Date: Sat, 14 Jun 2003 13:58:07 -0500 From: Karl Denninger <karl@denninger.net> To: Dan Nelson <dnelson@allantgroup.com> Cc: freebsd-current@freebsd.org Subject: Re: Compiling under 5.x for 4.x releases? Message-ID: <20030614135807.A1198@Denninger.Net> In-Reply-To: <20030614172811.GR53468@dan.emsphone.com>; from Dan Nelson on Sat, Jun 14, 2003 at 12:28:11PM -0500 References: <20030614113234.A557@Denninger.Net> <20030614094129.W79103@carver.gumbysoft.com> <20030614115137.A734@Denninger.Net> <20030614172811.GR53468@dan.emsphone.com>
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Thanks; I guess that means that for now I keep the production build machine is 4.8-STABLE, and I keep 5.x as a "play" environment until people move over. The fun will begin when migration begins in significant numbers, but I still need to support both! -- -- Karl Denninger (karl@denninger.net) Internet Consultant & Kids Rights Activist http://www.denninger.net Tired of spam at your company? LOOK HERE! http://childrens-justice.org Working for family and children's rights http://diversunion.org LOG IN AND GET YOUR TANK STICKERS TODAY! On Sat, Jun 14, 2003 at 12:28:11PM -0500, Dan Nelson wrote: > In the last episode (Jun 14), Karl Denninger said: > > On Sat, Jun 14, 2003 at 09:43:01AM -0700, Doug White wrote: > > > On Sat, 14 Jun 2003, Karl Denninger wrote: > > > > > > > Can it be done with a command-line switch to the compiler or gcc, > > > > or am I consigned to dual-booting? > > > > > > You mean building apps linked against 4.X libs vs. 5.X? With some > > > creative -L flags you might be able to get it to not use > > > /usr/lib/libc* and use /usr/lib/compat/libc* instead, which has > > > copies of certain 4.X libs in it. > > > > > > Let us know if you get it working :) > > > > Will play with that one.... > > That won't work. The reason shared libraries get their versions bumped > and the old ones move into compat is that the ABI changes. Unless you > kept the headers for those old shlibs laying around someplace, gcc will > compile programs using the ABI for the libs in /usr/lib. > > > The problem is that I have a lot of users on the 4.x release(s) of > > the OS, and have binary apps that I'm supporting for them. Linking > > static is an option, but does ugly things to the file sizes. > > That will break the first time a 5.0-compiled library decides to use a > syscall not in 4.x.
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