* Mathieu Malaterre <[email protected]> [2022-11-29 16:06]:
% cat CMakeLists.txt cmake_minimum_required(VERSION 3.12.1 FATAL_ERROR) project(p)add_library(foo foo.cpp) set(defs "-D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS") target_compile_definitions(foo PRIVATE ${defs})
This does not work the way you expect. List items are separated by
semicolon (not whitespace) when stored in a variable [1].
For example,
set(args "a b c")
foo(a b c)
bar(${args})
will call foo() with three arguments "a", "b", "c", but bar() with
one argument "a b c".
If you want ${args} to be treated as a list, you either need to
replace spaces by semicolons,
set(args "a;b;c")
or let set() implicitly concatenate multiple value arguments into a
single list:
set(args "a" "b" "c")
set(args a b c)
Cheers
Timo
[1] https://cmake.org/cmake/help/latest/manual/cmake-language.7.html#lists
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