From 42fc788556b98cf198ba4d0ca140e03c4af8ffca Mon Sep 17 00:00:00 2001
From: falkTX <falktx@falktx.com>
Date: Mon, 6 Jul 2020 22:55:53 +0100
Subject: [PATCH] Can now build lv2 plugins too

Signed-off-by: falkTX <falktx@falktx.com>
---
 libs/lv2-ttl-generator/meson.build | 20 ++++++++++++++++
 libs/meson.build                   |  1 +
 ports-legacy/meson.build           | 37 +++++++++++++++++++++++++++++-
 scripts/plugin-symbols.txt         |  4 ++++
 scripts/plugin-symbols.version     |  2 +-
 5 files changed, 62 insertions(+), 2 deletions(-)
 create mode 100644 libs/lv2-ttl-generator/meson.build
 create mode 100644 scripts/plugin-symbols.txt

diff --git a/libs/lv2-ttl-generator/meson.build b/libs/lv2-ttl-generator/meson.build
new file mode 100644
index 00000000..d2322308
--- /dev/null
+++ b/libs/lv2-ttl-generator/meson.build
@@ -0,0 +1,20 @@
+###############################################################################
+
+lv2_ttl_generator_dependencies = [
+]
+
+if not os_windows
+    lv2_ttl_generator_dependencies = [
+        cc.find_library('dl'),
+    ]
+endif
+
+lv2_ttl_generator = executable('lv2_ttl_generator',
+    sources: [
+        'lv2_ttl_generator.cpp'
+    ],
+    dependencies: lv2_ttl_generator_dependencies,
+    install: false,
+)
+
+###############################################################################
diff --git a/libs/meson.build b/libs/meson.build
index 079c2d97..c9127aba 100644
--- a/libs/meson.build
+++ b/libs/meson.build
@@ -3,5 +3,6 @@
 subdir('drowaudio')
 subdir('juced')
 subdir('juce-legacy')
+subdir('lv2-ttl-generator')
 
 ###############################################################################
diff --git a/ports-legacy/meson.build b/ports-legacy/meson.build
index d00f2d9c..10f88cca 100644
--- a/ports-legacy/meson.build
+++ b/ports-legacy/meson.build
@@ -118,7 +118,11 @@ endif
 link_flags_plugin = [
 ]
 
-if not os_darwin
+if os_darwin
+    link_flags_plugin += [
+        '-Wl,-export-symbols=../scripts/plugin-symbols.txt',
+    ]
+else
     link_flags_plugin += [
         '-Wl,--version-script=../scripts/plugin-symbols.version',
     ]
@@ -221,6 +225,37 @@ foreach plugin : plugins
         endif
     endif
 
+    if build_lv2
+        plugin_lv2_lib = shared_library(plugin_name + '_lv2',
+            name_prefix: '',
+            sources: plugin_srcs,
+            include_directories: [
+                include_directories(plugin / 'source'),
+                plugin_include_dirs,
+                plugin_extra_include_dirs,
+            ],
+            c_args: build_flags + build_flags_plugin + build_flags_plugin_lv2 + plugin_extra_build_flags,
+            cpp_args: build_flags_cpp + build_flags_plugin + build_flags_plugin_lv2 + plugin_extra_build_flags,
+            link_args: link_flags + link_flags_plugin,
+            link_with: link_with_plugin,
+            dependencies: dependencies_plugin + plugin_extra_dependencies,
+            install: true,
+            install_dir: lv2dir / plugin + '.lv2',
+        )
+
+        plugin_lv2_ttl = custom_target(plugin_name + '_lv2-ttl',
+            output: plugin_name + '.lv2',
+            input: plugin_lv2_lib,
+            command: [
+                'mkdir', '-p', meson.current_build_dir() / plugin_name + '.lv2', '&&',
+                'cd', meson.current_build_dir() / plugin_name + '.lv2', '&&',
+                lv2_ttl_generator, plugin_lv2_lib.full_path(),
+            ],
+            install: true,
+            install_dir: lv2dir / plugin + '.lv2',
+        )
+    endif
+
     if build_vst2
         plugin_vst2_lib = shared_library(plugin_name,
             name_prefix: '',
diff --git a/scripts/plugin-symbols.txt b/scripts/plugin-symbols.txt
new file mode 100644
index 00000000..11bb5616
--- /dev/null
+++ b/scripts/plugin-symbols.txt
@@ -0,0 +1,4 @@
+lv2_generate_ttl
+lv2_descriptor
+lv2ui_descriptor
+VSTPluginMain
diff --git a/scripts/plugin-symbols.version b/scripts/plugin-symbols.version
index b719ba39..0a4d0a30 100644
--- a/scripts/plugin-symbols.version
+++ b/scripts/plugin-symbols.version
@@ -1,4 +1,4 @@
 {
-    global: VSTPluginMain;
+    global: VSTPluginMain; lv2_generate_ttl; lv2_descriptor; lv2ui_descriptor;
     local: *;
 };