interpreter: new function add_project_dependencies()

This function can be used to add fundamental dependencies such as glib
to all build products in one fell swoop.  This can be useful whenever,
due to a project's coding conventions, it is not really possible to
compile any source file without including the dependency.

Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

1 files changed, 11 insertions, 0 deletions

diff --git a/docs/markdown/snippets/add_project_dependencies.md b/docs/markdown/snippets/add_project_dependencies.md
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+## `add_project_dependencies()` function
+
+Dependencies can now be added to all build products using
+`add_project_dependencies()`.  This can be useful in several
+cases:
+
+* with special dependencies such as `dependency('threads')`
+* with system libraries such as `find_library('m')`
+* with the `include_directories` keyword argument of
+`declare_dependency()`, to add both source and build
+directories to the include search path