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-rw-r--r--Documentation/kbuild/kbuild.rst11
-rw-r--r--Documentation/kbuild/makefiles.rst2
2 files changed, 13 insertions, 0 deletions
diff --git a/Documentation/kbuild/kbuild.rst b/Documentation/kbuild/kbuild.rst
index 2d1fc03d346e..ef19b9c13523 100644
--- a/Documentation/kbuild/kbuild.rst
+++ b/Documentation/kbuild/kbuild.rst
@@ -77,6 +77,17 @@ HOSTLDLIBS
----------
Additional libraries to link against when building host programs.
+.. _userkbuildflags:
+
+USERCFLAGS
+----------
+Additional options used for $(CC) when compiling userprogs.
+
+USERLDFLAGS
+-----------
+Additional options used for $(LD) when linking userprogs. userprogs are linked
+with CC, so $(USERLDFLAGS) should include "-Wl," prefix as applicable.
+
KBUILD_KCONFIG
--------------
Set the top-level Kconfig file to the value of this environment
diff --git a/Documentation/kbuild/makefiles.rst b/Documentation/kbuild/makefiles.rst
index b008b90b92c9..11a296e52d68 100644
--- a/Documentation/kbuild/makefiles.rst
+++ b/Documentation/kbuild/makefiles.rst
@@ -982,6 +982,8 @@ The syntax is quite similar. The difference is to use "userprogs" instead of
When linking bpfilter_umh, it will be passed the extra option -static.
+ From command line, :ref:`USERCFLAGS and USERLDFLAGS <userkbuildflags>` will also be used.
+
5.4 When userspace programs are actually built
----------------------------------------------