cut down on travis testing a bit to make it quicker (#1660)

cut down on travis testing a bit to make it quicker

.travis.yml

@@ -3,19 +3,19 @@ language: cpp
 matrix:
   fast_finish: true
   include:
-    - env: variant=test_barebones toolset=gcc lint=1
+    - env: variant=test_debug lint=1 tests=1 toolset=gcc-sanitizer
     - env: variant=test_debug sim=1 ssl=openssl crypto=libcrypto toolset=gcc-sanitizer
-    - env: variant=test_release coverage=1 toolset=gcc-coverage
+    - env: variant=test_release coverage=1 tests=1 toolset=gcc-coverage python=1
     - env: autotools=1 toolset=gcc
     - os: osx
       osx_image: xcode6.4
-      env: variant=test_release docs=1 toolset=darwin
+      env: variant=test_release docs=1 tests=1 toolset=darwin
     - os: osx
       osx_image: xcode6.4
-      env: variant=test_debug ssl=openssl crypto=libcrypto toolset=darwin
+      env: variant=test_debug ssl=openssl tests=1 crypto=libcrypto toolset=darwin
     - os: osx
       osx_image: xcode6.4
-      env: variant=test_barebones toolset=darwin
+      env: variant=test_barebones tools=1 examples=1 toolset=darwin python=1
     - dist: trusty
       env: arch=arm toolset=gcc-arm
 
@@ -51,7 +51,10 @@ before_install:
   - git submodule update --init --recursive
   - 'if [[ $ssl == "" ]]; then export ssl=off; fi'
   - 'if [[ $crypto == "" ]]; then export crypto=built-in; fi'
-  - 'if [[ $TRAVIS_OS_NAME == "osx" && "$variant" != "" ]]; then brew update > /dev/null && brew install --quiet ccache boost-build boost-python; fi'
+  - 'if [[ $TRAVIS_OS_NAME == "osx" && ( "$tests" == "1" || "$sim" == 1 || "$examples" == "1" || "$tools" == "1" || "$python" == "1" ) ]]; then
+    brew update > /dev/null && brew install --quiet ccache boost-build;
+    fi'
+  - 'if [[ $TRAVIS_OS_NAME == "osx" && "$python" == "1" ]]; then brew update > /dev/null && brew install --quiet boost-python; fi'
   - 'if [ "$docs" = "1" ]; then
     brew install --quiet docutils;
     mkdir -p /Users/travis/Library/Python/2.7/lib/python/site-packages;
@@ -65,7 +68,6 @@ before_install:
   - if [ "$coverage" == "1" ]; then
     pip install --user codecov;
     fi
-  - 'if [[ $toolset == "gcc-sanitizer" ]]; then export test_args=testing.arg="--no-stderr-redirect"; fi'
   - 'echo "toolset: " ${toolset}'
   - 'echo "variant: " ${variant}'
 # disable leak checking for now. it reports some suspicious reports against some
@@ -101,10 +103,9 @@ install:
   - if [ "$docs" == "1" ]; then rst2html.py --version; fi
   - 'if [ "$lint" == "1" ]; then curl "https://raw.githubusercontent.com/google/styleguide/71ec7f1e524969c19ce33cfc72e8e023f2b98ee2/cpplint/cpplint.py" >~/cpplint.py; fi'
 
-# osx builds need to disable the deprecated warning because of the openssl
-# shipping with the system having marked all functions as deprecated. Since
-# we're building with -Werror, we can't have those warnings
-  - 'if [[ "$variant" != "" ]]; then ccache -V && ccache --show-stats && ccache --zero-stats; fi'
+  - ccache -V
+  - ccache --show-stats
+  - ccache --zero-stats
 
   - 'if [[ "$arch" == "arm" ]]; then
       cd test;
@@ -135,25 +136,24 @@ script:
       python ~/cpplint.py --extensions=cpp --headers=hpp --filter=-,+runtime/explicit,+whitespace/end_of_line --linelength=90 test/*.{cpp,hpp} src/*.cpp include/libtorrent/*.hpp include/libtorrent/kademlia/*.hpp src/kademlia/*.cpp include/libtorrent/aux_/*.hpp include/libtorrent/extensions/*.hpp simulation/*.{cpp,hpp} tools/*.{cpp,hpp} examples/*.{cpp,hpp};
     fi'
 
-# if variant is not set, we do not want to build anything
 # if we are building with code coverage, report it as soon as possible
 # libtorrent is the name of the test suite target
   - cd test
-  - 'if [ "$variant" != "" ]; then
-      travis_retry bjam -j3 warnings-as-errors=on ssl=$ssl crypto=$crypto debug-iterators=on picker-debugging=on invariant-checks=full $toolset variant=$variant $test_args libtorrent test_natpmp enum_if -l300 &&
+  - 'if [ "$tests" == "1" ]; then
+      travis_retry bjam -j3 warnings-as-errors=on ssl=$ssl crypto=$crypto debug-iterators=on picker-debugging=on invariant-checks=full $toolset variant=$variant libtorrent test_natpmp enum_if -l300 &&
       if [ "$coverage" == "1" ]; then
         codecov --root .. --gcov-exec gcov-5;
       fi;
     fi'
 
   - cd ../examples
-  - 'if [ "$variant" != "" ]; then
+  - 'if [ "$examples" == "1" ]; then
       bjam -j3 warnings-as-errors=on ssl=$ssl crypto=$crypto debug-iterators=on picker-debugging=on invariant-checks=full $toolset variant=$variant link=shared;
     fi'
   - cd ..
 
   - cd tools
-  - 'if [ "$variant" != "" ]; then
+  - 'if [ "$tools" == "1" ]; then
       bjam -j3 warnings-as-errors=on ssl=$ssl crypto=$crypto debug-iterators=on picker-debugging=on invariant-checks=full $toolset variant=$variant link=shared;
     fi'
   - cd ..
@@ -162,13 +162,13 @@ script:
 # we have to do this because on linux the name of the python module is the same
 # as the main library, so we cannot stage them to the same directory
 # here we specify the temporary lib dir as a path to look for the main library
-  - 'if [ "$variant" != "" ]; then
+  - 'if [ "$python" == "1" ]; then
       bjam -j3 warnings-as-errors=on ssl=$ssl crypto=$crypto debug-iterators=on picker-debugging=on invariant-checks=full $toolset variant=$variant link=shared install location=./lib;
     fi'
 
 # a binary built with sanitizer does not interact well with python
   - cd bindings/python
-  - 'if [[ "$toolset" != "gcc-sanitizer" && "$variant" != "" ]]; then
+  - 'if [[ "$python" == "1" ]]; then
       bjam -j3 warnings-as-errors=on ssl=$ssl crypto=$crypto debug-iterators=on picker-debugging=on invariant-checks=full $toolset variant=$variant stage_module libtorrent-link=shared install-type=LIB dll-path=../../lib &&
       LD_LIBRARY_PATH=../../lib DYLD_LIBRARY_PATH=../../lib python test.py;
     fi'
@@ -176,8 +176,8 @@ script:
 
 # simulation
   - cd simulation
-  - 'if [[ "$variant" != "" && "$sim" == "1" ]]; then
-      bjam -j2 crypto=built-in ssl=off warnings-as-errors=on debug-iterators=on picker-debugging=on invariant-checks=full $test_args $toolset;
+  - 'if [[ "$sim" == "1" ]]; then
+      bjam -j2 crypto=built-in ssl=off warnings-as-errors=on debug-iterators=on picker-debugging=on invariant-checks=full $toolset;
     fi'
   - cd ..
 
@@ -191,7 +191,7 @@ script:
       make -j2 check;
     fi'
 
-  - 'if [[ "$variant" != "" ]]; then ccache --show-stats; fi'
+  - ccache --show-stats
 
   - cd test
   - 'if [[ "$arch" == "arm" ]];