Don't rebuild Limine on every devel build

aux/devel.sh

@@ -8,7 +8,7 @@ if [ "$1" = "debug" ]; then
   bt="buildtype=debug"
 fi
 
-make -B all_limine
+make all_limine
 make -B all_lz4
 make -B all_kernel        "$bt"
 make -B all_libu          "$bt"

make/limine.mk

@@ -4,9 +4,12 @@ LIMINE_OPTS=--enable-bios-cd \
 						--enable-uefi-ia32 \
 						--enable-uefi-cd
 
-all_limine:
-	rm -rf build_limine && \
-	mkdir -p build_limine && \
+all_limine: build_limine/bin
+
+build_limine:
+	mkdir -p build_limine
+
+build_limine/bin: | build_limine
 		cd build_limine && \
 		../Limine/bootstrap && \
 		../Limine/configure $(LIMINE_OPTS) && \
@@ -14,5 +17,4 @@ all_limine:
 		rm -rf ../boot/limine && \
 		cp -r ./bin ../boot/limine
 
-
 .PHONY: all_limine