% sudo port install gcc46
dyld: DYLD_ environment variables being ignored because main executable (/usr/bin/sudo) is setuid or setgid
Password:
--->  Computing dependencies for gcc46
--->  Dependencies to be installed: cctools cctools-headers ld64 dyld-headers libunwind-headers llvm-3.1 llvm_select cloog gmp isl gcc_select libmpc mpfr ppl glpk
--->  Fetching archive for cctools-headers
--->  Attempting to fetch cctools-headers-822_2.darwin_12.noarch.tbz2 from http://packages.macports.org/cctools-headers
--->  Attempting to fetch cctools-headers-822_2.darwin_12.noarch.tbz2 from http://macports.packages.ionic.de/cctools-headers
--->  Fetching distfiles for cctools-headers
--->  Attempting to fetch cctools-822.tar.gz from http://ykf.ca.distfiles.macports.org/MacPorts/mpdistfiles/cctools-headers
--->  Attempting to fetch xnu-1699.24.8.tar.gz from http://ykf.ca.distfiles.macports.org/MacPorts/mpdistfiles/cctools-headers
--->  Verifying checksum(s) for cctools-headers
--->  Extracting cctools-headers
--->  Configuring cctools-headers
--->  Building cctools-headers
--->  Staging cctools-headers into destroot
--->  Installing cctools-headers @822_2
--->  Activating cctools-headers @822_2
--->  Cleaning cctools-headers
--->  Fetching archive for dyld-headers
--->  Attempting to fetch dyld-headers-195.6_1.darwin_12.noarch.tbz2 from http://packages.macports.org/dyld-headers
--->  Attempting to fetch dyld-headers-195.6_1.darwin_12.noarch.tbz2 from http://macports.packages.ionic.de/dyld-headers
--->  Fetching distfiles for dyld-headers
--->  Attempting to fetch dyld-195.6.tar.gz from http://ykf.ca.distfiles.macports.org/MacPorts/mpdistfiles/dyld-headers
--->  Verifying checksum(s) for dyld-headers
--->  Extracting dyld-headers
--->  Configuring dyld-headers
--->  Building dyld-headers
--->  Staging dyld-headers into destroot
--->  Installing dyld-headers @195.6_1
--->  Activating dyld-headers @195.6_1
--->  Cleaning dyld-headers
--->  Fetching archive for libunwind-headers
--->  Attempting to fetch libunwind-headers-30_4.darwin_12.noarch.tbz2 from http://packages.macports.org/libunwind-headers
--->  Attempting to fetch libunwind-headers-30_4.darwin_12.noarch.tbz2 from http://macports.packages.ionic.de/libunwind-headers
--->  Fetching distfiles for libunwind-headers
--->  Attempting to fetch libunwind-30.tar.gz from http://ykf.ca.distfiles.macports.org/MacPorts/mpdistfiles/libunwind-headers
--->  Verifying checksum(s) for libunwind-headers
--->  Extracting libunwind-headers
--->  Configuring libunwind-headers
--->  Building libunwind-headers
Error: org.macports.build for port libunwind-headers returned: command execution failed
Error: Failed to install libunwind-headers
Please see the log file for port libunwind-headers for details:
    /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_devel_libunwind-headers/libunwind-headers/main.log
Error: The following dependencies were not installed: cctools ld64 libunwind-headers llvm-3.1 llvm_select cloog gmp isl gcc_select libmpc mpfr ppl glpk
To report a bug, follow the instructions in the guide:
    http://guide.macports.org/#project.tickets
Error: Processing of port gcc46 failed