REF: v5.4.0 _1 Multi output + MSVC

[MementoRC]

Complete OCaml 5.4.0 feedstock with cross-compilation support:

Multi-output recipe structure (6 outputs):

• ocaml: Base native compiler with file pattern separation
• ocaml_linux-aarch64: Linux ARM64 cross-compiler
• ocaml_linux-ppc64le: Linux PPC64LE cross-compiler
• ocaml_osx-arm64: macOS ARM64 cross-compiler
• ocaml-compiler: Toolchain meta-package (ocaml + C compiler)
• (Proposed) ocaml-devel

Build infrastructure:

• 3-stage cross-compilation (native, cross-compiler, cross-target)
• Refactored build scripts for modularity
• conda-ocaml-* wrapper executables for toolchain flexibility
• Fixed CRC mismatch by treating NATIVE_STDLIB as read-only
• Pass CC/CFLAGS/LDFLAGS as env vars for proper cross-compilation

Testing:

• Comprehensive cross-compiler and toolchain tests
• Cross-architecture verification tests
• Optional target triplet argument for test-cross-compilers.sh

Fixes:

• Cross-compilation rpath issues
• ARM64 sysroot for MKEXE/MKDLL on osx-64
• Missing CHECKSTACK_CC variable definition
• Downstream package config compatibility

Checklist

• Used a personal fork of the feedstock to propose changes
• Bumped the build number (if the version is unchanged)
• Reset the build number to 0 (if the version changed)
• Re-rendered with the latest conda-smithy (Use the phrase @conda-forge-admin, please rerender in a comment in this PR for automated rerendering)
• Ensured the license file is being packaged.

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe/recipe.yaml) and found it was in an excellent condition.

[MementoRC]

@conda-forge-admin Please rerender

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I was trying to look for recipes to lint for you, but it appears we have a merge conflict. Please try to merge or rebase with the base branch to resolve this conflict.

Please ping the 'conda-forge/core' team (using the @ notation in a comment) if you believe this is a bug.

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe/recipe.yaml) and found it was in an excellent condition.

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I was trying to look for recipes to lint for you, but it appears we have a merge conflict. Please try to merge or rebase with the base branch to resolve this conflict.

Please ping the 'conda-forge/core' team (using the @ notation in a comment) if you believe this is a bug.

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe/recipe.yaml) and found it was in an excellent condition.

[MementoRC]

@isuruf This PR combines the multi-output with the addition of MSVC

[dslarm]

LGTM!

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I was trying to look for recipes to lint for you, but it appears we have a merge conflict. Please try to merge or rebase with the base branch to resolve this conflict.

Please ping the 'conda-forge/core' team (using the @ notation in a comment) if you believe this is a bug.

[MementoRC]

@conda-forge-admin Please rerender

[conda-forge-admin]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe/recipe.yaml) and found it was in an excellent condition.