Commit cac3fb06 authored by Moritz Angermann's avatar Moritz Angermann Committed by Ben Gamari

Cleanup PosixSource.h

When trying to build arm64-apple-iso, the build fell over
`strdup`, as the arm64-apple-ios build did not fall into `darwin_HOST_OS`,
and would need `ios_HOST_OS`.

This diff tries to clean up PosixSource.h, instead of layering another
define on top.

As we use `strnlen` in sources that include PosixSource.h, and `strnlen`
is defined in POSIX.1-2008, the `_POSIX_C_SOURCE` and `_XOPEN_SOURCE`
are increased accordingly.

Furthermore the `_DARWIN_C_SOURCE` (required for `u_char`, etc. used in
sysctl.h) define is moved into `OSThreads.h` alongside a similar ifdef
for freebsd.

Test Plan: Build on all supported platforms.

Reviewers: rwbarton, erikd, austin, hvr, simonmar, bgamari

Reviewed By: simonmar, bgamari

Subscribers: thomie

Differential Revision:
parent 8de6e13f
......@@ -11,28 +11,7 @@
#include <ghcplatform.h>
/* We aim for C99 so we need to define following two defines in a consistent way
with what POSIX/XOPEN provide for C99. Some OSes are particularly picky about
the right versions defined here, e.g. Solaris
We also settle on lowest version of POSIX/XOPEN needed for proper C99 support
here which is POSIX.1-2001 compilation and Open Group Technical Standard,
Issue 6 (XPG6). XPG6 itself is a result of the merge of X/Open and POSIX
specification. It is also referred as IEEE Std. 1003.1-2001 or ISO/IEC
9945:2002 or UNIX 03 and SUSv3.
Please also see trac ticket #11757 for more information about switch
to C99/C11.
#define _POSIX_C_SOURCE 200112L
#define _XOPEN_SOURCE 600
#if defined(darwin_HOST_OS)
/* If we don't define this the including sysctl breaks with things like
error: syntax error before 'u_char'
#define _DARWIN_C_SOURCE 1
#define _POSIX_C_SOURCE 200809L
#define _XOPEN_SOURCE 700
#endif /* POSIXSOURCE_H */
......@@ -14,6 +14,11 @@
* because of some specific types, like u_char, u_int, etc. */
#define __BSD_VISIBLE 1
#if defined(darwin_HOST_OS)
/* Inclusion of system headers usually requires _DARWIN_C_SOURCE on Mac OS X
* because of some specific types like u_char, u_int, etc. */
#define _DARWIN_C_SOURCE 1
#include "Rts.h"
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