直接emerge scilab-4.0.0.ebuild到了最后步骤时出错了，提示如下：
什么原因啊？郁闷....
[code:1]
make[3]: Leaving directory `/var/tmp/portage/scilab-4.0/work/scilab-4.0/pvm3/pvmgs/LINUX'
done building group server and library
make[2]: Leaving directory `/var/tmp/portage/scilab-4.0/work/scilab-4.0/pvm3'
make[1]: Leaving directory `/var/tmp/portage/scilab-4.0/work/scilab-4.0/pvm3'
linking
/var/tmp/portage/scilab-4.0/work/scilab-4.0/pvm3/lib/LINUX/libpvm3.a(lpvmgen.o)(.text+0x30c): In function `pvmlogperror':
: warning: `sys_errlist' is deprecated; use `strerror' or `strerror_r' instead
/var/tmp/portage/scilab-4.0/work/scilab-4.0/pvm3/lib/LINUX/libpvm3.a(lpvmgen.o)(.text+0x303): In function `pvmlogperror':
: warning: `sys_nerr' is deprecated; use `strerror' or `strerror_r' instead
/var/tmp/portage/scilab-4.0/work/scilab-4.0/libs/system.a(scicurdir.o)(.text+0x73): In function `scigetcwd_':
: warning: the `getwd' function is dangerous and should not be used.
/var/tmp/portage/scilab-4.0/work/scilab-4.0/libs/os_specific.a(link.o)(.text+0x59c): In function `CreateShared':
: warning: the use of `mktemp' is dangerous, better use `mkstemp'
/var/tmp/portage/scilab-4.0/work/scilab-4.0/libs/os_specific.a(getarg.o)(.text+0x7): In function `sciiargc_':
: undefined reference to `_gfortran_iargc'
/var/tmp/portage/scilab-4.0/work/scilab-4.0/libs/os_specific.a(getarg.o)(.text+0x34): In function `scigetarg_':
: undefined reference to `_gfortran_getarg_i4'
collect2: ld returned 1 exit status
make: *** [bin/scilex] Error 1

!!! ERROR: sci-mathematics/scilab-4.0 failed.
Call stack:
  ebuild.sh, line 1539:   Called dyn_compile
  ebuild.sh, line 939:   Called src_compile
  scilab-4.0.ebuild, line 85:   Called die

!!! emake failed
!!! If you need support, post the topmost build error, and the call stack if relevant.

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