selfcheck.sh: also run with system includes made available [skip ci]

Author: firewave

selfcheck.sh

@@ -3,4 +3,8 @@
 output=$(./simplecpp simplecpp.cpp -e 2>&1)
 ec=$?
 echo "$output" | grep -v 'Header not found: <'
-exit $ec
+exit $ec
+
+# TODO: also run with libc++
+gcc_ver=$(gcc -dumpversion)
+./simplecpp simplecpp.cpp -e -f -D__GNUC__ -D__STDC__ -D__STDC_HOSTED__ -D__CHAR_BIT__=8 -I"/usr/include" -I"/usr/include/linux" -I"/usr/include/c++/$gcc_ver" -I"/usr/include/c++/$gcc_ver/x86_64-pc-linux-gnu" -I"/usr/lib64/gcc/x86_64-pc-linux-gnu/$gcc_ver/include"