TARGET:=target
SRC:=src/main/java
include $(SRC)/org/xerial/snappy/VERSION

ifndef JAVA_HOME
$(error Set JAVA_HOME environment variable)
endif


JAVA  := "$$JAVA_HOME/bin/java"
JAVAC := "$$JAVA_HOME/bin/javac" 
JAVAH := "$$JAVA_HOME/bin/javah"

OSINFO_CLASS := org.xerial.snappy.OSInfo
OSINFO_PROG := lib/org/xerial/snappy/OSInfo.class

## building OSInfo.java 
#$(info compiling OSInfo.java)
#$(shell mkdir -p lib)
#$(shell $(JAVAC) src/main/java/org/xerial/snappy/OSInfo.java -d lib)

OS_NAME := $(shell $(JAVA) -cp lib $(OSINFO_CLASS) --os)
OS_ARCH := $(shell $(JAVA) -cp lib $(OSINFO_CLASS) --arch)
LIB_FOLDER := $(shell $(JAVA) -cp lib $(OSINFO_CLASS))

# Windows uses different path separators
ifeq ($(OS_NAME),Windows)
	sep := ;
else
	sep := :
endif

snappy := snappy-$(VERSION)


jni_md := $(shell find -L "$(JAVA_HOME)" -name jni_md.h)
ifneq ($(jni_md),)
jni_include := $(shell dirname "$(jni_md)")
endif


# os=Default is meant to be generic unix/linux

known_os_archs := Linux-i386 Linux-amd64 Linux-arm Linux-armhf Mac-i386 Mac-x86_64 Windows-x86 Windows-amd64
os_arch := $(OS_NAME)-$(OS_ARCH)

ifeq (,$(findstring $(strip $(os_arch)),$(known_os_archs)))
  os_arch := Default
endif

# cross-compilation toolchain prefix (e.g. "arm-linux-gnueabi-")
CROSS_PREFIX :=

Default_CXX          := $(CROSS_PREFIX)g++
Default_STRIP        := $(CROSS_PREFIX)strip
Default_CXXFLAGS     := -I$(JAVA_HOME)/include -Ilib/inc_mac -O2 -fPIC -fvisibility=hidden
Default_LINKFLAGS    := -shared -static
Default_LIBNAME      := libsnappyjava.so
Default_SNAPPY_FLAGS := 

Linux-i386_CXX       := $(CROSS_PREFIX)g++
Linux-i386_STRIP     := $(CROSS_PREFIX)strip
Linux-i386_CXXFLAGS  := -include lib/inc_linux/jni_md.h -I$(JAVA_HOME)/include -O2 -fPIC -fvisibility=hidden -m32
Linux-i386_LINKFLAGS := -shared -static-libgcc -static-libstdc++
Linux-i386_LIBNAME   := libsnappyjava.so
Linux-i386_SNAPPY_FLAGS:= 

Linux-amd64_CXX       := $(CROSS_PREFIX)g++ 
Linux-amd64_STRIP     := $(CROSS_PREFIX)strip
Linux-amd64_CXXFLAGS  := -include lib/inc_linux/jni_md.h -I$(JAVA_HOME)/include -O2 -fPIC -fvisibility=hidden -m64
Linux-amd64_LINKFLAGS := -shared -static-libgcc 
Linux-amd64_LIBNAME   := libsnappyjava.so
Linux-amd64_SNAPPY_FLAGS  := 

# '-include lib/inc_linux/jni_md.h' is used to force the use of our version,
# which defines JNIEXPORT differently; otherwise, since OpenJDK includes
# jni_md.h in same directory as jni.h, the include path is ignored when
# jni_md.h is included from jni.h

Linux-arm_CXX       := $(CROSS_PREFIX)g++
Linux-arm_STRIP     := $(CROSS_PREFIX)strip
Linux-arm_CXXFLAGS  := -include lib/inc_linux/jni_md.h -I$(JAVA_HOME)/include -O2 -fPIC -fvisibility=hidden -mfloat-abi=softfp
Linux-arm_LINKFLAGS := -shared -static-libgcc
Linux-arm_LIBNAME   := libsnappyjava.so
Linux-arm_SNAPPY_FLAGS:= 

Linux-armhf_CXX       := $(CROSS_PREFIX)g++
Linux-armhf_STRIP     := $(CROSS_PREFIX)strip
Linux-armhf_CXXFLAGS  := -include lib/inc_linux/jni_md.h -I$(JAVA_HOME)/include -O2 -fPIC -fvisibility=hidden -mfloat-abi=hard
Linux-armhf_LINKFLAGS := -shared -static-libgcc
Linux-armhf_LIBNAME   := libsnappyjava.so
Linux-armhf_SNAPPY_FLAGS:= 

Mac-i386_CXX       := g++ -arch $(OS_ARCH) 
Mac-i386_STRIP     := strip -x
Mac-i386_CXXFLAGS  := -Ilib/inc_mac -I$(JAVA_HOME)/include -O2 -fPIC -mmacosx-version-min=10.4 -fvisibility=hidden
Mac-i386_LINKFLAGS := -dynamiclib -static-libgcc
Mac-i386_LIBNAME   := libsnappyjava.jnilib
Mac-i386_SNAPPY_FLAGS  :=

Mac-x86_64_CXX       := g++ -arch $(OS_ARCH) 
Mac-x86_64_STRIP     := strip -x
Mac-x86_64_CXXFLAGS  := -Ilib/inc_mac -I$(JAVA_HOME)/include -O2 -fPIC -mmacosx-version-min=10.5 -fvisibility=hidden
Mac-x86_64_LINKFLAGS := -dynamiclib -static-libgcc 
Mac-x86_64_LIBNAME   := libsnappyjava.jnilib 
Mac-x86_64_SNAPPY_FLAGS  := 

Windows-x86_CXX          := $(CROSS_PREFIX)g++
Windows-x86_STRIP        := $(CROSS_PREFIX)strip
Windows-x86_CXXFLAGS     := -Ilib/inc_win -O2 
Windows-x86_LINKFLAGS    := -Wl,--kill-at -shared -static
Windows-x86_LIBNAME      := snappyjava.dll
Windows-x86_SNAPPY_FLAGS := 

Windows-amd64_CXX          := $(CROSS_PREFIX)g++
Windows-amd64_STRIP        := $(CROSS_PREFIX)strip
Windows-amd64_CXXFLAGS     := -Ilib/inc_win -O2 
Windows-amd64_LINKFLAGS    := -Wl,--kill-at -shared -static 
Windows-amd64_LIBNAME      := snappyjava.dll
Windows-amd64_SNAPPY_FLAGS := 


CXX        := $($(os_arch)_CXX)
STRIP     := $($(os_arch)_STRIP)
CXXFLAGS    := $($(os_arch)_CXXFLAGS) 
LINKFLAGS := $($(os_arch)_LINKFLAGS) 
LIBNAME   := $($(os_arch)_LIBNAME)
SNAPPY_FLAGS := $($(os_arch)_SNAPPY_FLAGS)



CXXFLAGS := $(CXXFLAGS) -Ilib/include  
ifneq ($(jni_include),)
CXXFLAGS := $(CXXFLAGS) -I"$(jni_include)"
endif