Arch Linux User Repository

The built cling binary doesn't seem to work for me:

ERROR in cling::CIFactory::createCI():
  resource directory /home/tyilo/.cache/paru/clone/cling/src/build/lib/clang/13.0.0 not found!

****************** CLING ******************
* Type C++ code and press enter to run it *
*             Type .q to exit             *
*******************************************
[cling]$ int a = 3;
[cling]$ a + 3
In file included from input_line_5:1:
In file included from /opt/cling/include/cling/Interpreter/RuntimePrintValue.h:19:
In file included from /usr/lib/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/memory:80:
In file included from /usr/lib/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/shared_ptr.h:52:
In file included from /usr/lib/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/iosfwd:42:
In file included from /usr/lib/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/bits/postypes.h:40:
In file included from /usr/lib/gcc/x86_64-pc-linux-gnu/14.1.1/../../../../include/c++/14.1.1/cwchar:44:
/usr/include/wchar.h:35:10: fatal error: 'stddef.h' file not found
#include <stddef.h>
         ^~~~~~~~~~
 #0 0x000062409aeab4cb (/usr/bin/cling+0x8d34cb)
 #1 0x000062409aea8ebb (/usr/bin/cling+0x8d0ebb)
 #2 0x00000cde7e165ae0 (/usr/lib/libc.so.6+0x3cae0)
 #3 0x000062409ce0959f clang::DeclContext::removeDecl(clang::Decl*) (/usr/bin/cling+0x283159f)
 #4 0x000062409ad286fc cling::DeclUnloader::VisitNamedDecl(clang::NamedDecl*) (/usr/bin/cling+0x7506fc)
 #5 0x000062409ad2bb1c cling::DeclUnloader::VisitNamespaceDecl(clang::NamespaceDecl*) (/usr/bin/cling+0x753b1c)
 #6 0x000062409ad2b74b cling::DeclUnloader::VisitDeclContext(clang::DeclContext*) (/usr/bin/cling+0x75374b)
 #7 0x000062409ad2b889 cling::DeclUnloader::VisitLinkageSpecDecl(clang::LinkageSpecDecl*) (/usr/bin/cling+0x753889)
 #8 0x000062409adbc8ae cling::TransactionUnloader::unloadDeclarations(cling::Transaction*, cling::DeclUnloader&) (/usr/bin/cling+0x7e48ae)
 #9 0x000062409adbcd2d cling::TransactionUnloader::RevertTransaction(cling::Transaction*) (/usr/bin/cling+0x7e4d2d)
#10 0x000062409ad90f69 cling::Interpreter::unload(cling::Transaction&) (/usr/bin/cling+0x7b8f69)
#11 0x000062409ad868ca 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) (/usr/bin/cling+0x7ae8ca)
#12 0x000062409ad89df3 cling::IncrementalParser::Compile(llvm::StringRef, cling::CompilationOptions const&) (/usr/bin/cling+0x7b1df3)
#13 0x000062409ad8d952 cling::Interpreter::declare(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const&, cling::Transaction**) (/usr/bin/cling+0x7b5952)
#14 0x000062409adcf5da cling::valuePrinterInternal::printValueInternal[abi:cxx11](cling::Value const&) (/usr/bin/cling+0x7f75da)
#15 0x000062409adc698d cling::Value::print(llvm::raw_ostream&, bool) const (/usr/bin/cling+0x7ee98d)
#16 0x00000cde7e08704a 
#17 0x000062409ad71a07 cling::IncrementalExecutor::executeWrapper(llvm::StringRef, cling::Value*) const (/usr/bin/cling+0x799a07)
#18 0x000062409ad8eeef cling::Interpreter::RunFunction(clang::FunctionDecl const*, cling::Value*) (/usr/bin/cling+0x7b6eef)
#19 0x000062409ad8f6d6 cling::Interpreter::EvaluateInternal(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const&, cling::CompilationOptions, cling::Value*, cling::Transaction**, unsigned long) (/usr/bin/cling+0x7b76d6)
#20 0x000062409ad8fa4e cling::Interpreter::process(std::__cxx11::basic_string<char, std::char_traits<char>, std::allocator<char>> const&, cling::Value*, cling::Transaction**, bool) (/usr/bin/cling+0x7b7a4e)
#21 0x000062409ade23a1 cling::MetaProcessor::process(llvm::StringRef, cling::Interpreter::CompilationResult&, cling::Value*, bool) (/usr/bin/cling+0x80a3a1)
#22 0x000062409aed1992 cling::UserInterface::runInteractively(bool) (/usr/bin/cling+0x8f9992)
#23 0x000062409abf67c9 main (/usr/bin/cling+0x61e7c9)
#24 0x00000cde7e14ec88 (/usr/lib/libc.so.6+0x25c88)
#25 0x00000cde7e14ed4c __libc_start_main (/usr/lib/libc.so.6+0x25d4c)
#26 0x000062409ac8ad55 _start (/usr/bin/cling+0x6b2d55)
PLEASE submit a bug report to https://bugs.llvm.org/ and include the crash backtrace.
Stack dump:
0.  Program arguments: /usr/bin/cling
fish: Job 1, '/usr/bin/cling' terminated by signal SIGSEGV (Address boundary error)

Nice, thanks for the trick.

@carlosal1015: Sorry for the late reply! I prefer to leave the default configuration as it is. If you want to allow redefinition of variables, functions etc., you can enter the following statement in the interactive shell: cling::runtime::gClingOpts->AllowRedefinition = 1;

@kaelingre: Many thanks for your helpful preparatory work! I updated the PKGBUILD for v1.0. In the course of this, I also added !debug to the options.

It would be useful to disable the debug option by default (i.e. add !debug to the options). The debug package that is produced is huge, 6.4GiB+.

I created a PKGBUILD for v1.0. Note that I hard-coded a specific llvm version (cling-llvm13-20240318-01) to build against:

pkgname=cling
pkgver=1.0
pkgrel=1
pkgdesc="Interactive C++ interpreter, built on the top of LLVM and Clang libraries"
arch=("i686" "x86_64")
url="https://root.cern.ch/cling"
license=("custom:Cling Release License")
provides=("cling")
conflicts=("cling")
depends=("libxml2")
makedepends=("git" "cmake" "ninja" "python")
optdepends=(
    "perl: support for scan-build, ccc-analyzer and c++-analyzer"
    "python: support for scan-view and Jupyter"
    "python-pygments: support for opt-viewer"
    "python-yaml: support for opt-viewer"
)
source=(
    "cling-llvm-$pkgver.tar.gz::https://github.com/root-project/llvm-project/archive/refs/tags/cling-llvm13-20240318-01.tar.gz"
    "$pkgname-$pkgver.tar.gz::https://github.com/root-project/cling/archive/refs/tags/v$pkgver.tar.gz"
)
sha256sums=(
    "SKIP"
    "SKIP"
)

build() {
    mkdir -p "$srcdir/build"
    cd "$srcdir/build"
    cmake \
        -G Ninja \
        -DCMAKE_BUILD_TYPE=Release \
        -DCMAKE_INSTALL_PREFIX="/opt/cling" \
        -DLLVM_TARGETS_TO_BUILD="host;NVPTX" \
        -DLLVM_BUILD_LLVM_DYLIB=OFF \
        -DLLVM_ENABLE_RTTI=ON \
        -DLLVM_ENABLE_FFI=ON \
        -DLLVM_BUILD_DOCS=OFF \
        -DLLVM_BUILD_TOOLS=OFF \
        -DLLVM_ENABLE_SPHINX=OFF \
        -DLLVM_ENABLE_DOXYGEN=OFF \
        -DLLVM_EXTERNAL_PROJECTS=cling \
        -DLLVM_EXTERNAL_CLING_SOURCE_DIR="$srcdir/cling-$pkgver/" \
        -DLLVM_ENABLE_PROJECTS="clang" \
        "$srcdir/llvm-project-cling-llvm13-20240318-01/llvm"

    ninja
}

package() {
    cd "$srcdir/build"

    DESTDIR="$pkgdir" ninja install

    install -d "$pkgdir/usr/bin"
    ln -s "/opt/cling/bin/cling" "$pkgdir/usr/bin/cling"

    install -Dm644 "$srcdir/$pkgname-$pkgver/LICENSE.TXT" \
        "$pkgdir/usr/share/licenses/$pkgname/LICENSE"

    # include CMake target import file so that other packages are able to use
    # `find_package(Cling REQUIRED)`
    install -Dm644 "$srcdir/build/tools/cling/lib/cmake/cling/ClingTargets.cmake" \
        "$pkgdir/opt/cling/lib/cmake/cling"

    # adjust cling target locations
    sed -Ei 's#(IMPORTED_LOCATION_RELEASE) ".*/([^/]*)"#\1 "/opt/cling/lib/\2"#g' \
        "$pkgdir/opt/cling/lib/cmake/cling/ClingTargets.cmake"

    # omit man page for clang's scan-build
    rm -f "$pkgdir/opt/cling/share/man/man1/scan-build.1"

    # remove empty directories
    rmdir -p --ignore-fail-on-non-empty "$pkgdir/opt/cling/share/man/man1"
    rmdir -p --ignore-fail-on-non-empty "$pkgdir/opt/cling/include/cling/cint"
}

There are no tags v1.0 for llvm and clang. Compilation will give errors if bump version to 1.0.

meet a mistake

克隆到纯仓库 '/home/zjh/.cache/yay/cling/cling-llvm'...
remote: Enumerating objects: 2182000, done.
remote: Counting objects: 100% (2182000/2182000), done.
remote: Compressing objects: 100% (437621/437621), done.
错误：RPC 失败。curl 18 transfer closed with outstanding read data remaining
fetch-pack: unexpected disconnect while reading sideband packet
致命错误：过早的文件结束符（EOF）
致命错误：fetch-pack：无效的 index-pack 输出
==> 错误： 下载 cling-llvm git 仓库失败
    正在放弃...
 -> 下载源文件时出错: /home/zjh/.cache/yay/cling 
     context: exit status 1 


:: (1/1) 正在解析 SRCINFO: cling
==> 正在创建软件包：cling 0.9-5 (2023年10月12日 星期四 17时44分26秒)
==> 正在检查运行时依赖关系...
==> 正在检查编译时依赖关系
==> 获取源代码...
  -> 正在克隆 cling-llvm git 仓库...
克隆到纯仓库 '/home/zjh/.cache/yay/cling/cling-llvm'...
remote: Enumerating objects: 2182000, done.
remote: Counting objects: 100% (2182000/2182000), done.
remote: Compressing objects: 100% (437621/437621), done.
remote: Total 2182000 (delta 1777937), reused 2137347 (delta 1735682)
接收对象中: 100% (2182000/2182000), 814.02 MiB | 772.00 KiB/s, 完成.
处理 delta 中: 100% (1777937/1777937), 完成.
  -> 正在克隆 cling-clang git 仓库...
克隆到纯仓库 '/home/zjh/.cache/yay/cling/cling-clang'...
致命错误：无法访问 'http://root.cern/git/clang.git/'：Empty reply from server
==> 错误： 下载 cling-clang git 仓库失败
    正在放弃...
 -> 生成时出错: cling-exit status 1
 -> 无法安装以下软件包, 需要手动介入处理:
cling - exit status 1

Hi @archibald869, could you please add this patch enable-redefinition-allowed.patch, this feature comes from cling-0.7.0, to disable this behaviour. Many thanks, I will really appreciate it, especially for the xeus-cling package.

This patch works from my side.

Thanks for your hints! I updated the PKGBUILD accordingly.