[asterisk-dev] [Code Review] 4091: build: Force -fsigned-char on platforms where the default for char is unsigned.

George Joseph reviewboard at asterisk.org
Fri Oct 17 10:59:54 CDT 2014


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This is an automatically generated e-mail. To reply, visit:
https://reviewboard.asterisk.org/r/4091/
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(Updated Oct. 17, 2014, 9:59 a.m.)


Review request for Asterisk Developers and Corey Farrell.


Changes
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Should be NOT using the undocumented ac_cv_c_char_unsigned.


Repository: Asterisk


Description (updated)
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gcc on the ARM platform defaults 'char' to 'unsigned char' whereas Intel and SPARC default to 'signed char'.  This is only an issue in the rare cases where negative values are assigned to a 'char' but this this patch insures compatibility by detecting platforms that default to 'unsigned' and adding an '-fsigned-char' flag to _ASTCFLAGS.

If compiling for ARM (native or cross-compile) be sure to run ./bootstrap.sh and ./configure to regenerate the build files.  You shouldn't have to do this for Intel or SPARC.


Diffs
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  branches/12/makeopts.in 425744 
  branches/12/configure.ac 425744 
  branches/12/configure UNKNOWN 
  branches/12/Makefile 425744 

Diff: https://reviewboard.asterisk.org/r/4091/diff/


Testing
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Tested native ARM, native Intel, cross-compile Intel->ARM, and native SPARC.  The -fsigned-char flag was only generated on native ARM and cross-compile ARM.
There were no build errors.


Thanks,

George Joseph

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