Improve coverage

.travis.yml

@@ -125,7 +125,7 @@ jobs:
       addons: *gcc-8
       script:
         - cd $BOOST_ROOT/libs/$SELF
-        - ci/travis/codecov.sh
+        - tools/codecov.sh
 
     - os: linux
       env:

tools/codecov.sh

@@ -0,0 +1,65 @@
+#! /bin/bash
+#
+# Copyright 2017 - 2019 James E. King III
+# Distributed under the Boost Software License, Version 1.0.
+# (See accompanying file LICENSE_1_0.txt or copy at
+#      http://www.boost.org/LICENSE_1_0.txt)
+#
+# Bash script to run in travis to perform codecov.io integration
+#
+
+# assumes cwd is the top level directory of the boost project
+# assumes an environment variable $SELF is the boost project name
+
+set -ex
+
+. ci/travis/enforce.sh
+
+if [ -z "$GCOV" ]; then
+    if [ "${B2_TOOLSET%%-*}" == "gcc" ]; then
+        ver="${B2_TOOLSET#*-}"
+        GCOV=gcov-${ver}
+    else
+        GCOV=gcov-7 # default
+    fi
+fi
+
+# lcov after 1.14 needs this
+# sudo apt install --no-install-recommends -y libperlio-gzip-perl libjson-perl
+
+# install the latest lcov we know works
+# some older .travis.yml files install the tip which may be unstable
+rm -rf /tmp/lcov
+pushd /tmp
+git clone -b v1.14 https://github.com/linux-test-project/lcov.git
+export PATH=/tmp/lcov/bin:$PATH
+which lcov
+lcov --version
+popd
+
+B2_VARIANT=variant=debug
+ci/travis/build.sh cxxflags=--coverage linkflags=--coverage 
+#cxxflags=-fprofile-arcs cxxflags=-ftest-coverage linkflags=-fprofile-arcs linkflags=-ftest-coverage
+
+# switch back to the original source code directory
+cd $TRAVIS_BUILD_DIR
+
+# coverage files are in ../../b2 from this location
+lcov --gcov-tool=$GCOV --rc lcov_branch_coverage=0 --base-directory "$BOOST_ROOT/libs/$SELF" --directory "$BOOST_ROOT" --capture --output-file all.info
+
+# all.info contains all the coverage info for all projects - limit to ours
+# first we extract the interesting headers for our project then we use that list to extract the right things
+for f in `for f in include/boost/*; do echo $f; done | cut -f2- -d/`; do echo "*/$f*"; done > /tmp/interesting
+echo headers that matter:
+cat /tmp/interesting
+xargs -L 999999 -a /tmp/interesting lcov --gcov-tool=$GCOV --rc lcov_branch_coverage=1 --extract all.info {} "*/libs/$SELF/src/*" --output-file coverage.info
+
+# dump a summary on the console - helps us identify problems in pathing
+lcov --gcov-tool=$GCOV --rc lcov_branch_coverage=1 --list coverage.info
+
+#
+# upload to codecov.io
+#
+curl -s https://codecov.io/bash > .codecov
+chmod +x .codecov
+./.codecov -f coverage.info -X gcov -x "$GCOV"