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Subject: | [Lilypond-auto] [LilyIssues-auto] [testlilyissues:issues] #5720 Add enabling extension definitions for `-std=c++11` option The compiler option `-std=c++11` means to follow the strict C++11 standard, and cannot use several extensions such as POSIX functions/definitions (e.g. M_PI, strdup, putenv, and chroot). With the option, some environments (e.g. Linux) can use the extensions as it is, but other environments require definitions (e.g. `_GNU_SOURCE`) to enable the extensions. This commit makes configure script checks the environments and adds the definitions. |
Date: | Sun, 02 Feb 2020 04:51:15 -0000 |
-std=c++11
option The compiler option -std=c++11
means to follow the strict C++11 standard, and cannot use several extensions such as POSIX functions/definitions (e.g. M_PI, strdup, putenv, and chroot). With the option, some environments (e.g. Linux) can use the extensions as it is, but other environments require definitions (e.g. _GNU_SOURCE
) to enable the extensions. This commit makes configure script checks the environments and adds the definitions.Diff:
--- old +++ new @@ -1,14 +1,15 @@ -Fix C++11 option +The compiler option `-std=c++11` means +to follow the strict C++11 standard, +and cannot use several extensions +such as POSIX functions/definitions +(e.g. M_PI, strdup, putenv, and chroot). -On the Linux environments, -`M_PI` definition can be used with the `-std=c++11` option. -However, on the other environments (e.g. MinGW), -`M_PI` cannot be used with the `-std=c++11` option. +With the option, some environments (e.g. Linux) +can use the extensions as it is, +but other environments require definitions (e.g. `_GNU_SOURCE`) +to enable the extensions. -Originally `-std=c++11` is an option to follow the strict C++ standard, -and cannot use `M_PI` that is not in the C++ standard. -To use `M_PI`, `-std=gnu++11` instead of `-std=c++11` is required. - -Also, the current default for g++ is `-std=gnu++14`, not `-std=c++14`. +This commit makes +configure script checks the environments and adds the definitions. http://codereview.appspot.com/579270051
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http://codereview.appspot.com/579270051
[issues:#5720] Add enabling extension definitions for -std=c++11
option The compiler option -std=c++11
means to follow the strict C++11 standard, and cannot use several extensions such as POSIX functions/definitions (e.g. M_PI, strdup, putenv, and chroot). With the option, some environments (e.g. Linux) can use the extensions as it is, but other environments require definitions (e.g. _GNU_SOURCE
) to enable the extensions. This commit makes configure script checks the environments and adds the definitions.
Status: Started
Created: Sat Feb 01, 2020 06:13 AM UTC by Masamichi Hosoda
Last Updated: Sun Feb 02, 2020 04:46 AM UTC
Owner: Masamichi Hosoda
The compiler option -std=c++11
means
to follow the strict C++11 standard,
and cannot use several extensions
such as POSIX functions/definitions
(e.g. M_PI, strdup, putenv, and chroot).
With the option, some environments (e.g. Linux)
can use the extensions as it is,
but other environments require definitions (e.g. _GNU_SOURCE
)
to enable the extensions.
This commit makes
configure script checks the environments and adds the definitions.
http://codereview.appspot.com/579270051
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