implement a build script

Signed-off-by: RJ Catalano <rj@monax.io>

.travis.yml

@@ -148,11 +148,7 @@ install:
     - echo -n "$TRAVIS_COMMIT" > commit_hash.txt
 before_script:
     - test $TRAVIS_EMSCRIPTEN != On || ./scripts/build_emscripten.sh
-    - test $TRAVIS_RELEASE != On || (mkdir -p build
+    - test $TRAVIS_RELEASE != On || (./scripts/build.sh $TRAVIS_BUILD_TYPE
-      && cd build
-      && cmake .. -DCMAKE_BUILD_TYPE=$TRAVIS_BUILD_TYPE
-      && make -j2
-      && cd ..
       && ./scripts/release.sh $ZIP_SUFFIX
       && ./scripts/create_source_tarball.sh )
 script:

docs/installing-solidity.rst

@@ -198,7 +198,13 @@ Building Solidity is quite similar on Linux, macOS and other Unices:
     cd build
     cmake .. && make
 
-And even on Windows:
+or even easier:
+
+.. code:: bash
+
+    ./scripts/build.sh
+
+And even for Windows:
 
 .. code:: bash
 
@@ -251,4 +257,4 @@ Example:
 3. a breaking change is introduced - version is bumped to 0.5.0
 4. the 0.5.0 release is made
 
-This behaviour works well with the version pragma.
+This behaviour works well with the version pragma.

scripts/build.sh

@@ -0,0 +1,17 @@
+#!/usr/bin/env bash
+
+if [ -z "$1" ]; then 
+    BUILD_TYPE=Release
+else 
+    BUILD_TYPE="$1"
+fi
+
+cd $(dirname "$0")
+mkdir -p build
+cd build
+cmake .. -DCMAKE_BUILD_TYPE="$BUILD_TYPE"
+make -j2
+
+if [ -z $CI ]; then
+	install solc/solc /usr/local/bin && install test/soltest /usr/local/bin
+fi