Add .deps-obtained file to track whether deps were gotten

.gitignore

@@ -1,4 +1,3 @@
-/kernel-deps
 /limine
 /ovmf
 *.iso

GNUmakefile

@@ -156,12 +156,11 @@ limine/limine:
 		LDFLAGS="$(HOST_LDFLAGS)" \
 		LIBS="$(HOST_LIBS)"
 
-kernel-deps:
+kernel/.deps-obtained:
 	./kernel/get-deps
-	touch kernel-deps
 
 .PHONY: kernel
-kernel: kernel-deps
+kernel: kernel/.deps-obtained
 	$(MAKE) -C kernel
 
 $(IMAGE_NAME).iso: limine/limine kernel

kernel/.gitignore

@@ -1,5 +1,6 @@
 /compile_commands.json
 /.cache
+/.deps-obtained
 /freestnd-c-hdrs
 /cc-runtime
 /limine-protocol

kernel/GNUmakefile

@@ -56,8 +56,8 @@ endif
 LDFLAGS :=
 
 # Ensure the dependencies have been obtained.
-ifneq ($(shell ( test '$(MAKECMDGOALS)' = clean || test '$(MAKECMDGOALS)' = distclean ); echo $$?),0)
-    ifeq ($(shell ( ! test -d freestnd-c-hdrs || ! test -d cc-runtime || ! test -d limine-protocol ); echo $$?),0)
+ifneq ($(filter-out clean distclean,$(MAKECMDGOALS)),)
+    ifeq ($(wildcard .deps-obtained),)
         $(error Please run the ./get-deps script first)
     endif
 endif
@@ -224,7 +224,7 @@ clean:
 # Remove everything built and generated including downloaded dependencies.
 .PHONY: distclean
 distclean:
-	rm -rf bin-* obj-* freestnd-c-hdrs cc-runtime limine-protocol
+	rm -rf bin-* obj-* .deps-obtained freestnd-c-hdrs cc-runtime limine-protocol
 
 # Install the final built executable to its final on-root location.
 .PHONY: install

kernel/get-deps

@@ -1,6 +1,6 @@
 #! /bin/sh
 
-set -ex
+set -e
 
 srcdir="$(dirname "$0")"
 test -z "$srcdir" && srcdir=.
@@ -16,7 +16,6 @@ clone_repo_commit() {
         fi
     else
         if test -d "$2"; then
-            set +x
             echo "error: '$2' is not a Git repository" 1>&2
             exit 1
         fi
@@ -30,6 +29,8 @@ clone_repo_commit() {
     fi
 }
 
+rm -f .deps-obtained
+
 clone_repo_commit \
     https://github.com/osdev0/freestnd-c-hdrs-0bsd.git \
     freestnd-c-hdrs \
@@ -45,6 +46,6 @@ clone_repo_commit \
     limine-protocol \
     fedf97facd1c473ee8720f8dfd5a71d03490d928
 
-set +x
+touch .deps-obtained
 
-printf "\nDependencies obtained successfully!\n"
+printf "\nDependencies obtained successfully.\n"