[clang] [llvm] Reapply "[cmake] Add support for statically linking libxml2" (PR #192088)

Sun Apr 19 09:31:41 PDT 2026

llvm-ci wrote:

LLVM Buildbot has detected a new failure on builder `clang-sparc64-linux` running on `debian-stadler-sparc64` while building `clang,llvm` at step 6 "build stage 1".

Full details are available at: https://lab.llvm.org/buildbot/#/builders/114/builds/443

<details>
<summary>Here is the relevant piece of the build log for the reference</summary>

```
Step 6 (build stage 1) failure: 'ninja' (failure)
...
[1492/4290] Building CXX object tools/clang/lib/Basic/CMakeFiles/obj.clangBasic.dir/Targets/AArch64.cpp.o
[1493/4290] Building CXX object tools/clang/lib/Basic/CMakeFiles/obj.clangBasic.dir/Warnings.cpp.o
[1494/4290] Building CXX object tools/clang/lib/Basic/CMakeFiles/obj.clangBasic.dir/Targets/WebAssembly.cpp.o
[1495/4290] Building CXX object tools/clang/lib/Basic/CMakeFiles/obj.clangBasic.dir/Targets/Mips.cpp.o
[1496/4290] Building CXX object lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/NewGVN.cpp.o
[1497/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/LexHLSLRootSignature.cpp.o
[1498/4290] Building CXX object lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/LoopStrengthReduce.cpp.o
[1499/4290] Building CXX object tools/clang/lib/Basic/CMakeFiles/obj.clangBasic.dir/Targets/RISCV.cpp.o
[1500/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/DependencyDirectivesScanner.cpp.o
[1501/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/LiteralSupport.cpp.o
FAILED: [code=4] tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/LiteralSupport.cpp.o 
/usr/bin/c++ -DCLANG_EXPORTS -D_DEBUG -D_GLIBCXX_ASSERTIONS -D_GLIBCXX_USE_CXX11_ABI=1 -D_GNU_SOURCE -D_LIBCPP_HARDENING_MODE=_LIBCPP_HARDENING_MODE_EXTENSIVE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -I/var/lib/buildbot/workers/debian-stadler-sparc64/clang-sparc64-linux/stage1/tools/clang/lib/Lex -I/var/lib/buildbot/workers/debian-stadler-sparc64/clang-sparc64-linux/llvm/clang/lib/Lex -I/var/lib/buildbot/workers/debian-stadler-sparc64/clang-sparc64-linux/llvm/clang/include -I/var/lib/buildbot/workers/debian-stadler-sparc64/clang-sparc64-linux/stage1/tools/clang/include -I/var/lib/buildbot/workers/debian-stadler-sparc64/clang-sparc64-linux/stage1/include -I/var/lib/buildbot/workers/debian-stadler-sparc64/clang-sparc64-linux/llvm/llvm/include -fPIC -fno-semantic-interposition -fvisibility-inlines-hidden -Werror=date-time -Wall -Wextra -Wno-unused-parameter -Wwrite-strings -Wcast-qual -Wno-missing-field-initializers -pedantic -Wno-long-long -Wimplicit-fallthrough -Wno-maybe-uninitialized -Wno-nonnull -Wno-class-memaccess -Wno-dangling-reference -Wno-redundant-move -Wno-pessimizing-move -Wno-array-bounds -Wno-stringop-overread -Wno-dangling-pointer -Wno-noexcept-type -Wdelete-non-virtual-dtor -Wsuggest-override -Wno-comment -Wno-misleading-indentation -Wctad-maybe-unsupported -fdiagnostics-color -ffunction-sections -fdata-sections -fno-common -Woverloaded-virtual -O3 -DNDEBUG -std=c++17 -UNDEBUG -fno-exceptions -funwind-tables -fno-rtti -MD -MT tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/LiteralSupport.cpp.o -MF tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/LiteralSupport.cpp.o.d -o tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/LiteralSupport.cpp.o -c /var/lib/buildbot/workers/debian-stadler-sparc64/clang-sparc64-linux/llvm/clang/lib/Lex/LiteralSupport.cpp
c++: internal compiler error: Segmentation fault signal terminated program cc1plus
Please submit a full bug report, with preprocessed source (by using -freport-bug).
See <file:///usr/share/doc/gcc-15/README.Bugs> for instructions.
[1502/4290] Building CXX object lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/SimpleLoopUnswitch.cpp.o
[1503/4290] Building Opcodes.inc...
[1504/4290] Building CXX object tools/clang/lib/Basic/CMakeFiles/obj.clangBasic.dir/Targets/PPC.cpp.o
[1505/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/PPCallbacks.cpp.o
[1506/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/PPConditionalDirectiveRecord.cpp.o
[1507/4290] Building CXX object lib/Transforms/Scalar/CMakeFiles/LLVMScalarOpts.dir/SROA.cpp.o
[1508/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/MacroArgs.cpp.o
[1509/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/ScratchBuffer.cpp.o
[1510/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/MacroInfo.cpp.o
[1511/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/InitHeaderSearch.cpp.o
[1512/4290] Building CXX object tools/clang/lib/Basic/CMakeFiles/obj.clangBasic.dir/Targets/AVR.cpp.o
[1513/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/PreprocessingRecord.cpp.o
[1514/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/PPCaching.cpp.o
[1515/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/PreprocessorLexer.cpp.o
[1516/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/TokenConcatenation.cpp.o
[1517/4290] Building CXX object tools/clang/lib/Basic/CMakeFiles/obj.clangBasic.dir/Targets/X86.cpp.o
[1518/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/TokenLexer.cpp.o
[1519/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/Lexer.cpp.o
[1520/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/Pragma.cpp.o
[1521/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/PPExpressions.cpp.o
[1522/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/HeaderSearch.cpp.o
[1523/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/PPLexerChange.cpp.o
[1524/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/ModuleMapFile.cpp.o
[1525/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/Preprocessor.cpp.o
[1526/4290] Building CXX object lib/Bitcode/Writer/CMakeFiles/LLVMBitWriter.dir/BitcodeWriter.cpp.o
[1527/4290] Building CXX object tools/clang/lib/Basic/CMakeFiles/obj.clangBasic.dir/Targets.cpp.o
[1528/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/PPMacroExpansion.cpp.o
[1529/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/PPDirectives.cpp.o
[1530/4290] Building CXX object tools/clang/lib/Basic/CMakeFiles/obj.clangBasic.dir/Attributes.cpp.o
[1531/4290] Building CXX object tools/clang/lib/Lex/CMakeFiles/obj.clangLex.dir/ModuleMap.cpp.o
[1532/4290] Building CXX object tools/clang/lib/Basic/CMakeFiles/obj.clangBasic.dir/DiagnosticIDs.cpp.o
[1533/4290] Building CXX object lib/Analysis/CMakeFiles/LLVMAnalysis.dir/TargetLibraryInfo.cpp.o
[1534/4290] Building CXX object lib/Frontend/OpenMP/CMakeFiles/LLVMFrontendOpenMP.dir/OMPIRBuilder.cpp.o
ninja: build stopped: subcommand failed.

```

</details>

https://github.com/llvm/llvm-project/pull/192088