change type of result variables to ssize_t

[libserialport.git] / libserialport_internal.h

diff --git a/libserialport_internal.h b/libserialport_internal.h
index 20b3505925a0d8e79d00ae21f641f1a0ac429f32..f1d0d8505494c7949af7e60c98589c74309e0a49 100644 (file)
--- a/libserialport_internal.h
+++ b/libserialport_internal.h
@@ -27,8 +27,8 @@
 #define _CRT_SECURE_NO_WARNINGS
 #endif
 
-/* These Linux/glibc specific defines must appear before other headers.*/
-#ifdef __linux__
+/* These feature test macros must appear before other headers.*/
+#if defined(__linux__) || defined(__CYGWIN__)
 /* For timeradd, timersub, timercmp, realpath. */
 #define _BSD_SOURCE 1 /* for glibc < 2.19 */
 #define _DEFAULT_SOURCE 1 /* for glibc >= 2.20 */
@@ -82,6 +82,9 @@
 #include <time.h>
 #include <poll.h>
 #include <unistd.h>
+#ifdef HAVE_SYS_FILE_H
+#include <sys/file.h>
+#endif
 #endif
 #ifdef __APPLE__
 #include <CoreFoundation/CoreFoundation.h>
@@ -90,6 +93,9 @@
 #include <IOKit/serial/ioss.h>
 #include <sys/syslimits.h>
 #include <mach/mach_time.h>
+#if MAC_OS_X_VERSION_MAX_ALLOWED < 120000 /* Before macOS 12 */
+#define kIOMainPortDefault kIOMasterPortDefault
+#endif
 #endif
 #ifdef __linux__
 #include <dirent.h>