build.jam: fix malformed alias so b2 install generates cmake config

[jll63]

Summary

build.jam declares the boost_openmethod alias with usage-requirements written as a literal source name and the alias placed outside the explicit block. The boost-library openmethod rule then cannot detect the library's interface, and b2 install skips the cmake config files for openmethod.

This breaks downstream consumers that call find_package(Boost CONFIG REQUIRED COMPONENTS openmethod) against a b2-installed Boost — including the unified-cmake CI job on Windows, which currently fails with:

Could not find a package configuration file provided by
"boost_openmethod" (requested version 1.92.0) with any of the following names:
  boost_openmethodConfig.cmake
  boost_openmethod-config.cmake

Fix

Move the alias inside explicit and put <include>include <library>$(boost_dependencies) in the proper usage-requirements slot (the 5th colon-separated argument). This matches the pattern used by every other header-only Boost library (assert, core, describe, mp11, preprocessor, ...).

explicit
    [ alias boost_openmethod : : : : <include>include <library>$(boost_dependencies) ]
    [ alias all : boost_openmethod test ]
    ;

Test plan

• Verify CI's unified-cmake test (Windows, b2-installed) now passes
• Verify b2 install produces <prefix>/lib/cmake/boost_openmethod-<version>/boost_openmethod-config.cmake
• Verify find_package(Boost CONFIG REQUIRED COMPONENTS openmethod) succeeds against a b2-installed Boost

[cppalliance-bot]

An automated preview of the documentation is available at https://74.openmethod.prtest3.cppalliance.org/libs/openmethod/doc/html/index.html

If more commits are pushed to the pull request, the docs will rebuild at the same URL.

2026-05-25 00:45:42 UTC

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 93.27%. Comparing base (814a8e0) to head (c245a80).
⚠️ Report is 7 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop      #74      +/-   ##
===========================================
- Coverage    94.34%   93.27%   -1.07%     
===========================================
  Files           43       41       -2     
  Lines         2916     2811     -105     
===========================================
- Hits          2751     2622     -129     
- Misses         165      189      +24     

see 26 files with indirect coverage changes

---

Continue to review full report in Codecov by Sentry.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 3632b00...c245a80. Read the comment docs.

🚀 New features to boost your workflow:

• ❄️ Test Analytics: Detect flaky tests, report on failures, and find test suite problems.