# Fpm link issue in conda environment **URL:** \ **Category:** fpm\ **Created:** [March 26, 2025, 3:06pm UTC](https://fortran-lang.discourse.group/t/fpm-link-issue-in-conda-environment/9491 "2025-03-26T15:06:19Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![icpup](https://avatars.discourse-cdn.com/v4/letter/i/e79b87/32.png) [@icpup](https://fortran-lang.discourse.group/u/icpup)\ **Post date:** [March 26, 2025, 3:06pm UTC](https://fortran-lang.discourse.group/t/fpm-link-issue-in-conda-environment/9491/1 "2025-03-26T15:06:19Z")
I have a program need to link external library and module, so in fpm.toml I have: [build] link = “mylib” external-modules = “mymodule” and FPM\_LDFLAGS environment variable is defined as absolute path using options “-I” and “-L”. This does work in a regular plain system using self-installed fpm package. However, once in a conda environment using conda’s fpm package, fpm gives error mymodule can’t be found. The fpm.toml and FPM\_LDFLAGS variable are still the same as before. Anyone has any idea? Am I missing something? ---
**Author:** ![FedericoPerini](https://yyz2.discourse-cdn.com/free1/user_avatar/fortran-lang.discourse.group/federicoperini/32/1750_2.png) [@FedericoPerini](https://fortran-lang.discourse.group/u/FedericoPerini)\ **Post date:** [March 26, 2025, 4:06pm UTC](https://fortran-lang.discourse.group/t/fpm-link-issue-in-conda-environment/9491/2 "2025-03-26T16:06:21Z")
what version of `fpm` is available in `conda`? you can check it by running ```auto federico@MacBookPro amr % fpm --version Version: 0.11.0, alpha Program: fpm(1) Description: A Fortran package manager and build system Home Page: https://github.com/fortran-lang/fpm License: MIT OS Type: macOS ``` ---
**Author:** ![icpup](https://avatars.discourse-cdn.com/v4/letter/i/e79b87/32.png) [@icpup](https://fortran-lang.discourse.group/u/icpup)\ **Post date:** [March 26, 2025, 5:43pm UTC](https://fortran-lang.discourse.group/t/fpm-link-issue-in-conda-environment/9491/3 "2025-03-26T17:43:40Z")
Version: 0.10.1, alpha Program: fpm(1) Description: A Fortran package manager and build system Home Page: [GitHub - fortran-lang/fpm: Fortran Package Manager (fpm)](https://github.com/fortran-lang/fpm) License: MIT OS Type: Linux ---
**Author:** ![FedericoPerini](https://yyz2.discourse-cdn.com/free1/user_avatar/fortran-lang.discourse.group/federicoperini/32/1750_2.png) [@FedericoPerini](https://fortran-lang.discourse.group/u/FedericoPerini)\ **Post date:** [March 27, 2025, 7:17am UTC](https://fortran-lang.discourse.group/t/fpm-link-issue-in-conda-environment/9491/4 "2025-03-27T07:17:50Z")
what happens if you pass those flags via the `fpm` CLI interface instead? I am no Conda user, but is it possible that it creates a new environment, so the `FPM_LDFLAGS` need be set again after the conda environment is initiated? Another option would be to please share the output of `fpm --verbose`, that should give us more information. ---
**Author:** ![icpup](https://avatars.discourse-cdn.com/v4/letter/i/e79b87/32.png) [@icpup](https://fortran-lang.discourse.group/u/icpup)\ **Post date:** [March 27, 2025, 1:42pm UTC](https://fortran-lang.discourse.group/t/fpm-link-issue-in-conda-environment/9491/5 "2025-03-27T13:42:25Z")
It is the same if passing flags on fpm CLI. My fpm.toml file build section is listed below: ```auto [build] auto-executables = false auto-tests = false auto-examples = false link = "mylib" external-modules = "mymodule" [dependencies] stdlib = "*" [[test]] name = "test_add" main = "test_add.f90" ``` The libmylib.a and mymodule.mod is in _/home/jing/mylib/build_ directory. I have updated my system wide installed fpm version to 0.11.0, now I have the same problem as in conda environment which has the latest version of 0.10.1 Here is the output: ```auto (fortran) [jing@Lenovo myproject]$ fpm --verbose test --link-flag "-I$HOME/mylib/build/ -L$HOME/mylib/build/" BUILD_NAME: build/gfortran COMPILER: gfortran C COMPILER: gcc CXX COMPILER: g++ COMPILER OPTIONS: -cpp -Wall -Wextra -fPIC -fmax-errors=1 -g -fcheck=bounds -fcheck=array-temps -fbacktrace -fcoarray=single C COMPILER OPTIONS: CXX COMPILER OPTIONS: LINKER OPTIONS: -I/home/jing/mylib/build/ -L/home/jing/mylib/build/ INCLUDE DIRECTORIES: [] + mkdir -p build/gfortran_7BA72E36968DE660 [0%] test_add.f90 + gfortran -c test/test_add.f90 -cpp -Wall -Wextra -fPIC -fmax-errors=1 -g -fcheck=bounds -fcheck=array-temps -fbacktrace -fcoarray=single -fimplicit-none -Werror=implicit-interface -ffree-form -J build/gfortran_6E2E351FB09955DB -Ibuild/gfortran_6E2E351FB09955DB -Ibuild/gfortran_1D6428BD3EB87848 -o build/gfortran_6E2E351FB09955DB/myproject/test_test_add.f90.o test/test_add.f90:6:9: 6 | use mymodule | 1 Fatal Error: Cannot open module file 'mymodule.mod' for reading at (1): No such file or directory compilation terminated. [50%] test_add.f90 done. test/test_add.f90:6:9: 6 | use mymodule | 1 Fatal Error: Cannot open module file 'mymodule.mod' for reading at (1): No such file or directory compilation terminated. Compilation failed for object " test_test_add.f90.o " stopping due to failed compilation STOP 1 ``` ---
**Author:** ![FedericoPerini](https://yyz2.discourse-cdn.com/free1/user_avatar/fortran-lang.discourse.group/federicoperini/32/1750_2.png) [@FedericoPerini](https://fortran-lang.discourse.group/u/FedericoPerini)\ **Post date:** [March 27, 2025, 5:27pm UTC](https://fortran-lang.discourse.group/t/fpm-link-issue-in-conda-environment/9491/6 "2025-03-27T17:27:07Z")
@icpup, from what you are showing, I believe the `-I/home/jing/mylib/build/` should be a build flag rather than a link flag, and it may be the reason why the compiler can’t find the module files. ---
**Author:** ![icpup](https://avatars.discourse-cdn.com/v4/letter/i/e79b87/32.png) [@icpup](https://fortran-lang.discourse.group/u/icpup)\ **Post date:** [March 28, 2025, 2:57am UTC](https://fortran-lang.discourse.group/t/fpm-link-issue-in-conda-environment/9491/7 "2025-03-28T02:57:42Z")
@FedericoPerini, you are right! I changed option “-I” to compiler flag, problem was solved. Thank you.