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| -rw-r--r-- | docs/markdown/Compiler-properties.md | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/docs/markdown/Compiler-properties.md b/docs/markdown/Compiler-properties.md index 6d04c8bd7..7eea36891 100644 --- a/docs/markdown/Compiler-properties.md +++ b/docs/markdown/Compiler-properties.md @@ -194,6 +194,18 @@ correctly report the function as missing. Without the header however, it would lack the necessary availability information and incorrectly report the function as available. +## Is a macro defined? + +Macro detection can often be useful to determine if non-standard features +are supported on your target platform. Fortunately, Meson makes it +easy to check if a macro is defined: + +```meson +if [[#compiler.has_define]]('__SIZEOF_INT128__') + # macro is defined, do whatever is required +endif +``` + ## Does a structure contain a member? Some platforms have different standard structures. Here's how one |