kumquat-buildroot/package/pkg-utils.mk
Thomas De Schampheleire 75f18de67e pkg-utils.mk: add utility functions find*clauses and notfirstword
This patch adds a few utility functions to pkg-utils.mk.

Functions finddirclauses and findfileclauses help in building a find command
that skips a set of directories and performs operations on a set of files.
This pattern can for example be used to keep certain files or directories from
being stripped, or to remove certain files from a package installation.

The notfirstword function is the inverse of the 'firstword' function in make:
it returns all but the first word.

Signed-off-by: Thomas De Schampheleire <thomas.de.schampheleire@gmail.com>
Acked-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be>
Signed-off-by: Peter Korsgaard <jacmet@sunsite.dk>
2012-06-23 23:14:56 +02:00

95 lines
3.0 KiB
Makefile

############################################################################
#
# This file contains various utility functions used by the package
# infrastructure, or by the packages themselves.
#
############################################################################
# UPPERCASE Macro -- transform its argument to uppercase and replace dots and
# hyphens to underscores
# Heavily inspired by the up macro from gmsl (http://gmsl.sf.net)
# This is approx 5 times faster than forking a shell and tr, and
# as this macro is used a lot it matters
# This works by creating translation character pairs (E.G. a:A b:B)
# and then looping though all of them running $(subst from,to,text)
[FROM] := a b c d e f g h i j k l m n o p q r s t u v w x y z . -
[TO] := A B C D E F G H I J K L M N O P Q R S T U V W X Y Z _ _
UPPERCASE = $(strip $(eval __tmp := $1) \
$(foreach c, $(join $(addsuffix :,$([FROM])),$([TO])), \
$(eval __tmp := \
$(subst $(word 1,$(subst :, ,$c)),$(word 2,$(subst :, ,$c)),\
$(__tmp)))) \
$(__tmp))
#
# Manipulation of .config files based on the Kconfig
# infrastructure. Used by the Busybox package, the Linux kernel
# package, and more.
#
define KCONFIG_ENABLE_OPT
$(SED) "/\\<$(1)\\>/d" $(2)
echo "$(1)=y" >> $(2)
endef
define KCONFIG_SET_OPT
$(SED) "/\\<$(1)\\>/d" $(3)
echo "$(1)=$(2)" >> $(3)
endef
define KCONFIG_DISABLE_OPT
$(SED) "/\\<$(1)\\>/d" $(2)
echo "# $(1) is not set" >> $(2)
endef
# Helper functions to determine the name of a package and its
# directory from its makefile directory, using the $(MAKEFILE_LIST)
# variable provided by make. This is used by the *TARGETS macros to
# automagically find where the package is located. Note that the
# pkgdir macro is carefully written to handle the case of the Linux
# package, for which the package directory is an empty string.
define pkgdir
$(dir $(lastword $(MAKEFILE_LIST)))
endef
define pkgname
$(lastword $(subst /, ,$(call pkgdir)))
endef
define pkgparentdir
$(patsubst %$(call pkgname)/,%,$(call pkgdir))
endef
# Define extractors for different archive suffixes
INFLATE.bz2 = $(BZCAT)
INFLATE.gz = $(ZCAT)
INFLATE.tbz = $(BZCAT)
INFLATE.tbz2 = $(BZCAT)
INFLATE.tgz = $(ZCAT)
INFLATE.xz = $(XZCAT)
INFLATE.tar = cat
# MESSAGE Macro -- display a message in bold type
MESSAGE = echo "$(TERM_BOLD)>>> $($(PKG)_NAME) $($(PKG)_VERSION) $(1)$(TERM_RESET)"
TERM_BOLD := $(shell tput smso)
TERM_RESET := $(shell tput rmso)
# Utility functions for 'find'
# findfileclauses(filelist) => -name 'X' -o -name 'Y'
findfileclauses = $(call notfirstword,$(patsubst %,-o -name '%',$(1)))
# finddirclauses(base, dirlist) => -path 'base/dirX' -o -path 'base/dirY'
finddirclauses = $(call notfirstword,$(patsubst %,-o -path '$(1)/%',$(2)))
# Miscellaneous utility functions
# notfirstword(wordlist): returns all but the first word in wordlist
notfirstword = $(wordlist 2,$(words $(1)),$(1))
# Needed for the foreach loops to loop over the list of hooks, so that
# each hook call is properly separated by a newline.
define sep
endef