Bugzilla Bug 234754

Trying to compile hydrogen but no luck.
media-sound/hydrogen-0.9.3-r3  USE="flac jack ladspa oss -alsa -debug -doc"

# emerge hydrogen
(..)
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Now type make to build Hydrogen.
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src/lib/Hydrogen.cpp: In function ‘int randomValue(int)’:
src/lib/Hydrogen.cpp:208: error: ‘rand’ was not declared in this scope
src/lib/Hydrogen.cpp: In function ‘float getGaussian(float)’:
src/lib/Hydrogen.cpp:216: error: ‘rand’ was not declared in this scope
src/lib/Hydrogen.cpp:216: error: ‘RAND_MAX’ was not declared in this scope
src/lib/Hydrogen.cpp: In function ‘void audioEngine_init()’:
src/lib/Hydrogen.cpp:293: error: ‘srand’ was not declared in this scope
make[1]: *** [src/Hydrogen.o] Error 1
make: *** [hydrogenPlayer] Error 2


# emerge --info
Portage 2.2_rc8 (default/linux/x86/2008.0/desktop, gcc-4.3.1,
glibc-2.8_p20080602-r0, 2.6.24-zen3-gen2 i686)
=================================================================
System uname: Linux-2.6.24-zen3-gen2-i686-AMD_Athlon-tm-_XP_2600+-with-glibc2.0
Timestamp of tree: Thu, 14 Aug 2008 07:04:01 +0000
app-shells/bash:     3.2_p39
dev-java/java-config: 1.3.7, 2.1.6-r1
dev-lang/python:     2.5.2-r7
sys-apps/baselayout: 2.0.0
sys-apps/openrc:     0.2.5
sys-apps/sandbox:    1.2.18.1-r3
sys-devel/autoconf:  2.13, 2.62-r1
sys-devel/automake:  1.4_p6, 1.5, 1.7.9-r1, 1.8.5-r3, 1.9.6-r2, 1.10.1-r1
sys-devel/binutils:  2.18-r3
sys-devel/gcc-config: 1.4.0-r4
sys-devel/libtool:   2.2.4
virtual/os-headers:  2.6.23-r3
ACCEPT_KEYWORDS="x86 ~x86"
CBUILD="i686-pc-linux-gnu"
CFLAGS="-march=athlon-xp -Os -pipe -fomit-frame-pointer"
CHOST="i686-pc-linux-gnu"
CONFIG_PROTECT="/etc /usr/kde/3.5/env /usr/kde/3.5/share/config
/usr/kde/3.5/shutdown /usr/share/config"
CONFIG_PROTECT_MASK="/etc/ca-certificates.conf /etc/env.d /etc/env.d/java/
/etc/fonts/fonts.conf /etc/gconf /etc/gentoo-release
/etc/php/apache2-php5/ext-active/ /etc/php/cgi-php5/ext-active/
/etc/php/cli-php5/ext-active/ /etc/revdep-rebuild /etc/terminfo
/etc/texmf/web2c /etc/udev/rules.d"
CXXFLAGS="-march=athlon-xp -Os -pipe -fomit-frame-pointer"
DISTDIR="/usr/portage/distfiles"
FEATURES="distlocks parallel-fetch prelink sandbox sfperms strict
unmerge-orphans userfetch"
GENTOO_MIRRORS=" #http://gentoo.prz.rzeszow.pl
ftp://pandemonium.tiscali.de/pub/gentoo/
ftp://ftp-stud.fht-esslingen.de/pub/Mirrors/gentoo/
ftp://sunsite.informatik.rwth-aachen.de/pub/Linux/gentoo"
LANG="pl_PL.UTF8"
LC_ALL="pl_PL.UTF8"
LDFLAGS="-Wl,-O1"
LINGUAS="pl"
MAKEOPTS="-j2 -s"
PKGDIR="/usr/portage/packages"
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="/usr/portage/distfiles/porttmp/"
PORTDIR="/usr/portage"
PORTDIR_OVERLAY="/usr/local/portage/layman/sunrise
/usr/local/portage/layman/oss-overlay /usr/local/portage/layman/mpd
/usr/local/portage/layman/roslin /usr/local/portage/layman/pro-audio
/usr/local/portage/layman/zugaina /usr/local/portage/layman/emdzientoo
/usr/local/portage/local-overlay /usr/local/portage/custom-kernels"
SYNC="rsync://rsync.gentoo.org/gentoo-portage"
USE="3dnow 3dnowext 7zip X a52 aac aalib ace acl acpi asf audacious audiofile
avi bash-completion berkdb bluetooth branding bzip2 cairo cdaudio cddb
cdparanoia cdr cli compress cpio cracklib crypt css cups dbus directfb dri dssi
dts dv dvd dvdnav dvdr dvdread eds emboss encode evo exif fbcon ffmpeg firefox
flac flash fluxbox fortran ftp gcj gdbm gif gnuplot gnutls gphoto2 gpm gsm gtk
gtk2 hyperestraier iconv imagemagick imap imlib isdnlog jabber jack jce jpeg
kerberos kqemu ladspa lame latex libcaca libnotify libsexy live lm_sensors mad
maildir mailwrapper matroska mbox midi mikmod mime mmx mmxext modplug mp3 mpeg
mplayer mudflap musepack ncurses newspr nls nptl nptlonly nsplugin nvidia ogg
oggvorbis opengl openmp oss oss4 pam pcre pdf perl plotutils png pop ppds pppd
print printer python qt3 qt3support qt4 quicktime radio rar readline real
recode reflection sasl sdl sensord session slang smtp sndfile sox spell spl srt
sse ssl startup-notification streamripper svg sysfs tcl tcpd tetex theora
threads tiff tk truetype unicode usb userpriv v4l v4l2 vcd vcdimager vesafb-tng
video vidix vim-syntax vim-with-x vorbis vst wavepack win32codecs wma wmf wmv
x264 x86 xchattext xcomposite xface xine xml xorg xosd xscreensaver xv xvid zip
zlib zsh-completion zynaddsubfx" ALSA_CARDS="emu10k1" 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" KERNEL="linux" LINGUAS="pl" USERLAND="GNU"
VIDEO_CARDS="vesa nv nvidia"
Unset:  CPPFLAGS, CTARGET, EMERGE_DEFAULT_OPTS, INSTALL_MASK, PORTAGE_COMPRESS,
PORTAGE_COMPRESS_FLAGS, PORTAGE_RSYNC_EXTRA_OPTS

Expected Results:  
media-sound/hydrogen-0.9.3-r3 should compile fine

should be fixed now, thanks for reporting

It's working fine now.

Thank You!