pthread binary compatibility with FreeBSD 4

Julian Elischer julian at
Thu Dec 22 16:23:08 PST 2005

Steven Doerfler wrote:

>I need to build a binary under FreeBSD 5.4 that will run under FreeBSD 4.11
>without recompiling.  Dynamically linked binaries are out since FreeBSD
>4.11 lacks the appropriate libraries, but a statically linked binary from
>FreeBSD 5.4 seems to work fine under 4.11, as long as it doesn't link with
>a threading library.  Linking with -lpthread or -pthread produces an error
>immediately at startup:

make a 4.11 based jail or chroot and compile there using 4.11 tools

>Fatal error 'Can't allocate initial kse.' at line 267 in file 
>/usr/src/lib/libpthread/thread/thr_init.c (errno = 45)
>Segmentation fault (core dumped)
>I'm guessing this is because FreeBSD 4.11 lacks KSE's, and support for such
>older kernels has been removed from pthread?
>Is there any workaround for this?  Maybe a threading library that doesn't
>depend on KSE's and works under 4.11 too?  (I tried libc_r and libthr
>briefly but without success.)  Or a way to build a version of pthread that
>doesn't use KSE's?  Or is there a way to build with FreeBSD 4.11 libraries
>under FreeBSD 5.4?
>Thanks for any suggestions.
>Steven Doerfler
>freebsd-threads at mailing list
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