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${ noResults }
meson/test cases/common/221 source set dictionary
Paolo Bonzini
d894c48660
In QEMU a single set of source files is built against many different configurations in order to generate many executable. Each executable includes a different but overlapping subset of the source files; some of the files are compiled separately for each output, others are compiled just once. Using Makefiles, this is achieved with a complicated mechanism involving a combination of non-recursive and recursive make; Meson can do better, but because there are hundreds of such conditional rules, it's important to keep meson.build files brief and easy to follow. Therefore, this commit adds a new module to satisfy this use case while preserving Meson's declarative nature. Configurations are mapped to a configuration_data object, and a new "source set" object is used to store all the rules, and then retrieve the desired set of sources together with their dependencies. The test case shows how extract_objects can be used to satisfy both cases, i.e. when the object files are shared across targets and when they have to be separate. In the real-world case, a project would use two source set objects for the two cases and then do "executable(..., sources: ... , objects: ...)". The next commit adds such an example. |
6 years ago | |
|---|---|---|
| .. | ||
| subdir | new module "sourceset" to match source file lists against configuration data | 6 years ago |
| a.c | new module "sourceset" to match source file lists against configuration data | 6 years ago |
| all.h | new module "sourceset" to match source file lists against configuration data | 6 years ago |
| f.c | new module "sourceset" to match source file lists against configuration data | 6 years ago |
| g.c | new module "sourceset" to match source file lists against configuration data | 6 years ago |
| meson.build | new module "sourceset" to match source file lists against configuration data | 6 years ago |
| nope.c | new module "sourceset" to match source file lists against configuration data | 6 years ago |