Date: Fri, 05 Sep 2003 19:40:00 -0400 From: "Brandon S. Allbery KF8NH" <allbery@ece.cmu.edu> To: freebsd@yazzy.org Cc: ports@freebsd.org Subject: Re: Problem with porting of an application which depends on linux libs. Message-ID: <1062805199.25955.6.camel@pyanfar.ece.cmu.edu> In-Reply-To: <21881.193.215.241.28.1062803807.squirrel@mail.yazzy.org> References: <21881.193.215.241.28.1062803807.squirrel@mail.yazzy.org>
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On Fri, 2003-09-05 at 19:16, Martin Jessa wrote: > The libdl library is included in glibc which is located in > /usr/compat/linux/lib/libdl.so.2 > How can I use this library with my port? > I suspect it isn't possible to link freebsd executables against linux libs. > Or is it? > > > Error message: > checking for dlsym in -ldl... no > configure: error: libdl is required > ===> Script "configure" failed unexpectedly. The short answer is "the application is Linux-specific". The longer one: dlsym() happens to be in -ldl on Linux, but is in -lc on FreeBSD. config.in needs to be modified to check for dlsym() being in libc, and only if it's not found try looking in -ldl; then autoconf needs to be re-run to generate a new configure script. But this should be taken as a warning that there may be other hidden Linux-specific issues to deal with; the fix is *never* to try to link against Linux compatibility libraries, but to port the application to use the appropriate FreeBSD libraries and services. -- brandon s. allbery [linux,solaris,freebsd,perl] allbery@kf8nh.com system administrator [WAY too many hats] allbery@ece.cmu.edu electrical and computer engineering, carnegie mellon univ. KF8NH URGENT! E-xpedient nuked APK subdomains; kf8nh.apk.net is DEAD. Sorry.
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