libunwind-headers: build failed

[josiguer@…]

--->  Computing dependencies for wine
--->  Dependencies to be installed: apple-gcc42 cctools ld64 libunwind-headers llvm-3.1 libffi llvm_select gcc_select bison gettext expat libiconv gperf ncurses m4 xz flex fontconfig freetype bzip2 zlib pkgconfig glib2 perl5 perl5.12 gdbm gst-plugins-base gnome-vfs desktop-file-utils popt gconf dbus-glib dbus gtk-doc docbook-xml docbook-xml-4.1.2 xmlcatmgr docbook-xml-4.2 docbook-xml-4.3 docbook-xml-4.4 docbook-xml-4.5 docbook-xml-5.0 docbook-xsl gnome-doc-utils intltool gnome-common p5.12-getopt-long p5.12-pathtools p5.12-scalar-list-utils p5.12-xml-parser iso-codes libxslt libxml2 py27-libxml2 python27 db46 libedit openssl python_select sqlite3 rarian getopt gtk2 atk gobject-introspection cairo libpixman libpng xorg-xcb-util xorg-libxcb xorg-libXau xorg-xproto xorg-libXdmcp xorg-libpthread-stubs xorg-xcb-proto xrender xorg-libX11 xorg-bigreqsproto xorg-inputproto xorg-kbproto xorg-xcmiscproto xorg-xextproto xorg-xf86bigfontproto xorg-xtrans xorg-renderproto gdk-pixbuf2 jasper jpeg tiff hicolor-icon-theme pango Xft2 shared-mime-info xorg-libXcomposite xorg-compositeproto xorg-libXext autoconf help2man p5.12-locale-gettext automake libtool xorg-util-macros xorg-libXfixes xorg-fixesproto xorg-libXcursor xorg-libXdamage xorg-damageproto xorg-libXi xorg-libXinerama xorg-xineramaproto xorg-libXrandr xorg-randrproto orbit2 libidl policykit eggdbus p5-xml-parser gnome-mime-data gstreamer gzip texinfo libtheora libvorbis libogg orc lcms mesa makedepend xorg-dri2proto xorg-glproto xorg-libXmu xorg-libXt xorg-libsm xorg-libice xorg-libXxf86vm xorg-xf86vidmodeproto
--->  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: apple-gcc42 cctools ld64 libunwind-headers llvm-3.1 libffi llvm_select gcc_select bison gettext expat libiconv gperf ncurses m4 xz flex fontconfig freetype bzip2 zlib pkgconfig glib2 perl5 perl5.12 gdbm gst-plugins-base gnome-vfs desktop-file-utils popt gconf dbus-glib dbus gtk-doc docbook-xml docbook-xml-4.1.2 xmlcatmgr docbook-xml-4.2 docbook-xml-4.3 docbook-xml-4.4 docbook-xml-4.5 docbook-xml-5.0 docbook-xsl gnome-doc-utils intltool gnome-common p5.12-getopt-long p5.12-pathtools p5.12-scalar-list-utils p5.12-xml-parser iso-codes libxslt libxml2 py27-libxml2 python27 db46 libedit openssl python_select sqlite3 rarian getopt gtk2 atk gobject-introspection cairo libpixman libpng xorg-xcb-util xorg-libxcb xorg-libXau xorg-xproto xorg-libXdmcp xorg-libpthread-stubs xorg-xcb-proto xrender xorg-libX11 xorg-bigreqsproto xorg-inputproto xorg-kbproto xorg-xcmiscproto xorg-xextproto xorg-xf86bigfontproto xorg-xtrans xorg-renderproto gdk-pixbuf2 jasper jpeg tiff hicolor-icon-theme pango Xft2 shared-mime-info xorg-libXcomposite xorg-compositeproto xorg-libXext autoconf help2man p5.12-locale-gettext automake libtool xorg-util-macros xorg-libXfixes xorg-fixesproto xorg-libXcursor xorg-libXdamage xorg-damageproto xorg-libXi xorg-libXinerama xorg-xineramaproto xorg-libXrandr xorg-randrproto orbit2 libidl policykit eggdbus p5-xml-parser gnome-mime-data gstreamer gzip texinfo libtheora libvorbis libogg orc lcms mesa makedepend xorg-dri2proto xorg-glproto xorg-libXmu xorg-libXt xorg-libsm xorg-libice xorg-libXxf86vm xorg-xf86vidmodeproto
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Error: Processing of port wine failed

[ryandesign (Ryan Carsten Schmidt)]

We can't know what happened unless you attach the main.log file mentioned above. However, you may simply need to accept the Xcode license agreement as root; see wiki:ProblemHotlist#xcode-eula and #35336.