ref-manual/variables.rst: document missing SDK_*_ARCH variables

These variables control the flags for the assembler, compiler and linker
when building for nativesdk recipes.

Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
(From yocto-docs rev: 95f4aabe48a6e06f8391e032c6a7038bf0e10332)

Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
(cherry picked from commit c08f6d3c8aee86264c069b7c30850cb02de76076)
Signed-off-by: Antonin Godard <antonin.godard@bootlin.com>
Signed-off-by: Steve Sakoman <steve@sakoman.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/documentation/ref-manual/variables.rst b/documentation/ref-manual/variables.rst
index b3d82eba6f..575351c6c8 100644
--- a/documentation/ref-manual/variables.rst
+++ b/documentation/ref-manual/variables.rst
@@ -7597,11 +7597,21 @@ system and gives an overview of their function and contents.
 
       Only one archive type can be specified.
 
+   :term:`SDK_AS_ARCH`
+      Specifies architecture-specific assembler flags when building
+      :ref:`ref-classes-nativesdk` recipes. By default, the value of
+      :term:`SDK_AS_ARCH` equals the one of :term:`BUILD_AS_ARCH`.
+
    :term:`SDK_BUILDINFO_FILE`
       When using the :ref:`ref-classes-image-buildinfo` class,
       specifies the file in the SDK to write the build information into. The
       default value is "``/buildinfo``".
 
+   :term:`SDK_CC_ARCH`
+      Specifies the architecture-specific C compiler flags when building
+      :ref:`ref-classes-nativesdk` recipes. By default, the value of
+      :term:`SDK_CC_ARCH` equals the one of :term:`BUILD_CC_ARCH`.
+
    :term:`SDK_CUSTOM_TEMPLATECONF`
       When building the extensible SDK, if :term:`SDK_CUSTOM_TEMPLATECONF` is set to
       "1" and a ``conf/templateconf.cfg`` file exists in the :term:`Build Directory`
@@ -7683,6 +7693,11 @@ system and gives an overview of their function and contents.
       :term:`SDK_EXT_TYPE` is set to "minimal", and defaults to "1" if
       :term:`SDK_EXT_TYPE` is set to "full".
 
+   :term:`SDK_LD_ARCH`
+      Specifies architecture-specific linker flags when building
+      :ref:`ref-classes-nativesdk` recipes. By default, the value of
+      :term:`SDK_LD_ARCH` equals the one of :term:`BUILD_LD_ARCH`.
+
    :term:`SDK_NAME`
       The base name for SDK output files. The default value (as set in
       ``meta-poky/conf/distro/poky.conf``) is derived from the