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python3: optional decimal module support

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This commit makes the decimal module support optional: since Python
3.3 it relies on an external library. The source code of this library
is available built-in as part of the Python sources, but in Buildroot
we generally prefer to use the external library when possible.

To achieve this, this commit adds a patch to Python that is similar to
the one we use for expat support, but this time for the
libmpdec/mpdecimal library.

As a consequence, since mpdecimal now builds properly even when
<fenv.h> is not available (on i386), this commit fixes:

  http://autobuild.buildroot.org/results/b64/b64d5c941a7cac00619da3a0696939f86a8eafc2/

Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
This commit is contained in:
Thomas Petazzoni
2014-07-23 20:33:19 +02:00
parent 6bebd7f271
commit 458bdf3f5f
3 changed files with 66 additions and 0 deletions
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7
package/python3/python3.mk
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@@ -51,6 +51,13 @@ else
PYTHON3_CONF_OPT += --disable-curses
endif
ifeq ($(BR2_PACKAGE_PYTHON3_DECIMAL),y)
PYTHON3_DEPENDENCIES += mpdecimal
PYTHON3_CONF_OPT += --with-libmpdec=system
else
PYTHON3_CONF_OPT += --with-libmpdec=none
endif
ifeq ($(BR2_PACKAGE_PYTHON3_PYEXPAT),y)
PYTHON3_DEPENDENCIES += expat
PYTHON3_CONF_OPT += --with-expat=system