In article <[EMAIL PROTECTED]>, Zack Weinberg <[EMAIL PROTECTED]> wrote: > >Joel Klecker wrote: >>The main problem is that 2.0 kernels do not support sigaltstack(), >>this causes such things as m4 to fail when run on a Linux 2.0 system >>if it was compiled on a glibc 2.1 system using 2.2 kernel headers. > >*sigh* This is a bug in any program that assumes sigaltstack() works >just because it exists in the library. m4, etc. should be fixed to >test it at runtime and fall back to some other behavior if it doesn't >work. > >This is in the libc FAQ as of 2.1.1-5: >#3.21. Autoconf's AC_CHECK_FUNC macro reports that a function exists, but ># when I try to use it, it always returns -1 and sets errno to ENOSYS.
That only says that ./configure should try to actually use it, not that the resulting binary should do that at runtime. Mike. -- Indifference will certainly be the downfall of mankind, but who cares?
