Merge #799

799: Fix nix on Dragonfly r=Susurrus a=mneumann

This commit replaces pull request https://github.com/nix-rust/nix/pull/684. It fixes building `nix` on DragonFly. All tests pass. This requires most recent libc to build: https://github.com/rust-lang/libc/pull/851.

1 files changed, 3 insertions, 0 deletions

diff --git a/src/errno_dragonfly.c b/src/errno_dragonfly.c
new file mode 100644
index 00000000..32fb4dab
--- /dev/null
+++ b/src/errno_dragonfly.c
@@ -0,0 +1,3 @@
+#include <errno.h>
+
+int *errno_location() { return &errno; }