Latex Makefile does not see changes in include files

I had a Makefile template to generate my latex documents, but there is an issue I don't understand...

My main latex file include other latex files located in ./includes/. The thing is whenever I make a modification in one of these files MAKE just don't see it and won't recompile.

The relevant part of the Makefile is this :

DOC ?= report.tex
PDF := $(DOC:.tex=.pdf)

INCLUDES ?=

IMG_DIRS ?= img

IMG_FILES := $(wildcard $(IMG_DIRS)/*.svg $(IMG_DIRS)/*.png)

IMG_EPS := $(patsubst %svg, %eps, $(patsubst %png, %eps, $(IMG_FILES)))

all: pdf

pdf: $(DOC) $(INCLUDES) $(BIBLIOS) $(STYLES) $(IMG_FILES) $(IMG_EPS) $(PDF)

%pdf: %tex
    $(TEX) '$(PWD)/$<'
    $(BIB) '$(PWD)/$(shell basename $(DOC) .tex)'
    $(TEX) '$(PWD)/$<'
    $(TEX) '$(PWD)/$<'

$(INCLUDES) is a dependency for the mane target so it should recompile. I have tried many configurations with the same result.

There is just som开发者_开发知识库ething I'm missing, thanks to enlighten me.

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Your $(INCLUDES) variable expands to nothing (it is empty). It should contain a list of files included by the .pdf.

The following initializes it with all .tex files from includes/ directory:

INCLUDES := $(wildcard includes/*.tex)