diff --git a/.gitignore b/.gitignore
index c04c75a..357c080 100644
--- a/.gitignore
+++ b/.gitignore
@@ -27,6 +27,7 @@ reconstruction_benchmarks
 NPDet
 DD4hep
 Catch2
+afterburner
 
 juggler
 ip6
@@ -46,3 +47,4 @@ hepmc
 .ruby-version
 Gemfile.lock
 tags
+.DS_Store
diff --git a/build.sh b/build.sh
index c800e0d..5045936 100755
--- a/build.sh
+++ b/build.sh
@@ -66,6 +66,7 @@ export CMAKE_PREFIX_PATH=$prefix:$CMAKE_PREFIX_PATH
 # module-specific options and preparation
 genOpts=""
 function genOpt() { genOpts+="-D$* "; }
+sourcepath=$module
 case $module in
   EDM4eic)
     genOpt BUILD_DATA_MODEL=ON
@@ -118,6 +119,10 @@ case $module in
     ;;
   Catch2)
     ;;
+  afterburner)
+    sourcepath=$module/cpp
+    genOpt HEPMC3_ROOTIO=ON
+    ;;
 esac
 
 ########################################
@@ -127,7 +132,7 @@ esac
 genOpt CMAKE_INSTALL_PREFIX=$prefix
 genOpts+=$extraOpts
 buildSys=$module/build
-cmakeGen="cmake -S $module -B $buildSys $genOpts"
+cmakeGen="cmake -S $sourcepath -B $buildSys $genOpts"
 
 # set build command
 buildOpts="-j $nproc"