[ptxdist] [PATCH v2] doc: mention dedicated PTXdist macros to be used in rule files

[Juergen Borleis <jbe@pengutronix.de>]

In order to simplify rule files, it's worth to use more of the provided
rule file option macros PTXdist already provides.

Signed-off-by: Juergen Borleis <jbe@pengutronix.de>
---
 doc/dev_manual.rst | 22 ++++++++--------------
 1 file changed, 8 insertions(+), 14 deletions(-)

diff --git a/doc/dev_manual.rst b/doc/dev_manual.rst
index f0c2e00ee..effafa6e0 100644
--- a/doc/dev_manual.rst
+++ b/doc/dev_manual.rst
@@ -892,23 +892,17 @@ file and add the correct parameters:
     #
     # autoconf
     #
-    FOO_CONF_OPT := $(CROSS_AUTOCONF_USR)
-
-    ifdef PTXCONF_FOO_DEBUG
-    FOO_CONF_OPT += --enable-debug
-    else
-    FOO_CONF_OPT += --disable-debug
-    endif
-
-    ifdef PTXCONF_FOO_BAR
-    FOO_CONF_OPT += --with-bar
-    else
-    FOO_CONF_OPT += --without-bar
-    endif
+    FOO_CONF_OPT := \
+        $(CROSS_AUTOCONF_USR) \
+        --$(call ptx/endis, PTXCONF_FOO_DEBUG)-debug \
+        --$(call ptx/wwo, PTXCONF_FOO_BAR)-bar
 
-.. important:: Please note the trailing ``PTXCONF_`` for each define. While Kconfig is
+.. important:: Please note the leading ``PTXCONF_`` for each define. While Kconfig is
   using ``FOO_BAR``, the rule file must use ``PTXCONF_FOO_BAR`` instead.
 
+.. note:: Refer :ref:`Rule File Macro Reference <param_macros>` for further
+   details about these special kind of option macros (e.g. ``ptx/...``).
+
 It is a good practice to add both settings, e.g. ``--disable-debug``
 even if this is the default case. Sometimes ``configure`` tries to guess
 something and the binary result might differ depending on the build
-- 
2.11.0


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