Gautham Banasandra created HADOOP-17196:
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Summary: Compilation warnings caused by non-standard flags
Key: HADOOP-17196
URL: https://issues.apache.org/jira/browse/HADOOP-17196
Project: Hadoop Common
Issue Type: Bug
Components: build
Affects Versions: 3.1.3
Environment: Windows 10 Pro 64-bit
Reporter: Gautham Banasandra
The C/C++ language standard is not specified in a cross-compiler manner. Even
though it's as straight forward as passing -std as compiler arguments, not all
the values are supported by all the compilers. For example, compilation with
the Visual C++ compiler on Windows with -std=gnu99 flag causes the following
warning -
{code:java}
cl : command line warning D9002: ignoring unknown option '-std=gnu99'
[Z:\hadoop-hdfs-project\hadoop-hdfs-native-client\target\native\main\native\libhdfs-examples\hdfs_read.vcxproj]
{code}
Thus, we need to use the appropriate flags provided by CMake to specify the
C/C++ standards so that it is compiler friendly.
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