2010-07-28 19:28:54 +00:00
|
|
|
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.
|
|
|
|
|
|
2010-07-29 17:47:16 +00:00
|
|
|
config CC_STATIC_LIBSTDCXX
|
|
|
|
|
bool
|
|
|
|
|
prompt "Link libstdc++ statically into the gcc binary"
|
|
|
|
|
default y
|
|
|
|
|
depends on CC_GCC_4_4_or_later
|
|
|
|
|
help
|
|
|
|
|
Newer gcc versions use the PPL library which is C++ code. Statically
|
|
|
|
|
linking libstdc++ increases the likeliness that the gcc binary will
|
|
|
|
|
run on machines other than the one which it was built on, without
|
|
|
|
|
having to worry about distributing the matching version of libstdc++
|
|
|
|
|
along with it.
|
|
|
|
|
|
2010-07-28 19:28:54 +00:00
|
|
|
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
|
|
|
|
|
|
2010-07-28 21:53:09 +00:00
|
|
|
config CC_GCC_SJLJ_EXCEPTIONS
|
|
|
|
|
tristate
|
2010-07-28 19:28:54 +00:00
|
|
|
prompt "Use sjlj for exceptions"
|
2010-07-30 21:41:19 +00:00
|
|
|
depends on ! BARE_METAL
|
2010-07-28 21:53:09 +00:00
|
|
|
default m
|
2010-07-28 19:28:54 +00:00
|
|
|
help
|
2010-07-28 21:53:09 +00:00
|
|
|
'sjlj' is short for setjmp/longjmp.
|
2010-07-28 19:28:54 +00:00
|
|
|
|
2010-07-28 21:53:09 +00:00
|
|
|
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.
|
2010-07-28 19:28:54 +00:00
|
|
|
|
2010-07-28 21:53:09 +00:00
|
|
|
Option | sjlj use | Associated ./configure switch
|
|
|
|
|
---------+--------------------+--------------------------------
|
|
|
|
|
Y | forcibly used | --enable-sjlj-exceptions
|
|
|
|
|
M | auto | (none, ./configure decides)
|
|
|
|
|
N | forcibly not used | --disable-sjlj-exceptions
|
2010-07-28 19:28:54 +00:00
|
|
|
|
2010-07-28 21:53:09 +00:00
|
|
|
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'.
|
2010-07-28 21:55:10 +00:00
|
|
|
|
|
|
|
|
config CC_GCC_LIBMUDFLAP
|
|
|
|
|
bool
|
|
|
|
|
prompt "Compile libmudflap"
|
|
|
|
|
default n
|
|
|
|
|
help
|
|
|
|
|
libmudflap is a pointer-use checking tool, which can detect
|
|
|
|
|
various mis-usages of pointers in C and (to some extents) C++.
|
|
|
|
|
|
|
|
|
|
You should say 'N' here, as libmduflap generates instrumented
|
|
|
|
|
code (thus it is a bit bigger and a bit slower) and requires
|
|
|
|
|
re-compilation and re-link, while it exists better run-time
|
|
|
|
|
alternatives (eg. DUMA, dmalloc...) that need neither re-
|
|
|
|
|
compilation nor re-link.
|
