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-rw-r--r--doc/build-unix.md7
1 files changed, 7 insertions, 0 deletions
diff --git a/doc/build-unix.md b/doc/build-unix.md
index 31159d44b1..b957baa91c 100644
--- a/doc/build-unix.md
+++ b/doc/build-unix.md
@@ -52,6 +52,13 @@ Licenses of statically linked libraries:
- protobuf 2.5.0
- libqrencode 3.2.0
+System requirements
+--------------------
+
+C++ compilers are memory-hungry. It is recommended to have at least 1 GB of
+memory available when compiling Bitcoin Core. With 512MB of memory or less
+compilation will take much longer due to swap thrashing.
+
Dependency Build Instructions: Ubuntu & Debian
----------------------------------------------
Build requirements: