diff -Paur --no-dereference -- ed.upstream/main.c ed/main.c
--- ed.upstream/main.c
+++ ed/main.c
@@ -60,6 +60,10 @@
 
 #include "ed.h"
 
+#if defined(__sortix__) && !defined(PATH_MAX)
+#define PATH_MAX 4096
+#endif
+
 void signal_hup(int);
 void signal_int(int);
 void handle_winch(int);
@@ -129,8 +133,10 @@
 	int c, n;
 	int status = 0;
 
+#if 0
 	if (pledge("stdio rpath wpath cpath proc exec tty", NULL) == -1)
 		err(1, "pledge");
+#endif
 
 	home = getenv("HOME");
 
diff -Paur --no-dereference -- ed.upstream/Makefile ed/Makefile
--- ed.upstream/Makefile
+++ ed/Makefile
@@ -0,0 +1,35 @@
+include ../../../build-aux/platform.mak
+include ../../../build-aux/compiler.mak
+include ../../../build-aux/version.mak
+include ../../../build-aux/dirs.mak
+
+OPTLEVEL?=$(DEFAULT_OPTLEVEL)
+CFLAGS?=$(OPTLEVEL)
+
+CFLAGS:=$(CXXFLAGS) -Wall -Wextra -Wno-logical-not-parentheses -Wno-unused-parameter
+CPPFLAGS:=$(CPPFLAGS) -DBACKWARDS
+
+PROGRAM=ed
+MANPAGE=ed.1
+
+OBJS=buf.o glbl.o io.o main.o re.o sub.o undo.o
+
+.PHONY: all
+all: $(PROGRAM)
+
+$(PROGRAM): $(OBJS)
+	$(CC) $(CFLAGS) -o $(PROGRAM) $(OBJS)
+
+%: %.c
+	$(CC) -std=gnu11 $(CFLAGS) $(CPPFLAGS) $< -o $@ $(LIBS)
+
+.PHONY: clean
+clean:
+	rm -f $(PROGRAM) $(OBJS)
+
+.PHONY: install
+install: all
+	mkdir -p $(DESTDIR)$(BINDIR)
+	install $(PROGRAM) $(DESTDIR)$(BINDIR)
+	mkdir -p $(DESTDIR)$(MANDIR)/man1
+	install $(MANPAGE) $(DESTDIR)$(MANDIR)/man1