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spack compiler info: show non-external compilers too#51718

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alalazo merged 3 commits intospack:developfrom
alalazo:commands/spack-compiler-info
Dec 9, 2025
Merged

spack compiler info: show non-external compilers too#51718
alalazo merged 3 commits intospack:developfrom
alalazo:commands/spack-compiler-info

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@alalazo alalazo commented Dec 9, 2025

fixes #51681

After this change, spack compiler info will start showing installed compilers and, on demand, compilers from buildcaches.

Before

$ spack compiler list
==> Available compilers
-- gcc ubuntu20.04-x86_64 ---------------------------------------
[e]  [email protected]  [e]  [email protected]  [e]  [email protected]  [+]  [email protected]

-- llvm ubuntu20.04-x86_64 --------------------------------------
[e]  [email protected]  [e]  [email protected]  [e]  [email protected]

$ spack compiler info gcc@10:
gcc@=10.5.0~binutils+bootstrap~graphite~nvptx~piclibs~profiled~strip build_system=autotools build_type=RelWithDebInfo languages:='c,c++,fortran' platform=linux os=ubuntu20.04 target=x86_64:
  prefix: /usr
  compilers:
    c: /usr/bin/gcc-10
    cxx: /usr/bin/g++-10
    fortran: /usr/bin/gfortran-10

After

$ spack compiler list
==> Available compilers
-- gcc ubuntu20.04-x86_64 ---------------------------------------
[e]  [email protected]  [e]  [email protected]  [e]  [email protected]  [+]  [email protected]

-- llvm ubuntu20.04-x86_64 --------------------------------------
[e]  [email protected]  [e]  [email protected]  [e]  [email protected]

$ spack compiler info gcc@10:
[e]  gcc@=10.5.0~binutils+bootstrap~graphite~nvptx~piclibs~profiled~strip build_system=autotools build_type=RelWithDebInfo languages:='c,c++,fortran' platform=linux os=ubuntu20.04 target=x86_64

  prefix: /usr
  compilers:
    cc: /usr/bin/gcc-10
    cxx: /usr/bin/g++-10
    fortran: /usr/bin/gfortran-10

[+]  gcc@=15.2.0~binutils+bootstrap~graphite~mold~nvptx~piclibs~profiled~strip build_system=autotools build_type=RelWithDebInfo languages:='c,c++,fortran' platform=linux os=ubuntu20.04 target=icelake

  prefix: /home/culpo/.local/spack/opt/linux-icelake/gcc-15.2.0-hf5qmg2xdqgxhnfhlqpn7djhjrat6max
  compilers:
    cc: /home/culpo/.local/spack/opt/linux-icelake/gcc-15.2.0-hf5qmg2xdqgxhnfhlqpn7djhjrat6max/bin/gcc
    cxx: /home/culpo/.local/spack/opt/linux-icelake/gcc-15.2.0-hf5qmg2xdqgxhnfhlqpn7djhjrat6max/bin/g++
    fortran: /home/culpo/.local/spack/opt/linux-icelake/gcc-15.2.0-hf5qmg2xdqgxhnfhlqpn7djhjrat6max/bin/gfortran

@alalazo alalazo mentioned this pull request Dec 9, 2025
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@haampie haampie requested a review from Copilot December 9, 2025 10:14
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Pull request overview

This PR extends the spack compiler info command to display information about installed compilers and compilers from registered buildcaches (when using the --remote flag), not just external compilers. Previously, compiler info only showed external compilers from YAML configuration files.

Key changes:

  • Added --remote flag to spack compiler info command to enable querying compilers from buildcaches
  • Refactored common compiler querying logic into a shared _all_available_compilers() helper function
  • Updated compiler_info() to display compiler information from multiple sources including installed packages

Reviewed changes

Copilot reviewed 3 out of 3 changed files in this pull request and generated 1 comment.

File Description
lib/spack/spack/cmd/compiler.py Added --remote argument to info parser; refactored compiler querying logic into _all_available_compilers() helper function; updated compiler_info() to handle non-external compilers and display detailed information including compiler executables, flags, and environment settings
share/spack/spack-completion.bash Added --remote option to bash completion for compiler info command
share/spack/spack-completion.fish Added --remote option to fish shell completion for compiler info command

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@alalazo alalazo merged commit 15cdbdb into spack:develop Dec 9, 2025
30 of 31 checks passed
@alalazo alalazo deleted the commands/spack-compiler-info branch December 9, 2025 13:16
@alalazo alalazo added the v1.1.1 label Dec 9, 2025
becker33 pushed a commit that referenced this pull request Jan 10, 2026
@alalazo @becker33
spack compiler info: show non-external compilers too (#51718)
098e319 
Signed-off-by: Massimiliano Culpo <[email protected]>
@becker33 becker33 mentioned this pull request Jan 10, 2026
Merged
2 tasks
becker33 pushed a commit that referenced this pull request Jan 11, 2026
@alalazo @becker33
spack compiler info: show non-external compilers too (#51718)
cadc358 
Signed-off-by: Massimiliano Culpo <[email protected]>
Signed-off-by: Gregory Becker <[email protected]>
becker33 pushed a commit that referenced this pull request Jan 15, 2026
@alalazo @becker33
spack compiler info: show non-external compilers too (#51718)
e6d1a76 
Signed-off-by: Massimiliano Culpo <[email protected]>
Signed-off-by: Gregory Becker <[email protected]>
vjranagit pushed a commit to vjranagit/spack that referenced this pull request Jan 18, 2026
@alalazo @becker33
spack compiler info: show non-external compilers too (spack#51718)
1131e43 
Signed-off-by: Massimiliano Culpo <[email protected]>
Signed-off-by: Gregory Becker <[email protected]>
becker33 pushed a commit that referenced this pull request Jan 22, 2026
@alalazo @becker33
spack compiler info: show non-external compilers too (#51718)
b185e28 
Signed-off-by: Massimiliano Culpo <[email protected]>
Signed-off-by: Gregory Becker <[email protected]>
becker33 pushed a commit that referenced this pull request Jan 26, 2026
@alalazo @becker33
spack compiler info: show non-external compilers too (#51718)
5536d70 
Signed-off-by: Massimiliano Culpo <[email protected]>
Signed-off-by: Gregory Becker <[email protected]>
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spack compiler info doesn't show non-external compilers

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