diff --git a/.github/workflows/build.yml b/.github/workflows/build.yml
index adde7c9b5..5a990f162 100644
--- a/.github/workflows/build.yml
+++ b/.github/workflows/build.yml
@@ -2,7 +2,7 @@ name: MVE GitHub Actions CI
 
 on:
   push:
-    branches: [ "master" ]
+    branches: [ "master", "gh_ci_test" ]
   pull_request:
     branches: [ "master" ]
 
@@ -61,6 +61,8 @@ jobs:
 
     - name: Build MVE on Linux/macOS
       run: |
+        uname -a
+        ${CXX} --version
         if [ "`uname`" = "Darwin"  ]; then
           export NUM_CPU_CORES="`sysctl -n hw.ncpu`"
         else
diff --git a/Makefile.inc b/Makefile.inc
index 9a7638b25..5fe8f5a7d 100644
--- a/Makefile.inc
+++ b/Makefile.inc
@@ -14,7 +14,6 @@ CXXFLAGS += -pthread
 UNAME = $(shell uname)
 ifeq (${UNAME},Darwin)
     CXXFLAGS += -DGL_SILENCE_DEPRECATION=1
-    OPENMP =
 endif
 
 LIBJPEG_CFLAGS = `pkg-config --cflags libjpeg`