Am 13.10.2011 16:26, schrieb Andreas Färber: > Am 12.10.2011 18:21, schrieb Peter Maydell: >> Improve the configure test for presence of ucontext functions by >> making linker warnings fatal; this allows us to detect when we are >> linked with a glibc which implements makecontext() to always return >> ENOSYS. >> >> Signed-off-by: Peter Maydell<peter.mayd...@linaro.org> > > Tested-by: Andreas Färber <afaer...@suse.de> > >> --- >> Compiling on an Ubuntu Natty ARM host will hit this. > > Works on Ubuntu Maverick ARM host as well.
Erm... This works great, also for accept4(), on Linux, but it's not portable. Apple ld(1) doesn't seem to have --fatal-warnings. http://developer.apple.com/library/mac/#documentation/Darwin/Reference/ManPages/Xcode-3.2.5/man1/ld.1.html Sun/Oracle ld(1) does seem to have it as alias to -z fatal-warnings. http://download.oracle.com/docs/cd/E19963-01/html/821-1461/ld-1.html So, we'd have to check for valid linker options first? Andreas
