Comment by Vladislav Dembskiy (JIRA)

No. I have downgraded gcc to 6.3.0 and have got the same error.

Comment by Vladislav Dembskiy (JIRA)

I have just did

./swift/utils/update-checkout --clone
and tried to repeat swift build:
utils/build-script --assertions --no-swift-stdlib-assertions --llbuild --swiftpm --xctest --build-subdir=buildbot_linux --lldb --release --test --validation-test --long-test --foundation --libdispatch --lit-args=v - --swift-enable-ast-verifier=0 --build-ninja --install-swift --install-lldb --install-llbuild --install-swiftpm --install-xctest --install-prefix=/usr '--swift-install-components=autolink-driver;compiler;clang-builtin-headers;stdlib;swift-remote-mirror;sdk-overlay;license;sourcekit-inproc' --build-swift-static-stdlib --build-swift-static-sdk-overlay --build-swift-stdlib-unittest-extra --test-installable-package --install-destdir=/mnt/swift/lfs --installable-package=/mnt/swift/lfs/swift-lfs.tar.gz --skip-test-lldb --install-foundation --install-libdispatch --reconfigure --extra-cmake-options=-DLLVM_TARGETS_TO_BUILD="host"
Unfortunately I have got the same error:
lldb: using gold linker

• mkdir -p /mnt/swift/swift-source/build/buildbot_linux/lldb-linux-x86_64
• pushd /mnt/swift/swift-source/build/buildbot_linux/lldb-linux-x86_64
  /mnt/swift/swift-source/build/buildbot_linux/lldb-linux-x86_64 /mnt/swift/swift-source/swift
• env /usr/bin/cmake -G Ninja -DCMAKE_C_COMPILER:PATH=/usr/bin/clang -DCMAKE_CXX_COMPILER:PATH=/usr/bin/clang++ -DLLVM_VERSION_MAJOR:STRING=4 -DLLVM_VERSION_MINOR:STRING=0 -DLLVM_VERSION_PATCH:STRING=0 -DCLANG_VERSION_MAJOR:STRING=4 -DCLANG_VERSION_MINOR:STRING=0 -DCLANG_VERSION_PATCH:STRING=0 -DCMAKE_MAKE_PROGRAM=/mnt/swift/swift-source/build/buildbot_linux/ninja-build/ninja -DCMAKE_EXE_LINKER_FLAGS:STRING=-fuse-ld=gold -DCMAKE_SHARED_LINKER_FLAGS:STRING=-fuse-ld=gold -DCMAKE_BUILD_TYPE:STRING=Release -DLLDB_SWIFTC:PATH=/mnt/swift/swift-source/build/buildbot_linux/swift-linux-x86_64/bin/swiftc -DCMAKE_INSTALL_PREFIX:PATH=/usr/ -DLLDB_PATH_TO_LLVM_SOURCE:PATH=/mnt/swift/swift-source/llvm -DLLDB_PATH_TO_CLANG_SOURCE:PATH=/mnt/swift/swift-source/llvm/tools/clang -DLLDB_PATH_TO_SWIFT_SOURCE:PATH=/mnt/swift/swift-source/swift -DLLDB_PATH_TO_LLVM_BUILD:PATH=/mnt/swift/swift-source/build/buildbot_linux/llvm-linux-x86_64 -DLLDB_PATH_TO_CLANG_BUILD:PATH=/mnt/swift/swift-source/build/buildbot_linux/llvm-linux-x86_64 -DLLDB_PATH_TO_SWIFT_BUILD:PATH=/mnt/swift/swift-source/build/buildbot_linux/swift-linux-x86_64 -DLLDB_PATH_TO_CMARK_BUILD:PATH=/mnt/swift/swift-source/build/buildbot_linux/cmark-linux-x86_64 -DLLDB_IS_BUILDBOT_BUILD=0 '-DLLDB_BUILD_DATE:STRING="2017-05-15"' -DLLDB_ALLOW_STATIC_BINDINGS=1 -DLLVM_TARGETS_TO_BUILD=host /mnt/swift/swift-source/lldb
  – Found LLVM_CONFIG as /mnt/swift/swift-source/build/buildbot_linux/llvm-linux-x86_64/bin/llvm-config
  – Building with -fPIC
  – Found PythonInterp: /usr/bin/python3.6
  – LLDB version: 4.0.0
  – Symbols (liblldb): exporting all symbols from the lldb namespace
  – Configuring done
  – Generating done
  – Build files have been written to: /mnt/swift/swift-source/build/buildbot_linux/lldb-linux-x86_64
• popd
  /mnt/swift/swift-source/swift
• /usr/bin/cmake --build /mnt/swift/swift-source/build/buildbot_linux/lldb-linux-x86_64 – -j4 all
  [5/160] Building CXX object source/Utility/CMakeFiles/lldbUtility.dir/TaskPool.cpp.o
  FAILED: source/Utility/CMakeFiles/lldbUtility.dir/TaskPool.cpp.o
  /usr/bin/clang++ -DGTEST_HAS_RTTI=0 -DHAVE_PROCESS_VM_READV -DHAVE_ROUND -DLIBXML2_DEFINED -DLLDB_USE_BUILTIN_DEMANGLER -D_DEBUG -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Isource/Utility -I/mnt/swift/swift-source/lldb/source/Utility -I/mnt/swift/swift-source/lldb/include -Iinclude -I/mnt/swift/swift-source/build/buildbot_linux/llvm-linux-x86_64/include -I/mnt/swift/swift-source/build/buildbot_linux/llvm-linux-x86_64/tools/clang/include -I/mnt/swift/swift-source/llvm/include -I/include -I/mnt/swift/swift-source/llvm/tools/clang/include -I/mnt/swift/swift-source/build/buildbot_linux/swift-linux-x86_64/include -I/mnt/swift/swift-source/swift/include -I/mnt/swift/swift-source/lldb/source -I/usr/include/python3.6m -I/mnt/swift/swift-source/lldb/tools/clang/include -I../clang/include -I/usr/include/libxml2 -I/mnt/swift/swift-source/lldb/source/. -I/mnt/swift/swift-source/lldb/source/Plugins/Process/Linux -I/mnt/swift/swift-source/lldb/source/Plugins/Process/POSIX -march=native -pipe -fPIC -fvisibility-inlines-hidden -Werror=date-time -std=c++11 -fcolor-diagnostics -ffunction-sections -fdata-sections -Wno-deprecated-declarations -Wno-unknown-pragmas -Wno-strict-aliasing -Wno-deprecated-register -Wno-vla-extension -O3 -UNDEBUG -fno-exceptions -fno-rtti -MD -MT source/Utility/CMakeFiles/lldbUtility.dir/TaskPool.cpp.o -MF source/Utility/CMakeFiles/lldbUtility.dir/TaskPool.cpp.o.d -o source/Utility/CMakeFiles/lldbUtility.dir/TaskPool.cpp.o -c /mnt/swift/swift-source/lldb/source/Utility/TaskPool.cpp
  In file included from /mnt/swift/swift-source/lldb/source/Utility/TaskPool.cpp:10:
  /mnt/swift/swift-source/lldb/include/lldb/Utility/TaskPool.h:122:12: error: no member named 'bind' in namespace 'std'
  std::bind(std::forward(f), std::forward(args)...));

1 error generated.
ninja: build stopped: subcommand failed.

Last time I build swift from source was on 7th of May and it was everything OK. What has been changed since?

Comment by Vladislav Dembskiy (JIRA)

After fresh checkout today I have got the same error:

[722/878] Building CXX object source/Utility/CMakeFiles/lldbUtility.dir/TaskPool.cpp.o
FAILED: source/Utility/CMakeFiles/lldbUtility.dir/TaskPool.cpp.o
/usr/bin/clang++ -DGTEST_HAS_RTTI=0 -DHAVE_PROCESS_VM_READV -DHAVE_ROUND -DLIBXML2_DEFINED -DLLDB_USE_BUILTIN_DEMANGLER -D_DEBUG -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Isource/Utility -I/mnt/swift/swift-source/lldb/source/Utility -I/mnt/swift/swift-source/lldb/include -Iinclude -I/mnt/swift/swift-source/build/buildbot_linux/llvm-linux-x86_64/include -I/mnt/swift/swift-source/build/buildbot_linux/llvm-linux-x86_64/tools/clang/include -I/mnt/swift/swift-source/llvm/include -I/include -I/mnt/swift/swift-source/llvm/tools/clang/include -I/mnt/swift/swift-source/build/buildbot_linux/swift-linux-x86_64/include -I/mnt/swift/swift-source/swift/include -I/mnt/swift/swift-source/lldb/source -I/usr/include/python3.6m -I/mnt/swift/swift-source/lldb/tools/clang/include -I../clang/include -I/usr/include/libxml2 -I/mnt/swift/swift-source/lldb/source/. -I/mnt/swift/swift-source/lldb/source/Plugins/Process/Linux -I/mnt/swift/swift-source/lldb/source/Plugins/Process/POSIX -march=native -pipe -fPIC -fvisibility-inlines-hidden -Werror=date-time -std=c++11 -fcolor-diagnostics -ffunction-sections -fdata-sections -Wno-deprecated-declarations -Wno-unknown-pragmas -Wno-strict-aliasing -Wno-deprecated-register -Wno-vla-extension -O3 -UNDEBUG -fno-exceptions -fno-rtti -MD -MT source/Utility/CMakeFiles/lldbUtility.dir/TaskPool.cpp.o -MF source/Utility/CMakeFiles/lldbUtility.dir/TaskPool.cpp.o.d -o source/Utility/CMakeFiles/lldbUtility.dir/TaskPool.cpp.o -c /mnt/swift/swift-source/lldb/source/Utility/TaskPool.cpp
In file included from /mnt/swift/swift-source/lldb/source/Utility/TaskPool.cpp:10:
/mnt/swift/swift-source/lldb/include/lldb/Utility/TaskPool.h:122:12: error: no member named 'bind' in namespace 'std'
std::bind(std::forward(f), std::forward(args)...));
~~~~~^
1 error generated.

Comment by Vladislav Dembskiy (JIRA)

After fresh Swift checkout the error still exists.

This is due to a missing include in TaskPool.h. To use std::bind, one needs to #include <functional>. This was already fixed in upstream lldb by this commit, so fixing this would mean either manually including functional or merging the linked commit into swift-lldb.

Comment by Vladislav Dembskiy (JIRA)

Yes, after manual including <functional> LLDB has been build successful. I hope that upstream comment will be merged into swift-lldb. I will keep the issue open till that.

Comment by Leif Hedstrom (JIRA)

Just adding on my +1, but yes, needs the proper include

diff --git a/include/lldb/Utility/TaskPool.h b/include/lldb/Utility/TaskPool.h
index db15b2081..3e6d5df8f 100644
--- a/include/lldb/Utility/TaskPool.h
+++ b/include/lldb/Utility/TaskPool.h
@@ -33,6 +33,7 @@
 #include <queue>
 #include <thread>
 #include <vector>
+#include <functional>

 // Global TaskPool class for running tasks in parallel on a set of worker thread
 // created the first

Comment by Vladislav Dembskiy (JIRA)

Up to date the patch has not been included into Swift LLDB repository.
The same error exists.

Comment by Vladislav Dembskiy (JIRA)

Interesting, what I do not have this error on Gentoo. It looks like that some LFS packages are too new for Swift. I will rename the issue from Linux to LFS.

Comment by Vladislav Dembskiy (JIRA)

I have renamed the error report because it does not reproducible on Gentoo,

Comment by Vladislav Dembskiy (JIRA)

Today I did fresh checkout and was not able to reproduce the problem. It looks like it has been resolved.