好吧,我有这个问题(描述很长,但是我认为很容易解决)。我有三个文件:nrtype.f90
,具有一些愚蠢的定义,但是由以下文件使用:
module nrtype
integer, parameter :: I4B = SELECTED_INT_KIND(9)
integer, parameter :: I2B = SELECTED_INT_KIND(4)
integer, parameter :: I1B = SELECTED_INT_KIND(2)
integer, parameter :: SP = KIND(1.0)
integer, parameter :: DP = KIND(1.0D0)
endmodule nrtype
LUd.f90
,这是工作的一部分:module descomposicionLU
use nrtype
implicit none
contains
subroutine LUd(A, LU, bk)
implicit none
real(DP), intent (in), dimension(:,:) :: A
real(DP), intent (out), dimension(:,:) :: LU
integer(I2B), dimension(size(A,1),2) :: bk
<more code that doesn't worth to mention>
endsubroutine LUd
<more code that doesn't worth to mention>
endmodule descomposicionLU
一个名为
FrontBackSub.f90
的文件,它负责其他工作:module FrontBack
use nrtype
implicit none
contains
function FrontSLU(A,B) result (X)
implicit none
real(DP), dimension(:,:), intent (in) :: A, B
real(DP), dimension(size(B,1),size(B,2)) :: X
<more code>
endfunction FrontSLU
endmodule FrontBack
最后是
main.f90
,如下所示:program main
use descomposicionLU
use FrontBack
implicit none
integer, parameter :: N=3
real(DP), dimension(N,N) :: MA, MLU
integer(I2B), dimension(N,2) :: Vbk
MA(1,:)=(/1.0, 7.0, 11.0/)
MA(2,:)=(/14.0, 24.0, 19.0/)
MA(3,:)=(/7.0, 8.0, 9.0/)
call LUd(MA, MLU, Vbk)
endprogram main
但是,问题出在编译期间,使用
ifort nrtype.f90 FrontBackSub.f90 LUd.f90 FrontBackSub.f90 main.f90
我有:/tmp/ifortbW2y7D.o: In function `frontback._':
FrontBackSub.f90:(.text+0x0): multiple definition of `frontback._'
/tmp/ifortVQdBCN.o:FrontBackSub.f90:(.text+0x0): first defined here
/tmp/ifortbW2y7D.o: In function `frontback_mp_frontslu_':
FrontBackSub.f90:(.text+0x10): multiple definition of `frontback_mp_frontslu_'
/tmp/ifortVQdBCN.o:FrontBackSub.f90:(.text+0x10): first defined here
/tmp/ifortbW2y7D.o: In function `frontback_mp_backs_':
FrontBackSub.f90:(.text+0x460): multiple definition of `frontback_mp_backs_'
/tmp/ifortVQdBCN.o:FrontBackSub.f90:(.text+0x460): first defined here
或者,更明确地说,使用
gfortran nrtype.f90 FrontBackSub.f90 LUd.f90 FrontBackSub.f90 main.f90
:/tmp/ccpZnjOp.o: In function `__frontback_MOD_backs':
FrontBackSub.f90:(.text+0x0): multiple definition of `__frontback_MOD_backs'
/tmp/ccsr4QjQ.o:FrontBackSub.f90:(.text+0x0): first defined here
/tmp/ccpZnjOp.o: In function `__frontback_MOD_frontslu':
FrontBackSub.f90:(.text+0x582): multiple definition of `__frontback_MOD_frontslu'
/tmp/ccsr4QjQ.o:FrontBackSub.f90:(.text+0x582): first defined here
collect2: error: ld returned 1 exit status
因此,它说
FrontBackSub.f90
中的函数(它是复数的,因为当我添加新函数时问题会扩展到它们)被定义了好几次,而显然没有。我看不到的问题在哪里?
感谢您的时间朋友。
最佳答案
为什么在compile命令中有两次源FrontBackSub.f90
?只是不要那样做。
关于linker - fortran中的多定义链接错误(ifort-gfortran),我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/20059177/