build: Add build flag to enable sparse checking of C source files

Similar to the 'make C=1' for the Linux kernel, wire up the sparse
command for our build system in a similar fashion. Use 'make C=1 [tool]'
to check the source files using sparse. Of course, the sparse tool needs
to be installed and available in your $PATH for this to work.

Signed-off-by: Tobias Klauser <tklauser@distanz.ch>

1 files changed, 1 insertions, 0 deletions

diff --git a/Misc b/Misc
index 8c826ed..a56a0b1 100644
--- a/Misc
+++ b/Misc
@@ -114,4 +114,5 @@ help:
 	$(Q)echo " CPPFLAGS=\"-I <path> ...\"     - Additional CFLAGS for compilation"
 	$(Q)echo " LDFLAGS=\"-L <path> ...\"      - Additional LDFLAGS for compilation"
 	$(Q)echo " CCACHE=                      - Do not use ccache for compilation"
+	$(Q)echo " C=1                          - Check all C source files with sparse"
 	$(Q)echo " Q=                           - Show verbose garbage"