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Posted to common-issues@hadoop.apache.org by "Gautham Banasandra (Jira)" <ji...@apache.org> on 2020/08/10 17:07:20 UTC
[jira] [Updated] (HADOOP-17196) Compilation warnings caused by
non-standard flags
[ https://issues.apache.org/jira/browse/HADOOP-17196?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Gautham Banasandra updated HADOOP-17196:
----------------------------------------
Description:
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.
was:
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.
> 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
> Priority: Major
> Original Estimate: 168h
> Remaining Estimate: 168h
>
> 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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