Assertion failed: Pragma handler already exists for this identifier

[arrowd]

• Checked for duplicates

Describe the bug

After compiling from source and running cling I immediately get an "Assertion failed" crash:

Assertion failed: (!InsertNS->FindHandler(Handler->getName()) && "Pragma handler already exists for this identifier!"), function AddPragmaHandler, file /wrkdirs/usr/ports/lang/cling/work/llvm-project-cling-llvm18-20250207-01/clang/lib/Lex/Pragma.cpp, line 938.
 #0 0x0000000004921cd4 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/wrkdirs/usr/ports/lang/cling/work/stage/usr/local/bin/cling+0x4921cd4)
 #1 0x000000000492217b (/wrkdirs/usr/ports/lang/cling/work/stage/usr/local/bin/cling+0x492217b)
 #2 0x00000000049202dd llvm::sys::RunSignalHandlers() (/wrkdirs/usr/ports/lang/cling/work/stage/usr/local/bin/cling+0x49202dd)
 #3 0x0000000004922748 (/wrkdirs/usr/ports/lang/cling/work/stage/usr/local/bin/cling+0x4922748)
 #4 0x000000083036759c handle_signal /usr/src/lib/libthr/thread/thr_sig.c:0:3
 #5 0x0000000830366b6b thr_sighandler /usr/src/lib/libthr/thread/thr_sig.c:243:1
 #6 0x000000082eecd2d3 ([vdso]+0x2d3)
 #7 0x0000000836e7272a thr_kill /usr/obj/usr/src/amd64.amd64/lib/libsys/thr_kill.S:4:0
 #8 0x0000000831f483d4 _raise /usr/src/lib/libc/gen/raise.c:0:10
 #9 0x0000000831ffc949 abort /usr/src/lib/libc/stdlib/abort.c:67:17
#10 0x0000000831f2b9f1 (/lib/libc.so.7+0x9c9f1)
#11 0x000000000a142d4e clang::Preprocessor::AddPragmaHandler(llvm::StringRef, clang::PragmaHandler*) (/wrkdirs/usr/ports/lang/cling/work/stage/usr/local/bin/cling+0xa142d4e)
#12 0x00000000046cbc74 (/wrkdirs/usr/ports/lang/cling/work/stage/usr/local/bin/cling+0x46cbc74)
#13 0x0000000007c7b6b2 clang::Parser::initializePragmaHandlers() (/wrkdirs/usr/ports/lang/cling/work/stage/usr/local/bin/cling+0x7c7b6b2)
#14 0x0000000007cc6998 clang::Parser::Parser(clang::Preprocessor&, clang::Sema&, bool, bool) (/wrkdirs/usr/ports/lang/cling/work/stage/usr/local/bin/cling+0x7cc6998)
#15 0x00000000046c5935 cling::IncrementalParser::Initialize(llvm::SmallVectorImpl<llvm::PointerIntPair<cling::Transaction*, 2u, cling::IncrementalParser::EParseResult, llvm::PointerLikeTypeTraits<cling::Transaction*>, llvm::PointerIntPairInfo<cling::Transaction*, 2u, llvm::PointerLikeTypeTraits<cling::Transaction*>>>>&, bool) (/wrkdirs/usr/ports/lang/cling/work/stage/usr/local/bin/cling+0x46c5935)
#16 0x00000000046e8253 cling::Interpreter::Interpreter(int, char const* const*, char const*, std::__1::vector<std::__1::shared_ptr<clang::ModuleFileExtension>, std::__1::allocator<std::__1::shared_ptr<clang::ModuleFileExtension>>> const&, void*, bool, cling::Interpreter const*) (/wrkdirs/usr/ports/lang/cling/work/stage/usr/local/bin/cling+0x46e8253)
#17 0x000000000468800a (/wrkdirs/usr/ports/lang/cling/work/stage/usr/local/bin/cling+0x468800a)
#18 0x00000000047fc4ff main (/wrkdirs/usr/ports/lang/cling/work/stage/usr/local/bin/cling+0x47fc4ff)
#19 0x0000000831f1cee5 __libc_start1 /usr/src/lib/libc/csu/libc_start1.c:172:2
PLEASE submit a bug report to https://github.com/llvm/llvm-project/issues/ and include the crash backtrace.
Stack dump:
0.      Program arguments: /wrkdirs/usr/ports/lang/cling/work/stage/usr/local/bin/cling
Abort trap

Setup

1. Cling tag v1.2
2. LLVM tag cling-llvm18-20250207-01 (also tried top of the cling-llvm18 branch)
3. Operating system FreeBSD

CMake invocation:

		-DLLVM_EXTERNAL_PROJECTS=cling \
		-DLLVM_EXTERNAL_CLING_SOURCE_DIR=/path/to/cling \
		-DLLVM_ENABLE_PROJECTS="clang" \
		-DLLVM_TARGETS_TO_BUILD="host;NVPTX"

[ferdymercury]

Maybe @eamjensen or @devajithvs have an idea.

[ferdymercury]

Maybe this helps: https://sage.cct.lsu.edu/sbrandt/hpx-cling-jupyter/-/blob/d74740df1dea06d896ca59c6d3e2cb856dc46e2e/patches/clang_multi_parsers.diff ?

[arrowd]

It certainly improves the situation! Cling now starts with a suspicious warning

ERROR in cling::CIFactory::createCI():
  resource directory /wrkdirs/usr/ports/lang/cling/work/.build/lib/clang/18 not found!

It seems to work fine, but after typing .q it crashes with

[cling]$ .q
 #0 0x0000000001cc7269 llvm::sys::PrintStackTrace(llvm::raw_ostream&, int) (/usr/local/bin/cling+0x1cc7269)
 #1 0x0000000001cc50e7 llvm::sys::RunSignalHandlers() (/usr/local/bin/cling+0x1cc50e7)
 #2 0x0000000001cc7be7 (/usr/local/bin/cling+0x1cc7be7)
 #3 0x000000082867d5bc handle_signal /usr/src/lib/libthr/thread/thr_sig.c:0:3
 #4 0x000000082867cb8b thr_sighandler /usr/src/lib/libthr/thread/thr_sig.c:243:1
 #5 0x000000082774f2d3 ([vdso]+0x2d3)
 #6 0x00000000041043f6 clang::PragmaNamespace::RemovePragmaHandler(clang::PragmaHandler*) (/usr/local/bin/cling+0x41043f6)
 #7 0x00000000041083e7 clang::Preprocessor::RemovePragmaHandler(llvm::StringRef, clang::PragmaHandler*) (/usr/local/bin/cling+0x41083e7)
 #8 0x0000000003067f2a clang::Parser::resetPragmaHandlers() (/usr/local/bin/cling+0x3067f2a)
 #9 0x000000000309caf5 clang::Parser::~Parser() (/usr/local/bin/cling+0x309caf5)
#10 0x000000000309d28e clang::Parser::~Parser() (/usr/local/bin/cling+0x309d28e)
#11 0x0000000001bbfb23 cling::IncrementalParser::~IncrementalParser() (/usr/local/bin/cling+0x1bbfb23)
#12 0x0000000001bca218 cling::Interpreter::~Interpreter() (/usr/local/bin/cling+0x1bca218)
#13 0x0000000001c2b725 main (/usr/local/bin/cling+0x1c2b725)
#14 0x000000082e6d9414 __libc_start1 /usr/src/lib/libc/csu/libc_start1.c:172:2

It feels that these sort of problems arise because the LLVM source I'm using is not matching what Cling expects. But I fail to figure out the proper LLVM tag needed for v1.2

[ferdymercury]

Could you retry with branch ROOT-llvm18 on llvm-project and master on cling ?

[arrowd]

Here are patches I ended up with to make it work: freebsd/freebsd-ports@29d4ca6#diff-3550d82761cd363dfb84204b6d246f29c56fe7c8df7f3cca4c502300aadd5de7

I also noticed that Cling doesn't work at all if LLVM is built with assertions enabled.

[eamjensen]

Here are the patches and the Makefile which are currently required in order for build of root with builtin cling to succeed on FreeBSD: https://github.com/freebsd/freebsd-ports/tree/main/devel/root

Note that more patches were needed in the past, but these were adapted (and much improved) into the root source code thanks to @mkrzewic.

In particular, I also recall needing to hack my way around assertions, otherwise build of root would fail at “root cling stage 1” with assertions enabled.

I am very much in favor of getting cling into the ports tree on FreeBSD, such that root can simply be build with cling as a dependency!
Let me know if and how I can help

[arrowd]

I am very much in favor of getting cling into the ports tree on FreeBSD, such that root can simply be build with cling as a dependency!
Let me know if and how I can help

Well, it is in already. Try it out and let me know if we need to adapt it for Root.

[mkrzewic]

Hi, the recent FreeBSD patchset is easily grabbed from my root FreeBSD branch, I may have screwed up the author's id though (@eamjensen)

[ferdymercury]

Hi, the recent FreeBSD patchset is easily grabbed from my root FreeBSD branch, I may have screwed up the author's id though (@eamjensen)

Thanks! Would you like to propose a PullRequest to the root repository ? so that they stay in sync.

[mkrzewic]

@ferdymercury sure, just need to make sure it still builds :)

[eamjensen]

I took a stab at building ROOT on FreeBSD from within the ports tree (release 6.34.06 - "portrevision 0" - i.e. building from source https://root.cern/download/root_v6.34.06.source.tar.gz) with builtin_cling=OFF, builting_clang=OFF and builtin_llvm=OFF.

Made a few changes to the cling port

diff --git a/lang/cling/Makefile b/lang/cling/Makefile
index 1fd69a4ae..d6085e6ab 100644
--- a/lang/cling/Makefile
+++ b/lang/cling/Makefile
@@ -1,7 +1,7 @@
 PORTNAME=		cling
 DISTVERSIONPREFIX=	v
 DISTVERSION=		1.2
-PORTREVISION=		1
+PORTREVISION=		2
 CATEGORIES=		lang devel
 
 MAINTAINER=		arrowd@FreeBSD.org
@@ -23,12 +23,15 @@ CMAKE_SOURCE_PATH=${WRKSRC}/llvm/llvm
 CMAKE_ARGS=	-DLLVM_EXTERNAL_PROJECTS=cling \
 		-DLLVM_EXTERNAL_CLING_SOURCE_DIR=${WRKSRC} \
 		-DLLVM_ENABLE_PROJECTS="clang" \
-		-DLLVM_TARGETS_TO_BUILD="host;NVPTX"
+		-DLLVM_TARGETS_TO_BUILD="host;NVPTX" \
+		-DCLANG_INSTALL_PACKAGE_DIR="cling/lib/cmake/clang"
 # cling fails quickly with assertions enabled
 CMAKE_ARGS+=	-DLLVM_ENABLE_ASSERTIONS:BOOL=OFF
 
+PREFIX=	${LOCALBASE}/cling
+
 ALL_TARGET=	cling
-INSTALL_TARGET=	install-clang-resource-headers
+INSTALL_TARGET=	install-clang-cmake-exports install-clang-resource-headers install-cling-cmake-exports
 
 .include <bsd.port.pre.mk>
 
@@ -53,5 +56,6 @@ post-install:
 	@${MKDIR} ${STAGEDIR}${PREFIX}/include/cling
 	cd ${WRKSRC}/include/cling && \
 		${COPYTREE_SHARE} Interpreter ${STAGEDIR}${PREFIX}/include/cling
+	DESTDIR=${STAGEDIR} ${CMAKE_BIN} -P ${BUILD_WRKSRC}/tools/cling/cmake_install.cmake
 
 .include <bsd.port.post.mk>
diff --git a/lang/cling/pkg-plist b/lang/cling/pkg-plist
index b7a598087..b4c1ba5ed 100644
--- a/lang/cling/pkg-plist
+++ b/lang/cling/pkg-plist
@@ -1,3 +1,4 @@
+@dir include/cling/cint
 bin/cling
 cling/lib/clang/18/include/__clang_cuda_builtin_vars.h
 cling/lib/clang/18/include/__clang_cuda_cmath.h
@@ -221,6 +222,11 @@ cling/lib/clang/18/include/xsaveintrin.h
 cling/lib/clang/18/include/xsaveoptintrin.h
 cling/lib/clang/18/include/xsavesintrin.h
 cling/lib/clang/18/include/xtestintrin.h
+cling/lib/cmake/clang/AddClang.cmake
+cling/lib/cmake/clang/ClangConfig.cmake
+cling/lib/cmake/clang/ClangConfigVersion.cmake
+cling/lib/cmake/clang/ClangTargets-%%CMAKE_BUILD_TYPE%%.cmake
+cling/lib/cmake/clang/ClangTargets.cmake
 include/cling/Interpreter/AutoloadCallback.h
 include/cling/Interpreter/CIFactory.h
 include/cling/Interpreter/CMakeLists.txt
@@ -228,6 +234,7 @@ include/cling/Interpreter/CValuePrinter.h
 include/cling/Interpreter/ClangInternalState.h
 include/cling/Interpreter/ClingCodeCompleteConsumer.h
 include/cling/Interpreter/ClingOptions.h
+include/cling/Interpreter/ClingOptions.inc
 include/cling/Interpreter/ClingOptions.td
 include/cling/Interpreter/CompilationOptions.h
 include/cling/Interpreter/DynamicExprInfo.h
@@ -246,9 +253,55 @@ include/cling/Interpreter/RuntimeUniverse.h
 include/cling/Interpreter/Transaction.h
 include/cling/Interpreter/Value.h
 include/cling/Interpreter/Visibility.h
+include/cling/MetaProcessor/Display.h
+include/cling/MetaProcessor/InputValidator.h
+include/cling/MetaProcessor/MetaLexer.h
+include/cling/MetaProcessor/MetaParser.h
+include/cling/MetaProcessor/MetaProcessor.h
+include/cling/MetaProcessor/MetaSema.h
+include/cling/UserInterface/UserInterface.h
+include/cling/UserInterface/textinput/Callbacks.h
+include/cling/UserInterface/textinput/Color.h
+include/cling/UserInterface/textinput/Display.h
+include/cling/UserInterface/textinput/Editor.h
+include/cling/UserInterface/textinput/History.h
+include/cling/UserInterface/textinput/InputData.h
+include/cling/UserInterface/textinput/KeyBinding.h
+include/cling/UserInterface/textinput/Range.h
+include/cling/UserInterface/textinput/Reader.h
+include/cling/UserInterface/textinput/SignalHandler.h
+include/cling/UserInterface/textinput/StreamReader.h
+include/cling/UserInterface/textinput/StreamReaderUnix.h
+include/cling/UserInterface/textinput/StreamReaderWin.h
+include/cling/UserInterface/textinput/TerminalConfigUnix.h
+include/cling/UserInterface/textinput/TerminalDisplay.h
+include/cling/UserInterface/textinput/TerminalDisplayUnix.h
+include/cling/UserInterface/textinput/TerminalDisplayWin.h
+include/cling/UserInterface/textinput/Text.h
+include/cling/UserInterface/textinput/TextInput.h
+include/cling/UserInterface/textinput/TextInputContext.h
+include/cling/Utils/AST.h
+include/cling/Utils/Casting.h
+include/cling/Utils/Diagnostics.h
+include/cling/Utils/OrderedMap.h
+include/cling/Utils/Output.h
+include/cling/Utils/ParserStateRAII.h
+include/cling/Utils/Paths.h
+include/cling/Utils/Platform.h
+include/cling/Utils/SourceNormalization.h
+include/cling/Utils/UTF8.h
+include/cling/Utils/Utils.h
+include/cling/Utils/Validation.h
+lib/cmake/cling/ClingConfig.cmake
+lib/cmake/cling/ClingTargets-%%CMAKE_BUILD_TYPE%%.cmake
+lib/cmake/cling/ClingTargets.cmake
 lib/libcling.so
 lib/libcling.so.18.1
 lib/libclingDemoPlugin.so
 lib/libclingDemoPlugin.so.18.1
+lib/libclingInterpreter.a
 lib/libclingJupyter.so
 lib/libclingJupyter.so.18.1
+lib/libclingMetaProcessor.a
+lib/libclingUserInterface.a
+lib/libclingUtils.a

and managed to get past the CMake config stage with the following patches to the ROOT port:

diff --git a/devel/root/Makefile b/devel/root/Makefile
index 454b67fac..a84a8bb57 100644
--- a/devel/root/Makefile
+++ b/devel/root/Makefile
@@ -1,5 +1,6 @@
 PORTNAME=	root
 DISTVERSION=	6.34.06
+PORTREVISION=	1
 CATEGORIES=	devel science math parallel python
 MASTER_SITES=	https://root.cern/download/
 DISTFILES=	${PORTNAME}_v${DISTVERSION}.source${EXTRACT_SUFX}
@@ -16,14 +17,15 @@ BROKEN_i386=	std::uint64_t to std::size_t narrowing conversion issue introduced
 BUILD_AND_RUN_DEPENDS=	bash:shells/bash \
 		nlohmann-json>=3:devel/nlohmann-json
 BUILD_DEPENDS=	${BUILD_AND_RUN_DEPENDS}
-LIB_DEPENDS=	libfreetype.so:print/freetype2 \
+LIB_DEPENDS=	libcling.so:lang/cling \
+		libfreetype.so:print/freetype2 \
 		liblz4.so:archivers/liblz4 \
 		libpcre2-8.so:devel/pcre2 \
 		libxxhash.so:devel/xxhash \
 		libzstd.so:archivers/zstd
 RUN_DEPENDS=	${BUILD_AND_RUN_DEPENDS}
 
-USES=		cmake desktop-file-utils iconv shebangfix
+USES=		cmake desktop-file-utils iconv llvm:18 shebangfix
 
 SHEBANG_FILES=	main/python/rootbrowse.py \
 		main/python/rootcp.py \
@@ -47,9 +49,9 @@ SHEBANG_FILES=	main/python/rootbrowse.py \
 python_OLD_CMD+=	"/usr/bin/env @python@"
 
 # Flags and environment variables for building
-CMAKE_ON=	builtin_clang builtin_cling builtin_llvm builtin_openui5 fail-on-missing \
+CMAKE_ON=	builtin_openui5 fail-on-missing \
 		geom gnuinstall rpath shared soversion
-CMAKE_OFF=	arrow builtin_cfitsio builtin_cppzmq builtin_davix builtin_fftw3 \
+CMAKE_OFF=	arrow builtin_cfitsio builtin_clang builtin_cling builtin_llvm builtin_cppzmq builtin_davix builtin_fftw3 \
 		builtin_freetype builtin_ftgl builtin_gl2ps builtin_glew builtin_gsl \
 		builtin_lz4 builtin_lzma builtin_nlohmannjson builtin_openssl builtin_pcre \
 		builtin_tbb builtin_unuran builtin_vc builtin_vdt builtin_veccore \
diff --git a/devel/root/files/patch-core_CMakeLists.txt b/devel/root/files/patch-core_CMakeLists.txt
new file mode 100644
index 000000000..e621f78f7
--- /dev/null
+++ b/devel/root/files/patch-core_CMakeLists.txt
@@ -0,0 +1,17 @@
+--- core/CMakeLists.txt.orig	2025-05-01 13:58:22 UTC
++++ core/CMakeLists.txt
+@@ -42,6 +42,14 @@ if (CMAKE_SYSTEM_NAME MATCHES FreeBSD)
+ 
+ if (CMAKE_SYSTEM_NAME MATCHES FreeBSD)
+   target_link_libraries(Core PUBLIC util procstat)
++  find_package(zstd REQUIRED)
+ endif()
+ 
+ target_include_directories(Core PUBLIC
diff --git a/devel/root/files/patch-interpreter_CMakeLists.txt b/devel/root/files/patch-interpreter_CMakeLists.txt
new file mode 100644
index 000000000..2b808c1aa
--- /dev/null
+++ b/devel/root/files/patch-interpreter_CMakeLists.txt
@@ -0,0 +1,53 @@
+--- interpreter/CMakeLists.txt.orig    2025-05-01 14:20:53 UTC
++++ interpreter/CMakeLists.txt
+@@ -139,7 +139,7 @@ endif()
+   set(CMAKE_CXX_VISIBILITY_PRESET hidden)
+   set(CMAKE_C_VISIBILITY_PRESET hidden)
+ endif()
+-if (NOT MSVC AND NOT APPLE)
++if (NOT MSVC AND NOT APPLE AND NOT BSD)
+   # Requires the linker to resolve the symbol internally and prevents
+   # conflicts when linked with another software using also LLVM like in
+   # the problem reported for Julia in
+@@ -268,7 +268,7 @@ else()
+ else()
+   # Rely on llvm-config.
+   set(CONFIG_OUTPUT)
+-  find_program(LLVM_CONFIG NAMES "llvm-config-${ROOT_LLVM_VERSION_REQUIRED_MAJOR}" "llvm-config")
++  find_program(LLVM_CONFIG NAMES "llvm-config-${ROOT_LLVM_VERSION_REQUIRED_MAJOR}" "llvm-config${ROOT_LLVM_VERSION_REQUIRED_MAJOR}" "llvm-config")
+   if(LLVM_CONFIG)
+     message(STATUS "Found LLVM_CONFIG as ${LLVM_CONFIG}")
+     set(CONFIG_COMMAND ${LLVM_CONFIG}
+@@ -477,7 +477,13 @@ else()
+     ${Clang_DIR}/include
+     CACHE STRING "Clang include directories.")
+ else()
+-  set(Clang_DIR "${LLVM_BINARY_DIR}/lib/cmake/clang/")
++#  set(Clang_DIR "${LLVM_BINARY_DIR}/lib/cmake/clang/")
++#  message(NOTICE "Clang_DIR: ${Clang_DIR}")
++#  if(NOT Clang_DIR)
++#    # set(Clang_DIR ${CMAKE_INSTALL_PREFIX}/cling/lib/cmake/clang CACHE STRING "Directory containing file ClangConfig.cmake (PROVIDED WITH CLING)" FORCE)
++  set(Clang_DIR ${LLVM_BINARY_DIR}/lib/cmake/clang/ CACHE STRING "Directory containing file ClangConfig.cmake" FORCE)
++#  endif()
++#  message(STATUS "Directory containing file ClangConfig.cmake (PROVIDED WITH CLING) set to ${Clang_DIR} [cache variable]")
+ endif()
+ 
+ # Reset the compiler flags after compiling LLVM and Clang
+@@ -541,9 +547,15 @@ else()
+     endif()
+   endif()
+ else()
+-  set(Cling_DIR ${LLVM_BINARY_DIR}/lib/cmake/cling/)
++  if(NOT Cling_DIR)
++    set(Cling_DIR ${CMAKE_INSTALL_PREFIX}/lib/cmake/cling CACHE STRING "Directory containing file ClingConfig.cmake" FORCE)
++  endif()
++  message(STATUS "Directory containing file ClingConfig.cmake set to ${Cling_DIR} [cache variable]")
++    
++  # set(Cling_DIR ${LLVM_BINARY_DIR}/lib/cmake/cling/)
+   find_package(Cling REQUIRED CONFIG PATHS ${Cling_DIR} "${Cling_DIR}/lib/cmake/cling" "${Cling_DIR}/cmake" NO_DEFAULT_PATH)
+-  find_package(Clang REQUIRED CONFIG PATHS ${Cling_DIR} "${Cling_DIR}/lib/cmake/clang" "${Cling_DIR}/cmake" NO_DEFAULT_PATH)
++  # find_package(Clang REQUIRED CONFIG PATHS ${Cling_DIR} "${Cling_DIR}/lib/cmake/clang" "${Cling_DIR}/cmake" NO_DEFAULT_PATH)
++  find_package(Clang REQUIRED CONFIG PATHS ${Clang_DIR} "${Clang_DIR}/lib/cmake/clang" "${Clang_DIR}/cmake" NO_DEFAULT_PATH)
+ 
+   # We need to consider not just the direct link dependencies, but also the
+   # transitive link dependencies. Do this by starting with the set of direct

Note that I do a bit of hackery, which may not achieve what is intented, to interpreter/CMakeLists.txt.

If I do not do find_package(zstd) (lowercase, rather than uppercase elsewhere in the ROOT CMake config) somewhere "post-interpreter/CMakeLists.txt", then the following error is emitted right afther the config stage ("post-config"/"pre-build"):

[...]

Running /wrkdirs/usr/ports/devel/root/work/root-6.34.06/cmake/unix/compiledata.sh
Making /wrkdirs/usr/ports/devel/root/work/.build/ginclude/compiledata.h
-- ROOT Configuration 

System:            FreeBSD-14.2-RELEASE-p3
ROOT Platform:     freebsd
ROOT Architecture: freebsdamd64
Processor:         32 core 0 MHz  (amd64)
Build type:        Release
Install path:      /usr/local
Compiler:          Clang 18.1.8
C++ standard:      17   
Compiler flags:
-- 
 - C:                         -O2 -pipe  -DLIBICONV_PLUG -fstack-protector-strong -fno-strict-aliasing -fcolor-diagnostics -pipe -Wall -W -pthread
 - C (build type specific):   -O2 -pipe  -DLIBICONV_PLUG -fstack-protector-strong -fno-strict-aliasing  -DNDEBUG
 - C++:                       -O2 -pipe -DLIBICONV_PLUG -fstack-protector-strong -fno-strict-aliasing  -DLIBICONV_PLUG -fcolor-diagnostics -Wc++11-narrowing -Wsign-compare -Wsometimes-uninitialized -Wconditional-uninitialized -Wheader-guard -Warray-bounds -Wcomment -Wtautological-compare -Wstrncat-size -Wloop-analysis -Wbool-conversion -pipe  -Wall -W -Woverloaded-virtual -fsigned-char -pthread
 - C++ (build type specific): -O2 -pipe -DLIBICONV_PLUG -fstack-protector-strong -fno-strict-aliasing  -DLIBICONV_PLUG  -DNDEBUG
-- Linker flags:
 - Executable:       -fstack-protector-strong -rdynamic
 - Module:           -fstack-protector-strong
 - Shared:           -fstack-protector-strong -Wl,--no-undefined

-- Enabled support for:  asimage builtin_openui5 dataframe davix fitsio gdml geom gnuinstall http imt mathmore opengl pyroot roofit root7 rpath shared soversion spectrum ssl tmva tmva-cpu tmva-cudnn tmva-pymva tpython use_gsl_cblas vdt webgui x11 xml xrootd
-- Configuring done (5.8s)
CMake Error at cmake/modules/RootMacros.cmake:1408 (target_link_libraries):
  Target "rootcling_stage1" links to:

    zstd::libzstd_shared

  but the target was not found.  Possible reasons include:

    * There is a typo in the target name.
    * A find_package call is missing for an IMPORTED target.
    * An ALIAS target is missing.

Call Stack (most recent call first):
  core/rootcling_stage1/CMakeLists.txt:27 (ROOT_EXECUTABLE)


CMake Error at cmake/modules/RootMacros.cmake:913 (target_link_libraries):
  Target "Cling" links to:

    zstd::libzstd_shared

  but the target was not found.  Possible reasons include:

    * There is a typo in the target name.
    * A find_package call is missing for an IMPORTED target.
    * An ALIAS target is missing.

Call Stack (most recent call first):
  core/metacling/src/CMakeLists.txt:112 (ROOT_LINKER_LIBRARY)


-- Generating done (0.5s)
CMake Generate step failed.  Build files cannot be regenerated correctly.
*** Error code 1

With this additional find_package(zstd) config succeeds, and I get the following error during (single-threaded) build:

[...]

[ 66% 5257/7918] /usr/local/llvm18/bin/clang++  -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/foundation/v7/inc -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/foundation/inc -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/foundation/res -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/cont/inc -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/clingutils/res -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/clingutils/inc -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/clib/inc -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/base/v7/inc -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/base/inc -I/wrkdirs/usr/ports/devel/root/work/.build/ginclude -O2 -pipe -DLIBICONV_PLUG -fstack-protector-strong -fno-strict-aliasing  -DLIBICONV_PLUG -fcolor-diagnostics -Wc++11-narrowing -Wsign-compare -Wsometimes-uninitialized -Wconditional-uninitialized -Wheader-guard -Warray-bounds -Wcomment -Wtautological-compare -Wstrncat-size -Wloop-analysis -Wbool-conversion -pipe  -Wall -W -Woverloaded-virtual -fsigned-char -pthread -O2 -pipe -DLIBICONV_PLUG -fstack-protector-strong -fno-strict-aliasing  -DLIBICONV_PLUG  -DNDEBUG -std=c++17 -fPIC -fvisibility-inlines-hidden -MD -MT core/foundation/CMakeFiles/Foundation_Stage1.dir/src/TClassEdit.cxx.o -MF core/foundation/CMakeFiles/Foundation_Stage1.dir/src/TClassEdit.cxx.o.d -o core/foundation/CMakeFiles/Foundation_Stage1.dir/src/TClassEdit.cxx.o -c /wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/foundation/src/TClassEdit.cxx
[ 66% 5258/7918] /usr/local/llvm18/bin/clang++  -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/foundation/v7/inc -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/foundation/inc -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/foundation/res -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/cont/inc -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/clingutils/res -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/clingutils/inc -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/clib/inc -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/base/v7/inc -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/base/inc -I/wrkdirs/usr/ports/devel/root/work/.build/ginclude -O2 -pipe -DLIBICONV_PLUG -fstack-protector-strong -fno-strict-aliasing  -DLIBICONV_PLUG -fcolor-diagnostics -Wc++11-narrowing -Wsign-compare -Wsometimes-uninitialized -Wconditional-uninitialized -Wheader-guard -Warray-bounds -Wcomment -Wtautological-compare -Wstrncat-size -Wloop-analysis -Wbool-conversion -pipe  -Wall -W -Woverloaded-virtual -fsigned-char -pthread -O2 -pipe -DLIBICONV_PLUG -fstack-protector-strong -fno-strict-aliasing  -DLIBICONV_PLUG  -DNDEBUG -std=c++17 -fPIC -fvisibility-inlines-hidden -MD -MT core/foundation/CMakeFiles/Foundation_Stage1.dir/src/TError.cxx.o -MF core/foundation/CMakeFiles/Foundation_Stage1.dir/src/TError.cxx.o.d -o core/foundation/CMakeFiles/Foundation_Stage1.dir/src/TError.cxx.o -c /wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/foundation/src/TError.cxx
[ 66% 5259/7918] /usr/local/llvm18/bin/clang++  -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/foundation/v7/inc -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/foundation/inc -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/foundation/res -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/cont/inc -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/clingutils/res -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/clingutils/inc -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/clib/inc -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/base/v7/inc -I/wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/base/inc -I/wrkdirs/usr/ports/devel/root/work/.build/ginclude -O2 -pipe -DLIBICONV_PLUG -fstack-protector-strong -fno-strict-aliasing  -DLIBICONV_PLUG -fcolor-diagnostics -Wc++11-narrowing -Wsign-compare -Wsometimes-uninitialized -Wconditional-uninitialized -Wheader-guard -Warray-bounds -Wcomment -Wtautological-compare -Wstrncat-size -Wloop-analysis -Wbool-conversion -pipe  -Wall -W -Woverloaded-virtual -fsigned-char -pthread -O2 -pipe -DLIBICONV_PLUG -fstack-protector-strong -fno-strict-aliasing  -DLIBICONV_PLUG  -DNDEBUG -std=c++17 -fPIC -fvisibility-inlines-hidden -MD -MT core/foundation/CMakeFiles/Foundation_Stage1.dir/v7/src/RError.cxx.o -MF core/foundation/CMakeFiles/Foundation_Stage1.dir/v7/src/RError.cxx.o.d -o core/foundation/CMakeFiles/Foundation_Stage1.dir/v7/src/RError.cxx.o -c /wrkdirs/usr/ports/devel/root/work/root-6.34.06/core/foundation/v7/src/RError.cxx
[ 66% 5260/7918] : && /usr/local/llvm18/bin/clang++ -O2 -pipe -DLIBICONV_PLUG -fstack-protector-strong -fno-strict-aliasing  -DLIBICONV_PLUG -fcolor-diagnostics -Wc++11-narrowing -Wsign-compare -Wsometimes-uninitialized -Wconditional-uninitialized -Wheader-guard -Warray-bounds -Wcomment -Wtautological-compare -Wstrncat-size -Wloop-analysis -Wbool-conversion -pipe  -Wall -W -Woverloaded-virtual -fsigned-char -pthread -O2 -pipe -DLIBICONV_PLUG -fstack-protector-strong -fno-strict-aliasing  -DLIBICONV_PLUG  -DNDEBUG -fstack-protector-strong -rdynamic    -Xlinker --dependency-file=core/rootcling_stage1/CMakeFiles/rootcling_stage1.dir/link.d core/clib/CMakeFiles/Clib.dir/src/attach.c.o core/clib/CMakeFiles/Clib.dir/src/detach.c.o core/clib/CMakeFiles/Clib.dir/src/getpagesize.c.o core/clib/CMakeFiles/Clib.dir/src/keys.c.o core/clib/CMakeFiles/Clib.dir/src/mcalloc.c.o core/clib/CMakeFiles/Clib.dir/src/mfree.c.o core/clib/CMakeFiles/Clib.dir/src/mmalloc.c.o core/clib/CMakeFiles/Clib.dir/src/mmapsup.c.o core/clib/CMakeFiles/Clib.dir/src/mmcheck.c.o core/clib/CMakeFiles/Clib.dir/src/mrealloc.c.o core/clib/CMakeFiles/Clib.dir/src/sbrksup.c.o core/clib/CMakeFiles/Clib.dir/src/snprintf.c.o core/clib/CMakeFiles/Clib.dir/src/strlcat.c.o core/clib/CMakeFiles/Clib.dir/src/strlcpy.c.o core/clingutils/CMakeFiles/ClingUtils.dir/src/RStl.cxx.o core/clingutils/CMakeFiles/ClingUtils.dir/src/TClingUtils.cxx.o core/dictgen/CMakeFiles/Dictgen.dir/src/BaseSelectionRule.cxx.o core/dictgen/CMakeFiles/Dictgen.dir/src/ClassSelectionRule.cxx.o core/dictgen/CMakeFiles/Dictgen.dir/src/DictSelectionReader.cxx.o core/dictgen/CMakeFiles/Dictgen.dir/src/LinkdefReader.cxx.o core/dictgen/CMakeFiles/Dictgen.dir/src/rootcling_impl.cxx.o core/dictgen/CMakeFiles/Dictgen.dir/src/Scanner.cxx.o core/dictgen/CMakeFiles/Dictgen.dir/src/SelectionRules.cxx.o core/dictgen/CMakeFiles/Dictgen.dir/src/TModuleGenerator.cxx.o core/dictgen/CMakeFiles/Dictgen.dir/src/VariableSelectionRule.cxx.o core/dictgen/CMakeFiles/Dictgen.dir/src/XMLReader.cxx.o core/foundation/CMakeFiles/Foundation_Stage1.dir/src/FoundationUtils.cxx.o core/foundation/CMakeFiles/Foundation_Stage1.dir/src/RConversionRuleParser.cxx.o core/foundation/CMakeFiles/Foundation_Stage1.dir/src/RLogger.cxx.o core/foundation/CMakeFiles/Foundation_Stage1.dir/src/StringUtils.cxx.o core/foundation/CMakeFiles/Foundation_Stage1.dir/src/TClassEdit.cxx.o core/foundation/CMakeFiles/Foundation_Stage1.dir/src/TError.cxx.o core/foundation/CMakeFiles/Foundation_Stage1.dir/v7/src/RError.cxx.o core/rootcling_stage1/CMakeFiles/rootcling_stage1.dir/src/rootcling_stage1.cxx.o -o core/rootcling_stage1/src/rootcling_stage1 -L/usr/local/llvm18/lib -Wl,-rpath,/usr/local/llvm18/lib:/usr/local/lib  /usr/local/lib/libclingInterpreter.a  /usr/local/lib/libclingMetaProcessor.a  /usr/local/lib/libclingUtils.a  /usr/local/lib/libclingMetaProcessor.a  /usr/local/llvm18/lib/libclangLex.a  /usr/local/llvm18/lib/libclangAST.a  /usr/local/llvm18/lib/libclangBasic.a  /usr/local/lib/libclingInterpreter.a  /usr/local/lib/libclingUtils.a  /usr/local/llvm18/lib/libLLVMCore.a  /usr/local/llvm18/lib/libLLVMSupport.a  /usr/local/llvm18/lib/libLLVMBinaryFormat.a  /usr/local/llvm18/lib/libclangCodeGen.a  /usr/local/llvm18/lib/libclangDriver.a  /usr/local/llvm18/lib/libclangFrontend.a  /usr/local/llvm18/lib/libclangParse.a  /usr/local/llvm18/lib/libclangSema.a  /usr/local/llvm18/lib/libclangAnalysis.a  /usr/local/llvm18/lib/libclangEdit.a  /usr/local/llvm18/lib/libclangRewrite.a  /usr/local/llvm18/lib/libclangRewriteFrontend.a  /usr/local/llvm18/lib/libclangSerialization.a  -lprocstat  -lutil  /usr/local/llvm18/lib/libLLVMAnalysis.a  /usr/local/llvm18/lib/libLLVMCoroutines.a  /usr/local/llvm18/lib/libLLVMCoverage.a  /usr/local/llvm18/lib/libLLVMExecutionEngine.a  /usr/local/llvm18/lib/libLLVMipo.a  /usr/local/llvm18/lib/libLLVMJITLink.a  /usr/local/llvm18/lib/libLLVMLTO.a  /usr/local/llvm18/lib/libLLVMMC.a  /usr/local/llvm18/lib/libLLVMObject.a  /usr/local/llvm18/lib/libLLVMOption.a  /usr/local/llvm18/lib/libLLVMOrcJIT.a  /usr/local/llvm18/lib/libLLVMRuntimeDyld.a  /usr/local/llvm18/lib/libLLVMScalarOpts.a  /usr/local/llvm18/lib/libLLVMTarget.a  /usr/local/llvm18/lib/libLLVMTransformUtils.a  /usr/local/llvm18/lib/libLLVMNVPTXCodeGen.a  /usr/local/llvm18/lib/libLLVMNVPTXDesc.a  /usr/local/llvm18/lib/libLLVMNVPTXInfo.a  /usr/local/llvm18/lib/libLLVMX86CodeGen.a  /usr/local/llvm18/lib/libLLVMX86AsmParser.a  /usr/local/llvm18/lib/libLLVMX86Desc.a  /usr/local/llvm18/lib/libLLVMX86Disassembler.a  /usr/local/llvm18/lib/libLLVMX86Info.a  -ldl  -lpthread  /usr/local/llvm18/lib/libLLVMDemangle.a  /usr/local/llvm18/lib/libLLVMRemarks.a  /usr/local/llvm18/lib/libLLVMTargetParser.a  -lrt  -lexecinfo  -lm  /usr/lib/libz.so  /usr/local/llvm18/lib/libclangAPINotes.a  /usr/local/llvm18/lib/libclangSupport.a  /usr/local/llvm18/lib/libclangASTMatchers.a  /usr/local/llvm18/lib/libLLVMProfileData.a  /usr/local/llvm18/lib/libLLVMOrcTargetProcess.a  /usr/local/llvm18/lib/libLLVMAggressiveInstCombine.a  /usr/local/llvm18/lib/libLLVMBitReader.a  /usr/local/llvm18/lib/libLLVMBitWriter.a  /usr/local/llvm18/lib/libLLVMFrontendOpenMP.a  /usr/local/llvm18/lib/libLLVMInstCombine.a  /usr/local/llvm18/lib/libLLVMIRReader.a  /usr/local/llvm18/lib/libLLVMLinker.a  /usr/local/llvm18/lib/libLLVMVectorize.a  /usr/local/llvm18/lib/libLLVMInstrumentation.a  /usr/local/llvm18/lib/libLLVMObject.a  /usr/local/llvm18/lib/libLLVMOrcShared.a  /usr/local/llvm18/lib/libLLVMOrcTargetProcess.a  /usr/local/llvm18/lib/libLLVMSupport.a  /usr/local/llvm18/lib/libLLVMTargetParser.a  /usr/local/llvm18/lib/libLLVMCodeGen.a  /usr/local/llvm18/lib/libLLVMCodeGenTypes.a  /usr/local/llvm18/lib/libLLVMExtensions.a  /usr/local/llvm18/lib/libLLVMObjCARCOpts.a  /usr/local/llvm18/lib/libLLVMPasses.a  /usr/local/llvm18/lib/libLLVMDebugInfoCodeView.a  /usr/local/llvm18/lib/libLLVMMCParser.a  /usr/local/llvm18/lib/libLLVMTextAPI.a  /usr/local/llvm18/lib/libLLVMAnalysis.a  /usr/local/llvm18/lib/libLLVMBitReader.a  /usr/local/llvm18/lib/libLLVMBitWriter.a  /usr/local/llvm18/lib/libLLVMPasses.a  /usr/local/llvm18/lib/libLLVMOrcShared.a  /usr/local/llvm18/lib/libLLVMWindowsDriver.a  /usr/local/llvm18/lib/libLLVMAsmPrinter.a  /usr/local/llvm18/lib/libLLVMSelectionDAG.a  /usr/local/llvm18/lib/libLLVMCFGuard.a  /usr/local/llvm18/lib/libLLVMGlobalISel.a  /usr/local/llvm18/lib/libLLVMIRPrinter.a  /usr/local/llvm18/lib/libLLVMMCDisassembler.a  /usr/local/llvm18/lib/libLLVMBitstreamReader.a  /usr/local/llvm18/lib/libLLVMSymbolize.a  /usr/local/llvm18/lib/libLLVMDebugInfoDWARF.a  /usr/local/llvm18/lib/libLLVMFrontendOffloading.a  /usr/local/llvm18/lib/libLLVMAsmParser.a  /usr/local/llvm18/lib/libPolly.a  /usr/local/llvm18/lib/libLLVMHipStdPar.a  /usr/local/llvm18/lib/libLLVMDebugInfoPDB.a  /usr/local/llvm18/lib/libLLVMDebugInfoBTF.a  /usr/local/llvm18/lib/libPollyISL.a  /usr/local/llvm18/lib/libLLVMDebugInfoMSF.a  -lpthread  -lutil  -lprocstat  -lutil  /usr/local/llvm18/lib/libclangFrontend.a  /usr/local/llvm18/lib/libclangDriver.a  /usr/local/llvm18/lib/libclangParse.a  /usr/local/llvm18/lib/libclangRewrite.a  /usr/local/llvm18/lib/libclangSerialization.a  /usr/local/llvm18/lib/libclangSema.a  /usr/local/llvm18/lib/libclangAnalysis.a  /usr/local/llvm18/lib/libclangASTMatchers.a  /usr/local/llvm18/lib/libclangEdit.a  /usr/local/llvm18/lib/libclangAPINotes.a  /usr/local/llvm18/lib/libclangSupport.a  /usr/local/llvm18/lib/libLLVMExecutionEngine.a  /usr/local/llvm18/lib/libLLVMJITLink.a  /usr/local/llvm18/lib/libLLVMOrcTargetProcess.a  /usr/local/llvm18/lib/libLLVMOrcShared.a  /usr/local/llvm18/lib/libLLVMPasses.a  /usr/local/llvm18/lib/libLLVMCoroutines.a  /usr/local/llvm18/lib/libLLVMHipStdPar.a  /usr/local/llvm18/lib/libLLVMOption.a  /usr/local/llvm18/lib/libLLVMRuntimeDyld.a  /usr/local/llvm18/lib/libLLVMipo.a  /usr/local/llvm18/lib/libLLVMFrontendOpenMP.a  /usr/local/llvm18/lib/libLLVMFrontendOffloading.a  /usr/local/llvm18/lib/libLLVMLinker.a  /usr/local/llvm18/lib/libLLVMVectorize.a  /usr/local/llvm18/lib/libLLVMInstrumentation.a  /usr/local/llvm18/lib/libLLVMCFGuard.a  /usr/local/llvm18/lib/libLLVMSelectionDAG.a  /usr/local/llvm18/lib/libLLVMCodeGen.a  /usr/local/llvm18/lib/libLLVMScalarOpts.a  /usr/local/llvm18/lib/libLLVMAggressiveInstCombine.a  /usr/local/llvm18/lib/libLLVMInstCombine.a  /usr/local/llvm18/lib/libLLVMTarget.a  /usr/local/llvm18/lib/libLLVMBitWriter.a  /usr/local/llvm18/lib/libLLVMObjCARCOpts.a  /usr/local/llvm18/lib/libLLVMTransformUtils.a  /usr/local/llvm18/lib/libLLVMIRPrinter.a  /usr/local/llvm18/lib/libLLVMAnalysis.a  /usr/local/llvm18/lib/libLLVMProfileData.a  /usr/local/llvm18/lib/libLLVMSymbolize.a  /usr/local/llvm18/lib/libLLVMDebugInfoPDB.a  /usr/local/llvm18/lib/libLLVMDebugInfoMSF.a  /usr/local/llvm18/lib/libLLVMDebugInfoBTF.a  /usr/local/llvm18/lib/libLLVMDebugInfoDWARF.a  /usr/local/llvm18/lib/libLLVMObject.a  /usr/local/llvm18/lib/libLLVMIRReader.a  /usr/local/llvm18/lib/libLLVMBitReader.a  /usr/local/llvm18/lib/libLLVMAsmParser.a  /usr/local/llvm18/lib/libLLVMTextAPI.a  /usr/local/llvm18/lib/libLLVMMCParser.a  /usr/local/llvm18/lib/libLLVMCodeGenTypes.a  /usr/local/llvm18/lib/libLLVMMC.a  /usr/local/llvm18/lib/libLLVMDebugInfoCodeView.a  /usr/local/llvm18/lib/libclangAST.a  /usr/local/llvm18/lib/libclangLex.a  /usr/local/llvm18/lib/libclangBasic.a  /usr/local/llvm18/lib/libLLVM.so.18.1  /usr/local/llvm18/lib/libLLVMCore.a  /usr/local/llvm18/lib/libLLVMRemarks.a  /usr/local/llvm18/lib/libLLVMBitstreamReader.a  /usr/local/llvm18/lib/libLLVMBinaryFormat.a  /usr/local/llvm18/lib/libLLVMTargetParser.a  /usr/local/llvm18/lib/libLLVMSupport.a  /usr/local/llvm18/lib/libLLVMDemangle.a  -lrt  -lexecinfo  -lpthread  -lm  /usr/lib/libz.so  /usr/local/lib/libzstd.so.1.5.7  -pthread && :
FAILED: core/rootcling_stage1/src/rootcling_stage1 
: && /usr/local/llvm18/bin/clang++ -O2 -pipe -DLIBICONV_PLUG -fstack-protector-strong -fno-strict-aliasing  -DLIBICONV_PLUG -fcolor-diagnostics -Wc++11-narrowing -Wsign-compare -Wsometimes-uninitialized -Wconditional-uninitialized -Wheader-guard -Warray-bounds -Wcomment -Wtautological-compare -Wstrncat-size -Wloop-analysis -Wbool-conversion -pipe  -Wall -W -Woverloaded-virtual -fsigned-char -pthread -O2 -pipe -DLIBICONV_PLUG -fstack-protector-strong -fno-strict-aliasing  -DLIBICONV_PLUG  -DNDEBUG -fstack-protector-strong -rdynamic    -Xlinker --dependency-file=core/rootcling_stage1/CMakeFiles/rootcling_stage1.dir/link.d core/clib/CMakeFiles/Clib.dir/src/attach.c.o core/clib/CMakeFiles/Clib.dir/src/detach.c.o core/clib/CMakeFiles/Clib.dir/src/getpagesize.c.o core/clib/CMakeFiles/Clib.dir/src/keys.c.o core/clib/CMakeFiles/Clib.dir/src/mcalloc.c.o core/clib/CMakeFiles/Clib.dir/src/mfree.c.o core/clib/CMakeFiles/Clib.dir/src/mmalloc.c.o core/clib/CMakeFiles/Clib.dir/src/mmapsup.c.o core/clib/CMakeFiles/Clib.dir/src/mmcheck.c.o core/clib/CMakeFiles/Clib.dir/src/mrealloc.c.o core/clib/CMakeFiles/Clib.dir/src/sbrksup.c.o core/clib/CMakeFiles/Clib.dir/src/snprintf.c.o core/clib/CMakeFiles/Clib.dir/src/strlcat.c.o core/clib/CMakeFiles/Clib.dir/src/strlcpy.c.o core/clingutils/CMakeFiles/ClingUtils.dir/src/RStl.cxx.o core/clingutils/CMakeFiles/ClingUtils.dir/src/TClingUtils.cxx.o core/dictgen/CMakeFiles/Dictgen.dir/src/BaseSelectionRule.cxx.o core/dictgen/CMakeFiles/Dictgen.dir/src/ClassSelectionRule.cxx.o core/dictgen/CMakeFiles/Dictgen.dir/src/DictSelectionReader.cxx.o core/dictgen/CMakeFiles/Dictgen.dir/src/LinkdefReader.cxx.o core/dictgen/CMakeFiles/Dictgen.dir/src/rootcling_impl.cxx.o core/dictgen/CMakeFiles/Dictgen.dir/src/Scanner.cxx.o core/dictgen/CMakeFiles/Dictgen.dir/src/SelectionRules.cxx.o core/dictgen/CMakeFiles/Dictgen.dir/src/TModuleGenerator.cxx.o core/dictgen/CMakeFiles/Dictgen.dir/src/VariableSelectionRule.cxx.o core/dictgen/CMakeFiles/Dictgen.dir/src/XMLReader.cxx.o core/foundation/CMakeFiles/Foundation_Stage1.dir/src/FoundationUtils.cxx.o core/foundation/CMakeFiles/Foundation_Stage1.dir/src/RConversionRuleParser.cxx.o core/foundation/CMakeFiles/Foundation_Stage1.dir/src/RLogger.cxx.o core/foundation/CMakeFiles/Foundation_Stage1.dir/src/StringUtils.cxx.o core/foundation/CMakeFiles/Foundation_Stage1.dir/src/TClassEdit.cxx.o core/foundation/CMakeFiles/Foundation_Stage1.dir/src/TError.cxx.o core/foundation/CMakeFiles/Foundation_Stage1.dir/v7/src/RError.cxx.o core/rootcling_stage1/CMakeFiles/rootcling_stage1.dir/src/rootcling_stage1.cxx.o -o core/rootcling_stage1/src/rootcling_stage1 -L/usr/local/llvm18/lib -Wl,-rpath,/usr/local/llvm18/lib:/usr/local/lib  /usr/local/lib/libclingInterpreter.a  /usr/local/lib/libclingMetaProcessor.a  /usr/local/lib/libclingUtils.a  /usr/local/lib/libclingMetaProcessor.a  /usr/local/llvm18/lib/libclangLex.a  /usr/local/llvm18/lib/libclangAST.a  /usr/local/llvm18/lib/libclangBasic.a  /usr/local/lib/libclingInterpreter.a  /usr/local/lib/libclingUtils.a  /usr/local/llvm18/lib/libLLVMCore.a  /usr/local/llvm18/lib/libLLVMSupport.a  /usr/local/llvm18/lib/libLLVMBinaryFormat.a  /usr/local/llvm18/lib/libclangCodeGen.a  /usr/local/llvm18/lib/libclangDriver.a  /usr/local/llvm18/lib/libclangFrontend.a  /usr/local/llvm18/lib/libclangParse.a  /usr/local/llvm18/lib/libclangSema.a  /usr/local/llvm18/lib/libclangAnalysis.a  /usr/local/llvm18/lib/libclangEdit.a  /usr/local/llvm18/lib/libclangRewrite.a  /usr/local/llvm18/lib/libclangRewriteFrontend.a  /usr/local/llvm18/lib/libclangSerialization.a  -lprocstat  -lutil  /usr/local/llvm18/lib/libLLVMAnalysis.a  /usr/local/llvm18/lib/libLLVMCoroutines.a  /usr/local/llvm18/lib/libLLVMCoverage.a  /usr/local/llvm18/lib/libLLVMExecutionEngine.a  /usr/local/llvm18/lib/libLLVMipo.a  /usr/local/llvm18/lib/libLLVMJITLink.a  /usr/local/llvm18/lib/libLLVMLTO.a  /usr/local/llvm18/lib/libLLVMMC.a  /usr/local/llvm18/lib/libLLVMObject.a  /usr/local/llvm18/lib/libLLVMOption.a  /usr/local/llvm18/lib/libLLVMOrcJIT.a  /usr/local/llvm18/lib/libLLVMRuntimeDyld.a  /usr/local/llvm18/lib/libLLVMScalarOpts.a  /usr/local/llvm18/lib/libLLVMTarget.a  /usr/local/llvm18/lib/libLLVMTransformUtils.a  /usr/local/llvm18/lib/libLLVMNVPTXCodeGen.a  /usr/local/llvm18/lib/libLLVMNVPTXDesc.a  /usr/local/llvm18/lib/libLLVMNVPTXInfo.a  /usr/local/llvm18/lib/libLLVMX86CodeGen.a  /usr/local/llvm18/lib/libLLVMX86AsmParser.a  /usr/local/llvm18/lib/libLLVMX86Desc.a  /usr/local/llvm18/lib/libLLVMX86Disassembler.a  /usr/local/llvm18/lib/libLLVMX86Info.a  -ldl  -lpthread  /usr/local/llvm18/lib/libLLVMDemangle.a  /usr/local/llvm18/lib/libLLVMRemarks.a  /usr/local/llvm18/lib/libLLVMTargetParser.a  -lrt  -lexecinfo  -lm  /usr/lib/libz.so  /usr/local/llvm18/lib/libclangAPINotes.a  /usr/local/llvm18/lib/libclangSupport.a  /usr/local/llvm18/lib/libclangASTMatchers.a  /usr/local/llvm18/lib/libLLVMProfileData.a  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/usr/local/llvm18/lib/libLLVMTextAPI.a  /usr/local/llvm18/lib/libLLVMAnalysis.a  /usr/local/llvm18/lib/libLLVMBitReader.a  /usr/local/llvm18/lib/libLLVMBitWriter.a  /usr/local/llvm18/lib/libLLVMPasses.a  /usr/local/llvm18/lib/libLLVMOrcShared.a  /usr/local/llvm18/lib/libLLVMWindowsDriver.a  /usr/local/llvm18/lib/libLLVMAsmPrinter.a  /usr/local/llvm18/lib/libLLVMSelectionDAG.a  /usr/local/llvm18/lib/libLLVMCFGuard.a  /usr/local/llvm18/lib/libLLVMGlobalISel.a  /usr/local/llvm18/lib/libLLVMIRPrinter.a  /usr/local/llvm18/lib/libLLVMMCDisassembler.a  /usr/local/llvm18/lib/libLLVMBitstreamReader.a  /usr/local/llvm18/lib/libLLVMSymbolize.a  /usr/local/llvm18/lib/libLLVMDebugInfoDWARF.a  /usr/local/llvm18/lib/libLLVMFrontendOffloading.a  /usr/local/llvm18/lib/libLLVMAsmParser.a  /usr/local/llvm18/lib/libPolly.a  /usr/local/llvm18/lib/libLLVMHipStdPar.a  /usr/local/llvm18/lib/libLLVMDebugInfoPDB.a  /usr/local/llvm18/lib/libLLVMDebugInfoBTF.a  /usr/local/llvm18/lib/libPollyISL.a  /usr/local/llvm18/lib/libLLVMDebugInfoMSF.a  -lpthread  -lutil  -lprocstat  -lutil  /usr/local/llvm18/lib/libclangFrontend.a  /usr/local/llvm18/lib/libclangDriver.a  /usr/local/llvm18/lib/libclangParse.a  /usr/local/llvm18/lib/libclangRewrite.a  /usr/local/llvm18/lib/libclangSerialization.a  /usr/local/llvm18/lib/libclangSema.a  /usr/local/llvm18/lib/libclangAnalysis.a  /usr/local/llvm18/lib/libclangASTMatchers.a  /usr/local/llvm18/lib/libclangEdit.a  /usr/local/llvm18/lib/libclangAPINotes.a  /usr/local/llvm18/lib/libclangSupport.a  /usr/local/llvm18/lib/libLLVMExecutionEngine.a  /usr/local/llvm18/lib/libLLVMJITLink.a  /usr/local/llvm18/lib/libLLVMOrcTargetProcess.a  /usr/local/llvm18/lib/libLLVMOrcShared.a  /usr/local/llvm18/lib/libLLVMPasses.a  /usr/local/llvm18/lib/libLLVMCoroutines.a  /usr/local/llvm18/lib/libLLVMHipStdPar.a  /usr/local/llvm18/lib/libLLVMOption.a  /usr/local/llvm18/lib/libLLVMRuntimeDyld.a  /usr/local/llvm18/lib/libLLVMipo.a  /usr/local/llvm18/lib/libLLVMFrontendOpenMP.a  /usr/local/llvm18/lib/libLLVMFrontendOffloading.a  /usr/local/llvm18/lib/libLLVMLinker.a  /usr/local/llvm18/lib/libLLVMVectorize.a  /usr/local/llvm18/lib/libLLVMInstrumentation.a  /usr/local/llvm18/lib/libLLVMCFGuard.a  /usr/local/llvm18/lib/libLLVMSelectionDAG.a  /usr/local/llvm18/lib/libLLVMCodeGen.a  /usr/local/llvm18/lib/libLLVMScalarOpts.a  /usr/local/llvm18/lib/libLLVMAggressiveInstCombine.a  /usr/local/llvm18/lib/libLLVMInstCombine.a  /usr/local/llvm18/lib/libLLVMTarget.a  /usr/local/llvm18/lib/libLLVMBitWriter.a  /usr/local/llvm18/lib/libLLVMObjCARCOpts.a  /usr/local/llvm18/lib/libLLVMTransformUtils.a  /usr/local/llvm18/lib/libLLVMIRPrinter.a  /usr/local/llvm18/lib/libLLVMAnalysis.a  /usr/local/llvm18/lib/libLLVMProfileData.a  /usr/local/llvm18/lib/libLLVMSymbolize.a  /usr/local/llvm18/lib/libLLVMDebugInfoPDB.a  /usr/local/llvm18/lib/libLLVMDebugInfoMSF.a  /usr/local/llvm18/lib/libLLVMDebugInfoBTF.a  /usr/local/llvm18/lib/libLLVMDebugInfoDWARF.a  /usr/local/llvm18/lib/libLLVMObject.a  /usr/local/llvm18/lib/libLLVMIRReader.a  /usr/local/llvm18/lib/libLLVMBitReader.a  /usr/local/llvm18/lib/libLLVMAsmParser.a  /usr/local/llvm18/lib/libLLVMTextAPI.a  /usr/local/llvm18/lib/libLLVMMCParser.a  /usr/local/llvm18/lib/libLLVMCodeGenTypes.a  /usr/local/llvm18/lib/libLLVMMC.a  /usr/local/llvm18/lib/libLLVMDebugInfoCodeView.a  /usr/local/llvm18/lib/libclangAST.a  /usr/local/llvm18/lib/libclangLex.a  /usr/local/llvm18/lib/libclangBasic.a  /usr/local/llvm18/lib/libLLVM.so.18.1  /usr/local/llvm18/lib/libLLVMCore.a  /usr/local/llvm18/lib/libLLVMRemarks.a  /usr/local/llvm18/lib/libLLVMBitstreamReader.a  /usr/local/llvm18/lib/libLLVMBinaryFormat.a  /usr/local/llvm18/lib/libLLVMTargetParser.a  /usr/local/llvm18/lib/libLLVMSupport.a  /usr/local/llvm18/lib/libLLVMDemangle.a  -lrt  -lexecinfo  -lpthread  -lm  /usr/lib/libz.so  /usr/local/lib/libzstd.so.1.5.7  -pthread && :
ld: error: undefined symbol: clang::SourceManager::invalidateCache(clang::FileID)
>>> referenced by TransactionUnloader.cpp
>>>               TransactionUnloader.cpp.o:(cling::TransactionUnloader::RevertTransaction(cling::Transaction*)) in archive /usr/local/lib/libclingInterpreter.a
>>> referenced by DeclUnloader.cpp
>>>               DeclUnloader.cpp.o:(cling::DeclUnloader::~DeclUnloader()) in archive /usr/local/lib/libclingInterpreter.a

ld: error: undefined symbol: clang::CodeGenerator::forgetGlobal(llvm::GlobalValue*)
>>> referenced by TransactionUnloader.cpp
>>>               TransactionUnloader.cpp.o:(cling::TransactionUnloader::RevertTransaction(cling::Transaction*)) in archive /usr/local/lib/libclingInterpreter.a
>>> referenced by TransactionUnloader.cpp
>>>               TransactionUnloader.cpp.o:(cling::TransactionUnloader::RevertTransaction(cling::Transaction*)) in archive /usr/local/lib/libclingInterpreter.a
>>> referenced by TransactionUnloader.cpp
>>>               TransactionUnloader.cpp.o:(cling::TransactionUnloader::unloadModule(llvm::Module*)) in archive /usr/local/lib/libclingInterpreter.a
>>> referenced 2 more times

ld: error: undefined symbol: clang::Preprocessor::printMacro(clang::IdentifierInfo const*, clang::MacroDirective const*, llvm::raw_ostream&) const
>>> referenced by Transaction.cpp
>>>               Transaction.cpp.o:(cling::Transaction::MacroDirectiveInfo::dump(clang::Preprocessor const&) const) in archive /usr/local/lib/libclingInterpreter.a
>>> referenced by Transaction.cpp
>>>               Transaction.cpp.o:(cling::Transaction::MacroDirectiveInfo::print(llvm::raw_ostream&, clang::Preprocessor const&) const) in archive /usr/local/lib/libclingInterpreter.a
>>> referenced by Transaction.cpp
>>>               Transaction.cpp.o:(cling::Transaction::print(llvm::raw_ostream&, clang::PrintingPolicy const&, unsigned int, bool) const) in archive /usr/local/lib/libclingInterpreter.a

ld: error: undefined symbol: clang::CodeGenerator::print(llvm::raw_ostream&)
>>> referenced by ClangInternalState.cpp
>>>               ClangInternalState.cpp.o:(cling::ClangInternalState::store()) in archive /usr/local/lib/libclingInterpreter.a
>>> referenced by ClangInternalState.cpp
>>>               ClangInternalState.cpp.o:(cling::ClangInternalState::printLLVMModule(llvm::raw_ostream&, llvm::Module const&, clang::CodeGenerator&)) in archive /usr/local/lib/libclingInterpreter.a

ld: error: undefined symbol: clang::CodeGenerator::forgetDecl(llvm::StringRef)
>>> referenced by DeclUnloader.cpp
>>>               DeclUnloader.cpp.o:(cling::DeclUnloader::MaybeRemoveDeclFromModule(clang::GlobalDecl&) const) in archive /usr/local/lib/libclingInterpreter.a

ld: error: undefined symbol: clang::Preprocessor::printMacros(llvm::raw_ostream&) const
>>> referenced by ClangInternalState.cpp
>>>               ClangInternalState.cpp.o:(cling::ClangInternalState::printMacroDefinitions(llvm::raw_ostream&, clang::Preprocessor const&)) in archive /usr/local/lib/libclingInterpreter.a

ld: error: undefined symbol: clang::Preprocessor::removeMacro(clang::IdentifierInfo*, clang::MacroDirective*)
>>> referenced by DeclUnloader.cpp
>>>               DeclUnloader.cpp.o:(cling::DeclUnloader::VisitMacro(cling::Transaction::MacroDirectiveInfo)) in archive /usr/local/lib/libclingInterpreter.a

ld: error: undefined symbol: clang::Parser::Parser(clang::Preprocessor&, clang::Sema&, bool, bool)
>>> referenced by IncrementalParser.cpp
>>>               IncrementalParser.cpp.o:(cling::IncrementalParser::Initialize(llvm::SmallVectorImpl<llvm::PointerIntPair<cling::Transaction*, 2u, cling::IncrementalParser::EParseResult, llvm::PointerLikeTypeTraits<cling::Transaction*>, llvm::PointerIntPairInfo<cling::Transaction*, 2u, llvm::PointerLikeTypeTraits<cling::Transaction*>>>>&, bool)) in archive /usr/local/lib/libclingInterpreter.a
>>> referenced by Interpreter.cpp
>>>               Interpreter.cpp.o:(cling::Interpreter::Interpreter(int, char const* const*, char const*, std::__1::vector<std::__1::shared_ptr<clang::ModuleFileExtension>, std::__1::allocator<std::__1::shared_ptr<clang::ModuleFileExtension>>> const&, void*, bool, cling::Interpreter const*)) in archive /usr/local/lib/libclingInterpreter.a

ld: error: undefined symbol: clang::CodeGenerator::StartModule(llvm::StringRef, llvm::LLVMContext&, clang::CodeGenOptions const&)
>>> referenced by IncrementalParser.cpp
>>>               IncrementalParser.cpp.o:(cling::IncrementalParser::StartModule()) in archive /usr/local/lib/libclingInterpreter.a
>>> referenced by IncrementalParser.cpp
>>>               IncrementalParser.cpp.o:(cling::IncrementalParser::commitTransaction(llvm::PointerIntPair<cling::Transaction*, 2u, cling::IncrementalParser::EParseResult, llvm::PointerLikeTypeTraits<cling::Transaction*>, llvm::PointerIntPairInfo<cling::Transaction*, 2u, llvm::PointerLikeTypeTraits<cling::Transaction*>>>&, bool)) in archive /usr/local/lib/libclingInterpreter.a
>>> referenced by IncrementalParser.cpp
>>>               IncrementalParser.cpp.o:(cling::IncrementalParser::codeGenTransaction(cling::Transaction*)) in archive /usr/local/lib/libclingInterpreter.a
clang++: error: linker command failed with exit code 1 (use -v to see invocation)
ninja: build stopped: subcommand failed.
*** Error code 1

My suspicion is that both the cling-patched as well as unpatched clang and/or llvm are being invoked, and things then screw up, but I am currently at a loss as to how I can properly configure root with builtin_cling=OFF, builting_clang=OFF and builtin_llvm=OFF.

The need for find_package(zstd) also suggests to me that some CMake targets are either not exported correctly, or the wrong CMake configs are being used.

Any help would be much appreciated!

[ferdymercury]

@guitargeek or @hahnjo have looked into the builtin llvm off option recently and might have a hint.