diff -Paur --no-dereference -- dash.upstream/src/cd.c dash/src/cd.c
--- dash.upstream/src/cd.c
+++ dash/src/cd.c
@@ -252,7 +252,7 @@
 STATIC char *
 getpwd()
 {
-#ifdef __GLIBC__
+#if defined(__GLIBC__) || defined(__sortix__)
 	char *dir = getcwd(0, 0);
 
 	if (dir)
diff -Paur --no-dereference -- dash.upstream/src/exec.c dash/src/exec.c
--- dash.upstream/src/exec.c
+++ dash/src/exec.c
@@ -151,6 +151,9 @@
 STATIC void
 tryexec(char *cmd, char **argv, char **envp)
 {
+#if defined(__sortix__)
+	execvpe((const char*) cmd, argv, envp);
+#else
 	char *const path_bshell = _PATH_BSHELL;
 
 repeat:
@@ -166,6 +169,7 @@
 		*argv = cmd = path_bshell;
 		goto repeat;
 	}
+#endif
 }
 
 
diff -Paur --no-dereference -- dash.upstream/src/histedit.c dash/src/histedit.c
--- dash.upstream/src/histedit.c
+++ dash/src/histedit.c
@@ -32,7 +32,6 @@
  * SUCH DAMAGE.
  */
 
-#include <sys/param.h>
 #ifdef HAVE_PATHS_H
 #include <paths.h>
 #endif
diff -Paur --no-dereference -- dash.upstream/src/jobs.c dash/src/jobs.c
--- dash.upstream/src/jobs.c
+++ dash/src/jobs.c
@@ -40,7 +40,6 @@
 #include <paths.h>
 #endif
 #include <sys/types.h>
-#include <sys/param.h>
 #ifdef BSD
 #include <sys/wait.h>
 #include <sys/time.h>
@@ -207,7 +206,7 @@
 				mflag = on = 0;
 				goto close;
 			}
-			if (pgrp == getpgrp())
+			if (pgrp == getpgid(0))
 				break;
 			killpg(0, SIGTTIN);
 		} while (1);
@@ -457,7 +456,7 @@
 
 	if (mode & SHOW_PGID) {
 		/* just output process (group) id of pipeline */
-		outfmt(out, "%d\n", ps->pid);
+		outfmt(out, "%jd\n", (intmax_t) ps->pid);
 		return;
 	}
 
@@ -470,7 +469,7 @@
 		s[col - 2] = '-';
 
 	if (mode & SHOW_PID)
-		col += fmtstr(s + col, 16, "%d ", ps->pid);
+		col += fmtstr(s + col, 16, "%jd ", (intmax_t) ps->pid);
 
 	psend = ps + jp->nprocs;
 
@@ -490,7 +489,7 @@
 
 	do {
 		/* for each process */
-		col = fmtstr(s, 48, " |\n%*c%d ", indent, ' ', ps->pid) - 3;
+		col = fmtstr(s, 48, " |\n%*c%jd ", indent, ' ', (intmax_t) ps->pid) - 3;
 
 start:
 		outfmt(
@@ -1136,7 +1135,7 @@
 
 	do {
 		gotsigchld = 0;
-		err = wait3(status, flags, NULL);
+		err = waitpid(-1, status, flags);
 		if (err || !block)
 			break;
 
diff -Paur --no-dereference -- dash.upstream/src/Makefile.in dash/src/Makefile.in
--- dash.upstream/src/Makefile.in
+++ dash/src/Makefile.in
@@ -170,9 +170,9 @@
 AM_CFLAGS = $(COMMON_CFLAGS)
 AM_CPPFLAGS = $(COMMON_CPPFLAGS)
 AM_CFLAGS_FOR_BUILD = -g -O2 $(COMMON_CFLAGS) 
-AM_CPPFLAGS_FOR_BUILD = $(COMMON_CPPFLAGS)
+AM_CPPFLAGS_FOR_BUILD = -DBSD=1 -DSHELL -DIFS_BROKEN
 COMPILE_FOR_BUILD = \
-	$(CC_FOR_BUILD) $(DEFAULT_INCLUDES) $(AM_CPPFLAGS_FOR_BUILD) \
+	unset HOST_SYSTEM_ROOT && $(CC_FOR_BUILD) $(DEFAULT_INCLUDES) $(AM_CPPFLAGS_FOR_BUILD) \
 	$(CPPFLAGS_FOR_BUILD) \
 	$(AM_CFLAGS_FOR_BUILD) $(CFLAGS_FOR_BUILD) 
 
@@ -542,7 +542,11 @@
 
 info-am:
 
-install-data-am: install-man
+install-data-am: install-man install-proper-shells
+
+install-proper-shells:
+	mkdir -p "$(DESTDIR)$(sysconfdir)/proper-shells"
+	echo dash > "$(DESTDIR)$(sysconfdir)/proper-shells/dash"
 
 install-dvi: install-dvi-am
 
diff -Paur --no-dereference -- dash.upstream/src/miscbltin.c dash/src/miscbltin.c
--- dash.upstream/src/miscbltin.c
+++ dash/src/miscbltin.c
@@ -37,7 +37,6 @@
  */
 
 #include <sys/types.h>		/* quad_t */
-#include <sys/param.h>		/* BSD4_4 */
 #include <sys/stat.h>
 #include <sys/time.h>
 #include <sys/resource.h>
diff -Paur --no-dereference -- dash.upstream/src/output.c dash/src/output.c
--- dash.upstream/src/output.c
+++ dash/src/output.c
@@ -44,7 +44,6 @@
  */
 
 #include <sys/types.h>		/* quad_t */
-#include <sys/param.h>		/* BSD4_4 */
 #include <sys/ioctl.h>
 
 #include <stdio.h>	/* defines BUFSIZ */
diff -Paur --no-dereference -- dash.upstream/src/parser.c dash/src/parser.c
--- dash.upstream/src/parser.c
+++ dash/src/parser.c
@@ -32,10 +32,6 @@
  * SUCH DAMAGE.
  */
 
-#if HAVE_ALLOCA_H
-#include <alloca.h>
-#endif
-
 #include <stdlib.h>
 
 #include "shell.h"
@@ -1090,10 +1086,12 @@
 				if (len) {
 					char *str;
 
-					str = alloca(len + 1);
+					str = ckmalloc(len + 1);
 					*(char *)mempcpy(str, p, len) = 0;
 
 					pushstring(str, NULL);
+
+					ckfree(str);
 				}
 			}
 		}
@@ -1300,7 +1298,7 @@
 	str = NULL;
 	savelen = out - (char *)stackblock();
 	if (savelen > 0) {
-		str = alloca(savelen);
+		str = ckmalloc(savelen);
 		memcpy(str, stackblock(), savelen);
 	}
         if (oldstyle) {
@@ -1400,6 +1398,7 @@
 	if (str) {
 		memcpy(out, str, savelen);
 		STADJUST(savelen, out);
+		ckfree(str);
 	}
 	USTPUTC(CTLBACKQ, out);
 	if (oldstyle)
diff -Paur --no-dereference -- dash.upstream/src/redir.c dash/src/redir.c
--- dash.upstream/src/redir.c
+++ dash/src/redir.c
@@ -34,7 +34,6 @@
 
 #include <sys/stat.h>
 #include <sys/types.h>
-#include <sys/param.h>	/* PIPE_BUF */
 #include <signal.h>
 #include <string.h>
 #include <fcntl.h>
diff -Paur --no-dereference -- dash.upstream/src/shell.h dash/src/shell.h
--- dash.upstream/src/shell.h
+++ dash/src/shell.h
@@ -49,8 +49,6 @@
  * a quit signal will generate a core dump.
  */
 
-#include <sys/param.h>
-
 #ifndef JOBS
 #define JOBS 1
 #endif