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############################################################-*-Makefile-*-####
# SC - Compile Scala Files
##############################################################################
# $Id$
##############################################################################
# Usage
#
# make sc [target=<target>] {<VARIABLE>=<value>}
#
##############################################################################
# Variables
#
# SC_COMPILER = compiler name, for example SCALAC
# $(SC_COMPILER) = compiler command
# $(SC_COMPILER)_FLAGS = compiler-specific compilation flags
# SC_FLAGS += compilation flags
# SC_CLASSPATH = location of user class files
# SC_SOURCEPATH = location of input source files
# SC_BOOTCLASSPATH = location of bootstrap class files
# SC_EXTDIRS = location of installed extensions
# SC_OUTPUTDIR = directory where to place generated class files
# SC_ENCODING = character encoding used by source files
# SC_SOURCE = version of source code
# SC_TARGET = version of target bytecode
# SC_FILES += files to compile
#
# All variables may have target specific values which override the
# normal value. Those values are specified by variables whose name is
# prefixed with the target name. For example, to override the value of
# the variable SC_CLASSPATH with target LIBRARY, one may define the
# variable LIBRARY_SC_CLASSPATH.
#
##############################################################################
# Examples
#
# Compile file "sources/scala/Predef.scala"
#
# make sc SC_FILES=sources/scala/Predef.scala
#
#
# Compile the whole runtime
#
# make sc target=LIBRARY
#
#
# A Makefile rule that compiles all modified files from the runtime
#
# .latest-library : $(LIBRARY_SC_FILES)
# @$(MAKE) sc target=LIBRARY LIBRARY_SC_FILES='$?'
# touch $@
#
##############################################################################
##############################################################################
# Defaults
SC_COMPILER ?= SCALAC
CYGWIN_PATH ?= $(1)
CYGWIN_FILE ?= $(1)
SCALAC ?= scalac
##############################################################################
# Values
sc_COMPILER = $(call SC_LOOKUP,SC_COMPILER)
sc_compiler = $(call SC_LOOKUP,$(sc_COMPILER))
sc_compiler_flags = $(call SC_LOOKUP,$(sc_COMPILER)_FLAGS)
sc_FLAGS = $(call SC_LOOKUP,SC_FLAGS)
sc_CLASSPATH = $(call SC_LOOKUP,SC_CLASSPATH)
sc_SOURCEPATH = $(call SC_LOOKUP,SC_SOURCEPATH)
sc_BOOTCLASSPATH = $(call SC_LOOKUP,SC_BOOTCLASSPATH)
sc_EXTDIRS = $(call SC_LOOKUP,SC_EXTDIRS)
sc_OUTPUTDIR = $(call SC_LOOKUP,SC_OUTPUTDIR)
sc_ENCODING = $(call SC_LOOKUP,SC_ENCODING)
sc_SOURCE = $(call SC_LOOKUP,SC_SOURCE)
sc_TARGET = $(call SC_LOOKUP,SC_TARGET)
sc_FILES = $(call SC_LOOKUP,SC_FILES)
##############################################################################
# Command
sc += $(sc_compiler)
sc += $(sc_compiler_flags)
sc += $(sc_FLAGS)
sc += $(sc_CLASSPATH:%=-classpath $(call CYGWIN_PATH,%))
sc += $(sc_SOURCEPATH:%=-sourcepath $(call CYGWIN_PATH,%))
sc += $(sc_BOOTCLASSPATH:%=-bootclasspath $(call CYGWIN_PATH,%))
sc += $(sc_EXTDIRS:%=-extdirs $(call CYGWIN_PATH,%))
sc += $(sc_OUTPUTDIR:%=-d $(call CYGWIN_FILE,%))
sc += $(sc_ENCODING:%=-encoding %)
sc += $(sc_SOURCE:%=-source %)
sc += $(sc_TARGET:%=-target:%)
sc += $(sc_FILES:%=$(call CYGWIN_FILE,'%'))
##############################################################################
# Functions
SC_LOOKUP = $(if $($(target)_$(1)),$($(target)_$(1)),$($(1)))
##############################################################################
# Rules
sc :
@[ -d "$(sc_OUTPUTDIR)" ] || $(MKDIR) -p "$(sc_OUTPUTDIR)"
$(strip $(sc))
.PHONY : sc
##############################################################################
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