Make the Solidity repository standalone.

This commit is the culmination of several months of work to decouple Solidity from the webthree-umbrella so that it can be developed in parallel with cpp-ethereum (the Ethereum C++ runtime) and so that even for the Solidity unit-tests there is no hard-dependency onto the C++ runtime.

The Tests-over-IPC refactoring was a major step in the same process which was already committed.

This commit contains the following changes:

- A subset of the CMake functionality in webthree-helpers was extracted and tailored for Solidity into ./cmake.   Further cleanup is certainly possible.
- A subset of the libdevcore functionality in libweb3core was extracted and tailored for Solidity into ./libdevcore.   Further cleanup is certainly possible
- The gas price constants in EVMSchedule were orphaned into libevmasm.
- Some other refactorings and cleanups were made to sever unnecessary EVM dependencies in the Solidity unit-tests.
- TravisCI and Appveyor support was added, covering builds and running of the unit-tests (Linux and macOS only for now)
- A bug-fix was made to get the Tests-over-IPC running on macOS.
- There are still reliability issues in the unit-tests, which need immediate attention.    The Travis build has been flipped to run the unit-tests 5 times, to try to flush these out.
- The Emscripten automation which was previously in webthree-umbrella was merged into the TravisCI automation here.
- The development ZIP deployment step has been commented out, but we will want to read that ONLY for release branch.

Further iteration on these changes will definitely be needed, but I feel these have got to sufficient maturity than holding them back further isn't winning us anything.    It is go time :-)

1 files changed, 35 insertions, 0 deletions

diff --git a/cmake/EthPolicy.cmake b/cmake/EthPolicy.cmake
new file mode 100644
index 00000000..31b09f15
--- /dev/null
+++ b/cmake/EthPolicy.cmake
@@ -0,0 +1,35 @@
+# it must be a macro cause policies have scopes
+# http://www.cmake.org/cmake/help/v3.0/command/cmake_policy.html
+macro (eth_policy)
+	# link_directories() treats paths relative to the source dir.
+	cmake_policy(SET CMP0015 NEW)
+
+	# let cmake autolink dependencies on windows
+	cmake_policy(SET CMP0020 NEW)
+
+	# CMake 2.8.12 and lower allowed the use of targets and files with double
+	# colons in target_link_libraries,
+	cmake_policy(SET CMP0028 OLD)
+
+	if (${CMAKE_VERSION} VERSION_GREATER 3.0)
+
+		# fix MACOSX_RPATH
+		cmake_policy(SET CMP0042 OLD)
+
+		# ignore COMPILE_DEFINITIONS_<Config> properties
+		cmake_policy(SET CMP0043 OLD)
+
+		# allow VERSION argument in project()
+		cmake_policy(SET CMP0048 NEW)
+
+	endif()
+
+	if (${CMAKE_VERSION} VERSION_GREATER 3.1)
+		
+		# do not interpret if() arguments as variables!
+		cmake_policy(SET CMP0054 NEW)
+
+	endif()
+
+endmacro()
+