intercept: Remove much in the way of symbol visibility issues

Signed-off-by: Ikey Doherty <ikey@solus-project.com>

src/intercept/meson.build

@@ -6,10 +6,26 @@ if with_libintercept == true
         'main.c',
     ]
 
+    nica_build = static_library(
+        'nica',
+        sources: nica_sources,
+        include_directories: nica_includes,
+    )
+
+    link_nica = declare_dependency(
+        link_with: nica_build,
+        include_directories: nica_includes,
+    )
+
+
     main_intercept = shared_library(
         'lsi-intercept',
-        sources: intercept_sources + nica_sources,
+        sources: intercept_sources,
+        c_args: ['-fvisibility=hidden'],
         include_directories: nica_includes,
+        dependencies: [
+            link_nica,
+        ],
         install: true,
     )
 endif