kicad: fix with newer cmake

srcpkgs/kicad/template

@@ -1,7 +1,7 @@
 # Template file for 'kicad'
 pkgname=kicad
 version=4.0.7
-revision=5
+revision=6
 build_style=cmake
 configure_args="-DKICAD_BUILD_VERSION=$version -DKICAD_SKIP_BOOST=ON
  -DKICAD_SCRIPTING=ON -DKICAD_SCRIPTING_MODULES=ON -DKICAD_SCRIPTING_WXPYTHON=ON"
@@ -23,9 +23,13 @@ if [ -n "$CROSS_BUILD" ]; then
 	hostmakedepends+=" python"
 	configure_args+=" -DPYTHON_SITE_PACKAGE_PATH=${XBPS_CROSS_BASE}/usr/lib/python${py2_ver}/site-packages
 	 -DPYTHON_DEST=/usr/lib/python${py2_ver}/site-packages"
-
-	pre_configure() {
-		CXXFLAGS+=" $(wx-config --cxxflags)"
-	}
 fi
 
+pre_configure() {
+	if [ -n "$CROSS_BUILD" ]; then
+		CXXFLAGS+=" $(wx-config --cxxflags)"
+	fi
+
+	sed 's/_CHECK_SYMBOL_EXISTS/CHECK_SYMBOL_EXISTS/' \
+		-i CMakeModules/CheckCXXSymbolExists.cmake
+}