diff --git a/c/r2dec-plugin.c b/c/r2dec-plugin.c
index 88e8abb..d1cdad9 100644
--- a/c/r2dec-plugin.c
+++ b/c/r2dec-plugin.c
@@ -258,7 +258,7 @@ RCorePlugin core_plugin_r2dec = {
 #ifdef _MSC_VER
 #define _R_API __declspec(dllexport)
 #else
-#define _R_API
+#define _R_API __attribute__((visibility("default")))
 #endif
 
 #ifndef CORELIB
diff --git a/meson.build b/meson.build
index 4f05508..13d50ee 100644
--- a/meson.build
+++ b/meson.build
@@ -10,7 +10,7 @@ libquickjs_dep = libquickjs_proj.get_variable('quickjs_dep')
 qjsc = libquickjs_proj.get_variable('qjsc')
 
 r2dec_incs = ['.', 'c']
-r2dec_c_args = []
+r2dec_c_args = ['-fvisibility=hidden', '-flto']
 r2dec_src = [
     'c' / 'r2dec.c',
     'c' / 'base64.c',
@@ -84,6 +84,7 @@ else
 
   shared_library('core_pdd', r2dec_src,
     c_args : r2dec_c_args,
+    link_args: ['-Wl,-Bsymbolic'],
     dependencies: r2dec_deps,
     include_directories: include_directories(r2dec_incs),
     implicit_include_directories: false,