2 files changed, 13 insertions, 4 deletions
diff --git a/src/util.c b/src/util.c
index 526bf9b..7980b74 100644
--- a/src/util.c
+++ b/src/util.c
@@ -14,8 +14,12 @@
   OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
 */
 
-#define _POSIX_SOURCE 1  /* for wordexp, fileno */
-#define _BSD_SOURCE   1  /* for realpath, symlink */
+#define _POSIX_C_SOURCE 1  /* for wordexp, fileno */
+#define _BSD_SOURCE     1  /* for realpath, symlink */
+
+#ifdef __APPLE__
+#    define _DARWIN_C_SOURCE 1  /* for flock */
+#endif
 
 #include <assert.h>
 #include <errno.h>
diff --git a/wscript b/wscript
index e712038..485afa8 100644
--- a/wscript
+++ b/wscript
@@ -80,20 +80,25 @@ def configure(conf):
     autowaf.check_pkg(conf, 'lv2-lv2plug.in-ns-ext-state',
                       uselib_store='LV2_STATE', mandatory=False)
 
+    defines = ['_POSIX_C_SOURCE', '_BSD_SOURCE']
+    if Options.platform == 'darwin':
+        defines += ['_DARWIN_C_SOURCE']
+
     conf.check_cc(function_name='wordexp',
                   header_name='wordexp.h',
-                  defines='_POSIX_SOURCE',
+                  defines=defines,
                   define_name='HAVE_WORDEXP',
                   mandatory=False)
 
     conf.check_cc(function_name='flock',
                   header_name='sys/file.h',
+                  defines=defines,
                   define_name='HAVE_FLOCK',
                   mandatory=False)
 
     conf.check_cc(function_name='fileno',
                   header_name='stdio.h',
-                  defines='_POSIX_SOURCE',
+                  defines=defines,
                   define_name='HAVE_FILENO',
                   mandatory=False)