[pmg-devel] [RFC pmg-yew-quarantine-gui 1/2] buildsys: initialize pwt-assets as submodule automatically

[Stoiko Ivanov]

The error-message for the missing submodule and prerequisite is clear,
but due to parallel make - it gets printed, before the rustc output -
and is thus not visible when the build fails.

inspired by our zfsonlinux git:
 63bd3935c (ensure submodule gets initialized on fresh clone and build).

but instead of letting BUILDDIR depend on pwt-assets/README.md it
depends on the PHONY target (as this will evaluated anyways - and
short-circuit if the README.md exists)

Signed-off-by: Stoiko Ivanov <s.ivanov at proxmox.com>
---
 Makefile | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/Makefile b/Makefile
index fdf046c..72937c0 100644
--- a/Makefile
+++ b/Makefile
@@ -66,8 +66,11 @@ install: $(COMPILED_OUTPUT) pmg-mobile-index.html.tt
 	install -m0644 dist/mobile-yew-style.css $(DESTDIR)$(UIDIR)/css
 	install -m0644 pmg-mobile-index.html.tt $(DESTDIR)$(UIDIR)
 
+.PHONY: submodule
+submodule:
+	test -f "pwt-assets/README.md" || git submodule update --init
 
-$(BUILDDIR):
+$(BUILDDIR): submodule
 	rm -rf $@ $@.tmp
 	mkdir -p $@.tmp
 	cp -a debian/ src/ pwt-assets/ images/ pmg-mobile-index.html.tt Makefile Cargo.toml $@.tmp
-- 
2.47.3