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-rw-r--r--lib/erl_interface/doc/src/ei.xml138
-rw-r--r--lib/erl_interface/doc/src/ei_connect.xml3
-rw-r--r--lib/erl_interface/doc/src/ei_users_guide.xml12
-rw-r--r--lib/erl_interface/doc/src/erl_connect.xml9
-rw-r--r--lib/erl_interface/doc/src/erl_eterm.xml9
-rw-r--r--lib/erl_interface/doc/src/erl_global.xml9
-rw-r--r--lib/erl_interface/doc/src/erl_interface.xml12
-rw-r--r--lib/erl_interface/doc/src/erl_malloc.xml8
-rw-r--r--lib/erl_interface/doc/src/erl_marshal.xml8
-rw-r--r--lib/erl_interface/doc/src/notes.xml126
-rw-r--r--lib/erl_interface/doc/src/ref_man.xml8
-rw-r--r--lib/erl_interface/doc/src/ref_man_ei.xml10
-rw-r--r--lib/erl_interface/doc/src/ref_man_erl_interface.xml8
13 files changed, 331 insertions, 29 deletions
diff --git a/lib/erl_interface/doc/src/ei.xml b/lib/erl_interface/doc/src/ei.xml
index 179dbbd966..70af5642da 100644
--- a/lib/erl_interface/doc/src/ei.xml
+++ b/lib/erl_interface/doc/src/ei.xml
@@ -35,6 +35,9 @@
<lib>ei</lib>
<libsummary>Routines for handling the Erlang binary term format.</libsummary>
<description>
+ <note><p>The support for VxWorks is deprecated as of OTP 22, and
+ will be removed in OTP 23.</p></note>
+
<p>The library <c>ei</c> contains macros and functions to encode
and decode the Erlang binary term format.</p>
@@ -180,6 +183,43 @@ typedef enum {
</func>
<func>
+ <name since="OTP 22.0"><ret>int</ret><nametext>ei_decode_bitstring(const char *buf, int *index, const char **pp, unsigned int *bitoffsp, size_t *nbitsp)</nametext></name>
+ <fsummary>Decode a bitstring.</fsummary>
+ <desc>
+ <p>Decodes a bit string from the binary format.</p>
+ <taglist>
+ <tag><c>pp</c></tag>
+ <item><p>Either <c>NULL</c> or <c>*pp</c> returns a pointer to
+ the first byte of the bit string. The returned bit string is
+ readable as long as the buffer pointed to by <c>buf</c> is
+ readable and not written to.</p>
+ </item>
+ <tag><c>bitoffsp</c></tag>
+ <item><p>Either <c>NULL</c> or <c>*bitoffsp</c> returns the
+ number of unused bits in the first byte pointed to by
+ <c>*pp</c>. The value of <c>*bitoffsp</c> is between 0 and 7.
+ Unused bits in the first byte are the most significant bits.</p>
+ </item>
+ <tag><c>nbitsp</c></tag>
+ <item><p>Either <c>NULL</c> or <c>*nbitsp</c> returns the length
+ of the bit string in <em>bits</em>.</p>
+ </item>
+ </taglist>
+ <p>Returns <c>0</c> if it was a bit string term.</p>
+ <p>The number of <em>bytes</em> pointed to by <c>*pp</c>, which are
+ part of the bit string, is <c>(*bitoffsp + *nbitsp + 7)/8</c>. If
+ <c>(*bitoffsp + *bitsp)%8 > 0</c> then only <c>(*bitoffsp +
+ *bitsp)%8</c> bits of the last byte are used. Unused bits in
+ the last byte are the least significant bits.</p>
+ <p>The values of unused bits in the first and last byte are undefined
+ and cannot be relied on.</p>
+ <p>Number of bits may be divisible by 8, which means a binary
+ decodable by <c>ei_decode_binary</c> is also decodable by
+ <c>ei_decode_bitstring</c>.</p>
+ </desc>
+ </func>
+
+ <func>
<name since=""><ret>int</ret><nametext>ei_decode_boolean(const char *buf, int *index, int *p)</nametext></name>
<fsummary>Decode a boolean.</fsummary>
<desc>
@@ -346,8 +386,10 @@ typedef enum {
<c>t</c> is actually an <c>ETERM**</c> (see
<seealso marker="erl_eterm"><c>erl_eterm</c></seealso>).
The term is later to be deallocated.</p>
- <p>Notice that this function is located in the <c>Erl_Interface</c>
- library.</p>
+ <note><p>This function is deprecated as of OTP 22 and will be removed in
+ OTP 23 together with the old legacy <c>erl_interface</c> library (functions
+ with prefix <c>erl_</c>).</p>
+ </note>
</desc>
</func>
@@ -456,6 +498,28 @@ typedef enum {
</func>
<func>
+ <name since="OTP 22.0"><ret>int</ret>
+ <nametext>ei_encode_bitstring(char *buf, int *index, const char *p, size_t bitoffs, size_t nbits)</nametext></name>
+ <name since="OTP 22.0"><ret>int</ret>
+ <nametext>ei_x_encode_bitstring(ei_x_buff* x, const char *p, size_t bitoffs, size_t nbits)</nametext></name>
+ <fsummary>Encode a bitstring.</fsummary>
+ <desc>
+ <p>Encodes a bit string in the binary format.</p>
+ <p>The data is at <c>p</c>. The length of the bit string is <c>nbits</c>
+ bits. The first <c>bitoffs</c> bits of the data at <c>p</c> are unused.
+ The first byte which is part of the bit string is
+ <c>p[bitoffs/8]</c>. The <c>bitoffs%8</c> most significant bits of
+ the first byte <c>p[bitoffs/8]</c> are unused.</p>
+ <p>The number of bytes which is part of the bit string is <c>(bitoffs +
+ nbits + 7)/8</c>. If <c>(bitoffs + nbits)%8 > 0</c> then only <c>(bitoffs +
+ nbits)%8</c> bits of the last byte are used. Unused bits in
+ the last byte are the least significant bits.</p>
+ <p>The values of unused bits are disregarded and does not need to be
+ cleared.</p>
+ </desc>
+ </func>
+
+ <func>
<name since=""><ret>int</ret><nametext>ei_encode_boolean(char *buf, int *index, int p)</nametext></name>
<name since=""><ret>int</ret><nametext>ei_x_encode_boolean(ei_x_buff* x, int p)</nametext></name>
<fsummary>Encode a boolean.</fsummary>
@@ -653,6 +717,10 @@ ei_x_encode_string(&amp;x, "Banana");</pre>
<c>erl_interface</c>. Parameter <c>t</c> is
actually an <c>ETERM</c> pointer. This function
does not free the <c>ETERM</c>.</p>
+ <note><p>These functions are deprecated as of OTP 22 and will be removed in
+ OTP 23 together with the old legacy <c>erl_interface</c> library
+ (functions with prefix <c>erl_</c>).</p>
+ </note>
</desc>
</func>
<func>
@@ -722,12 +790,12 @@ ei_encode_tuple_header(buf, &amp;i, 0);</pre>
<name since=""><ret>int</ret><nametext>ei_get_type(const char *buf, const int *index, int *type, int *size)</nametext></name>
<fsummary>Fetch the type and size of an encoded term.</fsummary>
<desc>
- <p>Returns the type in <c>type</c> and size in
- <c>size</c> of the encoded term. For strings and atoms,
+ <p>Returns the type in <c>*type</c> and size in
+ <c>*size</c> of the encoded term. For strings and atoms,
size is the number of characters <em>not</em> including the
- terminating <c>NULL</c>. For binaries, <c>size</c> is the number of
- bytes. For lists and tuples, <c>size</c> is the arity of
- the object. For other types, <c>size</c> is 0. In all
+ terminating <c>NULL</c>. For binaries and bitstrings, <c>*size</c> is
+ the number of bytes. For lists, tuples and maps, <c>*size</c> is the
+ arity of the object. For other types, <c>*size</c> is 0. In all
cases, <c>index</c> is left unchanged.</p>
</desc>
</func>
@@ -781,30 +849,48 @@ ei_encode_tuple_header(buf, &amp;i, 0);</pre>
</type>
<desc>
<marker id="ei_set_compat_rel"></marker>
- <p>By default, the <c>ei</c> library is only guaranteed
- to be compatible with other Erlang/OTP components from the same
- release as the <c>ei</c> library itself. For example,
- <c>ei</c> from
- Erlang/OTP R10 is not compatible with an Erlang emulator
- from Erlang/OTP R9 by default.</p>
- <p>A call to <c>ei_set_compat_rel(release_number)</c> sets
- the <c>ei</c> library in compatibility mode of release
- <c>release_number</c>. Valid range of
- <c>release_number</c>
- is <c>[7, current release]</c>. This makes it possible to
- communicate with Erlang/OTP components from earlier releases.</p>
+ <p>In general, the <c>ei</c> library is guaranteed
+ to be compatible with other Erlang/OTP components that are 2 major
+ releases older or newer than the <c>ei</c> library itself.</p>
+ <p>Sometimes an exception to the above rule has to be made to make new
+ features (or even bug fixes) possible. A call to
+ <c>ei_set_compat_rel(release_number)</c> sets
+ the <c>ei</c> library in compatibility mode of OTP release
+ <c>release_number</c>.</p>
+ <p>The only useful value for <c>release_number</c> is currently
+ <c>21</c>. This will only be useful and have an effect if <em>bit
+ strings</em> or <em>export funs</em> are received from a connected
+ node. Before OTP 22, bit strings and export funs were not supported by
+ <c>ei</c>. They were instead encoded using an undocumented fallback
+ tuple format when sent from the emulator to <c>ei</c>:</p>
+ <taglist>
+ <tag><c>Bit string</c></tag>
+ <item><p>The term <c>&lt;&lt;42, 1:1>></c> was encoded as
+ <c>{&lt;&lt;42, 128>>, 1}</c>. The first element of the tuple is a
+ binary and the second element denotes how many bits of the last bytes
+ are part of the bit string. In this example only the most significant
+ bit of the last byte (128) is part of the bit string.</p>
+ </item>
+ <tag><c>Export fun</c></tag>
+ <item><p>The term <c>fun lists:map/2</c> was encoded as
+ <c>{lists,map}</c>. A tuple with the module, function and a missing
+ arity.</p>
+ </item>
+ </taglist>
+ <p>If <c>ei_set_compat_rel(21)</c> is <em>not</em> called then a connected
+ emulator will send bit strings and export funs correctly encoded. The
+ functions <seealso marker="#ei_decode_bitstring"><c>ei_decode_bitstring</c></seealso>
+ and <seealso marker="#ei_decode_fun"><c>ei_decode_fun</c></seealso>
+ has to be used to decode such terms. Calling
+ <c>ei_set_compat_rel(21)</c> should only be done as a workaround to
+ keep an old implementation alive, which expects to receive the
+ undocumented tuple formats for bit strings and/or export funs.
+ </p>
<note>
<p>If this function is called, it can only be called once
and must be called before any other functions in the
<c>ei</c> library are called.</p>
</note>
- <warning>
- <p>You can run into trouble if this feature is used
- carelessly. Always ensure that all communicating
- components are either from the same Erlang/OTP release, or
- from release X and release Y where all components
- from release Y are in compatibility mode of release X.</p>
- </warning>
</desc>
</func>
diff --git a/lib/erl_interface/doc/src/ei_connect.xml b/lib/erl_interface/doc/src/ei_connect.xml
index 2dd0a285fe..795f1249b3 100644
--- a/lib/erl_interface/doc/src/ei_connect.xml
+++ b/lib/erl_interface/doc/src/ei_connect.xml
@@ -34,6 +34,9 @@
<lib>ei_connect</lib>
<libsummary>Communicate with distributed Erlang.</libsummary>
<description>
+ <note><p>The support for VxWorks is deprecated as of OTP 22, and
+ will be removed in OTP 23.</p></note>
+
<p>This module enables C-programs to communicate with Erlang nodes,
using the Erlang distribution over TCP/IP.</p>
diff --git a/lib/erl_interface/doc/src/ei_users_guide.xml b/lib/erl_interface/doc/src/ei_users_guide.xml
index 2dfd99e35a..7ca10d1a99 100644
--- a/lib/erl_interface/doc/src/ei_users_guide.xml
+++ b/lib/erl_interface/doc/src/ei_users_guide.xml
@@ -34,6 +34,18 @@
</header>
<section>
+ <title>Deprecation and Removal</title>
+ <note><p>The support for VxWorks is deprecated as of OTP 22, and
+ will be removed in OTP 23.</p></note>
+ <note><p>The old legacy <c>erl_interface</c> library (functions
+ with prefix <c>erl_</c>) is deprecated as of OTP 22, and will be
+ removed in OTP 23. This does not apply to the <c>ei</c>
+ library. Reasonably new <c>gcc</c> compilers will issue deprecation
+ warnings. In order to disable these warnings, define the macro
+ <c>EI_NO_DEPR_WARN</c>.</p></note>
+ </section>
+
+ <section>
<title>Introduction</title>
<p>The <c>Erl_Interface</c> library contains functions that help you
integrate programs written in C and Erlang. The functions in
diff --git a/lib/erl_interface/doc/src/erl_connect.xml b/lib/erl_interface/doc/src/erl_connect.xml
index 139ac9e2f0..9492a82864 100644
--- a/lib/erl_interface/doc/src/erl_connect.xml
+++ b/lib/erl_interface/doc/src/erl_connect.xml
@@ -35,6 +35,15 @@
<lib>erl_connect</lib>
<libsummary>Communicate with distributed Erlang.</libsummary>
<description>
+ <note><p>The support for VxWorks is deprecated as of OTP 22, and
+ will be removed in OTP 23.</p></note>
+ <note><p>The old legacy <c>erl_interface</c> library (functions
+ with prefix <c>erl_</c>) is deprecated as of OTP 22, and will be
+ removed in OTP 23. This does not apply to the <c>ei</c>
+ library. Reasonably new <c>gcc</c> compilers will issue deprecation
+ warnings. In order to disable these warnings, define the macro
+ <c>EI_NO_DEPR_WARN</c>.</p></note>
+
<p>This module provides support for communication between distributed
Erlang nodes and C-nodes, in a manner that is transparent to Erlang
processes.</p>
diff --git a/lib/erl_interface/doc/src/erl_eterm.xml b/lib/erl_interface/doc/src/erl_eterm.xml
index 070ed30dfe..295760b4e6 100644
--- a/lib/erl_interface/doc/src/erl_eterm.xml
+++ b/lib/erl_interface/doc/src/erl_eterm.xml
@@ -35,6 +35,15 @@
<lib>erl_eterm</lib>
<libsummary>Functions for Erlang term construction.</libsummary>
<description>
+ <note><p>The support for VxWorks is deprecated as of OTP 22, and
+ will be removed in OTP 23.</p></note>
+ <note><p>The old legacy <c>erl_interface</c> library (functions
+ with prefix <c>erl_</c>) is deprecated as of OTP 22, and will be
+ removed in OTP 23. This does not apply to the <c>ei</c>
+ library. Reasonably new <c>gcc</c> compilers will issue deprecation
+ warnings. In order to disable these warnings, define the macro
+ <c>EI_NO_DEPR_WARN</c>.</p></note>
+
<p>This module provides functions for creating and manipulating
Erlang terms.</p>
diff --git a/lib/erl_interface/doc/src/erl_global.xml b/lib/erl_interface/doc/src/erl_global.xml
index 72d43e81d5..39085b46f0 100644
--- a/lib/erl_interface/doc/src/erl_global.xml
+++ b/lib/erl_interface/doc/src/erl_global.xml
@@ -35,6 +35,15 @@
<lib>erl_global</lib>
<libsummary>Access globally registered names.</libsummary>
<description>
+ <note><p>The support for VxWorks is deprecated as of OTP 22, and
+ will be removed in OTP 23.</p></note>
+ <note><p>The old legacy <c>erl_interface</c> library (functions
+ with prefix <c>erl_</c>) is deprecated as of OTP 22, and will be
+ removed in OTP 23. This does not apply to the <c>ei</c>
+ library. Reasonably new <c>gcc</c> compilers will issue deprecation
+ warnings. In order to disable these warnings, define the macro
+ <c>EI_NO_DEPR_WARN</c>.</p></note>
+
<p>This module provides support for registering, looking
up, and unregistering names in the <c>global</c> module.
For more information, see
diff --git a/lib/erl_interface/doc/src/erl_interface.xml b/lib/erl_interface/doc/src/erl_interface.xml
index 4e66655b39..decd66046a 100644
--- a/lib/erl_interface/doc/src/erl_interface.xml
+++ b/lib/erl_interface/doc/src/erl_interface.xml
@@ -58,6 +58,18 @@
</list>
<section>
+ <title>Deprecation and Removal</title>
+ <note><p>The support for VxWorks is deprecated as of OTP 22, and
+ will be removed in OTP 23.</p></note>
+ <note><p>The old legacy <c>erl_interface</c> library (functions
+ with prefix <c>erl_</c>) is deprecated as of OTP 22, and will be
+ removed in OTP 23. This does not apply to the <c>ei</c>
+ library. Reasonably new <c>gcc</c> compilers will issue deprecation
+ warnings. In order to disable these warnings, define the macro
+ <c>EI_NO_DEPR_WARN</c>.</p></note>
+ </section>
+
+ <section>
<title>Compiling and Linking Your Code</title>
<p>In order to use any of the Erl_Interface functions, include the
following lines in your code:</p>
diff --git a/lib/erl_interface/doc/src/erl_malloc.xml b/lib/erl_interface/doc/src/erl_malloc.xml
index aae3b7e078..6650620064 100644
--- a/lib/erl_interface/doc/src/erl_malloc.xml
+++ b/lib/erl_interface/doc/src/erl_malloc.xml
@@ -35,6 +35,14 @@
<lib>erl_malloc</lib>
<libsummary>Memory allocation functions.</libsummary>
<description>
+ <note><p>The support for VxWorks is deprecated as of OTP 22, and
+ will be removed in OTP 23.</p></note>
+ <note><p>The old legacy <c>erl_interface</c> library (functions
+ with prefix <c>erl_</c>) is deprecated as of OTP 22, and will be
+ removed in OTP 23. This does not apply to the <c>ei</c>
+ library. Reasonably new <c>gcc</c> compilers will issue deprecation
+ warnings. In order to disable these warnings, define the macro
+ <c>EI_NO_DEPR_WARN</c>.</p></note>
<p>This module provides functions for allocating and deallocating
memory.</p>
</description>
diff --git a/lib/erl_interface/doc/src/erl_marshal.xml b/lib/erl_interface/doc/src/erl_marshal.xml
index 1a6d3bb43c..33d359d871 100644
--- a/lib/erl_interface/doc/src/erl_marshal.xml
+++ b/lib/erl_interface/doc/src/erl_marshal.xml
@@ -35,6 +35,14 @@
<lib>erl_marshal</lib>
<libsummary>Encoding and decoding of Erlang terms.</libsummary>
<description>
+ <note><p>The support for VxWorks is deprecated as of OTP 22, and
+ will be removed in OTP 23.</p></note>
+ <note><p>The old legacy <c>erl_interface</c> library (functions
+ with prefix <c>erl_</c>) is deprecated as of OTP 22, and will be
+ removed in OTP 23. This does not apply to the <c>ei</c>
+ library. Reasonably new <c>gcc</c> compilers will issue deprecation
+ warnings. In order to disable these warnings, define the macro
+ <c>EI_NO_DEPR_WARN</c>.</p></note>
<p>This module contains functions for encoding Erlang terms into
a sequence of bytes, and for decoding Erlang terms from a
sequence of bytes.</p>
diff --git a/lib/erl_interface/doc/src/notes.xml b/lib/erl_interface/doc/src/notes.xml
index 1f95382704..c47f0d2bd1 100644
--- a/lib/erl_interface/doc/src/notes.xml
+++ b/lib/erl_interface/doc/src/notes.xml
@@ -31,6 +31,82 @@
</header>
<p>This document describes the changes made to the Erl_interface application.</p>
+<section><title>Erl_Interface 3.12</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ The vxworks configure has been updated to respect the
+ environment CFLAGS.</p>
+ <p>
+ Own Id: OTP-15773</p>
+ </item>
+ </list>
+ </section>
+
+
+ <section><title>Improvements and New Features</title>
+ <list>
+ <item>
+ <p>
+ Minor adjustments made to build system for parallel
+ configure.</p>
+ <p>
+ Own Id: OTP-15340 Aux Id: OTP-14625 </p>
+ </item>
+ <item>
+ <p>
+ The limited support for VxWorks is deprecated as of OTP
+ 22, and will be removed in OTP 23.</p>
+ <p>
+ *** POTENTIAL INCOMPATIBILITY ***</p>
+ <p>
+ Own Id: OTP-15621</p>
+ </item>
+ <item>
+ <p>The old legacy <c>erl_interface</c> library (functions
+ with prefix <c>erl_</c>) is deprecated as of OTP 22, and
+ will be removed in OTP 23. This does not apply to the
+ <c>ei</c> library. Reasonably new <c>gcc</c> compilers
+ will issue deprecation warnings. In order to disable
+ these warnings, define the macro
+ <c>EI_NO_DEPR_WARN</c>.</p>
+ <p>
+ *** POTENTIAL INCOMPATIBILITY ***</p>
+ <p>
+ Own Id: OTP-15622</p>
+ </item>
+ <item>
+ <p>Added support to receive, decode, encode and send both
+ bit strings and export funs (<c>fun M:F/A</c>).</p>
+ <p>New functions <c>ei_decode_bitstring</c> and
+ <c>ei_encode_bitstring</c> have been added in order to
+ decode and encode bit strings where the number of bits is
+ not necessary divisible by 8 (a whole number of bytes).
+ The existing functions <c>ei_decode_fun</c> and
+ <c>ei_encode_fun</c> can now also handle export funs.</p>
+ <p>Before this change, bit strings and export funs sent
+ to an erl_interface c-node were encoded using an
+ undocumented fallback tuple format. For bit strings
+ <c>{Binary,BitsInLastByte}</c> and for export funs
+ <c>{M,F}</c>. Existing c-node implementations expecting
+ these tuples must be changed to instead use
+ <c>ei_decode_bitstring</c> and <c>ei_decode_fun</c>. As a
+ temporary solution you can also build erl_interface with
+ macro <c>EI_COMPAT=21</c> or call
+ <c>ei_set_compat_rel(21)</c> to receive the old fallback
+ tuples.</p>
+ <p>
+ *** POTENTIAL INCOMPATIBILITY ***</p>
+ <p>
+ Own Id: OTP-15712 Aux Id: OTP-15774 </p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>Erl_Interface 3.11.3</title>
<section><title>Fixed Bugs and Malfunctions</title>
@@ -64,6 +140,39 @@
</section>
+<section><title>Erl_Interface 3.11.2.1</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ <c>erl_interface</c>/<c>ei</c> refused to use node names
+ with an alive name (the part of the node name preceding
+ the @ sign) longer than 63 characters and a host name
+ longer than 64 characters. The total amount of characters
+ allowed in a node name (alivename@hostname) was thus
+ limited to 128 characters. These limits applied both to
+ the own node name as well as node names of other nodes.
+ Ordinary Erlang nodes limit the node name length to 256
+ characters, which meant that you could not communicate
+ with certain Erlang nodes due to their node name used.</p>
+ <p>
+ <c>erl_interface</c>/<c>ei</c> now allow the total amount
+ of characters in a node name to be up to 256 characters.
+ These characters may be distributed between alive name
+ and host name in whatever way needed. That is, the
+ maximum amount of characters in the alive name may be 254
+ and the maximum amount of characters in the host name may
+ be 254, but in total the node name must not exceed 256
+ characters.</p>
+ <p>
+ Own Id: OTP-15781 Aux Id: ERIERL-356 </p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>Erl_Interface 3.11.2</title>
<section><title>Fixed Bugs and Malfunctions</title>
@@ -202,6 +311,22 @@
</section>
+<section><title>Erl_Interface 3.10.2.2</title>
+
+ <section><title>Fixed Bugs and Malfunctions</title>
+ <list>
+ <item>
+ <p>
+ Fix handling of Makefile dependencies so that parallel
+ make works properly.</p>
+ <p>
+ Own Id: OTP-15757</p>
+ </item>
+ </list>
+ </section>
+
+</section>
+
<section><title>Erl_Interface 3.10.2.1</title>
<section><title>Fixed Bugs and Malfunctions</title>
@@ -1652,4 +1777,3 @@
</section>
</section>
</chapter>
-
diff --git a/lib/erl_interface/doc/src/ref_man.xml b/lib/erl_interface/doc/src/ref_man.xml
index 1e20637cb7..a4f947c79f 100644
--- a/lib/erl_interface/doc/src/ref_man.xml
+++ b/lib/erl_interface/doc/src/ref_man.xml
@@ -29,6 +29,14 @@
<file>ref_man.xml</file>
</header>
<description>
+ <note><p>The support for VxWorks is deprecated as of OTP 22, and
+ will be removed in OTP 23.</p></note>
+ <note><p>The old legacy <c>erl_interface</c> library (functions
+ with prefix <c>erl_</c>) is deprecated as of OTP 22, and will be
+ removed in OTP 23. This does not apply to the <c>ei</c>
+ library. Reasonably new <c>gcc</c> compilers will issue deprecation
+ warnings. In order to disable these warnings, define the macro
+ <c>EI_NO_DEPR_WARN</c>.</p></note>
</description>
<xi:include href="ei.xml"/>
<xi:include href="ei_connect.xml"/>
diff --git a/lib/erl_interface/doc/src/ref_man_ei.xml b/lib/erl_interface/doc/src/ref_man_ei.xml
index 92ff9ed328..d8d1deaea1 100644
--- a/lib/erl_interface/doc/src/ref_man_ei.xml
+++ b/lib/erl_interface/doc/src/ref_man_ei.xml
@@ -30,8 +30,14 @@
<file>ref_man_ei.xml</file>
</header>
<description>
- <p>The <c>ei</c> library is a <c>C</c> interface library for
- communication with <c>Erlang</c>.</p>
+ <note><p>The support for VxWorks is deprecated as of OTP 22, and
+ will be removed in OTP 23.</p></note>
+ <note><p>The old legacy <c>erl_interface</c> library (functions
+ with prefix <c>erl_</c>) is deprecated as of OTP 22, and will be
+ removed in OTP 23. This does not apply to the <c>ei</c>
+ library. Reasonably new <c>gcc</c> compilers will issue deprecation
+ warnings. In order to disable these warnings, define the macro
+ <c>EI_NO_DEPR_WARN</c>.</p></note>
<note>
<p>By default, the <c>ei</c> library is only guaranteed
to be compatible with other Erlang/OTP components from the same
diff --git a/lib/erl_interface/doc/src/ref_man_erl_interface.xml b/lib/erl_interface/doc/src/ref_man_erl_interface.xml
index 4b1d0e9981..2b69d0fa74 100644
--- a/lib/erl_interface/doc/src/ref_man_erl_interface.xml
+++ b/lib/erl_interface/doc/src/ref_man_erl_interface.xml
@@ -30,6 +30,14 @@
<file>ref_man_erl_interface.xml</file>
</header>
<description>
+ <note><p>The support for VxWorks is deprecated as of OTP 22, and
+ will be removed in OTP 23.</p></note>
+ <note><p>The old legacy <c>erl_interface</c> library (functions
+ with prefix <c>erl_</c>) is deprecated as of OTP 22, and will be
+ removed in OTP 23. This does not apply to the <c>ei</c>
+ library. Reasonably new <c>gcc</c> compilers will issue deprecation
+ warnings. In order to disable these warnings, define the macro
+ <c>EI_NO_DEPR_WARN</c>.</p></note>
<p>The <c>erl_interface</c> library is a <c>C</c> interface library
for communication with <c>Erlang</c>.</p>
<note>