fix HAVE_UNISTD_H glitches

externals/loaders/hexloader/hexloader.c

@@ -36,7 +36,7 @@
 #ifdef DL_OPEN
 # include <dlfcn.h>
 #endif
-#ifdef UNISTD
+#ifdef HAVE_UNISTD_H
 # include <stdlib.h>
 # include <unistd.h>
 #endif

pd/src/configure.ac

@@ -121,7 +121,7 @@ dnl This should be fixed so Pd can use ALSA shared libraries where appropriate.
       LDFLAGS="$LDFLAGS -static"
     fi 
     EXT=pd_linux
-    CPPFLAGS="-DHAVE_LIBDL -DPA_USE_OSS -DUNIX -DUNISTD -fno-strict-aliasing"
+    CPPFLAGS="-DHAVE_LIBDL -DPA_USE_OSS -DUNIX -DHAVE_UNISTD_H -fno-strict-aliasing"
 dnl No OSS on hurd
     if test `uname -s` = "GNU";
     then

pd/src/s_main.c

@@ -14,7 +14,7 @@
 #include <fcntl.h>
 #include <stdlib.h>
 
-#ifdef UNISTD
+#ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #endif
 #ifdef MSW
@@ -519,7 +519,7 @@ static char *(usagemessage[]) = {
 "-send \"msg...\"   -- send a message at startup, after patches are loaded\n",
 "-noprefs         -- suppress loading preferences on startup\n",
 "-console         -- open the console along with the pd window\n",
-#ifdef UNISTD
+#ifdef HAVE_UNISTD_H
 "-rt or -realtime -- use real-time priority\n",
 "-nrt             -- don't use real-time priority\n",
 #endif
@@ -996,7 +996,7 @@ int sys_argparse(int argc, char **argv)
             sys_noautopatch = 0;
             argc--; argv++;
         }
-#ifdef UNISTD
+#ifdef HAVE_UNISTD_H
         else if (!strcmp(*argv, "-rt") || !strcmp(*argv, "-realtime"))
         {
             sys_hipriority = 1;

pd/src/s_path.c

@@ -14,7 +14,7 @@
 #define DEBUG(x)
 
 #include <stdlib.h>
-#ifdef UNISTD
+#ifdef HAVE_UNISTD_H
 #include <unistd.h>
 #include <sys/stat.h>
 #endif
@@ -360,7 +360,7 @@ int sys_trytoopenone(const char *dir, const char *name, const char* ext,
     if ((fd=open(dirresult,O_RDONLY | MSWOPENFLAG(bin))) >= 0)
     {
             /* in unix, further check that it's not a directory */
-#ifdef UNISTD
+#ifdef HAVE_UNISTD_H
         struct stat statbuf;
         int ok =  ((fstat(fd, &statbuf) >= 0) &&
             !S_ISDIR(statbuf.st_mode));