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Wei-Chiu Chuang commented on HDFS-14394: ---------------------------------------- We do mention gcc version supported in BUILD.txt {quote} One of the compilers that support thread_local storage: GCC 4.8.1 or later, Visual Studio, Clang (community version), Clang (version for iOS 9 and later) (if compiling native code) {quote} c99 is supported in gcc since at least gcc 3.2.0, so enforcing c99 doesn't break compat. I couldn't find the minimum version of Clang that supports c99, but I guess it's reasonable to assume Clang supports c99 since inception, since Clang was first released in 2007. > 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 > Priority: Major > > 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 machine with an outdated gcc / cc version where C89 is the default, 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. -- This message was sent by Atlassian JIRA (v7.6.3#76005) --------------------------------------------------------------------- To unsubscribe, e-mail: hdfs-issues-unsubscr...@hadoop.apache.org For additional commands, e-mail: hdfs-issues-h...@hadoop.apache.org