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-rw-r--r--Documentation/howto-build-sys.txt3
1 files changed, 3 insertions, 0 deletions
diff --git a/Documentation/howto-build-sys.txt b/Documentation/howto-build-sys.txt
index 22ae8fc6f..53566140e 100644
--- a/Documentation/howto-build-sys.txt
+++ b/Documentation/howto-build-sys.txt
@@ -10,6 +10,9 @@ util-linux build system
...
endif
+ - "if BUILD_<NAME>" blocks are never nested within another "if BUILD_<NAME>",
+ all dependencies have to be resolved in configure.ac (see UL_REQUIRES_BUILD())
+
- all BUILD_<NAME> in configure.am are always based on build_<name> variables,
for example: