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config CC_GCC_ENABLE_TARGET_OPTSPACE
bool
prompt "Optimize gcc libs for size"
default y
help
Pass --enable-target-optspace to crossgcc's configure.
This will compile crossgcc's libs with -Os.
comment "Misc. obscure options."
config CC_CXA_ATEXIT
bool
prompt "Use __cxa_atexit"
default y
depends on ! BARE_METAL
help
If you get the missing symbol "__cxa_atexit" when building C++ programs,
you might want to try disabling this option.
config CC_GCC_DISABLE_PCH
bool
prompt "Do not build PCH"
default n
help
Say 'y' here to not use Pre-Compiled Headers in the resulting toolchain.
at the expense of speed when compiling C++ code.
For some configurations (most notably canadian?), PCH are broken, and
need to be disabled. Please see:
http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40974
config CC_GCC_SJLJ_EXCEPTIONS
tristate
prompt "Use sjlj for exceptions"
default m
help
'sjlj' is short for setjmp/longjmp.
On some architectures, stack unwinding during exception handling
works perfectly well without using sjlj, while on some others,
use of sjlj is required for proper stack unwinding.
Option | sjlj use | Associated ./configure switch
---------+--------------------+--------------------------------
Y | forcibly used | --enable-sjlj-exceptions
M | auto | (none, ./configure decides)
N | forcibly not used | --disable-sjlj-exceptions
It should be safe to say 'M' or 'N'.
It can happen that ./configure is wrong in some cases. Known
case is for ARM big endian, where you should say 'N'.
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