="dd-description">
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Print version and exit.</DD></DL><H2 CLASS="section"><A NAME="htoc148">13.2</A>��A typical Makefile</H2><P>Here is a template <TT>Makefile</TT> for a Objective Caml program.</P><PRE CLASS="verbatim">OCAMLC=ocamlc
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INCLUDES= # all relevant -I options here
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$(OCAMLDEP) $(INCLUDES) *.mli *.ml > .depend
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