Error installing new MacPorts base

[maisarojas@…]

maisas-MacBook-Pro:~ maisa$ sudo port -d selfupdate DEBUG: Copying /Users/maisa/Library/Preferences/com.apple.dt.Xcode.plist to /opt/local/var/macports/home/Library/Preferences DEBUG: MacPorts sources location: /opt/local/var/macports/sources/rsync.macports.org/release/base ---> Updating MacPorts base sources using rsync receiving file list ... done ./ deleting config.log

sent 42 bytes received 30280 bytes 6738.22 bytes/sec total size is 25420143 speedup is 838.34 MacPorts base version 2.3.3 installed, DEBUG: Rebuilding and reinstalling MacPorts if needed MacPorts base version 2.3.4 downloaded. ---> Updating the ports tree Synchronizing local ports tree from rsync://rsync.macports.org/release/ports/ DEBUG: /usr/bin/rsync -rtzv --delete-after '--exclude=/PortIndex*' rsync://rsync.macports.org/release/ports/ /opt/local/var/macports/sources/rsync.macports.org/release/ports receiving file list ... done

sent 53 bytes received 813891 bytes 70777.74 bytes/sec total size is 41893831 speedup is 51.47 DEBUG: /usr/bin/rsync -rtzv --delete-after rsync://rsync.macports.org/release/ports/PortIndex_darwin_14_i386/PortIndex /opt/local/var/macports/sources/rsync.macports.org/release/ports receiving file list ... done

sent 36 bytes received 70 bytes 42.40 bytes/sec total size is 13131586 speedup is 123882.89 ---> MacPorts base is outdated, installing new version 2.3.4 DEBUG: Permissions OK Installing new MacPorts release in /opt/local as root:admin; permissions 0755

checking build system type... i386-apple-darwin14.5.0 checking host system type... i386-apple-darwin14.5.0 checking target system type... i386-apple-darwin14.5.0 checking MacPorts version... 2.3.4 checking for sw_vers... /usr/bin/sw_vers checking for defaults... /usr/bin/defaults checking for xcode-select... /usr/bin/xcode-select checking Mac OS X version... 10.10.5 checking Xcode location... /Applications/Xcode.app/Contents/Developer checking Xcode version... 7.0.1 checking whether the C compiler works... no configure: error: in `/opt/local/var/macports/sources/rsync.macports.org/release/base': configure: error: C compiler cannot create executables See `config.log' for more details Command failed: cd /opt/local/var/macports/sources/rsync.macports.org/release/base && CC=/usr/bin/cc OBJC=/usr/bin/cc ./configure --prefix=/opt/local --with-install-user=root --with-install-group=admin --with-directory-mode=0755 --enable-readline && make SELFUPDATING=1 && make install SELFUPDATING=1 Exit code: 77 DEBUG: Error installing new MacPorts base: command execution failed

while executing

"macports::selfupdate [array get global_options] base_updated" Error: Error installing new MacPorts base: command execution failed To report a bug, follow the instructions in the guide:

​http://guide.macports.org/#project.tickets

Error: /opt/local/bin/port: port selfupdate failed: Error installing new MacPorts base: command execution failed