Error LNK2019
in [Fortran]
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From: marcomarco76 on 31 Aug 2007 12:43 Hi everybody, I'm using IVF 9.1 with MSVS 2005 and I'm experiencing a strange problem. I've got a program composed by several subroutines (each in a different file) and it works very well. Now I'm trying to merge all the code in a single file and I receive this message 1>------ Inizio generazione: Progetto: AIEM - single scattering - final, Configurazione: Debug Win32 ------ 1>Compiling with Intel Fortran 9.1 C:\Programmi\Intel\Compiler\Fortran \9.1\IA32\... 1>AIEM_final.F90 1>ifort: Command line warning: overriding '/Qvc7.1' with '/Qvc8' 1>Linking... 1>AIEM_final.obj : error LNK2019: riferimento al simbolo esterno _D_ERFC non risolto nella funzione _B6 1>Debug/AIEM - single scattering - final.exe : fatal error LNK1120: 1 esterni non risolti 1> 1>Build log written to "file://C:\Documents and Settings\Decsar \Documenti\Fortran\AIEM - single scattering - final\Debug \BuildLog.htm" 1>AIEM - single scattering - final build failed. 1> ========== Generazione: 0 completate, 1 non riuscite, 0 aggiornate, 0 ignorate ========== The function with the problem is DOUBLE PRECISION function Shadowing_single(a) USE costanti_AIEM, ONLY : pi, k1, sds, theta_s, theta_i, L !USE IMSL_LIBRARIES USE ERFC_INT implicit none DOUBLE PRECISION :: a, lambda_S, lambda_I, sds1 sds1=dsqrt(2d0*(sds/L)**2d0) lambda_S=0.5d0 * (dsqrt(2d0/pi) * sds1 * dtan(theta_s) * dexp(-1d0/ (2d0*(sds1**2d0)*(dtan(theta_s))**2d0) ) )& -(erfc(1d0/(dsqrt(2d0)*sds1*dtan(theta_s)))) lambda_I=0.5d0 * (dsqrt(2d0/pi) * sds1 * dtan(theta_i) * dexp(-1d0/ (2d0*sds1**2d0*(dtan(theta_i))**2d0) ) )& -(erfc(1d0/(dsqrt(2d0)*sds1*dtan(theta_i)))) Shadowing_single = 1d0/( lambda_S+lambda_I+1d0 ) return end function Sometimes I receive this kind of message even when I switch from single to double precision. I'm a newby and I don't know if this is a stupid problem or not. Does someone knows the solution? Marco
From: mecej4 on 31 Aug 2007 13:01 marcomarco76(a)gmail.com wrote: > Hi everybody, > I'm using IVF 9.1 with MSVS 2005 and I'm experiencing a strange > problem. I've got a program composed by several subroutines (each in a > different file) and it works very well. Now I'm trying to merge all > the code in a single file and I receive this message There is nothing "strange" here; just an everyday undefined external. > 1>------ Inizio generazione: Progetto: AIEM - single scattering - > final, Configurazione: Debug Win32 ------ > 1>Compiling with Intel Fortran 9.1 C:\Programmi\Intel\Compiler\Fortran > \9.1\IA32\... > 1>AIEM_final.F90 > 1>ifort: Command line warning: overriding '/Qvc7.1' with '/Qvc8' > 1>Linking... > 1>AIEM_final.obj : error LNK2019: riferimento al simbolo esterno > _D_ERFC non risolto nella funzione _B6 Look for a function call to D_ERFC within your function B6. > 1>Debug/AIEM - single scattering - final.exe : fatal error LNK1120: 1 > esterni non risolti > 1> <<-- CUT -->> > Does someone knows the solution? > > Marco > -mecej4
From: marcomarco76 on 31 Aug 2007 13:48 Thanks for reply, the "guilty" function is erfc which belong to the IMSL library. It should be enough write "USE ERFC_INT" (at least this say the example in the IMSL fortran user's guide). Maybe the problem is in the project settings? I mean: the project (or something else) isn't properly configured to use the imsl library? If so I don't know what to do. Marco
From: jwm on 31 Aug 2007 15:28 On Aug 31, 11:48 am, marcomarc...(a)gmail.com wrote: > Thanks for reply, > the "guilty" function is erfc which belong to the IMSL library. It > should be enough write "USE ERFC_INT" (at least this say the example > in the IMSL fortran user's guide). Maybe the problem is in the project > settings? I mean: the project (or something else) isn't properly > configured to use the imsl library? If so I don't know what to do. The error comes from the linker, not the compiler. USE ERFC_INT is OK for the compiler, but the linker requires the path and name of the libraries to be used. Check the menu "Tools>Options>Intel(R) Fortran" to see if the VNI entries are set correctly for executables ($(VNI_DIR)\bin\$ (LIB_ARCH)), libraries ($(VNI_DIR)\lib\$(LIB_ARCH)) and include files ($(VNI_DIR)\include\$(LIB_ARCH)); ---where VNI_DIR is the path of your Visual Numerics installation and LIB_ARCH is the target architecture (IA32, IA64, etc.). Alternatively, you can set the libraries and include paths in the settings for your project; set them in the Additional include (or library) directories in the Fortran>General (or Linker>General) property pages. There should be some C/C++ header files in the include folder of your VNI installation (something like link_????.h). Pick the one you want to use (static or dll, etc.) and add an include line below the "USE ERFC_INT"; it might be something like USE ERFC_INT include "link_f90_static.h" Or, alternatively, the names of the libraries included in the link_????.h file can go in the "Linker>Input>Additional dependencies" section of the property pages for the project. I hope that helps.
From: Steve Lionel on 31 Aug 2007 16:15
On Aug 31, 1:48 pm, marcomarc...(a)gmail.com wrote: > Thanks for reply, > the "guilty" function is erfc which belong to the IMSL library. It > should be enough write "USE ERFC_INT" (at least this say the example > in the IMSL fortran user's guide). Maybe the problem is in the project > settings? I mean: the project (or something else) isn't properly > configured to use the imsl library? If so I don't know what to do. Please read the section of the on-disk documentation regarding using IMSL from the Visual Studio environment. You can find it under Building Applications > Using Libraries > Using the IMSL Libraries. Generally, you need to add the path to the IMSL libraries under Tools > Options > Intel Fortran > Library Files and add an INCLUDE of the appropriate link_f90_xxx.h file in your source. (For version 10, this changes to link_fnl_xxx.h.) If you need further help, please contact Intel Premier Support. Steve Lionel Developer Products Division Intel Corporation |