It turns out that recipes in epstopdf-rule.mk work reasonably well and is quicker than those in a2ping-rule.mk on most build environments tested so far. So promote epstopdf-rule.mk as the default by inverting the conditional. a2ping-rule.mk can still be enabled by setting a make variable "USE_A2PING" as follows: make USE_A2PING=1 , when you need to compare the two sets of recipes. Signed-off-by: Akira Yokosawa <akiyks@xxxxxxxxx> --- Makefile | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/Makefile b/Makefile index 6083cda4..0702fdb7 100644 --- a/Makefile +++ b/Makefile @@ -417,7 +417,7 @@ endif @sh $(FIXANEPSFONTS) $@ # .eps --> .pdf rules -ifndef NO_A2PING +ifdef USE_A2PING include a2ping-rule.mk else include epstopdf-rule.mk -- 2.17.1