error: use of undeclared identifier 'intrusive_ptr_add_ref'

[Martinfx]

Hi @johnhaddon,
Do you have any idea please how to fix this problem in 1.6.3.0 with clang ?

c++ -o src/Gaffer/Action.os -c "-O2 -pipe -fstack-protector-strong -isystem /usr/local/include -fno-strict-aliasing -isystem /usr/local/include " -isystem /home/maxfx/Documents/FreeBSD-Ports/gaffer/work/gaffer-1.6.3.0/build/gaffer-1.6.3.0-linux/include -isystem /home/maxfx/Documents/FreeBSD-Ports/gaffer/work/gaffer-1.6.3.0/build/gaffer-1.6.3.0-linux/include/Imath -isystem /home/maxfx/Documents/FreeBSD-Ports/gaffer/work/gaffer-1.6.3.0/build/gaffer-1.6.3.0-linux/include/GL -isystem /usr/local/include -std=c++20 -fvisibility=hidden -DNDEBUG -DBOOST_DISABLE_ASSERTS -O3 -DGaffer_EXPORTS -fPIC -DBOOST_FILESYSTEM_VERSION=3 -DBOOST_FILESYSTEM_NO_DEPRECATED -Iinclude -I/usr/local/include -I/usr/local/include/qt5 -I/usr/local/include/python3.11 -I/usr/local/include/Imath -I/usr/local/include/oneapi -I/usr/local/include/freetype2 -I/usr/local/include/utils -I/usr/local/include/third_party/atomic -I/usr/local/share/openshadinglanguage/shaders -Ibuild/gaffer-1.6.3.0-linux/include/python3.11 src/Gaffer/Action.cpp
In file included from src/Gaffer/Action.cpp:38:
In file included from include/Gaffer/Action.h:43:
In file included from /usr/local/include/IECore/RunTimeTyped.h:39:
In file included from /usr/local/include/IECore/RefCounted.h:41:
In file included from /usr/local/include/boost/intrusive_ptr.hpp:16:
/usr/local/include/boost/smart_ptr/intrusive_ptr.hpp:71:23: error: use of undeclared identifier 'intrusive_ptr_add_ref'
   71 |         if( px != 0 ) intrusive_ptr_add_ref( px );
      |                       ^
include/Gaffer/Private/SlotBase.h:86:24: note: in instantiation of member function 'boost::intrusive_ptr<Gaffer::Signals::Private::SlotBase>::intrusive_ptr' requested here
   86 |                 :       previous( &prev ), next( prev ), m_referenceCount( 0 ), blocked( false ), calling( false )
      |                                            ^

[johnhaddon]

The intrusive_ptr_add_ref that Clang claims doesn't exist is declared here : https://github.com/GafferHQ/gaffer/blob/main/include/Gaffer/Private/SlotBase.h#L152-L155. I don't know why Clang wouldn't be finding it though. For what it's worth, I do compile with Clang on Mac occasionally, and it works there.

[Martinfx]

The intrusive_ptr_add_ref that Clang claims doesn't exist is declared here : https://github.com/GafferHQ/gaffer/blob/main/include/Gaffer/Private/SlotBase.h#L152-L155. I don't know why Clang wouldn't be finding it though. For what it's worth, I do compile with Clang on Mac occasionally, and it works there.

I fixed the problem. The problem was with the C++20 flag