[proaudio] Can't emerge libclam-1.4: error USE_SNDFILE was not set to 1 in your settings.cfg

[Colleen A Josephson <cjoseph@xxxxxxx>]

I'm having trouble installing libclam-1.4. I get this error in the log:

In file included from scons/libs/audioio/include/CLAM/AudioFile.hxx:26,
                 from scons/libs/audioio/include/CLAM/MonoAudioFileReader.hxx:28,
                 from scons/libs/audioio/include/CLAM/AudioFileMemoryLoader..hxx:26,
                 from scons/libs/audioio/src/AudioFileMemoryLoader.cxx:22:
scons/libs/audioio/include/CLAM/AudioFileFormats.hxx:26:2: error: #error USE_SNDFILE was not set to 1 in your settings.cfg file, but you are including files that require this. Please fix your settings.cfg
scons: *** [scons/libs/audioio/src/AudioFileMemoryLoader.os] Error 1
scons: building terminated because of errors.
 ^[[31;01m*^[[0m ERROR: media-libs/libclam-1.4.0 failed:
 ^[[31;01m*^[[0m   compilation failed
 ^[[31;01m*^[[0m
 ^[[31;01m*^[[0m Call stack:
 ^[[31;01m*^[[0m     ebuild.sh, line  54:  Called src_compile
 ^[[31;01m*^[[0m   environment, line 2923:  Called die
 ^[[31;01m*^[[0m The specific snippet of code:
 ^[[31;01m*^[[0m       scons || die "compilation failed"
 ^[[31;01m*^[[0m

Some relevant stuffs:
emerge -pqv =media-libs/libclam-1.4.0
[ebuild  N    ] media-libs/libclam-1.4.0  USE="alsa mad vorbis -doc -double -fft -fftw -jack -ladspa -optimize -osc -portaudio -sndfile" 

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More emerge info:
emerge --info =media-libs/libclam-1.4.0
Portage 2.1.8.3 (default/linux/x86/10.0/desktop, gcc-4.3.4, glibc-2.10.1-r1, 2.6.32-gentoo-r7 i686)
=================================================================
                        System Settings
=================================================================
System uname: Linux-2.6.32-gentoo-r7-i686-Intel-R-_Pentium-R-_4_CPU_3.00GHz-with-gentoo-1.12.13
Timestamp of tree: Sat, 12 Jun 2010 04:30:01 +0000
app-shells/bash:     4.0_p37
dev-lang/python:     2.6.4-r1, 3.1.2-r3
dev-util/cmake:      2.6.4-r3
sys-apps/baselayout: 1.12.13
sys-apps/sandbox:    1.6-r2
sys-devel/autoconf:  2.13, 2.65
sys-devel/automake:  1.8.5-r4, 1.9.6-r3, 1.10.3, 1.11.1
sys-devel/binutils:  2.20.1-r1
sys-devel/gcc:       4.3.4, 4.4.3-r2
sys-devel/gcc-config: 1.4.1
sys-devel/libtool:   2.2.6b
virtual/os-headers:  2.6.30-r1
ACCEPT_KEYWORDS="x86"
ACCEPT_LICENSE="* -@EULA"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-O2 -march=i686 -pipe"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/share/X11/xkb"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/fonts/fonts.conf /etc/gconf /etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/ /etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/sandbox.d /etc/terminfo"
CXXFLAGS="-O2 -march=i686 -pipe"
DISTDIR="/usr/portage/distfiles"
FEATURES="assume-digests distlocks fixpackages news parallel-fetch protect-owned sandbox sfperms strict unmerge-logs unmerge-orphans userfetch"
GENTOO_MIRRORS="http://distfiles.gentoo.org";
LDFLAGS="-Wl,-O1"
MAKEOPTS="-j2"
PKGDIR="/usr/portage/packages"
PORTAGE_CONFIGROOT="/"
PORTAGE_RSYNC_OPTS="--recursive --links --safe-links --perms --times --compress --force --whole-file --delete --stats --timeout=180 --exclude=/distfiles --exclude=/local --exclude=/packages"
PORTAGE_TMPDIR="/var/tmp"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage/layman/gnome /usr/local/portage/layman/zugaina /usr/local/portage/layman/pro-audio /usr/local/portage/layman/gnome /usr/local/portage/layman/zugaina /usr/local/portage/layman/pro-audio /usr/local/portage"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="X a52 aac acl acpi alsa berkdb bluetooth branding bzip2 cairo cdr cli consolekit cracklib crypt cups cxx dbus dri dts dvd dvdr emboss encode exif extras fam firefox flac fortran gdbm gif gpm gtk hal iconv ipv6 jpeg lcms ldap libnotify lock mad mikmod mng modules mp3 mp4 mpeg mudflap ncurses nls nptl nptlonly ogg opengl openmp pam pango pcre pdf perl png ppds pppd python qt3support readline reflection sdl session spell spl ssl startup-notification svg sysfs tcpd thunar tiff truetype unicode usb vorbis x264 x86 xcb xml xorg xulrunner xv xvid zlib" ALSA_CARDS="ali5451 als4000 atiixp atiixp-modem bt87x ca0106 cmipci emu10k1 emu10k1x ens1370 ens1371 es1938 es1968 fm801 hda-intel intel8x0 intel8x0m maestro3 trident usb-audio via82xx via82xx-modem ymfpci" ALSA_PCM_PLUGINS="adpcm alaw asym copy dmix dshare dsnoop empty extplug file hooks iec958 ioplug ladspa lfloat linear meter mmap_emul mulaw multi null plug rate route share shm softvol" APACHE2_MODULES="actions alias auth_basic authn_alias authn_anon authn_dbm authn_default authn_file authz_dbm authz_default authz_groupfile authz_host authz_owner authz_user autoindex cache dav dav_fs dav_lock deflate dir disk_cache env expires ext_filter file_cache filter headers include info log_config logio mem_cache mime mime_magic negotiation rewrite setenvif speling status unique_id userdir usertrack vhost_alias" ELIBC="glibc" INPUT_DEVICES="keyboard mouse evdev" KERNEL="linux" LCD_DEVICES="bayrad cfontz cfontz633 glk hd44780 lb216 lcdm001 mtxorb ncurses text" RUBY_TARGETS="ruby18" USERLAND="GNU" VIDEO_CARDS="radeon" XTABLES_ADDONS="quota2 psd pknock lscan length2 ipv4options ipset ipp2p iface geoip fuzzy condition tee tarpit sysrq steal rawnat logmark ipmark dhcpmac delude chaos account" 
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, FFLAGS, INSTALL_MASK, LANG, LC_ALL, LINGUAS, PORTAGE_COMPRESS, PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS