make: unifdef for other OSes (undefined)

@@ -55,20 +55,11 @@
 #include <sys/stat.h>           /* open() */
 #include <sys/wait.h>           /* wait() */
 #include <ulimit.h>             /* ulimit() */
 #include <unistd.h>             /* close(), dup2() */
 
-#if defined (HP_UX) || defined (linux)
-#       include <sys/param.h>
-#       include <wctype.h>
-#       include <wchar.h>
-#endif
 
-#if defined (linux)
-#       define wslen(x) wcslen(x)
-#       define wscpy(x,y) wcscpy(x,y)
-#endif
 
 /*
  * Defined macros
  */
 #if defined(DISTRIBUTED) || defined(MAKETOOL) /* tolik */

@@ -99,23 +90,11 @@
  * The second attempt seems to work.
  */
 int
 my_open(const char *path, int oflag, mode_t mode) {
         int res = open(path, oflag, mode);
-#ifdef linux
-// Workaround for NFS problem: even when all directories in 'path'
-// exist, 'open' (file creation) fails with ENOENT.
-        int nattempt = 0;
-        while (res < 0 && (errno == ESTALE || errno == EAGAIN || errno == ENOENT)) {
-                nattempt++;
-                if(nattempt > 30) {
-                        break;
-                }
-                sleep(1);
-#else
         if (res < 0 && (errno == ESTALE || errno == EAGAIN)) {
-#endif
                 /* Stale NFS file handle. Try again */
                 res = open(path, oflag, mode);
         }
         return res;
 }

@@ -130,21 +109,13 @@
 redirect_io(char *stdout_file, char *stderr_file)
 {        
         long            descriptor_limit;
         int             i;
 
-#if defined (HP_UX) || defined (linux)
-        /*
-         *  HP-UX does not support the UL_GDESLIM command for ulimit().
-         *  NOFILE == max num open files per process (from <sys/param.h>)
-         */
-        descriptor_limit = NOFILE;
-#else
         if ((descriptor_limit = ulimit(UL_GDESLIM)) < 0) {
                 fatal_mksh(catgets(libmksdmsi18n_catd, 1, 89, "ulimit() failed: %s"), errmsg(errno));
         }
-#endif
         for (i = 3; i < descriptor_limit; i++) {
                 (void) close(i);
         }
         if ((i = my_open(stdout_file,
                  O_WRONLY | O_CREAT | O_TRUNC | O_DSYNC,

@@ -342,37 +313,20 @@
                 argv[argv_index++] = (char *)NOCATGETS("nice");
                 (void) sprintf(nice_prio_buf, NOCATGETS("-%d"), nice_prio);
                 argv[argv_index++] = strdup(nice_prio_buf);
         }
         argv[argv_index++] = shellname;
-#if defined(linux)
-        if(0 == strcmp(shell->string_mb, (char*)NOCATGETS("/bin/sh"))) {
-                argv[argv_index++] = (char*)(ignore_error ? NOCATGETS("-c") : NOCATGETS("-ce"));
-        } else {
-                argv[argv_index++] = (char*)NOCATGETS("-c");
-        }
-#else
         argv[argv_index++] = (char*)(ignore_error ? NOCATGETS("-c") : NOCATGETS("-ce"));
-#endif
         if ((length = wslen(command)) >= MAXPATHLEN) {
                 tmp_mbs_buffer = getmem((length * MB_LEN_MAX) + 1);
                 (void) wcstombs(tmp_mbs_buffer, command, (length * MB_LEN_MAX) + 1);
                 cmd_argv_index = argv_index;
                 argv[argv_index++] = strdup(tmp_mbs_buffer);
                 retmem_mb(tmp_mbs_buffer);
         } else {
                 WCSTOMBS(mbs_buffer, command);
                 cmd_argv_index = argv_index;
-#if defined(linux)
-                int mbl = strlen(mbs_buffer);
-                if(mbl > 2) {
-                        if(mbs_buffer[mbl-1] == '\n' && mbs_buffer[mbl-2] == '\\') {
-                                mbs_buffer[mbl] = '\n';
-                                mbs_buffer[mbl+1] = 0;
-                        }
-                }
-#endif
                 argv[argv_index++] = strdup(mbs_buffer);
         }
         argv[argv_index] = NULL;
         (void) fflush(stdout);
         if ((childPid = fork()) == 0) {