Anyone with experience linking FFTW for C++

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Discussion Overview

The discussion centers around linking the FFTW library in a C++ project using Visual Studio on Windows. Participants are addressing linker errors encountered during the build process, specifically related to missing object files.

Discussion Character

  • Technical explanation
  • Debate/contested

Main Points Raised

  • One participant describes their attempt to link FFTW by configuring project properties in Visual Studio, including setting paths for the library and include directories.
  • The same participant reports a linker error indicating that the build process is looking for a .obj file that does not exist in the specified directory.
  • Another participant notes that linking commands differ between Windows and Unix environments, implying that the approach may need adjustment based on the operating system.

Areas of Agreement / Disagreement

Participants have not reached a consensus on the cause of the linker error, and multiple views on linking practices in different environments are presented.

Contextual Notes

The discussion does not clarify the specific command used for linking or the exact nature of the configurations made, which may be relevant for troubleshooting the issue.

cppIStough
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Title says it all, I'm trying to link FFTW and am getting a linker error. Anyone here have experience using this library?
 
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cppIStough said:
Title says it all,
All except the command you are using and the error message you get.
 
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Vanadium 50 said:
All except the command you are using and the error message you get.
hahaha okay, fair enough, i just wanted to know if anyone had used it. Okay, so I'm using windows on visual studio. I configure the solution i'm currently trying to link with to include the path to the FFTW3.lib file: in order to do this I'm clicking properties > Linker > Input and then adding this directory in Additional Dependencies.
I also have this directory added to the VC++ Directories > Include Directories and Library Directories.

Then when I #include <fftw3.h> I receive the error:
Build started...
1>------ Build started: Project: signal.lib, Configuration: Release x64 ------
1>signal.lib.cpp
1>LINK : fatal error LNK1181: cannot open input file 'C:\external_libs\fftw-3.3.10\Release.obj'
1>Done building project "signal.lib.vcxproj" -- FAILED.
========== Build: 0 succeeded, 1 failed, 0 up-to-date, 0 skipped ==========
========== Build started at 4:57 PM and took 01.500 seconds ==========

But I am not sure why it is looking for a .obj file. Any help? Below is a snippet of the directory I'm pointing to, and no .obj file there
1716066128400.png
 
I don't develop in Windows, but in unix, the command is different to link in foo.obj and foo.lib.
 

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