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
