#
# Copyright (c) 2004, 2012, Oracle and/or its affiliates. All rights reserved.
#
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions
# are met:
#
#   - Redistributions of source code must retain the above copyright
#     notice, this list of conditions and the following disclaimer.
#
#   - Redistributions in binary form must reproduce the above copyright
#     notice, this list of conditions and the following disclaimer in the
#     documentation and/or other materials provided with the distribution.
#
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#     contributors may be used to endorse or promote products derived
#     from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
# IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
# THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
# PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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# LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
# NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
# SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
#

########################################################################
#
# Sample GNU Makefile for building
#
#  Example uses:    
#       gnumake JDK=<java_home> OSNAME=solaris [OPT=true] [LIBARCH=sparc]
#       gnumake JDK=<java_home> OSNAME=solaris [OPT=true] [LIBARCH=sparcv9]
#       gnumake JDK=<java_home> OSNAME=linux   [OPT=true]
#       gnumake JDK=<java_home> OSNAME=win32   [OPT=true]
#
########################################################################

# Source lists
LIBNAME=java_crw_demo
SOURCES=java_crw_demo.c

# Solaris Sun C Compiler Version 5.5
ifeq ($(OSNAME), solaris)
    # Sun Solaris Compiler options needed
    COMMON_FLAGS=-mt -KPIC
    # Options that help find errors
    COMMON_FLAGS+= -Xa -v -xstrconst -xc99=%none
    # Check LIBARCH for any special compiler options
    LIBARCH=$(shell uname -p)
    ifeq ($(LIBARCH), sparc)
        COMMON_FLAGS+=-xarch=v8 -xregs=no%appl
    endif
    ifeq ($(LIBARCH), sparcv9)
        COMMON_FLAGS+=-xarch=v9 -xregs=no%appl
    endif
    ifeq ($(OPT), true)
        CFLAGS=-xO2 $(COMMON_FLAGS) 
    else
        CFLAGS=-g $(COMMON_FLAGS)
    endif
    # Object files needed to create library
    OBJECTS=$(SOURCES:%.c=%.o)
    # Library name and options needed to build it
    LIBRARY=lib$(LIBNAME).so
    LDFLAGS=-z defs -ztext
    # Libraries we are dependent on
    LIBRARIES=-lc
    # Building a shared library
    LINK_SHARED=$(LINK.c) -G -o $@
endif

# Linux GNU C Compiler
ifeq ($(OSNAME), linux)
    # GNU Compiler options needed to build it
    COMMON_FLAGS=-fno-strict-aliasing -fPIC -fno-omit-frame-pointer
    # Options that help find errors
    COMMON_FLAGS+= -W -Wall  -Wno-unused -Wno-parentheses
    ifeq ($(OPT), true)
        CFLAGS=-O2 $(COMMON_FLAGS) 
    else
        CFLAGS=-g $(COMMON_FLAGS) 
    endif
    # Object files needed to create library
    OBJECTS=$(SOURCES:%.c=%.o)
    # Library name and options needed to build it
    LIBRARY=lib$(LIBNAME).so
    LDFLAGS=-Wl,-soname=$(LIBRARY) -static-libgcc
    # Libraries we are dependent on
    LIBRARIES=-lc
    # Building a shared library
    LINK_SHARED=$(LINK.c) -shared -o $@
endif

# Windows Microsoft C/C++ Optimizing Compiler Version 12
ifeq ($(OSNAME), win32)
    CC=cl
    # Compiler options needed to build it
    COMMON_FLAGS=-Gy -DWIN32
    # Options that help find errors
    COMMON_FLAGS+=-W0 -WX
    ifeq ($(OPT), true)
        CFLAGS= -Ox -Op -Zi $(COMMON_FLAGS) 
    else
        CFLAGS= -Od -Zi $(COMMON_FLAGS) 
    endif
    # Object files needed to create library
    OBJECTS=$(SOURCES:%.c=%.obj)
    # Library name and options needed to build it
    LIBRARY=$(LIBNAME).dll
    LDFLAGS=
    # Libraries we are dependent on
    LIBRARIES=
    # Building a shared library
    LINK_SHARED=link -dll -out:$@
endif

# Common -I options
CFLAGS += -I.
CFLAGS += -I$(JDK)/include -I$(JDK)/include/$(OSNAME)

# Default rule (build both native library and jar file)
all: $(LIBRARY)

# Build native library
$(LIBRARY): $(OBJECTS)
	$(LINK_SHARED) $(OBJECTS) $(LIBRARIES)

# Cleanup the built bits
clean:
	rm -f -r classes
	rm -f $(LIBRARY) $(OBJECTS)

# Compilation rule only needed on Windows
ifeq ($(OSNAME), win32)
%.obj: %.c
	$(COMPILE.c) $<
endif

