Initial addition.

This file provides a framework to easily create wrappers to run Java
environments (either compilers or virtual machines) installed under
${PREFIX}/java/<implementation>.  These wrappers hide the complexity
of having to modify the path, unlimit resources or to set a correct
CLASSPATH for the program to run.

mk/java-env.mk

@@ -0,0 +1,74 @@
+# $NetBSD: java-env.mk,v 1.1 2004/05/22 21:13:17 jmmv Exp $
+#
+# This Makefile fragment handles Java wrappers and is meant to be included
+# by packages that provide a Java build-time and/or run-time environment.
+#
+# The following variables can be defined in package Makefiles to tune the
+# behavior of this file:
+#
+#	JAVA_CLASSPATH	Classpath that will be prepended on all invocations
+#			to this implementation.  Optional.
+#
+#	JAVA_HOME	Path to the directory holding the Java implementation.
+#			Required.
+#
+#	JAVA_NAME	Base name of the Java implementation.  This will be
+#			used as part of wrappers' names.  Required.
+#
+#	JAVA_UNLIMIT	List of resources to be unlimited at runtime.
+#			Can include any of cmdsize, datasize and stacksize.
+#			Optional.
+#
+#	JAVA_WRAPPERS	List of wrappers to be created under ${PREFIX}/bin,
+#			pointing to binaries under ${JAVA_HOME}/bin.  The
+#			names must match files in the later directory.
+#			Required (if empty, the inclusion of this file is
+#			useless).
+#
+
+.if !defined(JAVA_ENV_MK)
+JAVA_ENV_MK=		# defined
+
+JAVA_NAME?=		# undefined
+JAVA_HOME?=		# undefined
+JAVA_CLASSPATH?=	# empty
+JAVA_UNLIMIT?=		# empty
+JAVA_WRAPPERS?=		# empty
+
+.for w in ${JAVA_WRAPPERS}
+
+post-build:		${WRKDIR}/${w}
+
+.PHONY:			install-java-wrapper-${w}
+post-install:		install-java-wrapper-${w}
+
+.  if !target(${WRKDIR}/${w})
+${WRKDIR}/${w}:
+	@${ECHO} 'Generating ${w} wrapper...'
+	@${ECHO} '#! ${SH}' >${WRKDIR}/${w}
+	@${ECHO} 'PATH=${JAVA_HOME}/bin:$${PATH}; export PATH' >>${WRKDIR}/${w}
+	@${ECHO} 'JAVA_HOME=${JAVA_HOME}; export JAVA_HOME' >>${WRKDIR}/${w}
+	@${ECHO} 'JVM_HOME=${JAVA_HOME}; export JVM_HOME' >>${WRKDIR}/${w}
+.    if !empty(JAVA_CLASSPATH)
+	@${ECHO} 'CLASSPATH=${JAVA_CLASSPATH}:$${CLASSPATH}; export CLASSPATH' \
+		>>${WRKDIR}/${w}
+.    endif
+.    for f in ${JAVA_UNLIMIT}
+	@${ECHO} '${ULIMIT_CMD_${f}}' >>${WRKDIR}/${w}
+.    endfor
+.    undef f
+	@${ECHO} '${JAVA_HOME}/bin/${w} "$$@"' >>${WRKDIR}/${w}
+.  endif
+
+install-java-wrapper-${w}:
+	${INSTALL_SCRIPT} ${WRKDIR}/${w} ${PREFIX}/bin/${JAVA_NAME}-${w}
+
+.endfor
+.undef w
+
+# Handle the ${PREFIX}/java shared directory automatically.
+USE_PKGINSTALL=		YES
+MAKE_DIRS+=		${PREFIX}/java
+PRINT_PLIST_AWK+=	/^@dirrm java$$/ { next; }
+
+.endif	# JAVA_ENV_MK