compiler: allow non-built internal dependencies as arguments

Allow methods on the compiler object to receive internal dependencies,
as long as they only specify compiler/linker arguments or other
dependencies that satisfy the same requirements.

This is useful if you're using internal dependencies to add special
"-D" flags such as -DNCURSES_WIDECHAR, -D_XOPEN_SOURCE_EXTENDED or
-DGLIB_STATIC_COMPILATION.

1 files changed, 6 insertions, 0 deletions

diff --git a/docs/markdown/snippets/compiler_method_internal_deps.md b/docs/markdown/snippets/compiler_method_internal_deps.md
new file mode 100644
index 0000000..bde6b4f
--- /dev/null
+++ b/docs/markdown/snippets/compiler_method_internal_deps.md
@@ -0,0 +1,6 @@
+## Passing internal dependencies to the compiler object
+
+Methods on the compiler object (such as `compiles`, `links`, `has_header`)
+can be passed dependencies returned by `declare_dependency`, as long as they
+only specify compiler/linker arguments or other dependencies that satisfy
+the same requirements.