flexible cxx/cxxflags/ldflags for CI integration

install.sh

@@ -6,22 +6,26 @@ set -e
 OS=$(uname -s)
 ARCH=$(uname -m)
 
-if [ "${OS}" = "Linux" ]; then
-    alias gx1="g++ -O3 -c -fpic -fopenmp "
-    alias gx2="g++ -O3 -shared -fopenmp "
-elif [ "${OS}" = "Darwin" ]; then
-    if [ "${ARCH}" = "arm64" ]; then
-        compiler="/opt/homebrew/opt/llvm/bin/clang++"
+if [ -n "$CXX" ]; then
+    compiler="$CXX"
+else
+    if [ "${OS}" = "Linux" ]; then
+        compiler="g++"
+    elif [ "${OS}" = "Darwin" ]; then
+        if [ "${ARCH}" = "arm64" ]; then
+            compiler="/opt/homebrew/opt/llvm/bin/clang++"
+        else
+            compiler="/usr/local/opt/llvm/bin/clang++"
+        fi
     else
-        compiler="/usr/local/opt/llvm/bin/clang++"
+        echo "Unsupported OS"
+        exit -1
     fi
-    alias gx1="${compiler} -O3 -c -fpic -fopenmp "
-    alias gx2="${compiler} -O3 -shared -fopenmp "
-else
-    echo "Unsupported OS"
-    exit -1
 fi
 
+alias gx1="${compiler} \$CXXFLAGS -O3 -c -fpic -fopenmp "
+alias gx2="${compiler} \$LDFLAGS -O3 -shared -fopenmp "
+
 mkdir -p ocmesher/lib
 gx1 -o ocmesher/lib/core.o ocmesher/source/core.cpp
 gx2 -o ocmesher/lib/core.so ocmesher/lib/core.o