Summary of my perl5 (revision 5 version 8 subversion 7) configuration:
  Platform:
    osname=linux, osvers=2.4.21-23.elsmp, archname=i386-linux-thread-m
+ulti
    uname='linux bugs.build.redhat.com 2.4.21-23.elsmp #1 smp thu oct 
+28 20:10:03 edt 2004 i686 i686 i386 gnulinux '
    config_args='-des -Doptimize=-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOU
+RCE=2 -fexceptions -fstack-protector --param=ssp-buffer-size=4 -m32 -
+march=i386 -mtune=pentium4 -fasynchronous-unwind-tables -Dversion=5.8
+.7 -Dmyhostname=localhost -Dperladmin=root@localhost -Dcc=gcc -Dcf_by
+=Red Hat, Inc. -Dinstallprefix=/usr -Dprefix=/usr -Darchname=i386-lin
+ux -Dvendorprefix=/usr -Dsiteprefix=/usr -Duseshrplib -Dusethreads -D
+useithreads -Duselargefiles -Dd_dosuid -Dd_semctl_semun -Di_db -Ui_nd
+bm -Di_gdbm -Di_shadow -Di_syslog -Dman3ext=3pm -Duseperlio -Dinstall
+usrbinperl=n -Ubincompat5005 -Uversiononly -Dpager=/usr/bin/less -isr
+ -Dd_gethostent_r_proto -Ud_endhostent_r_proto -Ud_sethostent_r_proto
+ -Ud_endprotoent_r_proto -Ud_setprotoent_r_proto -Ud_endservent_r_pro
+to -Ud_setservent_r_proto -Dinc_version_list=5.8.6 5.8.5 5.8.4 5.8.3 
+-Dscriptdir=/usr/bin'    hint=recommended, useposix=true, d_sigaction
+=define
    usethreads=define use5005threads=undef useithreads=define usemulti
+plicity=define
    useperlio=define d_sfio=undef uselargefiles=define usesocks=undef
    use64bitint=undef use64bitall=undef uselongdouble=undef
    usemymalloc=n, bincompat5005=undef
  Compiler:
    cc='gcc', ccflags ='-D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasin
+g -pipe -I/usr/local/include -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=
+64 -I/usr/include/gdbm',
    optimize='-O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions 
+-fstack-protector --param=ssp-buffer-size=4 -m32 -march=i386 -mtune=p
+entium4 -fasynchronous-unwind-tables',
    cppflags='-D_REENTRANT -D_GNU_SOURCE -fno-strict-aliasing -pipe -I
+/usr/local/include -I/usr/include/gdbm'
    ccversion='', gccversion='4.0.1 20050831 (Red Hat 4.0.1-12)', gcco
+sandvers=''
    intsize=4, longsize=4, ptrsize=4, doublesize=8, byteorder=1234
    d_longlong=define, longlongsize=8, d_longdbl=define, longdblsize=1
+2
    ivtype='long', ivsize=4, nvtype='double', nvsize=8, Off_t='off_t',
+ lseeksize=8
    alignbytes=4, prototype=define
  Linker and Libraries:
    ld='gcc', ldflags =' -L/usr/local/lib'
    libpth=/usr/local/lib /lib /usr/lib
    libs=-lresolv -lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lpthread 
+-lc
    perllibs=-lresolv -lnsl -ldl -lm -lcrypt -lutil -lpthread -lc
    libc=/lib/libc-2.3.90.so, so=so, useshrplib=true, libperl=libperl.
+so
    gnulibc_version='2.3.90'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs, dlext=so, d_dlsymun=undef, ccdlflags='-Wl,-E -
+Wl,-rpath,/usr/lib/perl5/5.8.7/i386-linux-thread-multi/CORE'
    cccdlflags='-fPIC', lddlflags='-shared -L/usr/local/lib'
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According to that, your compiler is gcc, as you and I both expected. Where is cc1 coming from? Did you install another compiler or some sort of compiler cache in the meantime? What do you get if you type cc1 --help?