rec: meson build: export ffi symbols so they become available to Lua

Do that specifically (and unconditionally) for the ffi functions only,
we do not need to export everything like the autotools do with -rdynamic.

diff --git a/pdns/recursordist/meson.build b/pdns/recursordist/meson.build
index 5d8a970d7b96f784fc93a5828cf3e277b7750f2d..f134041ff1d8b4141ea910dde51951cf02a0e04b 100644 (file)
--- a/pdns/recursordist/meson.build
+++ b/pdns/recursordist/meson.build
@@ -18,7 +18,14 @@ meson.add_dist_script('meson-dist-script.sh')
 meson.add_dist_script('version.sh', 'set-dist', meson.project_version())
 
 add_project_arguments('-DRECURSOR', language: 'cpp')
-
+add_project_arguments(
+  '-Wshadow',
+  '-Wmissing-declarations',
+  '-Wredundant-decls',
+  '-Wno-ignored-attributes',
+  '-fvisibility=hidden',
+  language: ['c', 'cpp'],
+)
 
 product_source_dir = meson.current_source_dir()
 product_build_dir = meson.current_build_dir()
@@ -407,6 +414,10 @@ librec_common = declare_dependency(
 tools = {
   'pdns_recursor': {
     'main': src_dir / 'rec-main.cc',
+    'link-args': [
+       '-Wl,--export-dynamic-symbol=pdns_ffi_*',
+       '-Wl,--export-dynamic-symbol=pdns_postresolve_ffi_*',
+    ],
     'files-extra': [
       src_dir / 'capabilities.cc',
       src_dir / 'channel.cc',
@@ -542,6 +553,7 @@ foreach tool, info: tools
   main = files(info['main'])
 
   export_dynamic = 'export-dynamic' in info ? info['export-dynamic'] : false
+  link_args = 'link-args' in info ? info['link-args'] : []
   files_extra = 'files-extra' in info ? info['files-extra'] : []
   deps_extra = 'deps-extra' in info ? info['deps-extra'] : []
   install = 'install' in info ? info['install'] : false
@@ -555,6 +567,7 @@ foreach tool, info: tools
       config_h,
       files_extra,
       export_dynamic: export_dynamic,
+      link_args: link_args,
       dependencies: [
         librec_common,
         deps_extra,