On Wed, Jan 4, 2012 at 2:29 PM, Luigi Rizzo <rizzo_at_iet.unipi.it> wrote: > On Wed, Jan 04, 2012 at 02:10:36PM -0800, Garrett Cooper wrote: >> On Wed, Jan 4, 2012 at 2:23 PM, Luigi Rizzo <rizzo_at_iet.unipi.it> wrote: >> > Hi, >> > in doing cross-builds of picobsd, i found i need a cross-version >> > of "ldd" so i can run it on the host to detect which shared libraries >> > are used by binaries on the target architecture >> > (for amd64->i386 there is a partial workaround, but don't know >> > if it works in other cases) >> > >> > Is there any concern in adding usr.bin/ldd to the list of cross-tools >> > in Makefile.inc1 ? It is a small program and should not increase >> > the build time in any significant way. >> > >> > Otherwise, does anyone know the magic to build a cross-arch >> > version of a program in the FreeBSD source tree ? >> >> objdump IMO is a lot easier to parse and it's already built via cross-tools: >> >> $ objdump -x `which tar` | awk '$1 == "NEEDED" { print $2 }' >> libarchive.so.5 >> libbz2.so.4 >> libz.so.6 >> liblzma.so.5 >> libbsdxml.so.4 >> libcrypto.so.6 >> libc.so.7 > > wonderful, thanks! Np! The only gap with both of these tools is that you have to watch out for dl_open'ed binaries as they won't show up in ldd/objdump -x. If I could figure out how to detect these with a command line tool, I would be set for life :). Thanks, -GarrettReceived on Wed Jan 04 2012 - 21:30:27 UTC
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