> On 25 Apr 2022, at 19:43, Steve Downey via SG15 <sg15@lists.isocpp.org> wrote:
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> Possibly for the system compiler, so that the BMI for <boost/smart_ptr.hpp> could be produced upon installation of the boost library.
With at least two of the current implementations, this is not a viable proposition - since the BMI is dependent on the compile options - therefore there is no single “BMI to install” - and the set of permutations would be too large to be practicable.
Iain
It's dependent on the compiler options, but a Linux distro controls that. If it's so sensitive to flags that any change makes it useless, it will be functionally useless in a medium to large build where the flags are always heterogenous across TUs.
For system libraries, the question is if the flags are compatible with the available library. It's a little more complicated question for header only, but it still comes down to not violating the ODR, as the header only may be used in other distro provided libraries.
Other considerations, like having to do this for every compiler and on every upgrade, probably make it infeasible, though.