Sahil Takiar created HDFS-14394:
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Summary: Add -std=c99 / -std=gnu99 to libhdfs compile flags
Key: HDFS-14394
URL: https://issues.apache.org/jira/browse/HDFS-14394
Project: Hadoop HDFS
Issue Type: Task
Components: hdfs-client, libhdfs, native
Reporter: Sahil Takiar
Assignee: Sahil Takiar
libhdfs compilation currently does not enforce a minimum required C version. As
of today, the libhdfs build on Hadoop QA works, but when built on a machine
with an outdated gcc / cc version where C89 is the default, compilation fails
due to errors such as:
{code}
/build/hadoop/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfs/jclasses.c:106:5:
error: ‘for’ loop initial declarations are only allowed in C99 mode
for (int i = 0; i < numCachedClasses; i++) {
^
/build/hadoop/hadoop-hdfs-project/hadoop-hdfs-native-client/src/main/native/libhdfs/jclasses.c:106:5:
note: use option -std=c99 or -std=gnu99 to compile your code
{code}
We should add the -std=c99 / -std=gnu99 flags to libhdfs compilation so that we
can enforce C99 as the minimum required version.
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