# Fpm with dislin
**URL:** https://fortran-lang.discourse.group/t/fpm-with-dislin/6700
**Category:** fpm
**Created:** [October 27, 2023, 4:38pm UTC](https://fortran-lang.discourse.group/t/fpm-with-dislin/6700 "2023-10-27T16:38:33Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@Shahid](https://fortran-lang.discourse.group/u/Shahid)
#### Post date: [October 27, 2023, 4:38pm UTC](https://fortran-lang.discourse.group/t/fpm-with-dislin/6700/1 "2023-10-27T16:38:33Z")
I wanna use the dislin graphical library in my fpm project for Windows 10. Usually, I compile with the command
```auto
gfortran main.f90 -Ic:\dislin\gf\real64 c:\dislin\dismg_d.a -luser32 -lgdi32 -lopengl32
```
I find some information under **Link external libraries**
> **[Manifest reference — Fortran Package Manager](https://fpm.fortran-lang.org/spec/manifest.html#include-directory)**
But I still could not figure out how to use it.
## Use system-installed modules
says
_fpm_ cannot automatically locate external module files; it is the responsibility of the user to specify the necessary include directories using compiler flags such that the compiler can locate external module files during compilation.
putting it there gives:
my manifest looks like
---
### Author:  [@gnikit](https://fortran-lang.discourse.group/u/gnikit)
#### Post date: [October 27, 2023, 5:30pm UTC](https://fortran-lang.discourse.group/t/fpm-with-dislin/6700/2 "2023-10-27T17:30:10Z")
Your `fpm.toml` should probably look a bit closer to this
```toml
[build]
...
link = ["user32", "gdi32", "opengl32"]
# If you are USEing and external modules in your code place them below
external-modules = ["netcdf", "h5lt"]
...
```
Including the correct paths should probably be done via the `--flag` option, the fpm environmental variables or a response file.
Relevant Docs sections:
- [external lib linking](https://fpm.fortran-lang.org/spec/manifest.html#link-external-libraries)
- [external modules](https://fpm.fortran-lang.org/spec/manifest.html#use-system-installed-modules)
---
### Author:  [@Shahid](https://fortran-lang.discourse.group/u/Shahid)
#### Post date: [October 27, 2023, 5:56pm UTC](https://fortran-lang.discourse.group/t/fpm-with-dislin/6700/3 "2023-10-27T17:56:47Z")
I updated the manifest now:
```auto
[build]
auto-executables = true
auto-tests = true
auto-examples = true
external-modules = ["dislin"]
link = ["user32" , "gdi32", "opengl32"]
```
and fpm run is showing pretty much the same output
```auto
$ fpm run --Ic:\dislin\gf\real64 c:\dislin\dismg_d.a
UNKNOWN LONG KEYWORD: --Ic:dislingfreal64
KEYWORD SHORT PRESENT VALUE
version v F [F]
verbose V F [F]
usage u F [F]
target F [" "]
runner F [" "]
profile F [" "]
no-prune F [F]
list F [F]
link-flag F [" "]
help h F [F]
flag F [" "]
example F [F]
directory C F [" "]
cxx-flag F [" "]
cxx-compiler F [" "]
compiler F ["gfortran"]
c-flag F [" "]
c-compiler F [" "]
archiver F [" "]
all F [F]
UNNAMED
000001[run]
```
My code is
```auto
program main_fpm
use Dislin ! Dislin module
implicit none
integer (4), parameter :: x=4, y=4
real(8), dimension(x,y) :: r
call random_number (r)
call qplclr (r,x,y) ! dislin quickplot routine
end program main_fpm
```
---
### Author:  [@gnikit](https://fortran-lang.discourse.group/u/gnikit)
#### Post date: [October 27, 2023, 6:21pm UTC](https://fortran-lang.discourse.group/t/fpm-with-dislin/6700/4 "2023-10-27T18:21:23Z")
Try running it like
```sh
fpm run --flag "-Ic:\dislin\gf\real64"
```
```auto
fpm run -h
```
Contains some good info on how to pass these flags to the compiler. Let us know if you think something can be improved.
---
### Author:  [@Shahid](https://fortran-lang.discourse.group/u/Shahid)
#### Post date: [October 27, 2023, 6:45pm UTC](https://fortran-lang.discourse.group/t/fpm-with-dislin/6700/5 "2023-10-27T18:45:33Z")
I still get the error:
```auto
$ fpm run --flag "-Ic:\dislin\gf\real64"
first_steps.exe failed.
[100%] Compiling...
C:/msys64/mingw64/bin/../lib/gcc/x86_64-w64-mingw32/12.2.0/../../../../x86_64-w64-mingw32/bin/ld.exe
: build\gfortran_B5883862FD3CD98A\first_steps\app_main.f90.o:main.f90:(.text+0x98): undefined refere
nce to `qplclr_'
collect2.exe: error: ld returned 1 exit status
Compilation failed for object " first_steps.exe "
stopping due to failed compilation
STOP 1
```
Where to put this
```auto
c:\dislin\dismg_d.a
```
which is used in the cmd.
```auto
gfortran main.f90 -Ic:\dislin\gf\real64 c:\dislin\dismg_d.a -luser32 -lgdi32 -lopengl32
```
The first part seems to be adjusted with the `--flag` option. The last part was put in the link in `.toml` file.
As to the command
`fpm run -h`
it shows a lot of information and i am into it now. Surely will give feedback!