Till now, sparse was unneedlessly strict in what it accepted in '-D' options. More specifically, it doesn't accept: 1) separated '-D' and the macro definition, like: sparse -D MACRO[=definition] ... 2) a space between the '-D' and the macro name, like: sparse '-D MACRO[=definition] ... Case 1) is clearly accepted by GCC, clang and should be accepted for a POSIX's c99. Case 2's status is less clear but is also accepted by GCC and clang (leaving any validation to the corresponding internal #define). Fix this by accepting separated command line argument for '-D' and the macro (and removing the check that rejected the macro part if it started with a space). Signed-off-by: Luc Van Oostenryck <luc.vanoostenryck@gmail.com>