breaking change with rsp file when migrating from boost 1.78 to boost 1.83 under windows/mingw64

[rlepere]

Hello,

I am migrating my application from boost-1.78 (b2 4.7-git) to boost-1.83 (b2 4.10-git). I am using boost build and bjam as a build tool for my application.

I am using g++ compiler (11.3) under windows environment, everything was working correctly under the old version of boost-build but I am having a problem with the new one.

It is related to the linker pass where a response file .rsp file is used because the line can be very long.

In previous version, the linker line generated was something like :
g++ -L"c:\external\boost_1_78_0" @toto.rsp

now the line is
g++ @toto.rsp

and the first line of the response file is -L"c:\external\boost_1_78_0"
This leads to problems because g++ does not find libs correctly. The first line of the response file should be either
-L"c:\external\boost_1_78_0"
or
-L"c:/external/boost_1_78_0"
so that g++ can find correctly the libs.

What could I do to fix the problem ? Is this a bug ?

Best regards,

Renaud Lepère

[github-actions]

Thank you for your contributions. Main development of B2 has moved to https://github.com/bfgroup/b2 Please consider following up at https://github.com/bfgroup/b2/issues