Will not compile with SDL for p7

Makefile

@@ -148,7 +148,7 @@ $(eval $(call make-binaryobj-rule,$(bin),$(obj)))))
 # Make a binary
 define make-binary-rules
  $1$(if $(FOR_WINDOWS),.exe): $(SRC_$1:%=$(OBJDIR)/$1/%.o) | $(OBJDIR)/$1
-	$(call bcmd,ld,$$@,$(LD) -o $$@ $$^ $(LDFLAGS))
+	$(call bcmd,ld,$$@,$(LD) -o $$@ $$^ $(LDFLAGS) $(LDFLAGSb_$1))
  all-$1: $1$(if $(FOR_WINDOWS),.exe)
 
  clean-$1:

Makefile.vars

@@ -14,9 +14,6 @@
 # Project name.
  NAME := p7utils
 
-# Required packages
- LIBS := libp7 sdl
-
 # Author information.
  MAINTAINER_NAME := Thomas \"Cakeisalie5\" Touhey
  MAINTAINER_MAIL := thomas@touhey.fr
@@ -64,15 +61,17 @@
 	-D MAINTAINER="$(MAINTAINER_NAME) <$(MAINTAINER_MAIL)>" \
 	-D DEFAULT_STORAGE="$(DEFAULT_STORAGE)" \
 	-D DEFAULT_ZOOM="$(DEFAULT_ZOOM)" \
-	$(shell $(PKGCONFIG) --cflags $(LIBS) 2>/dev/null) \
+	$(shell $(PKGCONFIG) --cflags libp7 sdl 2>/dev/null) \
 	$(CMOREFLAGS)
 
 # Linker
  LD := $(TARGET)gcc
 # - Specific linker flags
  LDFLAGS_Linux := -Wl,-z,relro
+# - Binary specific linker flags
+ LDFLAGSb_p7screen := $(shell $(PKGCONFIG) --libs sdl 2>/dev/null)
 # - Linker flags
- LDFLAGS := $(shell $(PKGCONFIG) --libs $(LIBS) 2>/dev/null) \
+ LDFLAGS := $(shell $(PKGCONFIG) --libs libp7 2>/dev/null) \
 	$(if $(FOR_WINDOWS),,$(LDFLAGS_Linux))
 
 # Raw ELF object maker