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-rw-r--r--Documentation/process/changes.rst8
1 files changed, 8 insertions, 0 deletions
diff --git a/Documentation/process/changes.rst b/Documentation/process/changes.rst
index 005d8842a503..7a92a06f90de 100644
--- a/Documentation/process/changes.rst
+++ b/Documentation/process/changes.rst
@@ -81,6 +81,14 @@ The build system has, as of 4.13, switched to using thin archives (`ar T`)
rather than incremental linking (`ld -r`) for built-in.a intermediate steps.
This requires binutils 2.20 or newer.
+pkg-config
+----------
+
+The build system, as of 4.18, requires pkg-config to check for installed
+kconfig tools and to determine flags settings for use in
+'make {menu,n,g,x}config'. Previously pkg-config was being used but not
+verified or documented.
+
Flex
----