haiku/build/jam/HelperRules
2013-09-18 15:41:12 +02:00

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# Rules without side effects.
# Vanilla Jam compatibility
if ! $(INVOCATION_SUBDIR_SET) {
rule FIsPrefix
{
# FIsPrefix <a> : <b> ;
# Returns true, if list <a> is a prefix (a proper one or equal) of
# list <b>, an empty list otherwise.
local a = $(1) ;
local b = $(2) ;
while $(a) && $(a[1]) = $(b[1]) {
a = $(a[2-]) ;
b = $(b[2-]) ;
}
if $(a) {
return ;
} else {
return true ;
}
}
rule LocalClean { Clean $(1) : $(2) ; }
rule LocalDepends { Depends $(1) : $(2) ; }
} # vanilla Jam compatibility
rule FFilter
{
# FFilter <list> : <excludes> ;
# Removes all occurrences of <excludes> in <list>.
local list = $(1) ;
local excludes = $(2) ;
local newList ;
local item ;
for item in $(list) {
local skip ;
local exclude ;
for exclude in $(excludes) {
if $(item) = $(exclude) {
skip = true ;
}
}
if ! $(skip) {
newList += $(item) ;
}
}
return $(newList) ;
}
rule FGetGrist
{
# FGetGrist <target> ;
#
# Returns the grist of a target, not including leading "<" and trailing ">".
local grist = $(1[1]:G) ;
if ! $(grist) {
return ;
}
return [ Match <(.*)> : $(grist) ] ;
}
rule FSplitString string : delimiterChar
{
local result ;
while $(string) {
local split = [ Match $(delimiterChar)*([^$(delimiterChar)]+)(.*)
: $(string) ] ;
result += $(split[1]) ;
string = $(split[2-]) ;
}
return $(result) ;
}
rule FSplitPath
{
# SplitPath <path> ;
# Decomposes a path into its components.
local path = $(1:G=) ;
local components ;
# $(path:D) for "/" is "/". Therefore the second condition.
while $(path:D) && $(path:D) != $(path)
{
# Note: $(path:B) returns "." for "..", but $(path:D=) is fine.
components = $(path:D=) $(components) ;
path = $(path:D) ;
}
components = $(path) $(components) ;
return $(components) ;
}
rule FConditionsHold conditions : predicate
{
# FConditionsHold <conditions> : <predicate> ;
# Checks whether the conditions <conditions> are satisfied by the predicate
# rule <predicate> and returns a respective result (if so: "1", if not:
# empty list). The conditions are satisfied when <conditions> is not empty
# and
# * none of the negative conditions it contains hold and
# * if <conditions> contains any positive conditions, at least one of those
# holds.
# A positive condition is an element not starting with a "!". It holds when
# the predicate rule <predicate> returns true for the element.
# A negative condition is an element that starts with a "!". It holds when
# the predicate rule <predicate> returns true for the string resulting from
# removing the leading "!".
#
# <conditions> - The list of conditions.
# <predicate> - The predicate rule invoked to test the elements.
#
# Examples:
# For a predicate that holds for the elements of the set { a b c } the
# following conditions hold:
# { a }, { a d }, { !d }, { !d !e }, { a !d }, { b !e !f }
# The following conditions don't hold:
# { }, { d }, { d e }, { !a }, { !a b }, { !d e } { a b !c !d }
local hasPositive ;
local hasNegative ;
local positiveMatch ;
local condition ;
for condition in $(conditions) {
switch $(condition) {
case !* :
{
hasNegative = 1 ;
condition = [ Match "!(.*)" : $(condition) ] ;
if [ $(predicate) $(condition) ] {
return ;
}
}
case * :
{
hasPositive = 1 ;
if [ $(predicate) $(condition) ] {
positiveMatch = 1 ;
}
}
}
}
if $(hasPositive) {
return $(positiveMatch) ;
}
return $(hasNegative) ;
}
rule SetPlatformCompatibilityFlagVariables
{
# SetPlatformCompatibilityFlagVariables <platform var> : <var prefix>
# : <platform kind> [ : other platforms ] ;
local platformVar = $(1) ;
local platform = $($(platformVar)) ;
local varPrefix = $(2) ;
local platformKind = $(3) ;
local otherPlatforms = $(4) ;
if ! $(platform) {
ECHO "Variable $(platformVar) not set. Please run ./configure or" ;
EXIT "specify it manually." ;
}
# special case: Haiku libbe.so built for testing under BeOS
if $(platform) = libbe_test {
platform = $(HOST_PLATFORM) ;
}
$(varPrefix)_PLATFORM_BEOS_COMPATIBLE = ;
$(varPrefix)_PLATFORM_BONE_COMPATIBLE = ;
$(varPrefix)_PLATFORM_DANO_COMPATIBLE = ;
$(varPrefix)_PLATFORM_HAIKU_COMPATIBLE = ;
switch $(platform)
{
case r5 :
{
$(varPrefix)_PLATFORM_BEOS_COMPATIBLE = true ;
}
case bone :
{
$(varPrefix)_PLATFORM_BONE_COMPATIBLE = true ;
}
case dano :
{
$(varPrefix)_PLATFORM_DANO_COMPATIBLE = true ;
}
case haiku_host :
{
$(varPrefix)_PLATFORM_HAIKU_COMPATIBLE = true ;
}
case haiku :
{
$(varPrefix)_PLATFORM_HAIKU_COMPATIBLE = true ;
}
case host :
# not compatible to anything
case * :
{
if ! ( $(platform) in $(otherPlatforms) ) {
Exit Unsupported $(platformKind) platform: $(platform) ;
}
}
}
# set lesser flags, e.g. "DANO" for "HAIKU" and "BEOS" for "BONE"
$(varPrefix)_PLATFORM_HAIKU_COMPATIBLE
?= $($(varPrefix)_PLATFORM_HAIKU_COMPATIBLE) ;
$(varPrefix)_PLATFORM_DANO_COMPATIBLE
?= $($(varPrefix)_PLATFORM_HAIKU_COMPATIBLE) ;
$(varPrefix)_PLATFORM_BONE_COMPATIBLE
?= $($(varPrefix)_PLATFORM_DANO_COMPATIBLE) ;
$(varPrefix)_PLATFORM_BEOS_COMPATIBLE
?= $($(varPrefix)_PLATFORM_BONE_COMPATIBLE) ;
# set the machine friendly flags
$(varPrefix)_PLATFORM_(haiku)_COMPATIBLE
?= $($(varPrefix)_PLATFORM_HAIKU_COMPATIBLE) ;
$(varPrefix)_PLATFORM_(haiku_host)_COMPATIBLE
?= $($(varPrefix)_PLATFORM_HAIKU_COMPATIBLE) ;
$(varPrefix)_PLATFORM_(dano)_COMPATIBLE
?= $($(varPrefix)_PLATFORM_DANO_COMPATIBLE) ;
$(varPrefix)_PLATFORM_(bone)_COMPATIBLE
?= $($(varPrefix)_PLATFORM_BONE_COMPATIBLE) ;
$(varPrefix)_PLATFORM_(r5)_COMPATIBLE
?= $($(varPrefix)_PLATFORM_BEOS_COMPATIBLE) ;
$(varPrefix)_PLATFORM_(libbe_test)_COMPATIBLE
?= $($(varPrefix)_PLATFORM_BEOS_COMPATIBLE) ;
}
rule FAnalyzeGCCVersion
{
# FAnalyzeGCCVersion <rawVersionVariable> ;
#
local varName = $(1) ;
local rawVersion = $($(varName)) ;
if ! $(rawVersion) {
ECHO "Variable $(varName) not set. Please run ./configure or" ;
EXIT "specify it manually." ;
}
local version = ;
# split the raw version string at `.' and `-' characters
while $(rawVersion) {
local split = [ Match "([^.-]*)[.-](.*)" : $(rawVersion) ] ;
if $(split) {
version += $(split[1]) ;
rawVersion = $(split[2]) ;
} else {
version += $(rawVersion) ;
rawVersion = ;
}
}
return $(version) ;
}
rule SetIncludePropertiesVariables prefix : suffix
{
# SetIncludePropertiesVariables <prefix> : <suffix> ;
#
suffix = $(suffix:E=) ;
if $($(prefix)_GCC_VERSION$(suffix)[1]) < 4 {
$(prefix)_INCLUDES_SEPARATOR$(suffix) = -I- ;
$(prefix)_LOCAL_INCLUDES_OPTION$(suffix) = -I ;
$(prefix)_SYSTEM_INCLUDES_OPTION$(suffix) = -I ;
} else {
$(prefix)_INCLUDES_SEPARATOR$(suffix) = ;
$(prefix)_LOCAL_INCLUDES_OPTION$(suffix) = "-iquote " ;
$(prefix)_SYSTEM_INCLUDES_OPTION$(suffix) = "-I " ;
}
}
#pragma mark -
rule SetPlatformForTarget
{
# SetPlatformForTarget <target> : <platform> ;
PLATFORM on $(1) = $(2) ;
}
rule SetSubDirPlatform
{
# SetSubDirPlatform <platform> ;
PLATFORM = $(1) ;
}
rule SetSupportedPlatformsForTarget
{
# SetSupportedPlatformsForTarget <target> : <platforms> ;
SUPPORTED_PLATFORMS on $(1) = $(2) ;
}
rule SetSubDirSupportedPlatforms
{
# SetSubDirSupportedPlatforms <platforms> ;
SUPPORTED_PLATFORMS = $(1) ;
}
rule AddSubDirSupportedPlatforms
{
# AddSubDirSupportedPlatforms <platforms> ;
SUPPORTED_PLATFORMS += $(1) ;
}
rule SetSubDirSupportedPlatformsBeOSCompatible
{
# SetSubDirSupportedPlatformsBeOSCompatible ;
SUPPORTED_PLATFORMS = $(HAIKU_BEOS_COMPATIBLE_PLATFORMS) ;
}
rule IsPlatformSupportedForTarget
{
# IsPlatformSupportedForTarget <target> [ : <platform> ]
#
on $(1) {
if $(PLATFORM) in $(SUPPORTED_PLATFORMS) {
return true ;
} else {
return ;
}
}
}
rule InheritPlatform
{
# InheritPlatform <children> : <parent> ;
# PLATFORM and SUPPORTED_PLATFORMS are set on <children> to their value
# on <parent>.
#
local children = $(1) ;
local parent = $(2) ;
on $(parent) {
PLATFORM on $(children) = $(PLATFORM) ;
SUPPORTED_PLATFORMS on $(children) = $(SUPPORTED_PLATFORMS) ;
}
}
rule SubDirAsFlags
{
SUBDIRASFLAGS += $(<) ;
}