* Add a few _INCLUDE_POSIX_SOURCE defines here and there so that we build

out of the box with HP-UX's c99 compiler.

configure.ac

@@ -50,7 +50,8 @@ AC_CHECK_TYPES(socklen_t, [], [],
    #include <sys/socket.h>])
 
 AC_MSG_CHECKING(for read() prototype)
-AC_TRY_COMPILE([#include <unistd.h>],
+AC_TRY_COMPILE([#define _INCLUDE_POSIX_SOURCE
+                #include <unistd.h>],
  [ssize_t read(int fd, void *buf, size_t count);],
  [AC_MSG_RESULT(ssize_t read(... size_t);)
   AC_DEFINE(READ_USES_SSIZE_T, 1, [Define to 1 if read() uses ssize_t.])],

src/lib-fd.c

@@ -27,6 +27,7 @@
 #define _LARGEFILE64_SOURCE
 /* Use this to get proper prototypes on HP-UX systems */
 #define _XOPEN_SOURCE_EXTENDED
+#define _INCLUDE_POSIX_SOURCE
 
 #if defined HAVE_STDINT_H
 #   include <stdint.h>

src/lib-mem.c

@@ -24,6 +24,8 @@
 #define _BSD_SOURCE
 /* Use this to get mmap64() on glibc systems */
 #define _LARGEFILE64_SOURCE
+/* Use this to get ENOMEM on HP-UX */
+#define _INCLUDE_POSIX_SOURCE
 /* Use this to get posix_memalign */
 #if defined HAVE_POSIX_MEMALIGN
 #   define _XOPEN_SOURCE 600

src/lib-signal.c

@@ -18,8 +18,10 @@
 
 #include "config.h"
 
-/* needed for sighandler_t */
+/* Needed for sighandler_t on glibc systems */
 #define _GNU_SOURCE
+/* Needed for struct sigaction on HP-UX */
+#define _INCLUDE_POSIX_SOURCE
 
 #if defined HAVE_STDINT_H
 #   include <stdint.h>

src/zzuf.c

@@ -18,6 +18,9 @@
 
 #include "config.h"
 
+/* Needed for STDERR_FILENO on HP-UX */
+#define _INCLUDE_POSIX_SOURCE
+
 #if defined HAVE_STDINT_H
 #   include <stdint.h>
 #elif defined HAVE_INTTYPES_H
@@ -49,6 +52,9 @@
 #include <fcntl.h>
 #include <errno.h>
 #include <signal.h>
+#if defined HAVE_SYS_TIME_H
+#   include <sys/time.h>
+#endif
 #if defined HAVE_SYS_WAIT_H
 #   include <sys/wait.h>
 #endif

test/zzcat.c

@@ -14,7 +14,10 @@
 
 #include "config.h"
 
-#define _LARGEFILE64_SOURCE /* for lseek64() */
+/* Needed for lseek64() */
+#define _LARGEFILE64_SOURCE
+/* Needed for O_RDONLY on HP-UX */
+#define _INCLUDE_POSIX_SOURCE
 
 #include <sys/types.h>
 #include <sys/stat.h>