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-rw-r--r--config.mk.in6
1 files changed, 6 insertions, 0 deletions
diff --git a/config.mk.in b/config.mk.in
index b63831aa..ee692332 100644
--- a/config.mk.in
+++ b/config.mk.in
@@ -161,6 +161,12 @@ LEX = flex
 # 
 # LEX = lex
 
+# PKG_CONFIG is the beginning of a shell command that tells things about how
+# some package (e.g. the PNG library) is installed on the build system.  For
+# example, it can tell what link options you need to link the PNG library to a
+# program.
+PKG_CONFIG = pkg-config
+
 # C compiler options 
 
 # gcc: