gh-139588: Fix nondeterministic `make latex` doc build under parallel make (#151343)

diff --git a/Doc/Makefile b/Doc/Makefile
index 60970d50833f147b21fbeca77c394b43bf8673aa..d77ece1e681bcfcd0c0f6ecdd1c5c7d5bda18ec0 100644 (file)
--- a/Doc/Makefile
+++ b/Doc/Makefile
@@ -88,9 +88,9 @@ htmlhelp: build
              "build/htmlhelp/pydoc.hhp project file."
 
 .PHONY: latex
-latex: _ensure-sphinxcontrib-svg2pdfconverter
 latex: BUILDER = latex
-latex: build
+latex: _ensure-sphinxcontrib-svg2pdfconverter
+       $(MAKE) build BUILDER=$(BUILDER)
        @echo "Build finished; the LaTeX files are in build/latex."
        @echo "Run \`make all-pdf' or \`make all-ps' in that directory to" \
              "run these through (pdf)latex."