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Hadoop, mail # dev - Hadoop native builds fail on ARM due to -m32


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Hadoop native builds fail on ARM due to -m32
Trevor Robinson 2011-05-11, 00:13
Is the native build failing on ARM (where gcc doesn't support -m32) a
known issue, and is there a workaround or fix pending?

$ ant -Dcompile.native=true
...
     [exec] make  all-am
     [exec] make[1]: Entering directory
`/home/trobinson/dev/hadoop-common/build/native/Linux-arm-32'
     [exec] /bin/bash ./libtool  --tag=CC   --mode=compile gcc
-DHAVE_CONFIG_H -I. -I/home/trobinson/dev/hadoop-common/src/native
-I/usr/lib/jvm/java-6-openjdk/include
-I/usr/lib/jvm/java-6-openjdk/include/linux
-I/home/trobinson/dev/hadoop-common/src/native/src
-Isrc/org/apache/hadoop/io/compress/zlib
-Isrc/org/apache/hadoop/security -Isrc/org/apache/hadoop/io/nativeio/
-g -Wall -fPIC -O2 -m32 -g -O2 -MT ZlibCompressor.lo -MD -MP -MF
.deps/ZlibCompressor.Tpo -c -o ZlibCompressor.lo `test -f
'src/org/apache/hadoop/io/compress/zlib/ZlibCompressor.c' || echo
'/home/trobinson/dev/hadoop-common/src/native/'`src/org/apache/hadoop/io/compress/zlib/ZlibCompressor.c
     [exec] libtool: compile:  gcc -DHAVE_CONFIG_H -I.
-I/home/trobinson/dev/hadoop-common/src/native
-I/usr/lib/jvm/java-6-openjdk/include
-I/usr/lib/jvm/java-6-openjdk/include/linux
-I/home/trobinson/dev/hadoop-common/src/native/src
-Isrc/org/apache/hadoop/io/compress/zlib
-Isrc/org/apache/hadoop/security -Isrc/org/apache/hadoop/io/nativeio/
-g -Wall -fPIC -O2 -m32 -g -O2 -MT ZlibCompressor.lo -MD -MP -MF
.deps/ZlibCompressor.Tpo -c
/home/trobinson/dev/hadoop-common/src/native/src/org/apache/hadoop/io/compress/zlib/ZlibCompressor.c
 -fPIC -DPIC -o .libs/ZlibCompressor.o
     [exec] make[1]: Leaving directory
`/home/trobinson/dev/hadoop-common/build/native/Linux-arm-32'
     [exec] cc1: error: unrecognized command line option "-m32"
     [exec] make[1]: *** [ZlibCompressor.lo] Error 1
     [exec] make: *** [all] Error 2

This closest issue I can find is
https://issues.apache.org/jira/browse/HADOOP-6258 (Native compilation
assumes gcc), as well as other issues regarding where and how to
specify -m32/64. However, there doesn't seem to be a specific issue
covering build failure on systems using gcc where the gcc target does
not support -m32/64 (such as ARM).

I've attached a patch that disables specifying -m$(JVM_DATA_MODEL)
when $host_cpu starts with "arm". (For instance, host_cpu = armv7l for
my system.) To any maintainers on this list, please let me know if
you'd like me to open a new issue and/or attach this patch to an
issue.

Thanks,
Trevor