大家好，费了好大劲总算装好了arpack，安装目录在/home/tianhongyu/arpack/ARPACK，下面是我的RAmake.inc配置：

# %--------------------------------------%
# | You should change the definition of  |
# | home if ARPACK is built some place   |
# | other than your home directory.      |
# %--------------------------------------%
#
home= /home/tianhongyu/arpack/ARPACK
PLAT = LINUXBLASdir      = $(home)/BLAS
LAPACKdir    = $(home)/LAPACK
UTILdir      = $(home)/UTIL
SRCdir       = $(home)/SRC

ARPACKLIB  = $(home)/libarpack_$(PLAT).a
LAPACKLIB =
BLASLIB =
#
ALIBS =  $(ARPACKLIB) $(LAPACKLIB) $(BLASLIB)

FC      = gfortran
FFLAGS = -O
LDFLAGS =
CD      = cd

ECHO    = echo

LN      = ln
LNFLAGS = -s

MAKE    =/usr/bin/make

RM      = rm
RMFLAGS = -f

SHELL   = /bin/sh

AR = ar
ARFLAGS = rv
#RANLIB  = touch
RANLIB   = ranlib

有几个问题想请教下：我用的是gfortran编辑器，FFLAGS该怎么设置呢？

FC      = gfortran
FFLAGS = -O
这样设置没提示出错，但是有没有其他设置，可以算起来更快些啊？

另外，在make SIMPLE下面一个子程序：

make cnsimp

的时候出错了：

/home/tianhongyu/arpack/ARPACK/libarpack_LINUX.a(second.o): In function `second_':
second.f:(.text+0x11): undefined reference to `etime_'
collect2: ld returned 1 exit status
make: *** [cnsimp] Error 1
我查了下secon.f在UTIL下面，现在将它复制一下，帮我看下怎么修改参数：

      SUBROUTINE SECOND( T )
*
      REAL       T
*
*  -- LAPACK auxiliary routine (preliminary version) --
*     Univ. of Tennessee, Univ. of California Berkeley, NAG Ltd.,
*     Courant Institute, Argonne National Lab, and Rice University
*     July 26, 1991
*
*  Purpose
*  =======
*
*  SECOND returns the user time for a process in seconds.
*  This version gets the time from the system function ETIME.
*
*     .. Local Scalars ..
      REAL               T1

      REAL               TARRAY( 2 )
        REAL    ETIME
      EXTERNAL         ETIME
      T1 = ETIME( TARRAY )
      T  = TARRAY( 1 )

      RETURN
      END

谢谢大家了！！！帮帮我吧。哎。。。好难啊！！