From 88cd2d41acb994684a3e4ead1b1676019f43b4b6 Mon Sep 17 00:00:00 2001
From: Shea Levy <shea@shealevy.com>
Date: Thu, 8 Feb 2018 11:26:18 -0500
Subject: Add plugins to make Nix more extensible.

All plugins in plugin-files will be dlopened, allowing them to
statically construct instances of the various Register* types Nix
supports.
---
 mk/libraries.mk | 7 +++++++
 1 file changed, 7 insertions(+)

(limited to 'mk')

diff --git a/mk/libraries.mk b/mk/libraries.mk
index 3cd7a5310..14c95fa91 100644
--- a/mk/libraries.mk
+++ b/mk/libraries.mk
@@ -45,6 +45,11 @@ endif
 # - $(1)_INSTALL_DIR: the directory where the library will be
 #   installed.  Defaults to $(libdir).
 #
+# - $(1)_EXCLUDE_FROM_LIBRARY_LIST: if defined, the library will not
+#   be automatically marked as a dependency of the top-level all
+#   target andwill not be listed in the make help output. This is
+#   useful for libraries built solely for testing, for example.
+#
 # - BUILD_SHARED_LIBS: if equal to ‘1’, a dynamic library will be
 #   built, otherwise a static library.
 define build-library
@@ -149,7 +154,9 @@ define build-library
   $(1)_DEPS := $$(foreach fn, $$($(1)_OBJS), $$(call filename-to-dep, $$(fn)))
   -include $$($(1)_DEPS)
 
+  ifndef $(1)_EXCLUDE_FROM_LIBRARY_LIST
   libs-list += $$($(1)_PATH)
+  endif
   clean-files += $$(_d)/*.a $$(_d)/*.$(SO_EXT) $$(_d)/*.o $$(_d)/.*.dep $$($(1)_DEPS) $$($(1)_OBJS)
   dist-files += $$(_srcs)
 endef
-- 
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