求助:gentoo下编译pidgin错误

小弟在gentoo下编译安装pidgin，一直提示错误。电脑之前已经安装有了老版本的pidgin了。./configure 的结果是提示可以make的，make后的结果如下：（两段）

GtkSession.c: In function ‘boot_Pidgin__Session’:
GtkSession.c:112: warning: passing argument 3 of ‘Perl_newXS’ discards qualifiers from pointer target type
GtkSession.c:113: warning: passing argument 3 of ‘Perl_newXS’ discards qualifiers from pointer target type
GtkSession.c:114: error: ‘PL_unitcheckav’ undeclared (first use in this function)
GtkSession.c:114: error: (Each undeclared identifier is reported only once
GtkSession.c:114: error: for each function it appears in.)
make[5]: *** [GtkSession.o] Error 1

GtkSession.c: In function ‘boot_Pidgin__Session’:
GtkSession.c:112: warning: passing argument 3 of ‘Perl_newXS’ discards qualifiers from pointer target type
GtkSession.c:113: warning: passing argument 3 of ‘Perl_newXS’ discards qualifiers from pointer target type
GtkSession.c:114: error: ‘PL_unitcheckav’ undeclared (first use in this function)
GtkSession.c:114: error: (Each undeclared identifier is reported only once
GtkSession.c:114: error: for each function it appears in.)
make[5]: *** [GtkSession.o] Error 1
make[5]: Leaving directory `/home/pidgin-2.7.4/pidgin/plugins/perl/common'
make[4]: *** [all-local] Error 2
make[4]: Leaving directory `/home/pidgin-2.7.4/pidgin/plugins/perl'
make[3]: *** [all-recursive] Error 1
make[3]: Leaving directory `/home/pidgin-2.7.4/pidgin/plugins'
make[2]: *** [all-recursive] Error 1
make[2]: Leaving directory `/home/pidgin-2.7.4/pidgin'
make[1]: *** [all-recursive] Error 1
make[1]: Leaving directory `/home/pidgin-2.7.4'
make: *** [all] Error 2

大侠们，有解决方法吗