Implement yabridge_version for all plugin bridges

The host can use this to query the yabridge version in use.

src/chainloader/clap-chainloader.cpp

@@ -54,7 +54,7 @@ const void* (*yabridge_module_get_factory)(ClapPluginBridge* instance,
 // This bridges the `yabridge_version()` call from the plugin library. This
 // function was added later, so through weird version mixing it may be missing
 // on the yabridge library.
-char* (*remote_yabridge_version)() = nullptr;
+const char* (*remote_yabridge_version)() = nullptr;
 
 /**
  * The bridge instance for this chainloader. This is initialized when
@@ -181,7 +181,7 @@ CLAP_EXPORT const clap_plugin_entry_t clap_entry = {
  * wouldn't be very useful, and that would also cause the chainloader to be
  * rebuilt on every git commit in development.
  */
-extern "C" YABRIDGE_EXPORT char* yabridge_version() {
+extern "C" YABRIDGE_EXPORT const char* yabridge_version() {
     if (!initialize_library() || !remote_yabridge_version) {
         return nullptr;
     }

src/chainloader/vst2-chainloader.cpp

@@ -52,7 +52,7 @@ AEffect* (*yabridge_plugin_init)(audioMasterCallback host_callback,
 // This bridges the `yabridge_version()` call from the plugin library. This
 // function was added later, so through weird version mixing it may be missing
 // on the yabridge library.
-char* (*remote_yabridge_version)() = nullptr;
+const char* (*remote_yabridge_version)() = nullptr;
 
 /**
  * The first time one of the exported functions from this library gets called,
@@ -127,7 +127,7 @@ YABRIDGE_EXPORT AEffect* deprecated_main(audioMasterCallback audioMaster) {
  * wouldn't be very useful, and that would also cause the chainloader to be
  * rebuilt on every git commit in development.
  */
-extern "C" YABRIDGE_EXPORT char* yabridge_version() {
+extern "C" YABRIDGE_EXPORT const char* yabridge_version() {
     if (!initialize_library() || !remote_yabridge_version) {
         return nullptr;
     }

src/chainloader/vst3-chainloader.cpp

@@ -54,7 +54,7 @@ PluginFactory* (*yabridge_module_get_plugin_factory)(
 // This bridges the `yabridge_version()` call from the plugin library. This
 // function was added later, so through weird version mixing it may be missing
 // on the yabridge library.
-char* (*remote_yabridge_version)() = nullptr;
+const char* (*remote_yabridge_version)() = nullptr;
 
 /**
  * The bridge instance for this chainloader. This is initialized when
@@ -164,7 +164,7 @@ extern "C" YABRIDGE_EXPORT PluginFactory* GetPluginFactory() {
  * wouldn't be very useful, and that would also cause the chainloader to be
  * rebuilt on every git commit in development.
  */
-extern "C" YABRIDGE_EXPORT char* yabridge_version() {
+extern "C" YABRIDGE_EXPORT const char* yabridge_version() {
     if (!initialize_library() || !remote_yabridge_version) {
         return nullptr;
     }

src/plugin/clap-plugin.cpp

@@ -18,6 +18,9 @@
 
 #include <clap/entry.h>
 
+// Generated inside of the build directory
+#include <version.h>
+
 #include "bridges/clap.h"
 
 using namespace std::literals::string_literals;
@@ -167,3 +170,11 @@ extern "C" YABRIDGE_EXPORT const void* yabridge_module_get_factory(
 
     return instance->get_factory(factory_id);
 }
+
+/**
+ * Returns the yabridge version in use. Can be queried by hosts through the
+ * chainloader. Both functions have the same name and signature.
+ */
+extern "C" YABRIDGE_EXPORT const char* yabridge_version() {
+    return yabridge_git_version;
+}

src/plugin/vst2-plugin.cpp

@@ -16,6 +16,9 @@
 
 #include <vestige/aeffectx.h>
 
+// Generated inside of the build directory
+#include <version.h>
+
 #include "../common/linking.h"
 #include "bridges/vst2.h"
 
@@ -130,3 +133,11 @@ extern "C" YABRIDGE_EXPORT AEffect* yabridge_plugin_init(
         return nullptr;
     }
 }
+
+/**
+ * Returns the yabridge version in use. Can be queried by hosts through the
+ * chainloader. Both functions have the same name and signature.
+ */
+extern "C" YABRIDGE_EXPORT const char* yabridge_version() {
+    return yabridge_git_version;
+}

src/plugin/vst3-plugin.cpp

@@ -14,6 +14,9 @@
 // You should have received a copy of the GNU General Public License
 // along with this program.  If not, see <https://www.gnu.org/licenses/>.
 
+// Generated inside of the build directory
+#include <version.h>
+
 #include "../common/linking.h"
 #include "bridges/vst3.h"
 
@@ -165,3 +168,11 @@ yabridge_module_get_plugin_factory(Vst3PluginBridge* instance) {
 
     return instance->get_plugin_factory();
 }
+
+/**
+ * Returns the yabridge version in use. Can be queried by hosts through the
+ * chainloader. Both functions have the same name and signature.
+ */
+extern "C" YABRIDGE_EXPORT const char* yabridge_version() {
+    return yabridge_git_version;
+}