Intel CI: attempt to add gcc-8 compatible testing.

.travis.yml

@@ -33,6 +33,20 @@ matrix:
       after_script:
         - '[[ ! -z "${INTEL_INSTALL_PATH}" ]] && uninstall_intel_software'
 
+    - os: linux
+      env: TOOLSET=intel COMPILER=icpc CXXSTD=03,11,14,17 TEST_INTEL=1 EXTRA_FLAGS=-gcc-name=g++-8
+      before_install:
+        - wget -q  'https://raw.githubusercontent.com/nemequ/icc-travis/master/install-icc.sh'
+        - bash ./install-icc.sh
+      after_script:
+        - '[[ ! -z "${INTEL_INSTALL_PATH}" ]] && uninstall_intel_software'
+      addons:
+        apt:
+          packages:
+            - g++-8
+          sources:
+            - ubuntu-toolchain-r-test
+
     - os: linux
       compiler: g++-4.4
       env: TOOLSET=gcc COMPILER=g++-4.4 CXXSTD=98,0x
@@ -278,7 +292,7 @@ install:
 script:
   - if [ $TEST_INTEL ]; then source ~/.bashrc; fi
   - |-
-    echo "using $TOOLSET : : $COMPILER ;" > ~/user-config.jam
+    echo "using $TOOLSET : : $COMPILER : <cxxflags>$EXTRA_FLAGS <linkflags>$EXTRA_FLAGS ;" > ~/user-config.jam
   - IFS=','
   - for CXXLOCAL in $CXXSTD; do  (cd libs/config/test && ../../../b2 config_info_travis_install toolset=$TOOLSET cxxstd=$CXXLOCAL $CXXSTD_DIALECT && echo With Standard Version $CXXLOCAL && ./config_info_travis && rm ./config_info_travis)  done
   - unset IFS