Hello,
I'm creating a static library (*.a) with a separate build system (cargo).
That build system also produces a dependency file in the Makefile format
(also produced by `gcc -M`). Is it possible to include this file into the
generated makefiles either through a makefile inclusion or through cmake
parsing the file?
Obviously I don't want to call `cargo` unless one of my source files
changed.
Here is what I've got so far:
```
add_custom_command(
OUTPUT
${CMAKE_CURRENT_BINARY_DIR}/rust/test/target/${RUST_PROFILE}/libtest.a
COMMAND
${CMAKE_COMMAND} -E env SYSROOT=${CMAKE_SYSROOT}
INCLUDES="${RUST_INCLUDES}" cargo build --manifest-path
${CMAKE_CURRENT_SOURCE_DIR}/rust/test/Cargo.toml --target-dir
${CMAKE_CURRENT_BINARY_DIR}/rust/test/target ${RUST_CARGO_FLAG}
COMMAND
)
add_custom_target(rust DEPENDS
${CMAKE_CURRENT_BINARY_DIR}/rust/test/target/${RUST_PROFILE}/libbase.a)
```
Thanks
- Niklas
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