Compilation fail as meta-package.

[MilanSkocic]

Description

By default STDLIB_BITSET is defined to 1 in include/macros.in implying that the stdlib_bitset is used.
However, the compilation fails:

build/dependencies/stdlib/src/stdlib_math.F90:6:9:

    6 |     use stdlib_bitsets, only: bitset_64, bitset_large
      |         1
Fatal Error: Cannot open module file ‘stdlib_bitsets.mod’ for reading at (1): No such file or directory
compilation terminated.
<ERROR> Compilation failed for object " build_dependencies_stdlib_src_stdlib_math.F90.o "
<ERROR> stopping due to failed compilation
STOP 1

The issue is located in lines 8-10 in stdlib_math.F90

#if STDLIB_BITSET == 1
    use stdlib_bitsets, only: bitset_64, bitset_large
#endif

stdlib_bitsets.f90 is in the src folder and it looks like it was not compiled before stdlib_math.F90.

Expected Behaviour

stdlib_bitsets.f90 gets compiled before stdlib_math.f90 and no compilation failure when STDLIB_BITSET is defined to 1.

Version of stdlib

72ad5fb

Platform and Architecture

Linux (Debian 13)

Additional Information

WORKAROUND: Add in fpm.toml

[preprocess]
[preprocess.cpp]
suffixes = [".F90", ".f90"]
macros = ["MAXRANK=7", "STDLIB_NO_BITSET"]

[jvdp1]

Thank you @MilanSkocic for reporting the bug. The default should be that the whole stdlib is compiled.
Can you provide the commands such that I can try to generate the issue on my side, please?

[MilanSkocic]

I simply defined stdlib as a dependence.

[dependencies]
stdlib = "*"

I ran fpm build --profile release.

I did this in my repo (https://github.com/MilanSkocic/ecx) where the stdlib_math module is used for linspace and logspace.

[MilanSkocic]

It fails too when testing with a new package created with fpm. As soon as you add stdlib as a dependency and use stdlib_math.

You won't have difficulties to reproduce the issue.

[MilanSkocic]

It seems that this issue is also present in the testing workflow of fpm PR12016.

Link to the error message:
https://github.com/fortran-lang/fpm/actions/runs/19393615282/job/57320618001?pr=1206

[jvdp1]

It fails too when testing with a new package created with fpm. As soon as you add stdlib as a dependency and use stdlib_math.

You won't have difficulties to reproduce the issue.

I couldn't reproduce it. Below is what I did. What did I missed?

I try to reproduce the issue by:

• generate a new fpm project (fpm new bugbitset)
• modify the file app/main.f90 as follows:

program main
  use bugbitset, only: say_hello
  use stdlib_math, only: linspace
  implicit none

  call say_hello()
  print*,'aaaa ',linspace(1., 2., 5)

end program main

• add the dependency stdlib in fpm.toml:

name = "bugbitset"
version = "0.1.0"
license = "license"
author = "Jeremie Vandenplas"
maintainer = "jeremie.vandenplas@gmail.com"
copyright = "Copyright 2025, Jeremie Vandenplas"
[build]
auto-executables = true
auto-tests = true
auto-examples = true
module-naming = false
[install]
library = false
test = false
[fortran]
implicit-typing = false
implicit-external = false
source-form = "free"

[dependencies]
stdlib="*"

and everything compiled fine.

 fpm build --profile=release
 + mkdir -p build/dependencies
astuce: Utilisation de 'master' comme nom de la branche initiale. Le nom de la branche
astuce: par défaut peut changer. Pour configurer le nom de la branche initiale
astuce: pour tous les nouveaux dépôts, et supprimer cet avertissement, lancez :
astuce: 
astuce: 	git config --global init.defaultBranch <nom>
astuce: 
astuce: Les noms les plus utilisés à la place de 'master' sont 'main', 'trunk' et
astuce: 'development'. La branche nouvellement créée peut être rénommée avec :
astuce: 
astuce: 	git branch -m <nom>
Dépôt Git vide initialisé dans /home/jvandenp/bugbitset/build/dependencies/test-drive/.git/
remote: Enumerating objects: 31, done.
remote: Counting objects: 100% (31/31), done.
remote: Compressing objects: 100% (29/29), done.
remote: Total 31 (delta 5), reused 8 (delta 0), pack-reused 0 (from 0)
Dépaquetage des objets: 100% (31/31), 31.43 Kio | 784.00 Kio/s, fait.
Depuis https://github.com/fortran-lang/test-drive
 * tag               v0.4.0     -> FETCH_HEAD
astuce: Utilisation de 'master' comme nom de la branche initiale. Le nom de la branche
astuce: par défaut peut changer. Pour configurer le nom de la branche initiale
astuce: pour tous les nouveaux dépôts, et supprimer cet avertissement, lancez :
astuce: 
astuce: 	git config --global init.defaultBranch <nom>
astuce: 
astuce: Les noms les plus utilisés à la place de 'master' sont 'main', 'trunk' et
astuce: 'development'. La branche nouvellement créée peut être rénommée avec :
astuce: 
astuce: 	git branch -m <nom>
Dépôt Git vide initialisé dans /home/jvandenp/bugbitset/build/dependencies/stdlib/.git/
remote: Enumerating objects: 610, done.
remote: Counting objects: 100% (610/610), done.
remote: Compressing objects: 100% (487/487), done.
remote: Total 610 (delta 132), reused 435 (delta 121), pack-reused 0 (from 0)
Réception d'objets: 100% (610/610), 1.96 Mio | 8.79 Mio/s, fait.
Résolution des deltas: 100% (132/132), fait.
Depuis https://github.com/fortran-lang/stdlib
 * branch            stdlib-fpm -> FETCH_HEAD
bugbitset.f90                          done.
stdlib_system.c                        done.
stdlib_kinds.f90                       done.
stdlib_system_subprocess.c             done.
stdlib_ascii.f90                       done.
stdlib_optval.f90                      done.
stdlib_string_type.f90                 done.
stdlib_error.f90                       done.
stdlib_bitsets.f90                     done.
stdlib_bitsets_64.f90                  done.
stdlib_strings.f90                     done.
f08estop.f90                           done.
stdlib_math.F90                        done.
stdlib_bitsets_large.f90               done.
main.f90                               done.
stdlib_strings_to_string.f90           done.
stdlib_math_is_close.f90               done.
stdlib_math_arange.f90                 done.
stdlib_math_diff.f90                   done.
stdlib_math_all_close.f90              done.
stdlib_string_type_constructor.f90     done.
stdlib_math_meshgrid.f90               done.
stdlib_math_logspace.f90               done.
stdlib_math_linspace.f90               done.
libbugbitset.a                         done.
bugbitset                              done.
[100%] Project compiled successfully.
(venv) jvandenp@jvthink:~/bugbitset$ 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:     Linux

[jvdp1]

I simply defined stdlib as a dependence.

[dependencies]
stdlib = "*"

I ran fpm build --profile release.

I did this in my repo (https://github.com/MilanSkocic/ecx) where the stdlib_math module is used for linspace and logspace.

I just cloned your repo, and run fpm build succesfully.

[MilanSkocic]

I see that you ran the test with fpm 0.11. I ran with fpm 0.12.

Can you test with fpm 0.12?

[MilanSkocic]

Actually I'm running the very last fpm from GitHub. I might have to revert to 0.12 and do the testing.

[jvdp1]

Can you test with fpm 0.12?

I did, and it was ok. @perazz : any idea what could be the problem (either in stdlib or in fpm)?

~/bugbitset$ ./fpm-0.12.0-linux-x86_64-gcc-12 build --profile=release
 + mkdir -p build/dependencies
astuce: Utilisation de 'master' comme nom de la branche initiale. Le nom de la branche
astuce: par défaut peut changer. Pour configurer le nom de la branche initiale
astuce: pour tous les nouveaux dépôts, et supprimer cet avertissement, lancez :
astuce: 
astuce: 	git config --global init.defaultBranch <nom>
astuce: 
astuce: Les noms les plus utilisés à la place de 'master' sont 'main', 'trunk' et
astuce: 'development'. La branche nouvellement créée peut être rénommée avec :
astuce: 
astuce: 	git branch -m <nom>
Dépôt Git vide initialisé dans /home/jvandenp/bugbitset/build/dependencies/test-drive/.git/
remote: Enumerating objects: 31, done.
remote: Counting objects: 100% (31/31), done.
remote: Compressing objects: 100% (29/29), done.
remote: Total 31 (delta 5), reused 8 (delta 0), pack-reused 0 (from 0)
Dépaquetage des objets: 100% (31/31), 31.43 Kio | 1.43 Mio/s, fait.
Depuis https://github.com/fortran-lang/test-drive
 * tag               v0.4.0     -> FETCH_HEAD
astuce: Utilisation de 'master' comme nom de la branche initiale. Le nom de la branche
astuce: par défaut peut changer. Pour configurer le nom de la branche initiale
astuce: pour tous les nouveaux dépôts, et supprimer cet avertissement, lancez :
astuce: 
astuce: 	git config --global init.defaultBranch <nom>
astuce: 
astuce: Les noms les plus utilisés à la place de 'master' sont 'main', 'trunk' et
astuce: 'development'. La branche nouvellement créée peut être rénommée avec :
astuce: 
astuce: 	git branch -m <nom>
Dépôt Git vide initialisé dans /home/jvandenp/bugbitset/build/dependencies/stdlib/.git/
remote: Enumerating objects: 610, done.
remote: Counting objects: 100% (610/610), done.
remote: Compressing objects: 100% (487/487), done.
remote: Total 610 (delta 132), reused 435 (delta 121), pack-reused 0 (from 0)
Réception d'objets: 100% (610/610), 1.96 Mio | 4.36 Mio/s, fait.
Résolution des deltas: 100% (132/132), fait.
Depuis https://github.com/fortran-lang/stdlib
 * branch            stdlib-fpm -> FETCH_HEAD
bugbitset.f90                          done.
stdlib_system.c                        done.
stdlib_kinds.f90                       done.
stdlib_system_subprocess.c             done.
stdlib_ascii.f90                       done.
stdlib_optval.f90                      done.
stdlib_string_type.f90                 done.
stdlib_error.f90                       done.
stdlib_bitsets.f90                     done.
stdlib_bitsets_64.f90                  done.
stdlib_strings.f90                     done.
f08estop.f90                           done.
stdlib_math.F90                        done.
stdlib_bitsets_large.f90               done.
main.f90                               done.
stdlib_strings_to_string.f90           done.
stdlib_math_is_close.f90               done.
stdlib_math_arange.f90                 done.
stdlib_math_diff.f90                   done.
stdlib_math_all_close.f90              done.
stdlib_string_type_constructor.f90     done.
stdlib_math_meshgrid.f90               done.
stdlib_math_logspace.f90               done.
stdlib_math_linspace.f90               done.
libbugbitset.a                         done.
bugbitset                              done.
[100%] Project compiled successfully.

[MilanSkocic]

It fails too when testing with a new package created with fpm. As soon as you add stdlib as a dependency and use stdlib_math.
You won't have difficulties to reproduce the issue.

I couldn't reproduce it. Below is what I did. What did I missed?

I try to reproduce the issue by:

• generate a new fpm project (fpm new bugbitset)
• modify the file app/main.f90 as follows:

program main
use bugbitset, only: say_hello
use stdlib_math, only: linspace
implicit none

call say_hello()
print*,'aaaa ',linspace(1., 2., 5)

end program main

• add the dependency stdlib in fpm.toml:

name = "bugbitset"
version = "0.1.0"
license = "license"
author = "Jeremie Vandenplas"
maintainer = "jeremie.vandenplas@gmail.com"
copyright = "Copyright 2025, Jeremie Vandenplas"
[build]
auto-executables = true
auto-tests = true
auto-examples = true
module-naming = false
[install]
library = false
test = false
[fortran]
implicit-typing = false
implicit-external = false
source-form = "free"

[dependencies]
stdlib="*"
and everything compiled fine.

fpm build --profile=release

• mkdir -p build/dependencies
  astuce: Utilisation de 'master' comme nom de la branche initiale. Le nom de la branche
  astuce: par défaut peut changer. Pour configurer le nom de la branche initiale
  astuce: pour tous les nouveaux dépôts, et supprimer cet avertissement, lancez :
  astuce:
  astuce: git config --global init.defaultBranch
  astuce:
  astuce: Les noms les plus utilisés à la place de 'master' sont 'main', 'trunk' et
  astuce: 'development'. La branche nouvellement créée peut être rénommée avec :
  astuce:
  astuce: git branch -m
  Dépôt Git vide initialisé dans /home/jvandenp/bugbitset/build/dependencies/test-drive/.git/
  remote: Enumerating objects: 31, done.
  remote: Counting objects: 100% (31/31), done.
  remote: Compressing objects: 100% (29/29), done.
  remote: Total 31 (delta 5), reused 8 (delta 0), pack-reused 0 (from 0)
  Dépaquetage des objets: 100% (31/31), 31.43 Kio | 784.00 Kio/s, fait.
  Depuis https://github.com/fortran-lang/test-drive

• tag v0.4.0 -> FETCH_HEAD
  astuce: Utilisation de 'master' comme nom de la branche initiale. Le nom de la branche
  astuce: par défaut peut changer. Pour configurer le nom de la branche initiale
  astuce: pour tous les nouveaux dépôts, et supprimer cet avertissement, lancez :
  astuce:
  astuce: git config --global init.defaultBranch
  astuce:
  astuce: Les noms les plus utilisés à la place de 'master' sont 'main', 'trunk' et
  astuce: 'development'. La branche nouvellement créée peut être rénommée avec :
  astuce:
  astuce: git branch -m
  Dépôt Git vide initialisé dans /home/jvandenp/bugbitset/build/dependencies/stdlib/.git/
  remote: Enumerating objects: 610, done.
  remote: Counting objects: 100% (610/610), done.
  remote: Compressing objects: 100% (487/487), done.
  remote: Total 610 (delta 132), reused 435 (delta 121), pack-reused 0 (from 0)
  Réception d'objets: 100% (610/610), 1.96 Mio | 8.79 Mio/s, fait.
  Résolution des deltas: 100% (132/132), fait.
  Depuis https://github.com/fortran-lang/stdlib
• branch stdlib-fpm -> FETCH_HEAD
  bugbitset.f90 done.
  stdlib_system.c done.
  stdlib_kinds.f90 done.
  stdlib_system_subprocess.c done.
  stdlib_ascii.f90 done.
  stdlib_optval.f90 done.
  stdlib_string_type.f90 done.
  stdlib_error.f90 done.
  stdlib_bitsets.f90 done.
  stdlib_bitsets_64.f90 done.
  stdlib_strings.f90 done.
  f08estop.f90 done.
  stdlib_math.F90 done.
  stdlib_bitsets_large.f90 done.
  main.f90 done.
  stdlib_strings_to_string.f90 done.
  stdlib_math_is_close.f90 done.
  stdlib_math_arange.f90 done.
  stdlib_math_diff.f90 done.
  stdlib_math_all_close.f90 done.
  stdlib_string_type_constructor.f90 done.
  stdlib_math_meshgrid.f90 done.
  stdlib_math_logspace.f90 done.
  stdlib_math_linspace.f90 done.
  libbugbitset.a done.
  bugbitset done.
  [100%] Project compiled successfully.
  (venv) jvandenp@jvthink:~/bugbitset$ 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: Linux

I'll revert to fpm 0.11 or 0.12 and do the test. Something might be wrong with the very last fpm which I'm currrently using.

[MilanSkocic]

@jvdp1 @perazz I did the test with fpm 0.12 and it built successfully.

The issue is not related to the release 0.12. It might be related to newer code introduced after or to my to my modifications in PR1206.

Sorry guys for bothering you.

I'm closing this issue.

[perazz]

Another (possibly stronger/more elegant?) fix for this would be if the stdlib deployment script edited fpm.toml of the stdlib-fpm branches by adding

[preprocess]
cpp.macros = ["blabla"]

that would avoid relying on the include file, although this information then would have to be kept in sync.

[jvdp1]

Good point @perazz ! I will open a PR.