ede/build/Utils.jam

#
# $Id$
#
# Part of Equinox Desktop Environment (EDE).
# Copyright (c) 2000-2007 EDE Authors.
#
# This program is licensed under terms of the 
# GNU General Public License version 2 or newer.
# See COPYING for details.


RMDIR_UNSFE ?= $(RM) -Rf ;
#RMDIR_SAFE  ?= "rmdir --ignore-fail-on-non-empty" ;
RMDIR_SAFE  ?= "rmdir" ;
CP ?= "cp" ;
MV ?= "mv" ;
MKDIRS ?= "mkdir -p" ;
LINKCMD ?= "ln -s" ;

# Fltk use .cxx extension for C++ files so it must
# be registered. This rule is called by jam so final 
# application must not use it.
rule UserObject
{
	switch $(>:S) {
		case .cxx : C++ $(<) : $(>) ;
		case * : Exit "Unknown suffix on $(>)" ;
	}
}

# Wildcard [optinal-directory :] [patterns] : [optional-prepend-directory] ;
# Create a list of files that match [patterns]. If [optional-directory]
# is given, it will return list from that directory. If [optional-prepend-directory]
# is given, all returned files will be prepended with that directory name.
#
# For example with 'baz.cpp, baz2.cpp':
#  list files in current directory
#  lst = [ Wildcard *.cpp ] ;  -> 'baz.cpp baz2.cpp'
#
#  list files in 'foo' directory
#  lst = [ Wildcard foo : *.cpp ] ; -> 'baz.cpp baz2.cpp'
#
#  list files in current directory and prepend with xxx directory name
#  lst = [ Wildcard : *.cpp : xxx ] ; -> 'xxx/baz.cpp xxx/baz2.cpp'
#
# This rule is not the same rule from autojam, but that was a good inspiration :-)
rule Wildcard
{
	local files dir sdir wildcards ;

	if $(2) {
		dir = "$(<)/" ;
		wildcards = $(2) ;
	} else {
		dir = "" ;
		wildcards = $(1) ;
	}

	if $(3) {
		sdir = $(3) ;
	} else {
		sdir = "" ;
	}

	files = [ Glob [ FDirName $(SUBDIR) $(dir) ] : $(wildcards) ] ;
	return $(files:BSR=$(sdir)) ;
}

# SymLink [link] : [source] : [opt-path-to-source];
# Creates symbolic link [link] pointing at [source].
# If [opt-path-to-source] is given, [link] will point to [opt-path-to-source]/[source].
#
# Addition of directory option to this rule is needed because of the way how
# 'ln -s' works and how it fits to jam's way of seeing paths. For example,
# setting 'SymLink foo.so : foo.so.2' will make correcty symlink _only_ in
# directory where 'foo.so.2' is built; on other hand if 'foo' is in 'baz' directory
# and jam is called outside of it, link will be 'baz/foo.so -> baz/foo.so.2' which is incorrect;
# linking must be done locally (done via SYMLINKSRCPATH).
rule SymLink
{
	if ! $(LINKCMD) {
		Echo "LINKCMD wasn't defined, $(<) will not be created" ;
		return ;
	}

	Depends $(<) : $(>) ;

	if $(3) {
		SYMLINKSRCPATH on $(<) = $(3) ;
	} else {
		# Can't be empty or SymLink1 will ignore source; also
		# it is set on $(<) since jam only this way see it as valid variable
		SYMLINKSRCPATH on $(<) = "" ;
	}

	SymLink1 $(<) : $(>) ;
}

# FFileName [items] ;
# The same as FDirName (since FDirName correctly construct result if
# ending item is non-dir), but provided for easier navigation.
# In short, return pathed list of items, like: [ FFileName foo baz taz ]
# will be 'foo/baz/taz'. Must be called inside [], as FDirName does.
rule FFileName
{
	return [ FDirName $(<) ] ;
}

# MkDir [directory] ;
# Make a directory and all its parent directories.
# The default MkDir rule in Jambase has problems when paths contains a sequence
# of multiple slashes (ie. bla////fup). We solve these problems and greatly
# simply this rule by using the "mkdir -p" or mkdirs command. Stolen from autojam.
rule MkDir
{
	if ! $(MKDIRS) { 
		Echo "MKDIRS wasn't defined; $(<) will not be created" ;
		return ;
	}

	# Ignore timestamps on directories: we only care if they 
	# exist.
	NoUpdate $(<) ;

	# don't create the dir multiple times
	if ! $($(<)-mkdir) {
		$(<)-mkdir = true ;
		MkDir1 $(<) ;
	}
}

actions SymLink1 
{
	$(RM) "$(<)" && $(LINKCMD) "$(>:D=$(SYMLINKSRCPATH))" "$(<)"
}

actions MkDir1
{
	$(MKDIRS) "$(<)"
}

# Cleandir clean : [directory] ;
# Removes directory in 'Clean clean' fassion
actions piecemeal together existing Cleandir
{
	$(RMDIR_UNSAFE) "$(>)"
}

# Similar to Cleandir, but it will not remove directory
# if it is not empty. Also 'ignore' modifier will notify jam 
# to noy scream if directory is not empty.
actions piecemeal together ignore existing CleandirSafe
{
	$(RMDIR_SAFE) "$(>)"
}

# Copy [target] : [source] ;
actions Copy
{
	$(CP) "$(>)" "$(<)"
}

# Move [target] : [source] ;
actions Move
{
	$(MV) "$(>)" "$(<)"
}