cling: tidy/simplify + add experimental libc++ support (#247253)
This commit is contained in:
parent
0e860bc023
commit
bbfcab42fd
@ -1,20 +1,39 @@
|
|||||||
{ lib
|
{ cmake
|
||||||
, stdenv
|
|
||||||
, python3
|
|
||||||
, libffi
|
|
||||||
, git
|
|
||||||
, cmake
|
|
||||||
, zlib
|
|
||||||
, fetchgit
|
|
||||||
, fetchFromGitHub
|
, fetchFromGitHub
|
||||||
, makeWrapper
|
, fetchgit
|
||||||
, runCommand
|
, git
|
||||||
|
, lib
|
||||||
|
, libffi
|
||||||
, llvmPackages_9
|
, llvmPackages_9
|
||||||
, glibc
|
, makeWrapper
|
||||||
, ncurses
|
, ncurses
|
||||||
|
, python3
|
||||||
|
, runCommand
|
||||||
|
, zlib
|
||||||
|
|
||||||
|
# *NOT* from LLVM 9!
|
||||||
|
# The compiler used to compile Cling may affect the runtime include and lib
|
||||||
|
# directories it expects to be run with. Cling builds against (a fork of) Clang,
|
||||||
|
# so we prefer to use Clang as the compiler as well for consistency.
|
||||||
|
# It would be cleanest to use LLVM 9's clang, but it errors. So, we use a later
|
||||||
|
# version of Clang to compile, but we check out the Cling fork of Clang 9 to
|
||||||
|
# build Cling against.
|
||||||
|
, clangStdenv
|
||||||
|
|
||||||
|
# For runtime C++ standard library
|
||||||
|
, gcc-unwrapped
|
||||||
|
|
||||||
|
# Build with debug symbols
|
||||||
|
, debug ? false
|
||||||
|
|
||||||
|
# Build with libc++ (LLVM) rather than stdlibc++ (GCC).
|
||||||
|
# This is experimental and not all features work.
|
||||||
|
, useLLVMLibcxx ? false
|
||||||
}:
|
}:
|
||||||
|
|
||||||
let
|
let
|
||||||
|
stdenv = clangStdenv;
|
||||||
|
|
||||||
# The LLVM 9 headers have a couple bugs we need to patch
|
# The LLVM 9 headers have a couple bugs we need to patch
|
||||||
fixedLlvmDev = runCommand "llvm-dev-${llvmPackages_9.llvm.version}" { buildInputs = [git]; } ''
|
fixedLlvmDev = runCommand "llvm-dev-${llvmPackages_9.llvm.version}" { buildInputs = [git]; } ''
|
||||||
mkdir $out
|
mkdir $out
|
||||||
@ -58,7 +77,7 @@ let
|
|||||||
];
|
];
|
||||||
|
|
||||||
nativeBuildInputs = [ python3 git cmake ];
|
nativeBuildInputs = [ python3 git cmake ];
|
||||||
buildInputs = [ libffi zlib ncurses ];
|
buildInputs = [ libffi ncurses zlib ];
|
||||||
|
|
||||||
strictDeps = true;
|
strictDeps = true;
|
||||||
|
|
||||||
@ -69,6 +88,7 @@ let
|
|||||||
"-DLLVM_MAIN_INCLUDE_DIR=${fixedLlvmDev}/include"
|
"-DLLVM_MAIN_INCLUDE_DIR=${fixedLlvmDev}/include"
|
||||||
"-DLLVM_TABLEGEN_EXE=${llvmPackages_9.llvm.out}/bin/llvm-tblgen"
|
"-DLLVM_TABLEGEN_EXE=${llvmPackages_9.llvm.out}/bin/llvm-tblgen"
|
||||||
"-DLLVM_TOOLS_BINARY_DIR=${llvmPackages_9.llvm.out}/bin"
|
"-DLLVM_TOOLS_BINARY_DIR=${llvmPackages_9.llvm.out}/bin"
|
||||||
|
"-DLLVM_BUILD_TOOLS=Off"
|
||||||
"-DLLVM_TOOL_CLING_BUILD=ON"
|
"-DLLVM_TOOL_CLING_BUILD=ON"
|
||||||
|
|
||||||
"-DLLVM_TARGETS_TO_BUILD=host;NVPTX"
|
"-DLLVM_TARGETS_TO_BUILD=host;NVPTX"
|
||||||
@ -78,14 +98,22 @@ let
|
|||||||
# see cling/tools/CMakeLists.txt
|
# see cling/tools/CMakeLists.txt
|
||||||
"-DCLING_INCLUDE_TESTS=ON"
|
"-DCLING_INCLUDE_TESTS=ON"
|
||||||
"-DCLANG-TOOLS=OFF"
|
"-DCLANG-TOOLS=OFF"
|
||||||
# "--trace-expand"
|
] ++ lib.optionals debug [
|
||||||
|
"-DCMAKE_BUILD_TYPE=Debug"
|
||||||
|
] ++ lib.optionals useLLVMLibcxx [
|
||||||
|
"-DLLVM_ENABLE_LIBCXX=ON"
|
||||||
|
"-DLLVM_ENABLE_LIBCXXABI=ON"
|
||||||
];
|
];
|
||||||
|
|
||||||
|
CPPFLAGS = if useLLVMLibcxx then [ "-stdlib=libc++" ] else [];
|
||||||
|
|
||||||
postInstall = lib.optionalString (!stdenv.isDarwin) ''
|
postInstall = lib.optionalString (!stdenv.isDarwin) ''
|
||||||
mkdir -p $out/share/Jupyter
|
mkdir -p $out/share/Jupyter
|
||||||
cp -r /build/clang/tools/cling/tools/Jupyter/kernel $out/share/Jupyter
|
cp -r /build/clang/tools/cling/tools/Jupyter/kernel $out/share/Jupyter
|
||||||
'';
|
'';
|
||||||
|
|
||||||
|
dontStrip = debug;
|
||||||
|
|
||||||
meta = with lib; {
|
meta = with lib; {
|
||||||
description = "The Interactive C++ Interpreter";
|
description = "The Interactive C++ Interpreter";
|
||||||
homepage = "https://root.cern/cling/";
|
homepage = "https://root.cern/cling/";
|
||||||
@ -95,44 +123,49 @@ let
|
|||||||
};
|
};
|
||||||
};
|
};
|
||||||
|
|
||||||
|
# Runtime flags for the C++ standard library
|
||||||
|
cxxFlags = if useLLVMLibcxx then [
|
||||||
|
"-I" "${lib.getDev llvmPackages_9.libcxx}/include/c++/v1"
|
||||||
|
"-L" "${llvmPackages_9.libcxx}/lib"
|
||||||
|
"-l" "${llvmPackages_9.libcxx}/lib/libc++.so"
|
||||||
|
] else [
|
||||||
|
"-I" "${gcc-unwrapped}/include/c++/${gcc-unwrapped.version}"
|
||||||
|
"-I" "${gcc-unwrapped}/include/c++/${gcc-unwrapped.version}/x86_64-unknown-linux-gnu"
|
||||||
|
];
|
||||||
|
|
||||||
# The flags passed to the wrapped cling should
|
# The flags passed to the wrapped cling should
|
||||||
# a) prevent it from searching for system include files and libs, and
|
# a) prevent it from searching for system include files and libs, and
|
||||||
# b) provide it with the include files and libs it needs (C and C++ standard library)
|
# b) provide it with the include files and libs it needs (C and C++ standard library plus
|
||||||
|
# its own stuff)
|
||||||
|
|
||||||
# These are also exposed as cling.flags/cling.compilerIncludeFlags because it's handy to be
|
# These are also exposed as cling.flags because it's handy to be able to pass them to tools
|
||||||
# able to pass them to tools that wrap Cling, particularly Jupyter kernels such as xeus-cling
|
# that wrap Cling, particularly Jupyter kernels such as xeus-cling and the built-in
|
||||||
# and the built-in jupyter-cling-kernel. Both of these use Cling as a library by linking against
|
# jupyter-cling-kernel, which use Cling as a library.
|
||||||
# libclingJupyter.so, so the makeWrapper approach to wrapping the binary doesn't work.
|
|
||||||
# Thus, if you're packaging a Jupyter kernel, you either need to pass these flags as extra
|
# Thus, if you're packaging a Jupyter kernel, you either need to pass these flags as extra
|
||||||
# args to xcpp (for xeus-cling) or put them in the environment variable CLING_OPTS
|
# args to xcpp (for xeus-cling) or put them in the environment variable CLING_OPTS
|
||||||
# (for jupyter-cling-kernel)
|
# (for jupyter-cling-kernel).
|
||||||
flags = [
|
flags = [
|
||||||
"-nostdinc"
|
"-nostdinc"
|
||||||
"-nostdinc++"
|
"-nostdinc++"
|
||||||
"-isystem" "${lib.getDev stdenv.cc.libc}/include"
|
|
||||||
"-I" "${lib.getDev unwrapped}/include"
|
|
||||||
"-I" "${lib.getLib unwrapped}/lib/clang/9.0.1/include"
|
|
||||||
];
|
|
||||||
|
|
||||||
# Autodetect the include paths for the compiler used to build Cling, in the same way Cling does at
|
"-isystem" "${lib.getLib unwrapped}/lib/clang/9.0.1/include"
|
||||||
# https://github.com/root-project/cling/blob/v0.7/lib/Interpreter/CIFactory.cpp#L107:L111
|
]
|
||||||
# Note: it would be nice to just put the compiler in Cling's PATH and let it do this by itself, but
|
++ cxxFlags
|
||||||
# unfortunately passing -nostdinc/-nostdinc++ disables Cling's autodetection logic.
|
++ [
|
||||||
compilerIncludeFlags = runCommand "compiler-include-flags.txt" {} ''
|
# System libc
|
||||||
export LC_ALL=C
|
"-isystem" "${lib.getDev stdenv.cc.libc}/include"
|
||||||
${stdenv.cc}/bin/c++ -xc++ -E -v /dev/null 2>&1 | sed -n -e '/^.include/,''${' -e '/^ \/.*++/p' -e '}' > tmp
|
|
||||||
sed -e 's/^/-isystem /' -i tmp
|
# cling includes
|
||||||
tr '\n' ' ' < tmp > $out
|
"-isystem" "${lib.getDev unwrapped}/include"
|
||||||
'';
|
];
|
||||||
|
|
||||||
in
|
in
|
||||||
|
|
||||||
runCommand "cling-${unwrapped.version}" {
|
runCommand "cling-${unwrapped.version}" {
|
||||||
nativeBuildInputs = [ makeWrapper ];
|
nativeBuildInputs = [ makeWrapper ];
|
||||||
inherit unwrapped flags compilerIncludeFlags;
|
inherit unwrapped flags;
|
||||||
inherit (unwrapped) meta;
|
inherit (unwrapped) meta;
|
||||||
} ''
|
} ''
|
||||||
makeWrapper $unwrapped/bin/cling $out/bin/cling \
|
makeWrapper $unwrapped/bin/cling $out/bin/cling \
|
||||||
--add-flags "$(cat "$compilerIncludeFlags")" \
|
|
||||||
--add-flags "$flags"
|
--add-flags "$flags"
|
||||||
''
|
''
|
||||||
|
Loading…
Reference in New Issue
Block a user