[Gazebo9] Fixed fails for OSX: Added using namespace boost::placeholders

[ahcorde]

Related with this issue #2808 (comment) and this error in the buildfarm https://build.osrfoundation.org/job/gazebo-ci-pr_any-homebrew-amd64/2057/console

Signed-off-by: Alejandro Hernández [email protected]

[j-rivero]

I still see some problems on the Mac build. Are they related to this PR?

/Users/jenkins/workspace/gazebo-ci-pr_any-homebrew-amd64/gazebo/test/plugins/ForceTorqueModelRemovalTestPlugin.cc:56:72: error: use of undeclared identifier '_1'
       boost::bind(&ForceTorqueModelRemovalTestPlugin::onUpdate, this, _1));

[ahcorde]

The compilation of the tests are failing. I'm trying to find a better solution

[scpeters]

This looks good. I think an alternative would be to use std::bind instead of boost::bind, but this is more concise

[scpeters]

ah, it looks like the Ubuntu builds are broken by the using namespace change.

I think we should either:

• #if BOOST_VERSION > X instead of #idfef __APPLE__ (like in CommonIface.hh)
• try using std::bind instead of boost::bind to see if that fixes it

[scpeters]

• try using std::bind instead of boost::bind to see if that fixes it

I'm going to take a quick look at this to see if it's an easy fix

[scpeters]

• try using std::bind instead of boost::bind to see if that fixes it

I'm going to take a quick look at this to see if it's an easy fix

I took this approach in 5d3d06e; it's more than 3 lines per file, but it reduces our boost usage slightly without an unwieldy diff

[scpeters]

• try using std::bind instead of boost::bind to see if that fixes it

I'm going to take a quick look at this to see if it's an easy fix

I took this approach in 5d3d06e; it's more than 3 lines per file, but it reduces our boost usage slightly without an unwieldy diff

it doesn't work for ubuntu though 🤭

[scpeters]

I switched to the other approach in fd718ac (#if BOOST_VERSION > X) and reduced the scope of the using namespace statement

[ahcorde]

thank you @scpeters for rework this PR 👍

[j-rivero]

Thanks @scpeters , @ahcorde . Looks good to me.