Merge pull request ethereum#13880 from ethereum/allow-older-boost-sup…

…port

Allow support for older boost and adjust docs

docs/installing-solidity.rst

@@ -319,9 +319,10 @@ The following are dependencies for all builds of Solidity:
 +-----------------------------------+-------------------------------------------------------+
 | Software                          | Notes                                                 |
 +===================================+=======================================================+
-| `CMake`_ (version 3.13+)          | Cross-platform build file generator.                  |
+| `CMake`_ (version 3.21.3+ on      | Cross-platform build file generator.                  |
+| Windows, 3.13+ otherwise)         |                                                       |
 +-----------------------------------+-------------------------------------------------------+
-| `Boost`_ (version 1.77+ on        | C++ libraries.                                        |
+| `Boost`_ (version 1.77 on         | C++ libraries.                                        |
 | Windows, 1.65+ otherwise)         |                                                       |
 +-----------------------------------+-------------------------------------------------------+
 | `Git`_                            | Command-line tool for retrieving source code.         |
@@ -408,7 +409,7 @@ You need to install the following dependencies for Windows builds of Solidity:
 +-----------------------------------+-------------------------------------------------------+
 | `Visual Studio 2019`_  (Optional) | C++ compiler and dev environment.                     |
 +-----------------------------------+-------------------------------------------------------+
-| `Boost`_ (version 1.77+)          | C++ libraries.                                        |
+| `Boost`_ (version 1.77)           | C++ libraries.                                        |
 +-----------------------------------+-------------------------------------------------------+
 
 If you already have one IDE and only need the compiler and libraries,

libsolidity/lsp/LanguageServer.cpp

@@ -220,8 +220,12 @@ vector<boost::filesystem::path> LanguageServer::allSolidityFilesFromProject() co
 
 	// We explicitly decided against including all files from include paths but leave the possibility
 	// open for a future PR to enable such a feature to be optionally enabled (default disabled).
-
+	// Note: Newer versions of boost have deprecated symlink_option::recurse
+#if (BOOST_VERSION < 107200)
+	auto directoryIterator = fs::recursive_directory_iterator(m_fileRepository.basePath(), fs::symlink_option::recurse);
+#else
 	auto directoryIterator = fs::recursive_directory_iterator(m_fileRepository.basePath(), fs::directory_options::follow_directory_symlink);
+#endif
 	for (fs::directory_entry const& dirEntry: directoryIterator)
 		if (
 			dirEntry.path().extension() == ".sol" &&

libsolutil/Common.h

@@ -41,9 +41,6 @@
 #include <libsolutil/vector_ref.h>
 
 #include <boost/version.hpp>
-#if (BOOST_VERSION < 106500)
-#error "Unsupported Boost version. At least 1.65 required."
-#endif
 
 #include <map>
 #include <utility>

libsolutil/Numeric.h

@@ -25,9 +25,6 @@
 #include <libsolutil/CommonData.h>
 
 #include <boost/version.hpp>
-#if (BOOST_VERSION < 106500)
-#error "Unsupported Boost version. At least 1.65 required."
-#endif
 
 // TODO: do this only conditionally as soon as a boost version with gcc 12 support is released.
 #if defined(__GNUC__) && !defined(__clang__) && (__GNUC__ >= 12)