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Gnu make "clean" only removes .c files in OBJ/ASM variables

I am trying to remove all .o , .i , .asm , .d files stored in variables in this form :

OBJS := $(SRCS:.c=.o)
PP := $(SRCS:.c=.i)
ASM := $(SRCS:.c=.asm)
DEP := $(SRCS:.c=.d)

using this code :

SRCS = text1.c\
       text2.c
      

OBJS :=$(SRCS:.c=.o)
PP := $(SRCS:.c =.i)
ASM := $(SRCS:.c =.asm)
DEP := $(SRCS:.c =.d)


.PHONY : clean
clean :
    rm -f $(OBJS) $(PP) $(ASM) $(DEP)

but it only applies the .o to the $(OBJS) like this :

rm -f text1.o text2.o text1.c text2.c text1.c text2.c text1.c text2.c

I don't understand why it didn't replace *.c files with *.i or *.asm and so on .

I used this to solve it :

.PHONY: clean
clean:
    rm -f *.o *.i *.asm *.d

but i am still learning "make" so i would like to know why the first is not working .. thank u in advance.

Solution

  • You cannot have spaces in after the equals otherwise it tries to match with the spaces in the name.

    Here is a fixed version:

    SRCS = text1.c text2.c

OBJS := $(SRCS:.c=.o)
PP   := $(SRCS:.c=.i)
ASM  := $(SRCS:.c=.asm)
DEP  := $(SRCS:.c=.d)

# Note this does not match due to the extra space
PP2   := $(SRCS:.c =.i)

.PHONY : clean
clean :
    rm -f $(OBJS) $(PP) $(ASM) $(DEP)