build-sys: Use $(MAKE) instead of make
This ensures that we pass options down to the child `make`,
including the jobserver, etc.  Quiets a warning output
during build about this.
@@ -52,7 +52,7 @@ clean:
find . -name "__pycache__" -type d | xargs rm -rf
mantle:
- cd mantle && make
+ cd mantle && $(MAKE)
install:
install -d $(DESTDIR)$(PREFIX)/lib/coreos-assembler
@@ -64,4 +64,4 @@ install:
ln -sf ../lib/coreos-assembler/coreos-assembler $(DESTDIR)$(PREFIX)/bin/
ln -sf ../lib/coreos-assembler/cp-reflink $(DESTDIR)$(PREFIX)/bin/
ln -sf coreos-assembler $(DESTDIR)$(PREFIX)/bin/cosa
- cd mantle && make install DESTDIR=$(DESTDIR)
+ cd mantle && $(MAKE) install DESTDIR=$(DESTDIR)
