Apologies in advance for the long post.
I'm currently using a Makefile to build my shared library. Pursuant to the
R-exts manual, I'd like to switch to a Makevars file or a configure file if
necessary.
Having never used these types of make utilities before, I'm a bit lost.
My package is quite simple. It only has one source file and one header:
excelpoi.cpp
excelpoi.h
The reason I need help with Makevars is because it needs jni.h from the
user's JAVA_HOME/include and jni_md.h from the user's
JAVA_HOME/include/OS_TYPE directory.
In addition, it needs libjvm.so from the user's
JAVA_HOME/jre/lib/ARCH/client directory.
I've looked at the SJava package with the idea of using a similar configure
script, but I was hoping I could just get by with a Makevars file rather
than a configure script.
I would appreciate any pointers, as I'm not really sure exactly where to
begin.
I suppose if I can find the values of JAVA_HOME, ARCH, and OS_TYPE, then I
can fill in the values I need using PKG_LIBS and PKG_INCLUDE in the Makevars
file.
below is the makefile I'm currently using for your reference.
Thanks in advance,
Whit
<Makefile>
archExpr = case "`uname -m`" in \
i[3-6]86 | ia32) \
echo i386 \
;; \
sparc*) \
echo sparc \
;; \
*) \
uname -m \
;; \
esac
ARCH = $(shell $(archExpr) )
JAVA_HOME=/opt/blackdown-jdk-1.4.1/
INCLUDES=-I$(JAVA_HOME)/include -I$(JAVA_HOME)/include/linux
-I/usr/local/lib/R/include
LIBS=-L$(JAVA_HOME)/jre/lib/$(ARCH)/client -ljvm
# The recommended c compiler flags
CFLAGS=-D_REENTRANT -D_GNU_SOURCE
all: excelpoi.so
excelpoi.so: excelpoi.cpp excelpoi.h
$(CXX) -O2 $(CFLAGS) $(INCLUDES) $(LIBS) -shared -fPIC -o $@ $<
</Makefile>
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