Created BuildServices (asciidoc)

BuildServices.asciidoc

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+## Building Nim projects on Circle CI
+
+Building your code on Circle CI is useful to check regressions against the master and devel branches of Nim.
+Same for your code documentation.
+
+Configure the build:
+
+Under Test Commands >> Dependency Commands >> Pre-dependency commands:
+[source,sh]
+----
+wget http://http.us.debian.org/debian/pool/main/n/nim/nim_0.16.0-1_amd64.deb
+wget http://http.us.debian.org/debian/pool/main/o/openssl1.0/libssl1.0.2_1.0.2k-1_amd64.deb
+sudo dpkg -i *_amd64.deb
+----
+
+Under Test Commands >> Test Commands >> Test Commands:
+[source,sh]
+----
+# This will fetch Nimble dependencies
+nimble build -y
+nim c -r <mytest.nim>
+----
+
+Be aware that the available .deb packages will change over time.
+
+
+## Building Nim projects on Travis CI
+
+Building your code on Travis CI is useful to check regressions against the master and devel branches of Nim.
+Same for your code documentation.
+
+Detailed guide, which the following example originates from: +
+http://blaxpirit.com/blog/22/advanced-uses-of-travis-ci-with-nim.html[Advanced uses of Travis CI with Nim]
+
+If you don't want to rebuild the Nim compiler you can instead install the .deb packages listed on the CircleCI guide above using https://docs.travis-ci.com/user/installing-dependencies[this config]
+
+[source,yaml]
+----
+# Copied from https://github.com/nim-lang/Nim/wiki/TravisCI
+language: c
+env:
+  # Build and test against the master and devel branches of Nim
+  - BRANCH=master
+  - BRANCH=devel
+compiler:
+  # Build and test using both gcc and clang
+  - gcc
+  - clang
+matrix:
+  allow_failures:
+    # Ignore failures when building against the devel Nim branch
+    - env: BRANCH=devel
+  fast_finish: true
+install:
+  - |
+    if [ ! -x nim-$BRANCH/bin/nim ]; then
+      git clone -b $BRANCH --depth 1 git://github.com/nim-lang/nim nim-$BRANCH/
+      cd nim-$BRANCH
+      git clone --depth 1 git://github.com/nim-lang/csources csources/
+      cd csources
+      sh build.sh
+      cd ..
+      rm -rf csources
+      bin/nim c koch
+      ./koch boot -d:release
+    else
+      cd nim-$BRANCH
+      git fetch origin
+      if ! git merge FETCH_HEAD | grep "Already up-to-date"; then
+        bin/nim c koch
+        ./koch boot -d:release
+      fi
+    fi
+    cd ..
+before_script:
+    - export PATH="nim-$BRANCH/bin${PATH:+:$PATH}"
+script:
+    # Replace uppercase strings!
+    - nim c --cc:$CC --verbosity:0 -r MYFILE.nim
+    # Optional: build docs. 
+    - nim doc --docSeeSrcUrl:https://github.com/AUTHOR/MYPROJECT/blob/master --project MYFILE.nim
+cache:
+  directories:
+    - nim-master
+    - nim-devel
+branches:
+  except:
+    - gh-pages
+
+----
+