cmake/Tests/RunCMake/CompilerChange/ToolchainFromFileDeleted-step2-prep.cmake at master - cmake - SHS Gitea

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Aiden Woodruff ee6bfdc1f3 CMAKE_TOOLCHAIN_FILE: Improve recovery from changed compiler or toolchain file

Replace __CMAKE_DELETE_CACHE_CHANGE_VARS_ with a set of changed
variables in cmState to avoid interference from scripts and simplify
handling of changed variables.

Errors during configure step will block re-configure when the toolchain
file has changed. Downstream errors can be caused by failing in
EnableLanguage without an error, behavior introduced in 7a989ed58a
(CMAKE_TOOLCHAIN_FILE: Detect path changes and reset cache, 2026-06-24).
Errors directly related to a changed toolchain file should be fixed by
using the new one.

Trigger a fatal error when the toolchain file change is detected to
avoid wasteful configure that will be reset anyway, then re-configure
only for that specific case. Avoid re-configuring multiple times.

Fixes: #27867

2026-07-03 09:25:33 -04:00

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 file(REMOVE "${RunCMake_BINARY_DIR}/baz.cmake")
 file(WRITE
   "${RunCMake_TEST_BINARY_DIR}/toolchain.txt"
   "${RunCMake_BINARY_DIR}/bar.cmake\n"
 )