Makefile: bikesheddingly replace ${} with $()

Makefile

@@ -4,71 +4,71 @@
 include config.mk
 
 SRC = drw.c dmenu.c stest.c util.c
-OBJ = ${SRC:.c=.o}
+OBJ = $(SRC:.c=.o)
 
 all: options dmenu stest
 
 options:
 	@echo dmenu build options:
-	@echo "CFLAGS   = ${CFLAGS}"
+	@echo "CFLAGS   = $(CFLAGS)"
-	@echo "LDFLAGS  = ${LDFLAGS}"
+	@echo "LDFLAGS  = $(LDFLAGS)"
-	@echo "CC       = ${CC}"
+	@echo "CC       = $(CC)"
 
 .c.o:
 	@echo CC $<
-	@${CC} -c ${CFLAGS} $<
+	@$(CC) -c $(CFLAGS) $<
 
 config.h:
 	@echo creating $@ from config.def.h
 	@cp config.def.h $@
 
-${OBJ}: arg.h config.h config.mk drw.h
+$(OBJ): arg.h config.h config.mk drw.h
 
 dmenu: dmenu.o drw.o util.o
 	@echo CC -o $@
-	@${CC} -o $@ dmenu.o drw.o util.o ${LDFLAGS}
+	@$(CC) -o $@ dmenu.o drw.o util.o $(LDFLAGS)
 
 stest: stest.o
 	@echo CC -o $@
-	@${CC} -o $@ stest.o ${LDFLAGS}
+	@$(CC) -o $@ stest.o $(LDFLAGS)
 
 clean:
 	@echo cleaning
-	@rm -f dmenu stest ${OBJ} dmenu-${VERSION}.tar.gz
+	@rm -f dmenu stest $(OBJ) dmenu-$(VERSION).tar.gz
 
 dist: clean
 	@echo creating dist tarball
-	@mkdir -p dmenu-${VERSION}
+	@mkdir -p dmenu-$(VERSION)
 	@cp LICENSE Makefile README arg.h config.def.h config.mk dmenu.1 \
-		drw.h util.h dmenu_path dmenu_run stest.1 ${SRC} \
+		drw.h util.h dmenu_path dmenu_run stest.1 $(SRC) \
-		dmenu-${VERSION}
+		dmenu-$(VERSION)
-	@tar -cf dmenu-${VERSION}.tar dmenu-${VERSION}
+	@tar -cf dmenu-$(VERSION).tar dmenu-$(VERSION)
-	@gzip dmenu-${VERSION}.tar
+	@gzip dmenu-$(VERSION).tar
-	@rm -rf dmenu-${VERSION}
+	@rm -rf dmenu-$(VERSION)
 
 install: all
-	@echo installing executables to ${DESTDIR}${PREFIX}/bin
+	@echo installing executables to $(DESTDIR)$(PREFIX)/bin
-	@mkdir -p ${DESTDIR}${PREFIX}/bin
+	@mkdir -p $(DESTDIR)$(PREFIX)/bin
-	@cp -f dmenu dmenu_path dmenu_run stest ${DESTDIR}${PREFIX}/bin
+	@cp -f dmenu dmenu_path dmenu_run stest $(DESTDIR)$(PREFIX)/bin
-	@chmod 755 ${DESTDIR}${PREFIX}/bin/dmenu
+	@chmod 755 $(DESTDIR)$(PREFIX)/bin/dmenu
-	@chmod 755 ${DESTDIR}${PREFIX}/bin/dmenu_path
+	@chmod 755 $(DESTDIR)$(PREFIX)/bin/dmenu_path
-	@chmod 755 ${DESTDIR}${PREFIX}/bin/dmenu_run
+	@chmod 755 $(DESTDIR)$(PREFIX)/bin/dmenu_run
-	@chmod 755 ${DESTDIR}${PREFIX}/bin/stest
+	@chmod 755 $(DESTDIR)$(PREFIX)/bin/stest
-	@echo installing manual pages to ${DESTDIR}${MANPREFIX}/man1
+	@echo installing manual pages to $(DESTDIR)$(MANPREFIX)/man1
-	@mkdir -p ${DESTDIR}${MANPREFIX}/man1
+	@mkdir -p $(DESTDIR)$(MANPREFIX)/man1
-	@sed "s/VERSION/${VERSION}/g" < dmenu.1 > ${DESTDIR}${MANPREFIX}/man1/dmenu.1
+	@sed "s/VERSION/$(VERSION)/g" < dmenu.1 > $(DESTDIR)$(MANPREFIX)/man1/dmenu.1
-	@sed "s/VERSION/${VERSION}/g" < stest.1 > ${DESTDIR}${MANPREFIX}/man1/stest.1
+	@sed "s/VERSION/$(VERSION)/g" < stest.1 > $(DESTDIR)$(MANPREFIX)/man1/stest.1
-	@chmod 644 ${DESTDIR}${MANPREFIX}/man1/dmenu.1
+	@chmod 644 $(DESTDIR)$(MANPREFIX)/man1/dmenu.1
-	@chmod 644 ${DESTDIR}${MANPREFIX}/man1/stest.1
+	@chmod 644 $(DESTDIR)$(MANPREFIX)/man1/stest.1
 
 uninstall:
-	@echo removing executables from ${DESTDIR}${PREFIX}/bin
+	@echo removing executables from $(DESTDIR)$(PREFIX)/bin
-	@rm -f ${DESTDIR}${PREFIX}/bin/dmenu
+	@rm -f $(DESTDIR)$(PREFIX)/bin/dmenu
-	@rm -f ${DESTDIR}${PREFIX}/bin/dmenu_path
+	@rm -f $(DESTDIR)$(PREFIX)/bin/dmenu_path
-	@rm -f ${DESTDIR}${PREFIX}/bin/dmenu_run
+	@rm -f $(DESTDIR)$(PREFIX)/bin/dmenu_run
-	@rm -f ${DESTDIR}${PREFIX}/bin/stest
+	@rm -f $(DESTDIR)$(PREFIX)/bin/stest
-	@echo removing manual page from ${DESTDIR}${MANPREFIX}/man1
+	@echo removing manual page from $(DESTDIR)$(MANPREFIX)/man1
-	@rm -f ${DESTDIR}${MANPREFIX}/man1/dmenu.1
+	@rm -f $(DESTDIR)$(MANPREFIX)/man1/dmenu.1
-	@rm -f ${DESTDIR}${MANPREFIX}/man1/stest.1
+	@rm -f $(DESTDIR)$(MANPREFIX)/man1/stest.1
 
 .PHONY: all options clean dist install uninstall

config.mk

@@ -3,7 +3,7 @@ VERSION = 4.8
 
 # paths
 PREFIX = /usr/local
-MANPREFIX = ${PREFIX}/share/man
+MANPREFIX = $(PREFIX)/share/man
 
 X11INC = /usr/X11R6/include
 X11LIB = /usr/X11R6/lib
@@ -16,16 +16,16 @@ XINERAMAFLAGS = -DXINERAMA
 FREETYPELIBS = -lfontconfig -lXft
 FREETYPEINC = /usr/include/freetype2
 # OpenBSD (uncomment)
-#FREETYPEINC = ${X11INC}/freetype2
+#FREETYPEINC = $(X11INC)/freetype2
 
 # includes and libs
-INCS = -I${X11INC} -I${FREETYPEINC}
+INCS = -I$(X11INC) -I$(FREETYPEINC)
-LIBS = -L${X11LIB} -lX11 ${XINERAMALIBS} ${FREETYPELIBS}
+LIBS = -L$(X11LIB) -lX11 $(XINERAMALIBS) $(FREETYPELIBS)
 
 # flags
-CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_XOPEN_SOURCE=700 -D_POSIX_C_SOURCE=200809L -DVERSION=\"${VERSION}\" ${XINERAMAFLAGS}
+CPPFLAGS = -D_DEFAULT_SOURCE -D_BSD_SOURCE -D_XOPEN_SOURCE=700 -D_POSIX_C_SOURCE=200809L -DVERSION=\"$(VERSION)\" $(XINERAMAFLAGS)
-CFLAGS   = -std=c99 -pedantic -Wall -Os ${INCS} ${CPPFLAGS}
+CFLAGS   = -std=c99 -pedantic -Wall -Os $(INCS) $(CPPFLAGS)
-LDFLAGS  = -s ${LIBS}
+LDFLAGS  = -s $(LIBS)
 
 # compiler and linker
 CC = cc