diff options
Diffstat (limited to 'lib/compiler/doc/src')
| -rw-r--r-- | lib/compiler/doc/src/compile.xml | 76 | ||||
| -rw-r--r-- | lib/compiler/doc/src/notes.xml | 165 |
2 files changed, 237 insertions, 4 deletions
diff --git a/lib/compiler/doc/src/compile.xml b/lib/compiler/doc/src/compile.xml index e1f24b602d..f2af932aef 100644 --- a/lib/compiler/doc/src/compile.xml +++ b/lib/compiler/doc/src/compile.xml @@ -4,7 +4,7 @@ <erlref> <header> <copyright> - <year>1996</year><year>2010</year> + <year>1996</year><year>2011</year> <holder>Ericsson AB. All Rights Reserved.</holder> </copyright> <legalnotice> @@ -164,6 +164,70 @@ for details.</p> </item> + <tag><c>makedep</c></tag> + <item> + <p>Produce a Makefile rule to track headers dependencies. + No object file is produced. + </p> + <p>By default, this rule is written to + <c><![CDATA[<File>.Pbeam]]></c>. However, if the option + <c>binary</c> is set, nothing is written and the rule is + returned in <c>Binary</c>. + </p> + <p>For instance, if one has the following module: + </p> + <code> +-module(module). + +-include_lib("eunit/include/eunit.hrl"). +-include("header.hrl"). + </code> + <p>Here is the Makefile rule generated by this option: + </p> + <code> +module.beam: module.erl \ + /usr/local/lib/erlang/lib/eunit/include/eunit.hrl \ + header.hrl + </code> + </item> + + <tag><c>{makedep_output, Output}</c></tag> + <item> + <p>Write generated rule(s) to <c>Output</c> instead of the + default <c><![CDATA[<File>.Pbeam]]></c>. <c>Output</c> + can be a filename or an <c>io_device()</c>. To write to + stdout, use <c>standard_io</c>. However if <c>binary</c> + is set, nothing is written to <c>Output</c> and the + result is returned to the caller with + <c>{ok, ModuleName, Binary}</c>. + </p> + </item> + + <tag><c>{makedep_target, Target}</c></tag> + <item> + <p>Change the name of the rule emitted to <c>Target</c>. + </p> + </item> + + <tag><c>makedep_quote_target</c></tag> + <item> + <p>Characters in <c>Target</c> special to make(1) are quoted. + </p> + </item> + + <tag><c>makedep_add_missing</c></tag> + <item> + <p>Consider missing headers as generated files and add them to the + dependencies. + </p> + </item> + + <tag><c>makedep_phony</c></tag> + <item> + <p>Add a phony target for each dependency. + </p> + </item> + <tag><c>'P'</c></tag> <item> <p>Produces a listing of the parsed code after preprocessing @@ -310,9 +374,9 @@ (there will not even be a warning if there is a mismatch).</p> </item> - <tag><c>{no_auto_import,[F/A, ...]}</c></tag> + <tag><c>{no_auto_import,[{F,A}, ...]}</c></tag> <item> - <p>Makes the function <c>F/A</c> no longer beeing + <p>Makes the function <c>F/A</c> no longer being auto-imported from the module <c>erlang</c>, which resolves BIF name clashes. This option has to be used to resolve name clashes with BIFs auto-imported before R14A, if one wants to @@ -323,8 +387,12 @@ without module prefix to local or imported functions before trying auto-imported BIFs. If the BIF is to be called, use the <c>erlang</c> module prefix in the call, not - <c>{ no_auto_import,[F/A, ...]}</c></p> + <c>{ no_auto_import,[{F,A}, ...]}</c></p> </note> + <p>If this option is written in the source code, as a + <c>-compile</c> directive, the syntax <c>F/A</c> can be used instead + of <c>{F,A}</c>. Example:</p> + <code>-compile({no_auto_import,[error/1]}).</code> </item> </taglist> diff --git a/lib/compiler/doc/src/notes.xml b/lib/compiler/doc/src/notes.xml index 7ea000a895..9d89b17afb 100644 --- a/lib/compiler/doc/src/notes.xml +++ b/lib/compiler/doc/src/notes.xml @@ -31,6 +31,171 @@ <p>This document describes the changes made to the Compiler application.</p> +<section><title>Compiler 4.7.2</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Two compiler bugs (that would cause the compiler to + terminate) reported by Christopher Williams have been + fixed.</p> + <p> + Own Id: OTP-8949</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p>The compiler would translate binary comprehensions + containing tail segments in a way that would would + confuse Dialyzer. For instance:</p> + <p><c>[42 || <<_:8/integer, _/bits>> <= + Bits]</c></p> + <p> + would produce a Dialyzer warning.</p> + <p> + Own Id: OTP-8864</p> + </item> + <item> + <p> + Code such as <c>foo(A) -> <<A:0>></c> + would crash the compiler.</p> + <p> + Own Id: OTP-8865</p> + </item> + <item> + <p> + The compiler could fail with an internal error when + variables were exported from a receive block but the + return value of the receive block were not used. (Thanks + to Jim Engquist for reporting this error.)</p> + <p> + Own Id: OTP-8888</p> + </item> + </list> + </section> + +</section> + +<section><title>Compiler 4.7.1</title> + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + Eliminated warnings for auto-imported BIF clashes.</p> + <p> + Own Id: OTP-8840</p> + </item> + </list> + </section> + +</section> + +<section><title>Compiler 4.7</title> + + <section><title>Fixed Bugs and Malfunctions</title> + <list> + <item> + <p> + Several problems in the inliner have been fixed.</p> + <p> + Own Id: OTP-8552</p> + </item> + </list> + </section> + + + <section><title>Improvements and New Features</title> + <list> + <item> + <p> + The module binary from EEP31 (and EEP9) is implemented.</p> + <p> + Own Id: OTP-8217</p> + </item> + <item> + <p>Local and imported functions now override the + auto-imported BIFs when the names clash. The pre R14 + behaviour was that auto-imported BIFs would override + local functions. To avoid that old programs change + behaviour, the following will generate an error:</p> + <list><item><p>Doing a call without explicit module name + to a local function having a name clashing with the name + of an auto-imported BIF that was present (and + auto-imported) before OTP R14A</p></item> + <item><p>Explicitly importing a function having a name + clashing with the name of an autoimported BIF that was + present (and autoimported) before OTP R14A</p></item> + <item><p>Using any form of the old compiler directive + <c>nowarn_bif_clash</c></p></item> </list> <p>If the BIF + was added or auto-imported in OTP R14A or later, + overriding it with an import or a local function will + only result in a warning,</p> <p>To resolve clashes, you + can either use the explicit module name <c>erlang</c> to + call the BIF, or you can remove the auto-import of that + specific BIF by using the new compiler directive + <c>-compile({no_auto_import,[F/A]}).</c>, which makes all + calls to the local or imported function without explicit + module name pass without warnings or errors.</p> <p>The + change makes it possible to add auto-imported BIFs + without breaking or silently changing old code in the + future. However some current code ingeniously utilizing + the old behaviour or the <c>nowarn_bif_clash</c> compiler + directive, might need changing to be accepted by the + compiler.</p> + <p> + *** POTENTIAL INCOMPATIBILITY ***</p> + <p> + Own Id: OTP-8579</p> + </item> + <item> + <p>The undocumented, unsupport, and deprecated function + <c>lists:flat_length/1</c> has been removed.</p> + <p> + Own Id: OTP-8584</p> + </item> + <item> + <p>Nested records can now be accessed without + parenthesis. See the Reference Manual for examples. + (Thanks to YAMASHINA Hio and Tuncer Ayaz.)</p> + <p> + Own Id: OTP-8597</p> + </item> + <item> + <p>It is now possible to suppress the warning in code + such as "<c>list_to_integer(S), ok</c>" by assigning the + ignored value "_" like this: "<c>_ = list_to_integer(S), + ok</c>".</p> + <p> + Own Id: OTP-8602</p> + </item> + <item> + <p><c>receive</c> statements that can only read out a + newly created reference are now specially optimized so + that it will execute in constant time regardless of the + number of messages in the receive queue for the process. + That optimization will benefit calls to + <c>gen_server:call()</c>. (See <c>gen:do_call/4</c> for + an example of a receive statement that will be + optimized.)</p> + <p> + Own Id: OTP-8623</p> + </item> + <item> + <p>The compiler optimizes record operations better.</p> + <p> + Own Id: OTP-8668</p> + </item> + </list> + </section> + +</section> + <section><title>Compiler 4.6.5</title> <section><title>Fixed Bugs and Malfunctions</title> |