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-rw-r--r--BUILDING.txt1
1 files changed, 1 insertions, 0 deletions
diff --git a/BUILDING.txt b/BUILDING.txt
index f5ed717b..65187b2f 100644
--- a/BUILDING.txt
+++ b/BUILDING.txt
@@ -130,6 +130,7 @@ http://fltk.org/str.php?L2860
5. When building TigerVNC, set the FLTK_FLUID_EXECUTABLE CMake variable to the
location of the fluid executable that was built in Step 3 or installed in
Step 4. This gives CMake a hint as to where to find the FLTK library.
+
6. If you did not install FLTK, then set the FLTK_INCLUDE_DIR CMake variable to
the location of the FLTK source directory.