From: Guus Sliepen <guus@meshlink.io>
Date: Fri, 9 Apr 2021 18:15:56 +0000 (+0200)
Subject: Make sure we #define _POSIX_C_SOURCE.
X-Git-Url: http://git.meshlink.io/?p=meshlink;a=commitdiff_plain;h=b052a89622c02b5888c0ca61e52b19e9dbec29c8

Make sure we #define _POSIX_C_SOURCE.

Some functions, such as clock_gettime(), officially require _POSIX_C_SOURCE
to be set to a minimum version in order to be usable.
---

diff --git a/configure.ac b/configure.ac
index f9a93259..36488499 100644
--- a/configure.ac
+++ b/configure.ac
@@ -12,8 +12,9 @@ AM_SILENT_RULES([yes])
 # Enable GNU extensions.
 # Define this here, not in acconfig's @TOP@ section, since definitions
 # in the latter don't make it into the configure-time tests.
-AC_GNU_SOURCE
+AC_USE_SYSTEM_EXTENSIONS
 AC_DEFINE([__USE_BSD], 1, [Enable BSD extensions])
+AC_DEFINE([_POSIX_C_SOURCE], 200809L, [Enable POSIX features])
 
 dnl Checks for programs.
 AM_PROG_CC_C_O
diff --git a/test/blackbox/common/mesh_event_handler.c b/test/blackbox/common/mesh_event_handler.c
index 17b5abaf..e00f7d3c 100644
--- a/test/blackbox/common/mesh_event_handler.c
+++ b/test/blackbox/common/mesh_event_handler.c
@@ -21,6 +21,8 @@
 #undef NDEBUG
 #endif
 
+#define _POSIX_C_SOURCE 200809L
+
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
diff --git a/test/channels-aio-fd.c b/test/channels-aio-fd.c
index 677944b8..78d9078b 100644
--- a/test/channels-aio-fd.c
+++ b/test/channels-aio-fd.c
@@ -2,6 +2,8 @@
 #undef NDEBUG
 #endif
 
+#define _POSIX_C_SOURCE 200809L
+
 #include <assert.h>
 #include <stdio.h>
 #include <unistd.h>
diff --git a/test/channels-aio.c b/test/channels-aio.c
index 25bcea1e..d424b843 100644
--- a/test/channels-aio.c
+++ b/test/channels-aio.c
@@ -2,6 +2,8 @@
 #undef NDEBUG
 #endif
 
+#define _POSIX_C_SOURCE 200809L
+
 #include <assert.h>
 #include <stdio.h>
 #include <unistd.h>
diff --git a/test/stream.c b/test/stream.c
index 25aaf2f5..6176b9e4 100644
--- a/test/stream.c
+++ b/test/stream.c
@@ -1,4 +1,5 @@
 #define _GNU_SOURCE
+#define _POSIX_C_SOURCE 200809L
 
 #include <stdio.h>
 #include <stdbool.h>
diff --git a/test/utils.c b/test/utils.c
index 53f83d30..5da829a9 100644
--- a/test/utils.c
+++ b/test/utils.c
@@ -1,4 +1,5 @@
 #define _GNU_SOURCE 1
+#define _POSIX_C_SOURCE 200809L
 
 #ifdef NDEBUG
 #undef NDEBUG