independ pscat(1)

Makefile

@@ -93,11 +93,13 @@ nutshell.o: libio usefulmacros src/nutshell.c src/nutshell.h src/nutshell_builti
 nutshell: libio nutshell.o
 	$(CC) $(CFLAGS) -o bin/nutshell build/libio.o build/nutshell.o
 
-pscat.o: libio src/pscat.c
-	$(CC) $(CFLAGS) -c -o build/pscat.o src/pscat.c
+pscat: bin/pscat
 
-pscat: libio pscat.o
-	$(CC) $(CFLAGS) -o bin/pscat build/libio.o build/pscat.o
+bin/pscat: pscat/pscat
+	mv pscat/pscat bin/pscat
+
+pscat/pscat: sysexits pscat/pscat.c pscat/Makefile
+	$(MAKE) -C pscat sane
 
 retval.o: libio src/retval.c sysexits
 	$(CC) $(CFLAGS) -c -o build/retval.o src/retval.c
@@ -105,13 +107,17 @@ retval.o: libio src/retval.c sysexits
 retval: libio retval.o
 	$(CC) $(CFLAGS) -o bin/retval build/retval.o build/libio.o
 
-roll: roll/roll
+roll: bin/roll
+
+bin/roll: roll/roll
 	mv roll/roll bin/roll
 
 roll/roll: sysexits roll/roll.c roll/Makefile
 	$(MAKE) -C roll sane
 
-rot13: rot13/rot13
+rot13: bin/rot13
+
+bin/rot13: rot13/rot13
 	mv rot13/rot13 bin/rot13
 
 rot13/rot13: sysexits rot13/rot13.c rot13/Makefile
@@ -288,4 +294,4 @@ unscii-user:
 	curl "http://viznut.fi/unscii/unscii-16-full.pcf" >"~/.fonts/unscii-16-full.pcf"
 	curl "http://viznut.fi/unscii/unscii-16-full.ttf" >"~/.fonts/unscii-16-full.ttf"
 
-.PHONY: all clean cleanlibraries cleanprograms stdbool sysexits usefulmacros
+.PHONY: all clean cleanlibraries cleanprograms pscat roll rot13 stdbool sysexits usefulmacros

pscat/Makefile

@@ -0,0 +1,28 @@
+all: pscat
+
+clean:
+	rm -rf ../dist/pscat ../dist/pscat.tar ../dist/pscat.tar.gz pscat
+
+dist: ../dist/pscat.tar.gz
+
+sane: pscat.c ../include/sysexits.h
+	$(CC) -DUSE_ASCII_H -DDONT_USE_SYSTEM_SYSEXITS -o pscat pscat.c
+
+pscat: pscat.c
+	$(CC) -o pscat pscat.c
+
+../dist/pscat: pscat
+	mkdir -p ../dist/pscat.tmp/bin/ ../dist/pscat.tmp/share/man/man1/
+	cp pscat ../dist/pscat.tmp/bin/pscat
+	cp pscat.1 ../dist/pscat.tmp/share/man/man1/pscat.1
+	mv ../dist/pscat.tmp ../dist/pscat
+
+../dist/pscat.tar: ../dist/pscat
+	cd ../dist/pscat && pax -w -x ustar . >../pscat.tar.tmp
+	mv ../dist/pscat.tar.tmp ../dist/pscat.tar
+
+../dist/pscat.tar.gz: ../dist/pscat.tar
+	gzip -c <../dist/pscat.tar >../dist/pscat.tar.gz.tmp
+	mv ../dist/pscat.tar.gz.tmp ../dist/pscat.tar.gz
+
+.PHONY: all clean sane

pscat/pscat.c

@@ -1,15 +1,25 @@
-#include <ascii.h>
+#ifndef DONT_USE_SYSTEM_SYSEXITS
 #	include <sysexits.h>
+#else
+#	include "../include/sysexits.h"
+#endif /* ifndef DONT_USE_SYSTEM_SYSEXITS */
+
+#include <stdio.h>
 #include <sys/wait.h>
 #include <unistd.h>
-#include "libio.h"
 
 static char *program_name = "pscat";
 
 /* Originally designed to use parentheses but changed to brackets to escape the
  * hassle of escaping them from the Bourne shell. */
+#ifndef USE_ASCII_H
+#	define L_PAREN '['
+#	define R_PAREN ']'
+#else
+#	include "../include/ascii.h"
 #	define L_PAREN ASCII_LEFT_SQUARE_BRACKET
 #	define R_PAREN ASCII_RIGHT_SQUARE_BRACKET
+#endif /* ifndef USE_ASCII_H */
 
 /* Test string containing { c, '\0' } without iteration.
  * Theoretically saves a little bit of time compared to strcmp(3). */
@@ -53,7 +63,6 @@ check_arg(char **argv){
 }
 
 int main(int argc, char *argv[]){
-	char *argv0;
 	char **psstart;
 	int child;
 	int i;
@@ -61,13 +70,13 @@ int main(int argc, char *argv[]){
 	int retval;
 	int terms;
 
-	argv0 = argv[0] == NULL ? program_name : argv[0];
 	retval = 0;
 
 	if((terms = check_arg(++argv)) == 0){
-		write(2, "Usage: ", 7);
-		fdprint(2, argv0);
-		write(2, " \"[\" [utility [argument...]] \"]\" ...\n", 37);
+		fprintf(stderr,
+			"Usage: %s \"[\" [utility [argument...]] \"]\" ...\n",
+			argv[0] == NULL ? program_name : argv[0]
+		);
 		return EX_USAGE;
 	}