Other BSD Make

[doa379]

Consider the following Makefile.

In an attempt to create a uniform file that works with both GNU and BSD, the attempt failed.

Ok let's stick with a purely BSD working solution. I want the Makefile to achieve two objectives:

1. Source and Object files are to be in different sub/directories
2. In addition to the default target I want to establish a second, debug target.

Writing everything out explicitly this is what I have:

OBJ=obj/dummy0.o obj/dummy1.o
OBJ_DBG=obj/dummy0~dbg.o obj/dummy1~dbg.o

all: dummy
dbg: dummy_dbg

dummy_dbg: $(OBJ_DBG)
  @echo "Link with Debug..."
  @echo $(OBJ_DBG) "-->" $@~dbg

obj/dummy0~dbg.o: src/dummy0.x
  @echo Build Debug $< $@

obj/dummy1~dbg.o: src/dummy1.x
  @echo Build Debug $< $@

dummy: $(OBJ)
  @echo Link with Release...
  @echo $(OBJ) "-->" $@

obj/dummy0.o: src/dummy0.x
  @echo Build Release $< $@

obj/dummy1.o: src/dummy1.x
  @echo Build Release $< $@

clean:
  @echo Cleaning...
  rm -f obj/*.o

It is still not entirely correct because

$<

doesn't expand the inputs.

The expansion has the following template:

all: dummy
dummy: $(OBJ)
$(OBJ): $(SRC)
   @............

.SUFFIXES

and

.x.o

notion doesn't seem to work because files and targets are not in the same directory.
If I define the list

SRC

how can I get make to operate on each element of the list??

 

[doa379]

The GNU solution works just as intended. So this is what I'm trying to do. Of-course this will not build using BSD Make.

SRC = $(wildcard src/*.x)
OBJ = $(SRC:src/%.x=obj/%.o)

FLAG=Release
EXECFLAG =

all: dummy

dbg: FLAG = Debug
dbg: EXECFLAG = ~dbg
dbg: dummy

dummy: $(OBJ)
  @echo Linking $(FLAG)...
  @echo $^
  @echo $@$(EXECFLAG)

obj/%.o: src/%.x
  @echo Build $(FLAG)...
  @echo $< "-->" $@

clean:
  @echo Cleaning...
  rm -f obj/*.o

 

[doa379]

A working solution, something along these lines:

SRC=dummy0.x dummy1.x
OBJ=${SRC:S/.x/.o/g}
OBJ_DBG:=${SRC:S/.x/~dbg.o/g}

.OBJDIR: obj

all: dummy

dummy: ${OBJ}
  $(cd obj/)
  @echo Link Release $(OBJ) -o ../$@
  $(cd ..)

$(OBJ):
  @echo Build Release src/$(@:S/.o/.x/) "-->" $(.OBJDIR)/$@

dbg: dummy_dbg

dummy_dbg: $(OBJ_DBG)
  $(cd obj/)
  @echo Link Debug $(OBJ_DBG) -o ../$@
  $(cd ..)

$(OBJ_DBG):
  @echo Build Debug src/$(@:S/.o/.x/:S/~dbg//) "-->" $(.OBJDIR)/$@

Encourage critique.