dblatex with miktex under msys/mingw can't build the PS and PDF docs,
and just building the HTML docs is sufficient to check that the
markup is correct, so we turn off PS and PDF doc building when
validating.
CHECK_PACKAGES = YES
+# dblatex with miktex under msys/mingw can't build the PS and PDF docs,
+# and just building the HTML docs is sufficient to check that the
+# markup is correct, so we turn off PS and PDF doc building when
+# validating.
+BUILD_DOCBOOK_PS = NO
+BUILD_DOCBOOK_PDF = NO
+
ifeq "$(ValidateHpc)" "YES"
GhcStage2HcOpts += -fhpc -hpcdir $(TOP)/testsuite/hpc_output/
endif