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From: Jonathan Wakely <redi@gcc.gnu.org> To: gcc-cvs@gcc.gnu.org, libstdc++-cvs@gcc.gnu.org Subject: [gcc r11-9971] libstdc++: Define _GNU_SOURCE for secure_getenv on Cygwin [PR104217] Date: Mon, 9 May 2022 21:44:16 +0000 (GMT) [thread overview] Message-ID: <20220509214416.494073857364@sourceware.org> (raw) https://gcc.gnu.org/g:8562fbaae9d0c06316188c4749a2171071b6b926 commit r11-9971-g8562fbaae9d0c06316188c4749a2171071b6b926 Author: Jonathan Wakely <jwakely@redhat.com> Date: Tue Jan 25 10:11:36 2022 +0000 libstdc++: Define _GNU_SOURCE for secure_getenv on Cygwin [PR104217] For GNU/Linux G++ defines _GNU_SOURCE automatically, but not for Cygwin. This means secure_getenv is not declared by Cygwin's <stdlib.h>, even though autoconf detected it is present in the library. Define it in the source files that want to use secure_getenv. libstdc++-v3/ChangeLog: PR libstdc++/104217 * src/c++17/fs_ops.cc (_GNU_SOURCE): Define. * src/filesystem/dir.cc (_GNU_SOURCE): Define. * src/filesystem/ops.cc (_GNU_SOURCE): Define. (cherry picked from commit e20486d508afdf22790a271e90ca76d8df5fa7a5) Diff: --- libstdc++-v3/src/c++17/fs_ops.cc | 4 ++++ libstdc++-v3/src/filesystem/dir.cc | 4 ++++ libstdc++-v3/src/filesystem/ops.cc | 4 ++++ 3 files changed, 12 insertions(+) diff --git a/libstdc++-v3/src/c++17/fs_ops.cc b/libstdc++-v3/src/c++17/fs_ops.cc index e308cab6fa0..481b49d20be 100644 --- a/libstdc++-v3/src/c++17/fs_ops.cc +++ b/libstdc++-v3/src/c++17/fs_ops.cc @@ -27,6 +27,10 @@ # define NEED_DO_COPY_FILE # define NEED_DO_SPACE #endif +#ifndef _GNU_SOURCE +// Cygwin needs this for secure_getenv +# define _GNU_SOURCE 1 +#endif #include <bits/largefile-config.h> #include <filesystem> diff --git a/libstdc++-v3/src/filesystem/dir.cc b/libstdc++-v3/src/filesystem/dir.cc index 06e165b8888..446ddf0d2f2 100644 --- a/libstdc++-v3/src/filesystem/dir.cc +++ b/libstdc++-v3/src/filesystem/dir.cc @@ -25,6 +25,10 @@ #ifndef _GLIBCXX_USE_CXX11_ABI # define _GLIBCXX_USE_CXX11_ABI 1 #endif +#ifndef _GNU_SOURCE +// Cygwin needs this for secure_getenv +# define _GNU_SOURCE 1 +#endif #include <bits/largefile-config.h> #include <experimental/filesystem> diff --git a/libstdc++-v3/src/filesystem/ops.cc b/libstdc++-v3/src/filesystem/ops.cc index bd5347468cf..0eaa4b655a1 100644 --- a/libstdc++-v3/src/filesystem/ops.cc +++ b/libstdc++-v3/src/filesystem/ops.cc @@ -27,6 +27,10 @@ # define NEED_DO_COPY_FILE # define NEED_DO_SPACE #endif +#ifndef _GNU_SOURCE +// Cygwin needs this for secure_getenv +# define _GNU_SOURCE 1 +#endif #include <bits/largefile-config.h> #include <experimental/filesystem>
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