saveconfig is dropping configurations

saveconfig is dropping configurations

[Bryce Schober]

When I saveconfig after loading a modified sample containing the
following configuration, it drops the configurations for
CT_LOCAL_TARBALLS_DIR, CT_PREFIX_DIR, and CT_LIBC_GLIBC_FORCE_UNWIND.
This makes any round-tripping through menuconfig and saveconfig not
work properly.

This is on latest tip - I haven't yet tried going back in time to a
released version.

Is this a bug, or am I missing something?
<><  <><  <><
Bryce Schober


CT_EXPERIMENTAL=y
CT_LOCAL_TARBALLS_DIR="${CT_TOP_DIR}/../dl_cache"
CT_SAVE_TARBALLS=y
CT_PREFIX_DIR="${CT_TOP_DIR}/../${CT_TARGET}"
CT_USE_MIRROR=y
CT_MIRROR_BASE_URL="http://ymorin.is-a-geek.org/mirrors/"
CT_PARALLEL_JOBS=16
CT_LOG_DEBUG=y
CT_ARCH_ARCH="i686"
CT_ARCH_x86=y
CT_STATIC_TOOLCHAIN=y
CT_TARGET_VENDOR="dynon"
CT_TARGET_ALIAS="i686-linux"
CT_KERNEL_linux=y
CT_KERNEL_V_3_0=y
CT_BINUTILS_V_2_21_53=y
CT_BINUTILS_LINKER_LD_GOLD=y
CT_BINUTILS_GOLD_THREADS=y
CT_BINUTILS_LD_WRAPPER=y
CT_BINUTILS_FOR_TARGET=y
CT_CC_V_4_3_6=y
CT_CC_GCC_USE_GRAPHITE=y
CT_CC_GCC_USE_LTO=y
CT_CC_LANG_CXX=y
CT_CC_GCC_LIBMUDFLAP=y
CT_CC_GCC_LIBGOMP=y
CT_CC_GCC_LIBSSP=y
CT_LIBC_glibc=y
CT_LIBC_GLIBC_V_2_9=y
CT_LIBC_GLIBC_FORCE_UNWIND=y
CT_DEBUG_gdb=y
CT_GDB_V_7_4_1=y
CT_GMP_V_4_3_2=y
CT_MPFR_V_2_4_2=y

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Re: saveconfig is dropping configurations

[Bryce Schober]

I just discovered that ct-ng saveconfig is also dropping
"CT_LOG_FILE_COMPRESS=n". Does someone have pointers to where I could
look for patching this problem? I'm willing to work on it...

<><  <><  <><
Bryce Schober


On Mon, Dec 16, 2013 at 2:37 PM, Bryce Schober <bryce.schober@gmail.com> wrote:
> When I saveconfig after loading a modified sample containing the
> following configuration, it drops the configurations for
> CT_LOCAL_TARBALLS_DIR, CT_PREFIX_DIR, and CT_LIBC_GLIBC_FORCE_UNWIND.
> This makes any round-tripping through menuconfig and saveconfig not
> work properly.
>
> This is on latest tip - I haven't yet tried going back in time to a
> released version.
>
> Is this a bug, or am I missing something?
> <><  <><  <><
> Bryce Schober
>
>
> CT_EXPERIMENTAL=y
> CT_LOCAL_TARBALLS_DIR="${CT_TOP_DIR}/../dl_cache"
> CT_SAVE_TARBALLS=y
> CT_PREFIX_DIR="${CT_TOP_DIR}/../${CT_TARGET}"
> CT_USE_MIRROR=y
> CT_MIRROR_BASE_URL="http://ymorin.is-a-geek.org/mirrors/"
> CT_PARALLEL_JOBS=16
> CT_LOG_DEBUG=y
> CT_ARCH_ARCH="i686"
> CT_ARCH_x86=y
> CT_STATIC_TOOLCHAIN=y
> CT_TARGET_VENDOR="dynon"
> CT_TARGET_ALIAS="i686-linux"
> CT_KERNEL_linux=y
> CT_KERNEL_V_3_0=y
> CT_BINUTILS_V_2_21_53=y
> CT_BINUTILS_LINKER_LD_GOLD=y
> CT_BINUTILS_GOLD_THREADS=y
> CT_BINUTILS_LD_WRAPPER=y
> CT_BINUTILS_FOR_TARGET=y
> CT_CC_V_4_3_6=y
> CT_CC_GCC_USE_GRAPHITE=y
> CT_CC_GCC_USE_LTO=y
> CT_CC_LANG_CXX=y
> CT_CC_GCC_LIBMUDFLAP=y
> CT_CC_GCC_LIBGOMP=y
> CT_CC_GCC_LIBSSP=y
> CT_LIBC_glibc=y
> CT_LIBC_GLIBC_V_2_9=y
> CT_LIBC_GLIBC_FORCE_UNWIND=y
> CT_DEBUG_gdb=y
> CT_GDB_V_7_4_1=y
> CT_GMP_V_4_3_2=y
> CT_MPFR_V_2_4_2=y

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Re: saveconfig is dropping configurations

[Yann E. MORIN]

Bryce, All,

Sorry for the delay... :-(

On 2013-12-16 14:37 -0800, Bryce Schober spake thusly:
> When I saveconfig after loading a modified sample containing the
> following configuration, it drops the configurations for
> CT_LOCAL_TARBALLS_DIR, CT_PREFIX_DIR, and CT_LIBC_GLIBC_FORCE_UNWIND.
> This makes any round-tripping through menuconfig and saveconfig not
> work properly.
> 
> This is on latest tip - I haven't yet tried going back in time to a
> released version.
> 
> Is this a bug, or am I missing something?

This is on purpose. The code responsible for that is in:
    scripts/saveSample.sh.in

We drop those configurations because we want the samples to be
re-useable as-is by other users. Samples are meant to be bundled in
crosstool-NG, so we do want any user to be able to use them.

For example, if you were to store the prefix' or tarballs' directory in
the sample, then what would ensure that those locations are valid on any
other user's machine?

The only way it is is to use the defaults for those variables, which
default to a sub-dir in ${HOME}, which is the only location we can
guarantee is writeable by the user.

On the other hand, if you want to save a minimal defconfig, you can use:
    ct-ng savedefconfig

which creates a file named 'defconfig' in the current directory.

Note the difference between a sample and a defconfig, however:

  - sampels will save both the crosstool-Ng configuration *and* any
    associated file (eg. the uClibc .config file).

  - a defconfig will only save a crosstool-Ng minimal defconfig, and no
    associted file

As for CT_LIBC_GLIBC_FORCE_UNWIND, it gets dropped because it defaults
to being set. Did you miss it when recalling a sample?

Regards,
Yann E. MORIN.

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Re: saveconfig is dropping configurations

[Bryce Schober]

On Mon, May 12, 2014 at 1:10 PM, Yann E. MORIN <yann.morin.1998@free.fr> wrote:
> As for CT_LIBC_GLIBC_FORCE_UNWIND, it gets dropped because it defaults
> to being set. Did you miss it when recalling a sample?

It's been a while... but I think that my configuration was needing a
non-default value and it was getting dropped on reload.

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