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serenity/Toolchain/Patches/llvm/0008-cmake-Support-building-shared-libLLVM-and-libClang-f.patch
2023-08-11 13:35:17 +02:00

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From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
From: Daniel Bertalan <dani@danielbertalan.dev>
Date: Mon, 18 Apr 2022 22:32:29 +0200
Subject: [PATCH] [cmake] Support building shared libLLVM and libClang for
SerenityOS
This patch tells CMake that the --whole-archive linker option should be
used for specifying the archives whose members will constitute these
shared libraries.
Symbol versioning is disabled, as the SerenityOS loader doesn't support
it, and the ELF sections that store version data would just waste space.
---
clang/tools/libclang/CMakeLists.txt | 2 +-
llvm/tools/llvm-shlib/CMakeLists.txt | 3 ++-
2 files changed, 3 insertions(+), 2 deletions(-)
diff --git a/clang/tools/libclang/CMakeLists.txt b/clang/tools/libclang/CMakeLists.txt
index 4f23065a2..f180d2229 100644
--- a/clang/tools/libclang/CMakeLists.txt
+++ b/clang/tools/libclang/CMakeLists.txt
@@ -97,7 +97,7 @@ if(MSVC)
set(LLVM_EXPORTED_SYMBOL_FILE)
endif()
-if (UNIX AND NOT APPLE)
+if (UNIX AND NOT APPLE AND (NOT "${CMAKE_SYSTEM_NAME}" STREQUAL "SerenityOS"))
set(LLVM_EXPORTED_SYMBOL_FILE)
set(USE_VERSION_SCRIPT ${LLVM_HAVE_LINK_VERSION_SCRIPT})
endif()
diff --git a/llvm/tools/llvm-shlib/CMakeLists.txt b/llvm/tools/llvm-shlib/CMakeLists.txt
index 90e290435..f72ca9646 100644
--- a/llvm/tools/llvm-shlib/CMakeLists.txt
+++ b/llvm/tools/llvm-shlib/CMakeLists.txt
@@ -40,6 +40,7 @@ if(LLVM_BUILD_LLVM_DYLIB)
OR ("${CMAKE_SYSTEM_NAME}" STREQUAL "Fuchsia")
OR ("${CMAKE_SYSTEM_NAME}" STREQUAL "DragonFly")
OR ("${CMAKE_SYSTEM_NAME}" STREQUAL "Android")
+ OR ("${CMAKE_SYSTEM_NAME}" STREQUAL "SerenityOS")
OR ("${CMAKE_SYSTEM_NAME}" STREQUAL "SunOS")) # FIXME: It should be "GNU ld for elf"
configure_file(
${CMAKE_CURRENT_SOURCE_DIR}/simple_version_script.map.in
@@ -47,7 +48,7 @@ if(LLVM_BUILD_LLVM_DYLIB)
# GNU ld doesn't resolve symbols in the version script.
set(LIB_NAMES -Wl,--whole-archive ${LIB_NAMES} -Wl,--no-whole-archive)
- if (NOT LLVM_LINKER_IS_SOLARISLD AND NOT MINGW)
+ if (NOT LLVM_LINKER_IS_SOLARISLD AND NOT MINGW AND (NOT "${CMAKE_SYSTEM_NAME}" STREQUAL "SerenityOS"))
# Solaris ld does not accept global: *; so there is no way to version *all* global symbols
set(LIB_NAMES -Wl,--version-script,${LLVM_LIBRARY_DIR}/tools/llvm-shlib/simple_version_script.map ${LIB_NAMES})
endif()