Merge pull request #7006 from ethereum/docs-min-compiler

[DOCS] Add minimum compiler versions

docs/installing-solidity.rst

@@ -208,6 +208,15 @@ The following are dependencies for all builds of Solidity:
 
     Starting from 0.5.10 linking against Boost 1.70+ should work without manual intervention.
 
+Minimum compiler versions
+^^^^^^^^^^^^^^^^^^^^^^^^^
+
+The following C++ compilers and their minimum versions can build the Solidity codebase:
+
+- `GCC <https://gcc.gnu.org>`_, version 5+
+- `Clang <https://clang.llvm.org/>`_, version 3.4+
+- `MSVC <https://docs.microsoft.com/en-us/cpp/?view=vs-2019>`_, version 2017+
+
 Prerequisites - macOS
 ---------------------