CMAKE_NINJA_OUTPUT_PATH_PREFIXΒΆ
Set output files path prefix for the Ninja generator.
Every output files listed in the generated build.ninja will be
prefixed by the contents of this variable (a trailing slash is
appended if missing). This is useful when the generated ninja file is
meant to be embedded as a subninja file into a super ninja
project. For example, a ninja build file generated with a command
like:
cd top-build-dir/sub &&
cmake -G Ninja -DCMAKE_NINJA_OUTPUT_PATH_PREFIX=sub/ path/to/source
can be embedded in top-build-dir/build.ninja with a directive like
this:
subninja sub/build.ninja
The auto-regeneration rule in top-build-dir/build.ninja must have an
order-only dependency on sub/build.ninja.
Note
When CMAKE_NINJA_OUTPUT_PATH_PREFIX is set, the project generated
by CMake cannot be used as a standalone project. No default targets
are specified.