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-rw-r--r--lib/erl_interface/doc/src/ref_man_ei.xml10
1 files changed, 8 insertions, 2 deletions
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