diff --git a/m4/build.m4 b/m4/build.m4
index 8bae5300..bcdf2906 100644
--- a/m4/build.m4
+++ b/m4/build.m4
@@ -38,6 +38,11 @@ $INTL_CFLAGS $PTW32_CFLAGS $BFD_CFLAGS -pipe -Wall -fexceptions $OPT_CFLAGS $DEB
     FLDIGI_BUILD_CXXFLAGS="$FLDIGI_BUILD_CXXFLAGS -I\$(srcdir)/xmlrpcpp"
   fi
 
+  if test "x$target_darwin" = "xyes"; then
+    FLDIGI_BUILD_CXXFLAGS="$FLDIGI_BUILD_CXXFLAGS -fno-stack-check -mmacosx-version-min=10.11"
+    FLDIGI_BUILD_CPPFLAGS="$FLDIGI_BUILD_CPPFLAGS -fno-stack-check -mmacosx-version-min=10.11"
+  fi
+
 # LDFLAGS
   FLDIGI_BUILD_LDFLAGS="$MAC_UNIVERSAL_LDFLAGS"
   if test "x$target_mingw32" = "xyes"; then
@@ -78,6 +83,11 @@ $BFD_CFLAGS -pipe -Wall -fexceptions $OPT_CFLAGS $DEBUG_CFLAGS"
     FLDIGI_BUILD_LDADD="$FLDIGI_BUILD_LDADD $LIBMBEDTLS_LDFLAGS"
   fi
 
+  if test "x$target_darwin" = "xyes"; then
+    FLARQ_BUILD_CXXFLAGS="$FLARQ_BUILD_CXXFLAGS -fno-stack-check -mmacosx-version-min=10.11"
+    FLARQ_BUILD_CPPFLAGS="$FLARQ_BUILD_CPPFLAGS -fno-stack-check -mmacosx-version-min=10.11"
+  fi
+
 # LDFLAGS
   FLARQ_BUILD_LDFLAGS="$MAC_UNIVERSAL_LDFLAGS"
   if test "x$target_mingw32" = "xyes"; then