+#
+# Copyright (C) 2019,2022 Michael Zucchi
+#
+# This is the copyright for java.make
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+# GNU General Public License for more details.
+#
+# You should have received a copy of the GNU General Public License
+# along with this program. If not, see <http://www.gnu.org/licenses/>.
+#
+
+# General purpose modular java makefile that supports native library
+# compilation directly. Non-recrusve implementation.
+#
+# Uses metamake programming with some file conventions to implement
+# auto-make-like features.
+
+# Define modules
+# --------------
+# java_MODULES list of java modules to compile. The sources must
+# exist in src/<module>/classes. Resource files are
+# stored in src/<module>/classes. Source-code
+# generators must exist in src/<module>/gen. Native
+# libraries must exist in src/<module>/jni.
+
+# native_MODULES list of native-only "modules".
+
+
+# Global variables
+
+# JAVA_HOME location of jdk.
+# JAVAC java compiler to use. Default is 'javac' on the path.
+# JAVACFLAGS javac flags applied to all invocations.
+# JAR jar command.
+# JARFLAGS jar flags
+# JMOD jmod command.
+# JMODFLAGS jmod flags.
+# JAVAFLAGS java flags for run targets
+
+# Module specific variables
+
+# <module>_JDEPMOD Lists modules which this one depends on.
+
+# <module>_JAVACFLAGS Extra module-specific flags for each command.
+# <module>_JARFLAGS
+# <module>_JMODFLAGS
+
+# all paths are relative to the root package name
+
+# <module>_JAVA Java sources. If not set it is found from src/<module>/classes/(*.java)
+# <module>_RESOURCES .jar resources. If not set it is found from src/<module>/classes/(not *.java)
+# <module>_JAVA_GENERATED Java generated sources.
+# <module>_RESOURCES_GENERATED Java generated sources.
+
+# Variables for use in fragments
+
+# gen.make and jni.make can additionally make use of these variables
+
+# <module>_gendir Location for files used in Java generation process (per project).
+# <module>_genjavadir Location where _JAVA_GENERATED .java files will be created (per project).
+# <module>_objdir Location for c objects (per target).
+# <module>_incdir Location for output includes, .jmod staging.
+# <module>_libdir Location for output libraries, .jmod staging. May point to _bindir.
+# <module>_bindir Location for output commands, .jmod staging.
+
+# Define libraries
+# ----------------
+
+# Each module can define one or more native libraries.
+
+# These are compiled after the java sources have been compiled as that
+# process also generates any native binding headers.
+
+# <module>_NATIVE_LIBRARIES list of libraries to build.
+# library names match System.loadLibrary().
+
+# Global variables
+
+# <target>_LDFLAGS
+# <target>_LDLIBS
+# <target>_CPPFLAGS
+# <target>_CFLAGS
+# <target>_CC
+# <target>_CXXFLAGS
+# <target>_CXX
+# SO shared library suffix
+# LIB shared library prefix
+
+# Utility functions
+#
+# $(call library-path,<module>,<libname>) will resolve to the library file name.
+
+# Per library variables.
+
+# <library>_SOURCES .c source files for library. Paths are relative to src/<module>/native.
+# <library>_CXXSOURCES .c source files for library. Paths are relative to src/<module>/native.
+# <library>_HEADERS header files for install/jmod
+# <library>_COMMANDS commands/bin/scripts for install/jmod
+
+# <library>_LDFLAGS link flags
+# <library>_LIBADD extra objects to add to link line
+# <library>_LDLIBS link libraries
+# <library>_CPPFLAGS c and c++ pre-processor flags. "-Isrc/<module>/jni -Ibin/include/<module>" is implicit.
+# <library>_CCFLAGS c compiler flags
+# <library>_CXXFLAGS c++ compiler flags
+
+# <library>_DEPENDENCIES A list of other objects on which this library depends before linking.
+
+# .c and .cc files have dependencies automatically generated
+
+# Targets
+# -------
+
+# make gen only generate java sources
+# make clean rm -rf bin
+# make dist create dist tar in bin/
+# make | make jar make all jars and jmods
+
+# Outputs
+# -------
+
+# All intermediate and output files are written to bin/
+
+# This layout is enforced by javac
+# bin/include/<module>/ .h files from javac -h
+# bin/modules/<module>/ .class files from javac
+
+# This layout is convenient for netbeans
+# bin/gen/<module>/gen/ .c, exe files for generator free use
+# bin/gen/<module>/classes/ .java files from generator <module>_JAVA_GENERATED
+
+# Working files
+# bin/status/ marker files for makefile
+
+# bin/<module>/<target>/lib .so librareies for jmod <module>_LIBRARIES = libname
+# bin/<module>/<target>/obj .o, .d files for library <libname>_SOURCES
+# bin/<module>/<target>/include .h files for jmod <libname>_HEADERS
+# bin/<module>/<target>/<module>.jmod .jmod module
+
+# Output files
+# bin/<target>/lib/ modular jar files and shared libraries for GNU/linux dev
+# bin/<target>/include/ header files for exported shared libraries
+# bin/<target>/bin/ shared libraries for microsoft dev
+# bin/<target>/jmods/ jmod files for 'jlink' use.
+
+# ######################################################################
+
+all_MODULES = $(java_MODULES) $(native_MODULES)
+
+E:=
+S:=$(E) $(E)
+SO=$($(TARGET)_SO)
+LIB=$($(TARGET)_LIB)
+
+# Define some useful variables before including fragments
+define common_variables=
+$1_gendir:=bin/gen/$1/gen
+$1_genjavadir:=bin/gen/$1/classes
+$1_objdir:=bin/$1/$(TARGET)/obj
+$1_incdir:=bin/$1/$(TARGET)/include
+$1_libdir:=$$(if $$(filter windows-%,$(TARGET)),bin/$1/$(TARGET)/bin,bin/$1/$(TARGET)/lib)
+$1_bindir:=bin/$1/$(TARGET)/bin
+endef
+
+define java_variables=
+ifndef $1_JAVA
+$1_JAVA := $$(shell cd src/$1/classes && find * -type f -name '*.java')
+endif
+ifndef $1_RESOURCES
+$1_RESOURCES := $$(shell cd src/$1/classes && find * -type f \! -name '*.java')
+endif
+endef
+
+java_libdir:=$(if $(filter windows-%,$(TARGET)),bin/$(TARGET)/bin,bin/$(TARGET)/lib)
+java_bindir:=bin/$(TARGET)/bin
+java_jardir:=bin/$(TARGET)/lib
+java_incdir:=bin/$(TARGET)/include
+java_jmoddir:=bin/$(TARGET)/jmods
+
+$(foreach module,$(java_MODULES) $(native_MODULES),$(eval $(call common_variables,$(module))))
+$(foreach module,$(java_MODULES),$(eval $(call java_variables,$(module))))
+
+# ######################################################################
+
+all:
+jar:
+gen:
+
+.PHONY: all clean jar gen $(java_MODULES) dist
+clean:
+ rm -rf bin
+
+# dist things
+dist_TAR = bin/$(dist_NAME)-$(dist_VERSION).tar.gz
+dist_FILES = config.make.in java.make Makefile src $(dist_EXTRA)
+
+# Gen is things that go into the jar (sources and resources)
+include $(wildcard $(all_MODULES:%=src/%/gen/gen.make))
+# Native is things that go into the sdk/jmod
+include $(wildcard $(all_MODULES:%=src/%/native/native.make))
+
+# ######################################################################
+
+# create module depencies
+# variables:
+# <module>_sdk is the target location of an expanded 'sdk' for this module
+# it resides in a common location bin/<target>/
+# <module>_jmod is the target location of a staging area for jmod files
+# is resides in a per-module lcoation bin/<module>/<target>/
+# <module>_java is all the targets that will cause the invocation of javac
+# it includes the module source, generated sources, and sentinals for generated sources
+
+# targets:
+# bin/status/<module>.depjava marks all source/generated sources are ready/updated
+# bin/status/<module>.depjar all compiled class files and resources are ready/updated
+# bin/status/<module>.sdk all files are available in bin/<target> as if it was an installed image
+
+define module_vars=
+$1_sdk := $(addprefix $(java_bindir)/,$($1_COMMANDS)) $(addprefix $(java_libdir)/,$($1_LIBRARIES)) $($1_NATIVE_LIBRARIES:%=$(java_libdir)/lib%.so)
+$1_jmod := $(addprefix $($1_bindir)/,$($1_COMMANDS)) $(addprefix $($1_libdir)/,$($1_LIBRARIES)) $($1_NATIVE_LIBRARIES:%=$($1_libdir)/lib%.so)
+$1_java :=$($1_JAVA:%=src/$1/classes/%) $($1_JAVA_GENERATED:%=$($1_genjavadir)/%)
+$1_resources:= $($1_RESOURCES:%=bin/modules/$1/%) $($1_RESOURCES_GENERATED:%=bin/modules/$1/%)
+$1_depjava := $($1_API:%=bin/status/$1-%.export) $(patsubst %,bin/status/%.classes, $(filter $($1_JDEPMOD),$(java_MODULES)))
+
+bin/status/$1.depjava: $$($1_java) $$($1_depjava)
+ @install -d $$(@D)
+ touch $$@
+bin/status/$1.depjar: bin/status/$1.classes $$($1_resources)
+ @install -d $$(@D)
+ touch $$@
+bin/status/$1.depmod: bin/status/$1.classes $$($1_resources) $$($1_jmod)
+ @install -d $$(@D)
+ touch $$@
+bin/status/$1.sdk: $(java_jardir)/$1.jar
+jar: $(java_jardir)/$1.jar
+gen: bin/status/$1.depjava
+$1 all: $(java_jardir)/$1.jar $(java_jmoddir)/$1.jmod
+
+$1-sdk sdk: bin/status/$1.sdk
+
+bin/status/$1.sdk: $$($1_sdk) $$($1_jmod)
+ @install -d $$(@D)
+ touch $$@
+
+endef
+
+#$(foreach m,$(all_MODULES),$(info $(call module_vars,$m)))
+$(foreach m,$(all_MODULES),$(eval $(call module_vars,$m)))
+
+# ######################################################################
+# notzed.nativez export-api
+# ######################################################################
+
+define api_targets=
+bin/status/$1-$2.export: src/$1/gen/$2.api src/$1/gen/$2.h
+bin/status/$1-$2.export:
+ mkdir -p bin/gen/$1/gen bin/status
+ $(NATIVEZ_HOME)/bin/export-api \
+ -w bin/gen/$1/gen -d bin/gen/$1/classes $($1_APIFLAGS) $($1_$2_APIFLAGS) src/$1/gen/$2.api
+ touch $$@
+
+bin/status/$1-$2.export.d:
+ @$(NATIVEZ_HOME)/bin/export-api -M -MT "$$(@:.d=) $$@" -MF $$@ \
+ -w bin/gen/$1/gen -d bin/gen/$1/classes $($1_APIFLAGS) $($1_$2_APIFLAGS) src/$1/gen/$2.api 2>/dev/null
+
+$(if $(filter clean dist gen,$(MAKECMDGOALS)),,-include bin/status/$1-$2.export.d)
+endef
+
+$(foreach m,$(all_MODULES),$(foreach a,$($m_API),$(eval $(call api_targets,$m,$a))))
+
+# ######################################################################
+# Java
+# ######################################################################
+
+# Build targets for java modules
+
+define java_targets=
+
+# Create (modular) jar
+$(java_jardir)/$1.jar: bin/status/$1.depjar
+ @install -d $$(@D)
+ $(JAR) cf $$@ \
+ $(JARFLAGS) $$($(1)_JARFLAGS) \
+ -C bin/modules/$(1) .
+
+# Create a jmod
+$(java_jmoddir)/$1.jmod: bin/status/$1.depmod
+ rm -f $$@
+ @install -d $$(@D)
+ $$(JMOD) create \
+ $$(JMODFLAGS) $$($(1)_JMODFLAGS) \
+ --target-platform $(TARGET) \
+ --class-path bin/modules/$(1) \
+ $$(if $$(wildcard bin/$(1)/$(TARGET)/include),--header-files bin/$(1)/$(TARGET)/include) \
+ $$(if $$(wildcard src/$(1)/legal),--legal-notices src/$(1)/legal) \
+ $$(if $$(wildcard bin/$(1)/$(TARGET)/bin),--cmds bin/$(1)/$(TARGET)/bin) \
+ $$(if $$(wildcard bin/$(1)/$(TARGET)/lib),--libs bin/$(1)/$(TARGET)/lib) \
+ $$@
+
+# Create an IDE source zip, paths have to match --module-source-path
+$(java_jardir)/$1-sources.zip: bin/status/$1.depjar
+ @install -d $$(@D)
+ $(JAR) -c -f $$@ -M \
+ $$($1_JAVA:%=-C src/$1/classes %) \
+ $$($1_JAVA_GENERATED:%=-C bin/gen/$1/classes %)
+
+# resources
+bin/modules/$1/%: src/$1/classes/%
+ install -vD $$< $$@
+bin/modules/$1/%: $($1_genjavadir)/%
+ install -vD $$< $$@
+
+# Compile module.
+bin/status/$1.classes: bin/status/$1.depjava
+ @install -d $$(@D)
+ $(JAVAC) \
+ --module-source-path "src/*/classes:bin/gen/*/classes" \
+ $(if $(JAVAMODPATH),--module-path $(subst $(S),:,$(JAVAMODPATH))) \
+ $(JAVACFLAGS) $($1_JAVACFLAGS) \
+ -d bin/modules \
+ -m $1 \
+ $$($1_JAVA:%=src/$1/classes/%) \
+ $$($1_JAVA_GENERATED:%=bin/gen/$1/classes/%)
+ touch $$@
+endef
+
+#$(foreach module,$(java_MODULES),$(info $(call java_targets,$(module))))
+$(foreach module,$(java_MODULES),$(eval $(call java_targets,$(module))))
+
+# ######################################################################
+
+# setup run-* targets
+define run_targets=
+run-$1/$2: bin/status/$1.sdk $($1_JDEPMOD:%=bin/status/%.sdk)
+ LD_LIBRARY_PATH=$(FFMPEG_HOME)/lib \
+ $(JAVA) \
+ $(if $(strip $(JAVAMODPATH) $($1_JAVAMODPATH)),--module-path $(subst $(S),:,$(strip $(JAVAMODPATH) $($1_JAVAMODPATH)))) \
+ $(JMAINFLAGS) $($1_JMAINFLAGS) \
+ -m $1/$2 \
+ $(ARGV)
+.PHONY: run-$1/$2
+endef
+
+#$(foreach module,$(java_MODULES),$(foreach main,$($(module)_JMAIN),$(info $(call run_targets,$(module),$(main)))))
+$(foreach module,$(java_MODULES),$(foreach main,$($(module)_JMAIN),$(eval $(call run_targets,$(module),$(main)))))
+
+# ######################################################################
+# C and c++ native library support
+# ######################################################################
+
+define native_library=
+# Rule for library $$2 in module $$1
+$2_OBJS = $(patsubst %.c, $($1_objdir)/%.o, $($2_SOURCES)) \
+ $(patsubst %.cc, $($1_objdir)/%.o, $($2_CXXSOURCES))
+$2_SRCS = $(addprefix src/$1/native/,$($2_SOURCES))
+$2_SO = $($1_libdir)/$(LIB)$2$(SO)
+
+# Copy anything from staging area for jmods bin/module/<target>/* to sdk area bin/<target>/*
+$(java_libdir)/%: $($(1)_libdir)/%
+ @install -d $$(@D)
+ ln -fs $$(abspath $$<) $$@
+$(java_bindir)/%: $($(1)_bindir)/%
+ @install -d $$(@D)
+ ln -fs $$(abspath $$<) $$@
+$(java_incdir)/%: $($(1)_incdir)/%
+ @install -d $$(@D)
+ ln -fs $$(abspath $$<) $$@
+
+$($1_libdir)/$(LIB)$2$(SO): $$($2_OBJS) $($2_LIBADD) $($2_DEPENDENCIES)
+ @install -d $$(@D)
+ $($(TARGET)_CC) -o $$@ -shared \
+ $($(TARGET)_LDFLAGS) $($2_LDFLAGS) $$($2_OBJS) $($2_LIBADD) $($(TARGET)_LDLIBS) $($2_LDLIBS)
+
+$($1_objdir)/%.o: src/$1/native/%.c
+ @install -d $$(@D)
+ $($(TARGET)_CC) -Isrc/$1/native -Ibin/include/$1 \
+ $($(TARGET)_CPPFLAGS) $($2_CPPFLAGS) \
+ $($(TARGET)_CFLAGS) $($2_CFLAGS) -c -o $$@ $$<
+
+$($1_objdir)/%.o: src/$1/native/%.cc
+ @install -d $$(@D)
+ $($(TARGET)_CXX) -Isrc/$1/native -Ibin/include/$1 \
+ $($(TARGET)_CPPFLAGS) $($2_CPPFLAGS) \
+ $($(TARGET)_CXXFLAGS) $($2_CXXFLAGS) -c -o $$@ $$<
+
+# auto-dependencies for c files
+$($1_objdir)/%.d: src/$1/native/%.c
+ @install -d $$(@D)
+ @rm -f $$@
+ @$($(TARGET)_CC) -MM -MT "$$(@:.d=.o) $$@" -Isrc/$1/jni -Ibin/include/$1 \
+ $($(TARGET)_CPPFLAGS) $($2_CPPFLAGS) $$< -o $$@ 2>/dev/null
+
+# auto-dependencies for c++ files
+$($1_objdir)/%.d: src/$1/native/%.cc
+ @install -d $$(@D)
+ @rm -f $$@
+ @$($(TARGET)_CXX) -MM -MT "$$(@:.d=.o) $$@" -Isrc/$1/jni -Ibin/include/$1 \
+ $($(TARGET)_CPPFLAGS) $($2_CPPFLAGS) $$< -o $$@ 2>/dev/null
+
+$(if $(filter clean dist gen,$(MAKECMDGOALS)),,-include $$($2_OBJS:.o=.d))
+endef
+
+#$(foreach module,$(all_MODULES),$(foreach library,$($(module)_NATIVE_LIBRARIES),$(info $(call native_library,$(module),$(library)))))
+$(foreach module,$(all_MODULES),$(foreach library,$($(module)_NATIVE_LIBRARIES),$(eval $(call native_library,$(module),$(library)))))
+
+# ######################################################################
+
+dist:
+ @install -d bin
+ tar cfz bin/$(dist_NAME)-$(dist_VERSION).tar.gz \
+ --transform=s,^,$(dist_NAME)-$(dist_VERSION)/, \
+ $(dist_FILES)