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-rw-r--r--doc/tablegen.txt1
1 files changed, 1 insertions, 0 deletions
diff --git a/doc/tablegen.txt b/doc/tablegen.txt
index 8dfcd7d354..6fd0ae9a41 100644
--- a/doc/tablegen.txt
+++ b/doc/tablegen.txt
@@ -12,6 +12,7 @@ the tables as a header file using the tableprint.h helpers.
Both of these files will be compiled for the host system, so to avoid
breakage with cross-compilation neither of them may include, directly
or indirectly, config.h or avconfig.h.
+This means that e.g. libavutil/mathematics.h is ok but libavutil/libm.h is not.
Due to this, the .c file or Makefile may have to provide additional defines
or stubs, though if possible this should be avoided.
In particular, CONFIG_HARDCODED_TABLES should always be defined to 0.