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Mickaël Germain 0f6e8ded1d GenEx: add $<LIST:TRANSFORM,...,APPLY,body> action
Add an APPLY action to $<LIST:TRANSFORM> that evaluates an arbitrary <body>
once per selected element, with $<_0> bound to the element, so a list can be
mapped through any generator expression at generate time.  Unlike the
configure-time list(TRANSFORM ... APPLY <function>) command, the genex form has
no side effects and returns the body's value directly, and a list-valued result
expands into multiple elements.

The body evaluates in its own binding scope, so nested APPLY actions can shadow
$<_0>, and context-sensitive state it observes (such as target dependencies)
still propagates to the enclosing expression.  APPLY accepts the same
AT/FOR/REGEX selectors as the canned actions.

Issue: #27892
2026-06-21 18:05:53 -07:00

4 lines
156 B
CMake

set(input "net;audio;video")
file(GENERATE OUTPUT "${CMAKE_CURRENT_BINARY_DIR}/out.txt"
CONTENT "$<LIST:TRANSFORM,${input},APPLY,$<UPPER_CASE:$<_0>>>\n")