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build: introduce PKG_BUILD_FLAGS and move PKG_IREMAP to it

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PKG_BUILD_FLAGS is a new variable for package Makefiles similar to
PKG_FLAGS. It's a whitespace separated list of flags to control various
aspects of how a package is build.

The build system and/or .config defines the default for each, but
every package has the means to override it. Using $flagname enables
a flag, no-$flagname disables it.

Start with PKG_IREMAP as "iremap". That's easy as no package here
nor in any package feed uses it. The default is unchanged: enabled.

Packages can opt-out via:
PKG_BUILD_FLAGS:=no-iremap
(Not that any should, just to illustrate how to use it)

Signed-off-by: Andre Heider <a.heider@gmail.com>
This commit is contained in:
Andre Heider 2023-02-02 19:20:42 +01:00 committed by Christian Marangi
parent eb564690c9
commit 0a44c579a1
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GPG Key ID: AC001D09ADBFEAD7
1 changed files with 14 additions and 2 deletions
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16
include/package.mk
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@ -12,7 +12,6 @@ PKG_BUILD_DIR ?= $(BUILD_DIR)/$(if $(BUILD_VARIANT),$(PKG_NAME)-$(BUILD_VARIANT)
PKG_INSTALL_DIR ?= $(PKG_BUILD_DIR)/ipkg-install
PKG_BUILD_PARALLEL ?=
PKG_USE_MIPS16 ?= 1
PKG_IREMAP ?= 1
PKG_SKIP_DOWNLOAD=$(USE_SOURCE_DIR)$(USE_GIT_TREE)$(USE_GIT_SRC_CHECKOUT)
MAKE_J:=$(if $(MAKE_JOBSERVER),$(MAKE_JOBSERVER) $(if $(filter 3.% 4.0 4.1,$(MAKE_VERSION)),-j))
@ -30,7 +29,20 @@ ifdef CONFIG_USE_MIPS16
TARGET_CFLAGS += -mips16 -minterlink-mips16
endif
endif
ifeq ($(strip $(PKG_IREMAP)),1)
PKG_BUILD_FLAGS?=
__unknown_flags=$(filter-out no-iremap,$(PKG_BUILD_FLAGS))
ifneq ($(__unknown_flags),)
$(error unknown PKG_BUILD_FLAGS: $(__unknown_flags))
endif
# $1=flagname, $2=default (0/1)
define pkg_build_flag
$(if $(filter no-$(1),$(PKG_BUILD_FLAGS)),0,$(if $(filter $(1),$(PKG_BUILD_FLAGS)),1,$(2)))
endef
ifeq ($(call pkg_build_flag,iremap,1),1)
IREMAP_CFLAGS = $(call iremap,$(PKG_BUILD_DIR),$(notdir $(PKG_BUILD_DIR)))
TARGET_CFLAGS += $(IREMAP_CFLAGS)
endif