author | "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> |
Wed Jul 28 23:53:09 2010 +0200 (2010-07-28) | |
changeset 2042 | d1f70bef45ba |
parent 2041 | db17513ee7bf |
child 2043 | efb1058baa31 |
permissions | -rw-r--r-- |
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config CC_GCC_ENABLE_TARGET_OPTSPACE |
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bool |
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prompt "Optimize gcc libs for size" |
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default y |
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help |
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Pass --enable-target-optspace to crossgcc's configure. |
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This will compile crossgcc's libs with -Os. |
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comment "Misc. obscure options." |
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config CC_CXA_ATEXIT |
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bool |
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prompt "Use __cxa_atexit" |
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default y |
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depends on ! BARE_METAL |
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help |
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If you get the missing symbol "__cxa_atexit" when building C++ programs, |
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you might want to try disabling this option. |
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|
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config CC_GCC_DISABLE_PCH |
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bool |
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prompt "Do not build PCH" |
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default n |
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help |
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Say 'y' here to not use Pre-Compiled Headers in the resulting toolchain. |
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at the expense of speed when compiling C++ code. |
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For some configurations (most notably canadian?), PCH are broken, and |
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need to be disabled. Please see: |
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http://gcc.gnu.org/bugzilla/show_bug.cgi?id=40974 |
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config CC_GCC_SJLJ_EXCEPTIONS |
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tristate |
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prompt "Use sjlj for exceptions" |
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default m |
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help |
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'sjlj' is short for setjmp/longjmp. |
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On some architectures, stack unwinding during exception handling |
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works perfectly well without using sjlj, while on some others, |
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use of sjlj is required for proper stack unwinding. |
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Option | sjlj use | Associated ./configure switch |
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---------+--------------------+-------------------------------- |
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Y | forcibly used | --enable-sjlj-exceptions |
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M | auto | (none, ./configure decides) |
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N | forcibly not used | --disable-sjlj-exceptions |
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It should be safe to say 'M' or 'N'. |
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It can happen that ./configure is wrong in some cases. Known |
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case is for ARM big endian, where you should say 'N'. |