On Mon, 17 Mar 2025 06:41:31 GMT, David Holmes <dhol...@openjdk.org> wrote:
>> @magicus why can't we just use `-pthread` everywhere? My recollection is >> that `-pthread` both sets compiler directives needed for pthread programming >> and links to libpthread, so it seems to be what we should be using. ?? > >> Another follow-up is if it would hurt to include $LIBPTHREAD for _all_ >> Hotspot tests, to avoid the huge list. @dholmes-ora Do you have anything >> coming to mind directly that would make that infeasible, or is it just a >> matter of testing to add it and see if any tests fail? > > Sorry I was out of contact for a while. I can't imagine why any test would > fail if linked with libpthread, given the VM is linking to it anyway. > >> We can then check if we can turn -lpthread into -pthread on Linux as a >> follow up. > > I have a vague recollection that at one time `-pthread` set some > _POSIX_SOURCE define (or something like that) which conflicted with our use > of some gcc specific things. But that was long ago so I would try it and see. > Of couise it then becomes hard to classify what kind of flag this is because > it isn't strictly a library flag. @dholmes-ora > I have a vague recollection that at one time -pthread set some _POSIX_SOURCE > define (or something like that) which conflicted with our use of some gcc > specific things. But that was long ago so I would try it and see. Of couise > it then becomes hard to classify what kind of flag this is because it isn't > strictly a library flag. Is there any gain then in changing away from `-lpthread`? That is clearly defined, link with libpthread, with no side effects. "If it ain't broke..." ------------- PR Comment: https://git.openjdk.org/jdk/pull/23930#issuecomment-2740323348
