kbuild: do not pick up CFLAGS from the environment

Too many people have CFLAGS set to support building userspace.
And now Kbuild picks up CFLAGS this caused troubles.

Although people should realise that setting CFLAGS has
a 'global' effect the impact on the kernel build is a suprise.
So change kbuild to pick up value from KCFLAGS that is
much less used.

When kbuild pick up a value it will warn like this:
Makefile:544: "WARNING: Appending $KCFLAGS (-O3) from environment to kernel $CFLAGS"

Signed-off-by: Sam Ravnborg <[email protected]>
Cc: Thomas Bächler <[email protected]>
Cc: David Miller <[email protected]>
Cc: Ingo Molnar <[email protected]>

0 files changed, 0 insertions, 0 deletions