40 lines
1.7 KiB
Diff
40 lines
1.7 KiB
Diff
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From 59673ed97d92df34d6f662da5a51f6e28806b5af Mon Sep 17 00:00:00 2001
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From: Tom Stellard <tstellar@redhat.com>
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Date: Thu, 26 Sep 2024 13:53:18 +0000
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Subject: [PATCH] [clang-shlib] Add symbol versioning to all symbols
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We do the same thing for libLLVM.so. This should help avoid issues
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when an applications loads two different versions of the library at
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the same time.
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---
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clang/tools/clang-shlib/CMakeLists.txt | 7 +++++++
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clang/tools/clang-shlib/simple_version_script.map.in | 1 +
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2 files changed, 8 insertions(+)
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create mode 100644 clang/tools/clang-shlib/simple_version_script.map.in
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diff --git a/clang/tools/clang-shlib/CMakeLists.txt b/clang/tools/clang-shlib/CMakeLists.txt
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index 298d3a9d18fe..004ce2897960 100644
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--- a/clang/tools/clang-shlib/CMakeLists.txt
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+++ b/clang/tools/clang-shlib/CMakeLists.txt
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@@ -61,3 +61,10 @@ if (MINGW OR CYGWIN)
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# make sure we export all symbols despite potential dllexports.
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target_link_options(clang-cpp PRIVATE LINKER:--export-all-symbols)
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endif()
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+
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+# Solaris ld does not accept global: *; so there is no way to version *all* global symbols
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+if (NOT LLVM_LINKER_IS_SOLARISLD AND NOT MINGW)
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+ configure_file(${CMAKE_CURRENT_SOURCE_DIR}/simple_version_script.map.in
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+ ${CMAKE_CURRENT_BINARY_DIR}/simple_version_script.map)
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+ target_link_options(clang-cpp PRIVATE -Wl,--version-script,${CMAKE_CURRENT_BINARY_DIR}/simple_version_script.map)
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+endif()
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diff --git a/clang/tools/clang-shlib/simple_version_script.map.in b/clang/tools/clang-shlib/simple_version_script.map.in
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new file mode 100644
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index 000000000000..cb2306d1f596
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--- /dev/null
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+++ b/clang/tools/clang-shlib/simple_version_script.map.in
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@@ -0,0 +1 @@
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+@LLVM_SHLIB_SYMBOL_VERSION@ { global: *; };
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--
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2.46.0
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