From e20486d508afdf22790a271e90ca76d8df5fa7a5 Mon Sep 17 00:00:00 2001 From: Jonathan Wakely Date: Tue, 25 Jan 2022 10:11:36 +0000 Subject: [PATCH] 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 , 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. --- 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 1d3693af06ca..321944d73f75 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 #include diff --git a/libstdc++-v3/src/filesystem/dir.cc b/libstdc++-v3/src/filesystem/dir.cc index f1bf96aab507..d5b11f252970 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 #include diff --git a/libstdc++-v3/src/filesystem/ops.cc b/libstdc++-v3/src/filesystem/ops.cc index 324c6afc7a93..cd98caf73f27 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 #include -- 2.47.2