kbuild: do not pick up CFLAGS from the environment
authorSam Ravnborg <sam@ravnborg.org>
Sun, 4 Nov 2007 18:00:46 +0000 (19:00 +0100)
committerSam Ravnborg <sam@ravnborg.org>
Sun, 4 Nov 2007 18:00:46 +0000 (19:00 +0100)
commit69ee0b3522428a07ff1765446d631ecc7da6ae0f
treefe13c78e9f7e7fa528a7bd1bd72e387373668212
parentb4f555081fdd27d13e6ff39d455d5aefae9d2c0c
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 <sam@ravnborg.org>
Cc: Thomas B├Ąchler <thomas@archlinux.org>
Cc: David Miller <davem@davemloft.net>
Cc: Ingo Molnar <mingo@redhat.com>
Makefile