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-rw-r--r--lib/reltool/doc/src/reltool.xml48
-rw-r--r--lib/reltool/src/reltool.hrl4
2 files changed, 51 insertions, 1 deletions
diff --git a/lib/reltool/doc/src/reltool.xml b/lib/reltool/doc/src/reltool.xml
index 9a4e2d130e..9b43640d83 100644
--- a/lib/reltool/doc/src/reltool.xml
+++ b/lib/reltool/doc/src/reltool.xml
@@ -221,6 +221,52 @@
system.</p>
</item>
+ <tag><c>excl_lib</c></tag>
+ <item>
+ <warning><p>This option is experimental.</p></warning>
+ <p>If the <c>excl_lib</c> option is set to <c>otp_root</c>
+ then reltool will not copy anything from the Erlang/OTP
+ installation ($OTP_ROOT) into the target structure. The goal
+ is to create a "slim" release which can be used together with
+ an existing Erlang/OTP installation. The target structure will
+ therefore only contain a <c>lib</c> directory with the
+ applications that were found outside of $OTP_ROOT (typically
+ your own applications), and a <c>releases</c> directory with
+ the generated <c>.rel,</c> <c>.script</c> and <c>.boot</c>
+ files.</p>
+
+ <p>When starting this release, three things must be specified:</p>
+ <taglist>
+ <tag><b>Which <c>releases</c> directory to use</b></tag>
+ <item>Tell the release handler to use the <c>releases</c>
+ directory in our target structure instead of
+ <c>$OTP_ROOT/releases</c>. This is done by setting the SASL
+ environment variable <c>releases_dir</c>, either from the
+ command line (<c>-sasl releases_dir
+ &lt;target-dir&gt;/releases</c>) or in
+ <c>sys.config</c>.</item>
+
+ <tag><b>Which boot file to use</b></tag>
+ <item>The default boot file is <c>$OTP_ROOT/bin/start</c>,
+ but in this case we need to specify a boot file from our
+ target structure, typically
+ <c>&lt;target-dir&gt;/releases/&lt;vsn&gt;/&lt;RelName&gt;</c>. This
+ is done with the <c>-boot</c> command line option to
+ <c>erl</c></item>
+
+ <tag><b>The location of our applications</b></tag>
+ <item>The generated .script (and .boot) file uses the
+ environment variable <c>$RELTOOL_EXT_LIB</c> as prefix for
+ the paths to all applications. The <c>-boot_var</c> option
+ to <c>erl</c> can be used for specifying the value of this
+ variable, typically <c>-boot_var RELTOOL_EXT_LIB
+ &lt;target-dir&gt;/lib</c>.</item>
+ </taglist>
+
+ <p>Example:</p>
+ <p><code>erl -sasl releases_dir \"mytarget/releases\" -boot mytarget/releases/1.0/myrel -boot_var RELTOOL_EXT_LIB mytarget/lib</code></p>
+ </item>
+
<tag><c>incl_sys_filters</c></tag>
<item>
<p>This parameter normally contains a list of regular
@@ -452,6 +498,7 @@ app() = {vsn, app_vsn()}
| {incl_cond, incl_cond()}
| {debug_info, debug_info()}
| {app_file, app_file()}
+ | {excl_lib, excl_lib()}
| {incl_sys_filters, incl_sys_filters()}
| {excl_sys_filters, excl_sys_filters()}
| {incl_app_filters, incl_app_filters()}
@@ -477,6 +524,7 @@ escript() = {incl_cond, incl_cond()}
escript_file() = file()
excl_app_filters() = regexps()
excl_archive_filters() = regexps()
+excl_lib() = otp_root
excl_sys_filters() = regexps()
file() = string()
incl_app() = app_name()
diff --git a/lib/reltool/src/reltool.hrl b/lib/reltool/src/reltool.hrl
index c0736bb4c8..f0d8b38519 100644
--- a/lib/reltool/src/reltool.hrl
+++ b/lib/reltool/src/reltool.hrl
@@ -79,6 +79,7 @@
| {debug_info, debug_info()}
| {app_file, app_file()}
| {profile, profile()}
+ | {excl_lib, excl_lib()}
| {incl_sys_filters, incl_sys_filters()}
| {excl_sys_filters, excl_sys_filters()}
| {incl_app_filters, incl_app_filters()}
@@ -123,6 +124,7 @@
-type incl_defaults() :: boolean().
-type incl_derived() :: boolean().
-type status() :: missing | ok.
+-type excl_lib() :: otp_root.
-record(common,
{
@@ -233,7 +235,7 @@
rels :: [#rel{}],
emu_name :: emu_name(),
profile :: profile(),
- excl_lib :: otp_root,
+ excl_lib :: excl_lib(),
incl_sys_filters :: [#regexp{}],
excl_sys_filters :: [#regexp{}],
incl_app_filters :: [#regexp{}],