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-rw-r--r--Build/source/README.hacking6
1 files changed, 3 insertions, 3 deletions
diff --git a/Build/source/README.hacking b/Build/source/README.hacking
index 51e0bfd773b..9d3154aec51 100644
--- a/Build/source/README.hacking
+++ b/Build/source/README.hacking
@@ -65,9 +65,9 @@ where KPSE_ENABLE_PROG, defined in m4/kpse-setup.m4, has one required
argument -- the name of the subdirectory -- and three optional arguments: a
list of required TL libraries (zlib is implied by libpng and need not be
mentioned), a list of options ('disable' if this program is not to be built
-by default, 'native' if cross compilation is not possible), and a comment
-added to the help text for the disable or enable configure option for this
-program.
+by default, 'native' if cross compilation is not possible, 'x' if this
+program requires X11), and a comment added to the help text for the disable
+or enable configure option for this program.
3.2 Adding a new generic library directory
------------------------------------------