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35 lines
1.3 KiB
35 lines
1.3 KiB
6 years ago
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## Projects args can be set separately for cross and native builds (potentially breaking change)
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It has been a longstanding bug (or let's call it a "delayed bug fix")
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that if yo do this:
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```meson
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add_project_arguments('-DFOO', language : 'c')
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```
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Then the flag is used both in native and cross compilations. This is
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very confusing and almost never what you want. To fix this a new
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keyword `native` has been added to all functions that add arguments,
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namely `add_global_arguments`, `add_global_link_arguments`,
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`add_project_arguments` and `add_project_link_arguments` that behaves
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like the following:
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```
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## Added to native builds when compiling natively and to cross
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## compilations when doing cross compiles.
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add_project_arguments(...)
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## Added only to native compilations, not used in cross compilations.
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add_project_arguments(..., native : true)
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## Added only to cross compilations, not used in native compilations.
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add_project_arguments(..., native : false)
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```
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Also remember that cross compilation is a property of each
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target. There can be target that are compiled with the native compiler
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and some which are compiled with the cross compiler.
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Unfortunately this change is backwards incompatible and may cause some
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projects to fail building. However this should be very rare in practice.
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