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-rw-r--r--toc/Makefile6
1 files changed, 4 insertions, 2 deletions
diff --git a/toc/Makefile b/toc/Makefile
index d6d2a6e..2cc92ac 100644
--- a/toc/Makefile
+++ b/toc/Makefile
@@ -1,5 +1,7 @@
+TROFF ?= groff -Tps
+
README.pdf: README.t toc.tmac toc
- <README.t ./toc groff -Tps | ps2pdf - > README.pdf
+ <README.t ./toc $(TROFF) | ps2pdf - > README.pdf
example.pdf: example.t toc.tmac toc
- <example.t ./toc groff -Tps | ps2pdf - > example.pdf
+ <example.t ./toc $(TROFF) | ps2pdf - > example.pdf