Fixes for the Meson build of libtraceevent:

- Make the plugin directory the same as the Makefiles
- Install the plugins as modules not static and versioned shared libraries
- Add an option to disable building the documentation (needs asciidoc and xmlto)

Upstream-Status: Submitted [https://lore.kernel.org/linux-trace-devel/20240311111140.1789879-1-alex@linutronix.de/T/#u]
Signed-off-by: Ross Burton <ross.burton@arm.com>

diff --git a/meson.build b/meson.build
index b61c873..4bba4d8 100644
--- a/meson.build
+++ b/meson.build
@@ -25,7 +25,7 @@ htmldir = join_paths(prefixdir, get_option('htmldir'))
 libdir = join_paths(prefixdir, get_option('libdir'))
 plugindir = get_option('plugindir')
 if plugindir == ''
-    plugindir = join_paths(libdir, 'libtraceevent/plugins')
+    plugindir = join_paths(libdir, 'traceevent/plugins')
 endif
 
 add_project_arguments(
@@ -45,10 +45,13 @@ if cunit_dep.found()
     subdir('utest')
 endif
 subdir('samples')
-subdir('Documentation')
 
-custom_target(
-    'docs',
-    output: 'docs',
-    depends: [html, man],
-    command: ['echo'])
+if get_option('docs')
+    subdir('Documentation')
+
+    custom_target(
+        'docs',
+        output: 'docs',
+        depends: [html, man],
+        command: ['echo'])
+endif
diff --git a/meson_options.txt b/meson_options.txt
index b2294f6..0611216 100644
--- a/meson_options.txt
+++ b/meson_options.txt
@@ -4,6 +4,10 @@
 
 option('plugindir', type : 'string',
        description : 'set the plugin dir')
+
+option('docs', type : 'boolean', value: true,
+       description : 'build documentation')
+
 option('htmldir', type : 'string', value : 'share/doc/libtraceevent-doc',
        description : 'directory for HTML documentation')
 option('asciidoctor', type : 'boolean', value: false,
diff --git a/plugins/meson.build b/plugins/meson.build
index 74ad664..4919be4 100644
--- a/plugins/meson.build
+++ b/plugins/meson.build
@@ -19,11 +19,10 @@ plugins = [
 
 pdeps = []
 foreach plugin : plugins
-    pdeps += library(
+    pdeps += shared_module(
         plugin.replace('.c', ''),
         plugin,
         name_prefix: '',
-        version: library_version,
         dependencies: [libtraceevent_dep],
         include_directories: [incdir],
         install: true,
