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17114f8b19
The name has been changed to adhere to the config option naming format. The necessary build changes to use the new option have also been made.
35 lines
1.4 KiB
ReStructuredText
35 lines
1.4 KiB
ReStructuredText
.. _configure:
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..
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Do not edit this file directly. CMake will auto generate it.
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If the changes are intended, add this file to your commit.
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==========================
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Configure Options
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==========================
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Below is the full set of options one can use to configure the libc build.
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An option can be given an explicit value on the CMake command line using
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the following syntax:
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.. code-block:: sh
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$> cmake <other build options> -D<libc config option name>=<option value> <more options>
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For example:
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.. code-block:: sh
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$> cmake <other build options> -DLIBC_CONF_PRINTF_DISABLE_FLOAT=ON <more options>
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See the main ``config/config.json``, and the platform and architecture specific
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overrides in ``config/<platform>/config.json`` and ``config/<platform>/<arch>/config.json,``
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to learn about the defaults for your platform and target.
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* **"printf" options**
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- ``LIBC_CONF_PRINTF_DISABLE_FLOAT``: Disable printing floating point values in printf and friends.
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- ``LIBC_CONF_PRINTF_DISABLE_INDEX_MODE``: Disable index mode in the printf format string.
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- ``LIBC_CONF_PRINTF_DISABLE_WRITE_INT``: Disable handling of %n in printf format string.
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- ``LIBC_CONF_PRINTF_FLOAT_TO_STR_USE_MEGA_LONG_DOUBLE_TABLE``: Use large table for better printf long double performance.
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* **"string" options**
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- ``LIBC_CONF_STRING_UNSAFE_WIDE_READ``: Read more than a byte at a time to perform byte-string operations like strlen.
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