File clang-shlib-symbol-versioning.patch of Package llvm18

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File clang-shlib-symbol-versioning.patch of Package llvm18

diff --git a/clang/tools/clang-shlib/CMakeLists.txt b/clang/tools/clang-shlib/CMakeLists.txt
index 298d3a9d18fe..830f2b138ffa 100644
--- a/clang/tools/clang-shlib/CMakeLists.txt
+++ b/clang/tools/clang-shlib/CMakeLists.txt
@@ -48,6 +48,14 @@ add_clang_library(clang-cpp
                   ${_OBJECTS}
                   LINK_LIBS
                   ${_DEPS})
+
+configure_file(simple_version_script.map.in simple_version_script.map)
+
+if (NOT LLVM_LINKER_IS_SOLARISLD AND NOT MINGW)
+  # Solaris ld does not accept global: *; so there is no way to version *all* global symbols
+  target_link_options(clang-cpp PRIVATE LINKER:--version-script,${CMAKE_CURRENT_BINARY_DIR}/simple_version_script.map)
+endif()
+
 # Optimize function calls for default visibility definitions to avoid PLT and
 # reduce dynamic relocations.
 if (NOT APPLE AND NOT MINGW AND NOT LLVM_LINKER_IS_SOLARISLD_ILLUMOS)
diff --git a/clang/tools/clang-shlib/simple_version_script.map.in b/clang/tools/clang-shlib/simple_version_script.map.in
new file mode 100644
index 000000000000..cb2306d1f596
--- /dev/null
+++ b/clang/tools/clang-shlib/simple_version_script.map.in
@@ -0,0 +1 @@
+@LLVM_SHLIB_SYMBOL_VERSION@ { global: *; };

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File clang-shlib-symbol-versioning.patch of Package llvm18

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