Make GitHub actions output of setup step more readable

Use groups to wrap parts of the steps

ci/common_install.sh

@@ -28,8 +28,20 @@ set -ex
 
 CI_DIR="$(cd "$(dirname "${BASH_SOURCE[0]}")" &> /dev/null && pwd)"
 
-. "$CI_DIR"/enforce.sh
+function print_on_gha {
+    { set +x; } &> /dev/null
+    if [[ "${GITHUB_ACTIONS:-false}" == "true" ]]; then
+        echo "$@"
+    fi
+    set -x
+    fi
+} 2> /dev/null
+
+print_on_gha "::group::Setup B2 variables"
+. "$CI_DIR"/enforce.sh 2>&1
+print_on_gha "::endgroup::"
 
+print_on_gha "::group::Checkout and setup Boost build tree"
 pythonexecutable=$(get_python_executable)
 
 if [ -z "$SELF" ]; then
@@ -71,6 +83,7 @@ if [[ -n "$GIT_FETCH_JOBS" ]]; then
 fi
 
 $pythonexecutable tools/boostdep/depinst/depinst.py --include benchmark --include example --include examples --include tools "${DEPINST_ARGS[@]}" $DEPINST $SELF
+print_on_gha "::endgroup::"
 
 # Deduce B2_TOOLSET if unset from B2_COMPILER
 if [ -z "$B2_TOOLSET" ] && [ -n "$B2_COMPILER" ]; then
@@ -121,9 +134,10 @@ if [[ "$B2_TOOLSET" == clang* ]]; then
 fi
 
 # Setup ccache
+print_on_gha "::group::Setup CCache"
 if [ "$B2_USE_CCACHE" == "1" ]; then
     if ! "$CI_DIR"/setup_ccache.sh 2>&1; then
-        set +x
+        { set +x; } &> /dev/null
         echo
         printf '=%.0s' {1..120}
         echo
@@ -133,10 +147,14 @@ if [ "$B2_USE_CCACHE" == "1" ]; then
         echo
         echo
         B2_USE_CCACHE=0
+        print_on_gha "::error title=CCache::CCache disabled due to an error!"
         set -x
     fi
+    print_on_gha "::error title=CCache::CCache22 disabled due to an error!"
 fi
+print_on_gha "::endgroup::"
 
+print_on_gha "::group::Setup B2"
 # Set up user-config to actually use B2_COMPILER if set
 if [ -n "$B2_COMPILER" ]; then
     # Get C++ compiler
@@ -152,7 +170,7 @@ if [ -n "$B2_COMPILER" ]; then
         exit 1
     fi
 
-    set +x
+    { set +x; } &> /dev/null
     echo "Compiler location: $(command -v $CXX)"
     if [[ "$CXX" == *"clang++"* ]] && [ -z "$GCC_TOOLCHAIN_ROOT" ]; then
         # Show also information on selected GCC lib
@@ -183,8 +201,10 @@ function show_bootstrap_log
 {
     cat bootstrap.log
 }
+print_on_gha "::endgroup::"
 
 if [[ "$B2_DONT_BOOTSTRAP" != "1" ]]; then
+    print_on_gha "::group::Bootstrap B2"
     trap show_bootstrap_log ERR
     # Check if b2 already exists. This would (only) happen in a caching scenario. The purpose of caching is to save time by not recompiling everything.
     # The user may clear cache or delete b2 beforehand if they wish to rebuild.
@@ -205,4 +225,5 @@ if [[ "$B2_DONT_BOOTSTRAP" != "1" ]]; then
     fi
     trap - ERR
     ${B2_WRAPPER} ./b2 -d0 headers
+    print_on_gha "::endgroup::"
 fi

ci/setup_ccache.sh

@@ -7,10 +7,17 @@
 #
 # Installs and sets up ccache
 
+{ set +x; } &> /dev/null
 set -eu
-set +x
+
+function print_on_gha {
+    if [[ "${GITHUB_ACTIONS:-false}" == "true" ]]; then
+        echo "$@"
+    fi
+} 2> /dev/null
 
 if ! command -v ccache &> /dev/null; then
+  print_on_gha "::group::Installing CCache"
   if [ -f "/etc/debian_version" ]; then
     sudo apt-get install ${NET_RETRY_COUNT:+ -o Acquire::Retries=$NET_RETRY_COUNT} -y ccache
   elif command -v brew &> /dev/null; then
@@ -26,6 +33,7 @@ if ! command -v ccache &> /dev/null; then
         brew install ccache 2>&1
     fi
   fi
+  print_on_gha "::endgroup::"
 fi
 
 # Sanity check that CCache is installed, executable and works at all