Since the recent update of Kconfig to the Kconfig infrastructure found
in 2.6.30 kernels, make oldconfig was broken because it didn't
generate the .config.cmd file. This is done by a call to the
conf_write_autoconf() function.
Moreover, this process was also broken because the
conf_get_autoconfig_name() function was reading the environment
variable BUILDROOT_AUTOCONF while the main Makefile is passing it as
KCONFIG_AUTOCONFIG. We also remove the fallback on
"$(BR2_DEPENDS_DIR)/config/auto.conf" since we are not able to expand
BR2_DEPENDS_DIR at this point. Therefore, the KCONFIG_AUTOCONFIG
envionment variable *must* be set.
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This also provides a nice up-to-date filestamp if something got reconfigured (e.g. c++ support got toggled) that can be used in the future to depend accordingly.
The configuration utility in package/config/ can look for a default
configuration file called 'defconfig' but it's hard coded to look for
sysdeps/linux/defconfig.
This patch causes the config utility to look in the current working directory
for the 'defconfig' file. I use this to provide a default configuration to a
new buildroot environment. This way, I can 'svn co' buildroot, copy my
defconfig, then make defconfig to use my own default configuration.
This fix only changes one line in the confdata.c file to remove the legacy path
that was used in Linux, and not needed in buildroot.
