| 1 | Just-JNI (call into Java from Perl only) |
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| 2 | ---------------------------------------- |
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| 3 | |
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| 4 | This has been tested with: |
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| 5 | |
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| 6 | Debian GNU/Linux 2.2 i386, perl 5.6.0, Kaffe (CVS, 2000-12-05 or later) |
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| 7 | RedHat 6.1, perl-5.00503-6 (RedHat RPM), IBM JDK 1.1.8 |
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| 8 | Debian 2.1 SPARC, Perl 5.005_60, JDK 1.2 beta (crashes with AWT, though) |
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| 9 | Windows NT 4.0 SP4, ActivePerl 519, JDK 1.1.8, Visual C++ |
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| 10 | Solaris 7, Perl 5.005_03, JDK 1.1.6, GCC 2.8.1 |
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| 11 | |
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| 12 | Solaris 7 Note (this probably applies to all native thread situations): |
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| 13 | |
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| 14 | Native threads were tricky. I had to build my own Perl, configured with: |
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| 15 | |
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| 16 | sh Configure -Dprefix=/opt/perl5.005 -Duseshrplib -Doptimize=-g \ |
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| 17 | -Uusemymalloc -D cc=gcc -Dusethreads -d |
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| 18 | |
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| 19 | When Configure let me edit config.sh, I changed libs to: |
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| 20 | |
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| 21 | libs='-lthread -lsocket -lnsl -ldl -lm -lposix4 -lpthread -lc -lcrypt' |
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| 22 | |
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| 23 | The leading -lthread is the only thing I had to add. |
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| 24 | |
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| 25 | Kaffe Note: |
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| 26 | |
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| 27 | I believe that Kaffe with JIT enabled will likely be problematic. I had a |
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| 28 | lot of trouble with it, that simply went away with interpreter-based Kaffe. |
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| 29 | FWIW, here's how I configured Kaffe: |
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| 30 | |
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| 31 | env AM_CPPFLAGS=-DDEBUG CFLAGS="-O0 -ggdb" ./configure --disable-gcj \ |
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| 32 | --with-engine=intrp |
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| 33 | |
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| 34 | Likely you don't need all that debugging stuff. |
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| 35 | |
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| 36 | Also, when I build perl, I do this, to be on the safe side. I was worried |
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| 37 | about thread interaction, but realized there was no need to build threaded |
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| 38 | perl, but I thought that the perl code should probably be reentrant, so, I |
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| 39 | did this: |
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| 40 | |
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| 41 | sh ./Configure -Dcc=gcc -Doptimize='-D_REENTRANT -DDEBUGGING -ggdb' \ |
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| 42 | -Dlibperl='libperl.so' -Duseshrplib='true' |
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| 43 | |
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| 44 | Again, you likely don't need the debugging flags. |
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| 45 | |
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| 46 | |
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| 47 | How do I do this crazy thing? |
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| 48 | ----------------------------- |
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| 49 | |
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| 50 | 1) Cd into the JPL directory. Type the following: |
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| 51 | |
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| 52 | perl Makefile.PL |
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| 53 | make |
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| 54 | make install |
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| 55 | |
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| 56 | Under windows, that's: |
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| 57 | |
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| 58 | perl Makefile.PL |
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| 59 | nmake |
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| 60 | nmake install |
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| 61 | |
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| 62 | 3) cd into the JNI directory (cd ../JNI or cd ..\JNI) |
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| 63 | |
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| 64 | 4) We now need to compile and make the Closer.class available to your |
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| 65 | JPL program. Closer is a WindowListener that closes the Frame we |
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| 66 | make in the test program. |
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| 67 | |
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| 68 | It seems that we've managed to fix the problem with CLASSPATH not |
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| 69 | getting propagated to the JVM, so if '.' is in your CLASSPATH, you |
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| 70 | should be able to compile Closer.java and leave it in the current |
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| 71 | directory: |
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| 72 | |
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| 73 | javac Closer.java |
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| 74 | |
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| 75 | or perhaps |
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| 76 | |
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| 77 | jikes Closer.java |
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| 78 | |
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| 79 | 5) Make the demo: |
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| 80 | |
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| 81 | a) type the following: |
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| 82 | |
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| 83 | for SUN's proprietary software Java: |
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| 84 | |
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| 85 | env JAVA_HOME=/path/to/java perl Makefile.PL |
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| 86 | # setting the JAVA_HOME enviornment variable might not be needed |
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| 87 | # if Java is in installed in a canonical location |
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| 88 | make |
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| 89 | make test |
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| 90 | |
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| 91 | for Kaffe: |
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| 92 | |
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| 93 | env KAFFE_PREFIX=/kaffe/installation/prefix perl Makefile.PL |
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| 94 | # setting the KAFFE_PREFIX enviornment variable might not be needed |
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| 95 | # if Kaffe is in a canonical location |
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| 96 | make |
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| 97 | make test |
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| 98 | |
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| 99 | Under Windows: |
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| 100 | |
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| 101 | perl Makefile.PL |
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| 102 | nmake |
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| 103 | nmake test |
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| 104 | |
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| 105 | |
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| 106 | b) if all went well, type: |
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| 107 | |
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| 108 | make install |
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| 109 | |
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| 110 | or, under Windows: |
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| 111 | |
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| 112 | nmake install |
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| 113 | |
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