conan-io/conan

[question] Cross-compilation with SCons and tool_requires

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#11,945 opened on Aug 23, 2022

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 (5 comments) (0 reactions) (1 assignee)Python (7,457 stars) (961 forks)batch import
Feedback please!complex: mediumcomponent: Buildhelp wantedtype: feature

Description

I am trying to setup cross-compilation with SCons where Conan provides the cross-compiler as a binary package. So, I have created a cross-compiler package which works fine with CMAKE when I add it as tool_requires and set the correct host profile.

For SCons however I am not sure how I can add the location of the cross-compiler binaries to the build environment. The SConscript_conan file does not contain anything regarding the packages installed via tool_requires. I would expect that they show up, so that I can add the BINPATH to the SCons environment. I can't add the pakckage as normal requires because then the build and host environments don't match anymore.

Does anyone have a suggestion what the recommend approach is for cross-compilation with SCons?

Contributor guide

Tech stack
pythoncpp
Domain
build systemtooling
Issue type
feature
DifficultyEstimated implementation difficulty for a new contributor, from 1 for very small changes to 5 for expert-level work.
4
Estimated timeA rough time range for an experienced contributor to investigate, implement, test, and prepare a pull request.
1-2 days
Activity statusHow available the issue appears right now: fresh, active, stale, blocked, or waiting on maintainer input.
stale
ClarityHow clearly the issue explains the expected change, acceptance criteria, and next step.
mostly clear
Prerequisites
Conan package managerSCons build systemcross compilation concepts
Newbie friendlinessA 1-100 score estimating how approachable this issue is for first-time contributors.
25
Research direction
Investigate how Conan's SCons generator currently handles tool requires. The issue suggests that binaries from tool requires are not exposed to the SCons environment. Look at the SCons generator source code in Conan (likely conan/tools/scm or similar) to understand how dependencies are added. Consider adding an option to include tool requires paths, or document a workaround using environment variables in the SCons script. Engage with the assignee (@mention) to clarify the expected behavior and potential implementation.
[question] Cross-compilation with SCons and tool_requires · conan-io/conan#11945 | Good First Issue