build_oai: don't redirect compilations to a file

Redirecting to a file has the problem that it is difficult in the CI to
recover these files. Furthermore, at least with ninja, when running
build_oai interactively, the build output will only take some lines
(because ninja rewrites lines), so the change should not be that big to
users.

One CI function would print the entire output from build_oai to the
console. Since that output might be long now, do not do this. The file
is archived, anyway.

cmake_targets/tools/build_helper

@@ -181,65 +181,6 @@ clean_all_files() {
  rm -rf $dir/autotests/bin $dir/autotests/log $dir/autotests/*/build
 }
 
-###################################
-# Compilers
-###################################
-
-#check_warnings:
-#    print error message if the compilation had warnings
-#argument:
-#    $1: log file
-check_warnings() {
-  #we look for 'warning:' in the compilation log file
-  #this is how gcc starts a warning
-  #this is not perfect, we may get false positive
-  warning_count=`grep "warning:" "$1" | grep -E -v "jobserver unavailable|disabling jobserver mode" | wc -l`
-  if [ $warning_count -gt 0 ]; then
-    echo_error "WARNING: $warning_count warnings. See $1"
-  fi
-}
-
-#check_errors:
-#    print error message if the compilation had errors
-#argument:
-#    $1: log file
-check_errors() {
-  #we look for 'error:' in the compilation log file
-  error_count=`grep -c "error:" "$1"`
-  if [ $error_count -gt 0 ]; then
-    echo_error "ERROR: $error_count error. See $1"
-  fi
-}
-
-compilations() {
-  [[ $# -eq 4 ]] || echo_fatal "compilations <dir> <logfile> <targets> <build-tool-opt>"
-  local dir=$1
-  local logfile=$2
-  local targets=$3
-  local build_tool_opt=$4
-  local verbose=$([ "$VERBOSE_COMPILE" == "1" ] && echo "-v" || echo "")
-  echo cd $OPENAIR_DIR/cmake_targets/$dir/build
-  cd $OPENAIR_DIR/cmake_targets/$dir/build
-  cmd="$CMAKE --build . ${verbose} --target ${targets} -- ${build_tool_opt}"
-  echo_info "Running \"${cmd}\"" $green
-  echo "Log file for compilation is being written to: $dlog/$logfile"
-  set +e
-  {
-    eval ${cmd}
-    ret=$?
-  } > $dlog/$logfile 2>&1
-  # Print the errors and warnings for CI purposes
-  grep -E -A5 -B5 "warning:|error:| Error " $dlog/$logfile || true
-  check_warnings "$dlog/$logfile"
-  if [[ $ret -eq 0 ]]; then
-     echo_success "$targets compiled"
-  else
-     check_errors "$dlog/$logfile"
-     echo_error "compilation of $targets failed"
-     exit 1
-  fi
-}
-
 ############################################
 # External packages installers
 ############################################