forked from I2P_Developers/i2p.i2p
zzz
d28f4bd24b
- Replace old non-PIC 62-bit linux libs (GMP 4.1.4 built in 2005)
with PIC libs built with GMP 5.0.2. License is LGPLv3.
Built by sponge with GCC 4.4.4, downloaded from
http://sponge.i2p/files/jbigi/gmp-5.0.2/
For 64-bit processors, both performance testing and
the GMP changelog led us to use 5.0.2 for both the 32- and 64-bit versions,
even though the files are twice as big.
See http://zzz.i2p/topics/306 for discussion and test results.
libjbigi-linux-athlon64.so was a 64 bit file; by the new naming standard
supported by NativeBigInteger, it is now a 32-bit file and the
64-bit one is libjbigi-linux-athlon64_64.so.
All new 64-bit libs will have _64 appended.
- Update build docs
51 lines
1.7 KiB
Plaintext
51 lines
1.7 KiB
Plaintext
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Dynamic library build
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=====================
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If you have a libgmp.so installed on your system already
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(check in /usr/lib), you can build a dynamically linked libjbigi.so as follows:
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cd jbigi
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build.sh dynamic
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You do, of course, need the gmp headers installed.
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On ubuntu, check for libgmp3 and libgmp3-dev packages.
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This is much easier and faster than building GMP from source.
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Static library build
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=====================
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Otherwise, the build script build.sh will download the the GMP source,
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unpack and build it. The GMP version and download location are configured
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in jbigi/build.sh, please review it to ensure you download
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and build the desired version.
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To build the native jbigi and jcpuid libraries for the current host CPU,
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simply run sh build.sh and the results will be packaged up into jbigi.jar
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and the libjbigi.so library.
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To build the native jbigi libraries for all supported CPUs (on the current OS),
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go into jbigi/ and run build-all.sh (the results will be under jbigi/lib/)
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Installation and testing
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========================
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To test, copy jbigi/lib/libjbigi.so
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and jcpuid/lib/freenet/support/CPUInformation/libjcpuid-*.so
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to your i2p installation directory ($I2P). You may also copy jbigi.jar to the $I2P/lib/ directory;
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it will be used only if the router fails to load the native library
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from the I2P installation directory.
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The build.sh script runs two speed tests, one with your existing
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I2P installation and one with the new libjbigi.
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Alternatively, after copying the files to the i2p/ directory,
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to run a speed test comparing the native library to the java library,
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run the shell script below. Adjust the I2P= line as necessary.
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-----------------
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#!/bin/sh
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export I2P=~/i2p
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java -cp $I2P/lib/i2p.jar:$I2P/lib/jbigi.jar net.i2p.util.NativeBigInteger
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