Hi all, Kudos to all who work on this most valuable project. Now, back to whining... :-) Still failing to get 64-bit MacPorts to work properly, I though I'd relay my progress so far. The short story is some ports do not compile properly as ppc64. Others do, but don't compile properly on x86_64. I'm prepared, of course, to notify the individual maintainers of these ports, but first I'd like your opinion on whether my general strategy is sound. Note: I've given up the "universal" strategy using MacPorts 1.7 (trunk) for the time being, as I can't even get '+universal' to work on Leopard (see this post: http://lists.macosforge.org/pipermail/macports-dev/2008-March/004704.html) . But maybe this is a known issue? * Case 1: Installing ppc and ppc64 binaries in separate directories Environment: OS X Server 10.5.2, MacPorts 1.6, Dual G5 PM. - Installing from disk image to /opt/local produces a working MacPorts installation. I use this to install 32-bit binaries and libraries. - Installing a second 1.6 MacPorts from source to /opt/local-64/, following the instructions in the MacPorts Guide also works fine, configured as follows: # ./configure --prefix=/opt/local-64 --with-tclpackage=/Library/Tcl/ macports-64 - I then edit /opt/local-64/share/macports/Tcl/port1.0/ portconfigure.tcl: default configure.m64 yes default configure.mtune {"G5"} - The following ports (prerequisites) now produce ppc64 binaries and libraries. Manual compilation of ppc64 binaries depending on these libraries also work fine. expat, libiconv, gettext (w/ deps), popt - Trying to install 64-bit "R", I fail on some dependencies: "gmp" builds, but needs to be edited as follows: configure.env ABI=mode64 "mpfr" builds. "gcc42" (for some reason a library and compiler dependency) I cannot get it to to compile on 64-bit. Some stages produce ppc64 object files but some ignore the -m64 flag and build ppc object files. Needless to say, the linker is not happy. * Case 2: Installing i386 and x86_64 "universal" binaries. Environment: OS X 10.5.2, MacPorts 1.6, CoreDuo MBP (32-bit machine, I know!) - Installed MacPorts 1.6 from disk image into /opt/local, then editing the following files: variants.conf: added +universal portconfigure.tcl set/added "-arch i386 -arch x86_64" in default variables: configure.universal_cflags, configure.universal_cxxflags, configure.universal_ldflags - Trying to install 64-bit "R", I fail on some dependencies: "gmp" builds, but needs to be edited as follows. This is reasonable, as this port does not have a universal variant, plus I'm on a 32-bit machine: configure.cflags-append -m64 "mpfr" fails in the configure stage: "configure: error: libgmp not found or uses a different ABI". I suspect this is due to the configure script trying to compile and run a 64-bit code snippet, which of course will fail on the CoreDuo. I will try to get my hands on a proper x86_64 machine and let you know how it turns out. "gcc42" depends on mpfr, so this has not been tested yet. Any feedback is appreciated. A 64-bit clean MacPorts would (in my view) be a significant improvement to an already great tool. TIA, /Emil