docs: disable PDF docs when latex _isn't_ present

diff --git a/mk/docs.mk b/mk/docs.mk
index 71b253379aa01961e67032518d94c0cc4af70a06..2a5a847d2a42508e4e8caa20a0eea284d9eccefa 100644 (file)
--- a/mk/docs.mk
+++ b/mk/docs.mk
@@ -87,7 +87,7 @@ endif
 
 # Check for xelatex
 
-ifeq ($(CFG_XELATEX),)
+ifneq ($(CFG_XELATEX),)
     CFG_LATEX := $(CFG_XELATEX)
     XELATEX = 1
   else