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@@ -56,6 +56,12 @@ to download and install any of them separately from source. In particular, we
emphatically recommend against trying to install GTK, Cairo, Pango or
gdk-pixbuf from source.
+If libccp4 is not available on the system and you compile using Meson, then
+libccp4 will be downloaded and compiled automatically. If you don't want this,
+add option `--wrap-mode=nofallback` when invoking Meson. See the Meson manual
+for other possibilities, such as using locally-provided files instead of
+downloading them.
+
We also do not recommend using dependencies from Conda/Anaconda. Do not
activate any Conda environment before compiling CrystFEL, not even the "base"
environment. Don't even "source" the Conda setup file before installing