metadata/code: Add explicit dependency on core spec latex build for aux file

Author: yuri91

.github/workflows/ci-spec.yml

@@ -72,6 +72,7 @@ jobs:
 
   build-code-metadata-spec:
     runs-on: ubuntu-latest
+    needs: [build-core-spec]
     steps:
       - name: Checkout repo
         uses: actions/checkout@v2

document/metadata/code/Makefile

@@ -255,23 +255,30 @@ epub3:
 	@echo
 	@echo "Build finished. The epub3 file is in $(BUILDDIR)/epub3."
 
+
+.PHONY: latex-core-aux
+latex-core-aux:
+	(cd ../../core; make BUILDDIR=$(BUILDDIR) latexpdf)
+	mkdir -p $(BUILDDIR)/latex
+	cp ../../core/$(BUILDDIR)/latex/WebAssembly.aux $(BUILDDIR)/latex/
+
 .PHONY: latex
-latex:
+latex: latex-core-aux
 	$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
 	@echo
 	@echo "Build finished; the LaTeX files are in $(BUILDDIR)/latex."
 	@echo "Run \`make' in that directory to run these through (pdf)latex" \
 	      "(use \`make latexpdf' here to do that automatically)."
 
 .PHONY: latexpdf
-latexpdf:
+latexpdf: latex-core-aux
 	$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
 	@echo "Running LaTeX files through pdflatex..."
 	$(MAKE) -C $(BUILDDIR)/latex LATEXMKOPTS=" </dev/null" all-pdf >$(BUILDDIR)/latex/LOG 2>&1 || cat $(BUILDDIR)/latex/LOG
 	@echo "pdflatex finished; the PDF files are in $(BUILDDIR)/latex."
 
 .PHONY: latexpdfja
-latexpdfja:
+latexpdfja: latex-core-aux
 	$(SPHINXBUILD) -b latex $(ALLSPHINXOPTS) $(BUILDDIR)/latex
 	@echo "Running LaTeX files through platex and dvipdfmx..."
 	$(MAKE) -C $(BUILDDIR)/latex all-pdf-ja

document/metadata/code/conf.py

@@ -296,7 +296,7 @@
 
    # Additional stuff for the LaTeX preamble.
    # Don't type-set cross references with emphasis.
-   'preamble': '\\renewcommand\\sphinxcrossref[1]{#1}\n\\externaldocument[Core-]{'+core_dir+'/_build/latex/WebAssembly}[https://webassembly.github.io//'+repo+'/core/_download/WebAssembly.pdf]\n',
+   'preamble': '\\renewcommand\\sphinxcrossref[1]{#1}\n\\externaldocument[Core-]{WebAssembly}[https://webassembly.github.io//'+repo+'/core/_download/WebAssembly.pdf]\n',
 
    # Latex figure (float) alignment
   'figure_align': 'htbp',