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Jan 29, 2016
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doc: add example for building with constrained resources #7423

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11 changes: 7 additions & 4 deletions doc/build-unix.md
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Expand Up @@ -50,12 +50,15 @@ Optional dependencies:

For the versions used in the release, see [release-process.md](release-process.md) under *Fetch and build inputs*.

System requirements
Memory 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.
C++ compilers are memory-hungry. It is recommended to have at least 1.5 GB of
memory available when compiling Bitcoin Core. On systems with less, gcc can be
tuned to conserve memory with additional CXXFLAGS:


./configure CXXFLAGS="--param ggc-min-expand=1 --param ggc-min-heapsize=32768"

Dependency Build Instructions: Ubuntu & Debian
----------------------------------------------
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