Date: Tue, 31 Mar 2009 17:39:02 +0800 From: "Shaowei Wang (wsw)" <wsw1wsw2@gmail.com> To: Srinivas Ganji <srinivasganji@gmail.com> Cc: freebsd-hackers@freebsd.org Subject: Re: Is it possible to use the libthr.a file on a Redhat Linux? Message-ID: <2e566b9e0903310239x15b53d1av2f45453cb35a8898@mail.gmail.com> In-Reply-To: <fc5047010903310140u2952cfdfo27c97e9cc59a6c7b@mail.gmail.com> References: <fc5047010903310140u2952cfdfo27c97e9cc59a6c7b@mail.gmail.com>
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On Tue, Mar 31, 2009 at 4:40 PM, Srinivas Ganji <srinivasganji@gmail.com>wrote: > Dear All, > > I have tried to use the libthr.a library for compiling an application which > is working fine on Redhat system with libpthread library. However, I end up > with the following errors. > > > > ../lib/linux/libthr.a(thr_sem.o): In function `_sem_init': > > thr_sem.c:(.text+0x100): undefined reference to `ksem_init' > > thr_sem.c:(.text+0x115): undefined reference to `ksem_destroy' > > ../lib/linux/libthr.a(thr_sem.o): In function `_sem_destroy': > > thr_sem.c:(.text+0x216): undefined reference to `ksem_destroy' > > ../lib/linux/libthr.a(thr_sem.o): In function `_sem_timedwait': > > thr_sem.c:(.text+0x2ad): undefined reference to `ksem_timedwait' > > ../lib/linux/libthr.a(thr_sem.o): In function `_sem_wait': > > .... > > .... > > .... > > > > collect2: ld returned 1 exit status > > make: *** [target] Error 1 > > > > So, I have also mentioned the libc.so.7(This is also a FreeBSD libc > > library) library in our application to remove the above undefined > references. So, at that time I got the following errors. > > > > /usr/bin/ld: errno@@FBSD_1.0: TLS definition in /lib/libc.so.6 section > .tbss > mismatches non-TLS definition in ../lib/linux/libc.so section .bss > > /lib/libc.so.6: could not read symbols: Bad value > > > > Here, the lib/libc.so.6 is a Redhat libc library where as > ../lib/linux/libc.so is a FreeBSD library (libc.so.7). > > > > My question is: Is it possible to use the FreeBSD libthr.a library on a > Redhat Linux distribution? > As I known, it's not possible unless you port the libthr to Linux system. Linux use clone() system call to implement thread library and FreeBSD use a different way(KSE). > > > > Thanks in advance. > > > > With Regards, > > Srinivas G > _______________________________________________ > freebsd-hackers@freebsd.org mailing list > http://lists.freebsd.org/mailman/listinfo/freebsd-hackers > To unsubscribe, send any mail to "freebsd-hackers-unsubscribe@freebsd.org" >
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