Do not export symbols by default

This hides LLVM symbols (when linked statically), preventing conflicts with system LLVM (loaded by the OpenGL implementation).

Author: adazem009

CMakeLists.txt

@@ -82,6 +82,17 @@ target_sources(scratchcpp
 
 include(FetchContent)
 
+# Compiler options
+target_compile_options(scratchcpp PRIVATE
+    -fvisibility=hidden
+    -fvisibility-inlines-hidden
+)
+
+target_link_options(scratchcpp PRIVATE
+    -Wl,--exclude-libs,ALL
+    -Wl,-Bsymbolic
+)
+
 # zip
 include(build/zip.cmake)
 target_link_libraries(scratchcpp PRIVATE zip)