From: Ruediger Meier <ruediger.meier@xxxxxxxxxxx>
Hope there are no side effect when defining _DARWIN_C_SOURCE
globally.
Signed-off-by: Ruediger Meier <ruediger.meier@xxxxxxxxxxx>
---
configure.ac | 6 ++++++
include/c.h | 8 ++++++++
2 files changed, 14 insertions(+)
diff --git a/configure.ac b/configure.ac
index e9c8ef5..dbdcea4 100644
--- a/configure.ac
+++ b/configure.ac
@@ -158,11 +158,17 @@ bsd_os=no
AS_CASE([${host_os}],
[*linux*],
[linux_os=yes],
+ [*darwin*],
+ [darwin_os=yes],
[*bsd*],
[bsd_os=yes])
AM_CONDITIONAL([LINUX], [test "x$linux_os" = xyes])
+AM_CONDITIONAL([DARWIN], [test "x$darwin_os" = xyes])
AM_CONDITIONAL([BSD], [test "x$bsd_os" = xyes])
+AS_IF([test "x$darwin_os" = xyes], [
+ AC_DEFINE([_DARWIN_C_SOURCE], [1], [Enable MAP_ANON in sys/mman.h on Mac OS X])
+])
dnl define ARCH_<NAME> conditionals
UL_SET_ARCH([I86], [i?86-*])
diff --git a/include/c.h b/include/c.h
index ca028ba..aec3439 100644
--- a/include/c.h
+++ b/include/c.h
@@ -355,4 +355,12 @@ static inline int xusleep(useconds_t usec)
*/
#define UL_GETPW_BUFSIZ (16 * 1024)
+/*
+ * Darwin or other BSDs may only have MAP_ANON. To get it on Darwin we must
+ * define _DARWIN_C_SOURCE before including sys/mman.h. We do this in config.h.
+ */
+#if !defined MAP_ANONYMOUS && defined MAP_ANON
+# define MAP_ANONYMOUS (MAP_ANON)
+#endif
+
#endif /* UTIL_LINUX_C_H */
--
1.8.4.5
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