From 85d07b0db65667c15e3873008f17b75d467c155b Mon Sep 17 00:00:00 2001
From: vanhofen <vanhofen@gmx.de>
Date: Thu, 7 Jul 2022 23:01:08 +0200
Subject: [PATCH] - add kconfig infrastructure

---
 package/Makefile.in    |  1 +
 package/pkg-kconfig.mk | 42 ++++++++++++++++++++++++++++++++++++++++++
 package/pkg-utils.mk   | 38 ++++++++++++++------------------------
 3 files changed, 57 insertions(+), 24 deletions(-)
 create mode 100644 package/pkg-kconfig.mk

diff --git a/package/Makefile.in b/package/Makefile.in
index aae560fd..adeca403 100644
--- a/package/Makefile.in
+++ b/package/Makefile.in
@@ -29,6 +29,7 @@ include package/pkg-autotools.mk
 include package/pkg-cmake.mk
 include package/pkg-generic.mk
 include package/pkg-individual.mk
+include package/pkg-kconfig.mk
 include package/pkg-kernel-module.mk
 include package/pkg-meson.mk
 include package/pkg-python.mk
diff --git a/package/pkg-kconfig.mk b/package/pkg-kconfig.mk
new file mode 100644
index 00000000..97ff8566
--- /dev/null
+++ b/package/pkg-kconfig.mk
@@ -0,0 +1,42 @@
+################################################################################
+#
+# Kconfig packages
+#
+################################################################################
+
+#
+# Manipulation of .config files based on the Kconfig infrastructure.
+# Used by the BusyBox package, the Linux kernel package, and more.
+#
+
+# KCONFIG_DOT_CONFIG ([file])
+# Returns the path to the .config file that should be used, which will
+# be $(1) if provided, or the current package .config file otherwise.
+KCONFIG_DOT_CONFIG = $(strip \
+	$(if $(strip $(1)), $(1), \
+		$(PKG_BUILD_DIR)/$($(PKG)_KCONFIG_DOTCONFIG) \
+	) \
+)
+
+# KCONFIG_MUNGE_DOT_CONFIG (option, newline [, file])
+define KCONFIG_MUNGE_DOT_CONFIG
+	$(SED) "/\\<$(strip $(1))\\>/d" $(call KCONFIG_DOT_CONFIG,$(3))
+	echo '$(strip $(2))' >> $(call KCONFIG_DOT_CONFIG,$(3))
+endef
+
+# KCONFIG_ENABLE_OPT (option [, file])
+KCONFIG_ENABLE_OPT  = $(call KCONFIG_MUNGE_DOT_CONFIG, $(1), $(1)=y, $(2))
+# KCONFIG_SET_OPT (option, value [, file])
+KCONFIG_SET_OPT     = $(call KCONFIG_MUNGE_DOT_CONFIG, $(1), $(1)=$(2), $(3))
+# KCONFIG_DISABLE_OPT  (option [, file])
+KCONFIG_DISABLE_OPT = $(call KCONFIG_MUNGE_DOT_CONFIG, $(1), $(SHARP_SIGN) $(1) is not set, $(2))
+
+# -----------------------------------------------------------------------------
+
+define kconfig-package
+	$(eval PKG_MODE = $(pkg-mode))
+	$(call PREPARE,$(1))
+	$(if $(filter $(1),$(PKG_NO_BUILD)),,$(call TARGET_MAKE_BUILD))
+	$(if $(filter $(1),$(PKG_NO_INSTALL)),,$(call TARGET_MAKE_INSTALL))
+	$(call TARGET_FOLLOWUP)
+endef
diff --git a/package/pkg-utils.mk b/package/pkg-utils.mk
index d6f46376..abba8310 100644
--- a/package/pkg-utils.mk
+++ b/package/pkg-utils.mk
@@ -99,7 +99,7 @@ endif
 # build commands
 # TODO: python, kernel
 ifndef $(PKG)_BUILD_CMDS
-  ifeq ($(PKG_MODE),$(filter $(PKG_MODE),AUTOTOOLS CMAKE GENERIC))
+  ifeq ($(PKG_MODE),$(filter $(PKG_MODE),AUTOTOOLS CMAKE GENERIC KCONFIG))
     ifeq ($(PKG_HOST_PACKAGE),YES)
       $(PKG)_BUILD_CMDS = $$(HOST_MAKE_BUILD_CMDS)
     else
@@ -111,6 +111,8 @@ ifndef $(PKG)_BUILD_CMDS
     else
       $(PKG)_BUILD_CMDS = $$(TARGET_NINJA_BUILD_CMDS)
     endif
+  else
+    $(PKG)_BUILD_CMDS = echo "$(PKG_NO_BUILD)"
   endif
 endif
 
@@ -131,7 +133,7 @@ endif
 # install commands
 # TODO: python, kernel
 ifndef $(PKG)_INSTALL_CMDS
-  ifeq ($(PKG_MODE),$(filter $(PKG_MODE),AUTOTOOLS CMAKE GENERIC))
+  ifeq ($(PKG_MODE),$(filter $(PKG_MODE),AUTOTOOLS CMAKE GENERIC KCONFIG))
     ifeq ($(PKG_HOST_PACKAGE),YES)
       $(PKG)_INSTALL_CMDS = $$(HOST_MAKE_INSTALL_CMDS)
     else
@@ -143,6 +145,8 @@ ifndef $(PKG)_INSTALL_CMDS
     else
       $(PKG)_INSTALL_CMDS = $$(TARGET_NINJA_INSTALL_CMDS)
     endif
+  else
+    $(PKG)_INSTALL_CMDS = echo "$(PKG_NO_INSTALL)"
   endif
 endif
 
@@ -154,6 +158,14 @@ ifndef $(PKG)_NINJA_OPTS
   $(PKG)_NINJA_OPTS =
 endif
 
+#kconfig
+ifeq ($(PKG_MODE),KCONFIG)
+  ifndef $(PKG)_KCONFIG_FILE
+    $(PKG)_KCONFIG_FILE = .config
+  endif
+  $(PKG)_KCONFIG_DOTCONFIG = $$($(PKG)_KCONFIG_FILE)
+endif
+
 endef # PKG_CHECK_VARIABLES
 
 pkg-check-variables = $(call PKG_CHECK_VARIABLES)
@@ -409,25 +421,3 @@ define TARGET_FOLLOWUP
 	$(foreach hook,$($(PKG)_POST_FOLLOWUP_HOOKS),$(call $(hook))$(sep))
 	$(call TOUCH)
 endef
-
-# -----------------------------------------------------------------------------
-
-#
-# Manipulation of .config files based on the Kconfig infrastructure.
-# Used by the BusyBox package, the Linux kernel package, and more.
-#
-
-define KCONFIG_ENABLE_OPT # (option, file)
-	$(SED) "/\\<$(1)\\>/d" $(2)
-	echo '$(1)=y' >> $(2)
-endef
-
-define KCONFIG_SET_OPT # (option, value, file)
-	$(SED) "/\\<$(1)\\>/d" $(3)
-	echo '$(1)=$(2)' >> $(3)
-endef
-
-define KCONFIG_DISABLE_OPT # (option, file)
-	$(SED) "/\\<$(1)\\>/d" $(2)
-	echo '# $(1) is not set' >> $(2)
-endef