Only use CXX11 if supported

ropensci · Jan 26, 2018 · c1a4e14 · c1a4e14
1 parent 3e272f1
commit c1a4e14
Showing 1 changed file with 6 additions and 1 deletion.
diff --git a/configure b/configure
@@ -51,10 +51,15 @@ echo "Using PKG_LIBS=$PKG_LIBS"
 
 # Find compiler
 CXXCPP=`${R_HOME}/bin/R CMD config CXXCPP`
-CXXSTD=`${R_HOME}/bin/R CMD config CXX11STD`
 CXXFLAGS=`${R_HOME}/bin/R CMD config CXXFLAGS`
 CPPFLAGS=`${R_HOME}/bin/R CMD config CPPFLAGS`
 
+# Tesseract 4 enforces C++11
+CXXSTD=`${R_HOME}/bin/R CMD config CXX11STD`
+if [ $? -ne 0 ]; then
+unset CXXSTD
+fi
+
 # Test configuration
 ${CXXCPP} ${CXXSTD} ${CPPFLAGS} ${PKG_CFLAGS} ${CXXFLAGS} src/test.h >/dev/null 2>&1