Add a Travis test for CONFIG COMPONENTS ALL

.travis.yml

@@ -168,6 +168,7 @@ matrix:
     - env: LIB=thread UBP=1
     - env: LIB=wave
     - env: LIB=wave UBP=1
+
     - env: ALL=1
       install:
         - BOOST_BRANCH=develop && [ "$TRAVIS_BRANCH" == "master" ] && BOOST_BRANCH=master || true
@@ -196,6 +197,34 @@ matrix:
         - export DYLD_LIBRARY_PATH=$HOME/.local/lib:$DYLD_LIBRARY_PATH
         - cmake --build . --target check
 
+    - env: ALL_CONFIG=1
+      install:
+        - BOOST_BRANCH=develop && [ "$TRAVIS_BRANCH" == "master" ] && BOOST_BRANCH=master || true
+        - cd ..
+        - git clone -b $BOOST_BRANCH --depth 1 https://github.com/boostorg/boost.git boost-root
+        - cd boost-root
+        - git submodule update --init --jobs 3
+        - rm -rf tools/boost_install/*
+        - cp -r $TRAVIS_BUILD_DIR/* tools/boost_install
+        - ./bootstrap.sh
+        - ./b2 headers
+        - |-
+          echo "using python : 2.7 ;" >> ~/user-config.jam
+        - |-
+          echo "using python : 3.5 ;" >> ~/user-config.jam
+        - |-
+          echo "using mpi ;" >> ~/user-config.jam
+        - ./b2 -j3 --prefix=$HOME/.local python=2.7,3.5 install
+      script:
+        - cd tools/boost_install/test/filesystem
+        - mkdir __build__ && cd __build__
+        - if [ -z "$STAGE" ]; then export CMAKE_INSTALL="-DCMAKE_INSTALL_PREFIX=~/.local"; fi
+        - cmake -DCMAKE_INSTALL_PREFIX=~/.local -DUSE_ALL_COMPONENTS_CONFIG=1 -DBoost_DEBUG=ON ..
+        - cmake --build .
+        - export LD_LIBRARY_PATH=$HOME/.local/lib:$LD_LIBRARY_PATH
+        - export DYLD_LIBRARY_PATH=$HOME/.local/lib:$DYLD_LIBRARY_PATH
+        - cmake --build . --target check
+
 install:
   - BOOST_BRANCH=develop && [ "$TRAVIS_BRANCH" == "master" ] && BOOST_BRANCH=master || true
   - cd ..

test/filesystem/CMakeLists.txt

@@ -1,4 +1,4 @@
-# Copyright 2018, 2019 Peter Dimov
+# Copyright 2018-2020 Peter Dimov
 # Distributed under the Boost Software License, Version 1.0.
 # (See accompanying file LICENSE_1_0.txt or copy at http://boost.org/LICENSE_1_0.txt)
 
@@ -22,6 +22,10 @@ if(USE_ALL_COMPONENTS)
 
   find_package(Boost ${BOOST_VERSION} EXACT REQUIRED ALL ${BOOST_HINTS})
 
+elseif(USE_ALL_COMPONENTS_CONFIG)
+
+  find_package(Boost ${BOOST_VERSION} EXACT CONFIG REQUIRED ALL ${BOOST_HINTS})
+
 elseif(USE_BOOST_PACKAGE)
 
   find_package(Boost ${BOOST_VERSION} EXACT REQUIRED COMPONENTS filesystem ${BOOST_HINTS})