Fix it to use Extra_cflags

Source: Internet
Author: User

LDD3:

1. At linux2.6.34.1 compile prompt Fix it to use Extra_cflags. Stop.

Replace the cflags in the makefile with the extra_cflags.

The reason is that all the Extra_ variables in the 2.6 kernel version work only in the defined Kbuild makefile.    The Extra_ variable can be used in all commands in Kbuild makefile.    $ (extra_cflags) is the option to compile the C source file with $ (CC). Example: # drivers/sound/emu10kl/makefile Extra_cflags + +-i$ (obj) ifdef DEBUG extra_cf LAGS + =-demu10kl_debug endif This variable is necessary because the top-level makefile owns the variable $ (cflags) and is used as the compilation option for the entire source tree.

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