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在 2006-06-25日的 15:29 +0800，Zhang Weiwu写道： |
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|
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> an example of trying to run gcc with -m64 on 32bit system: |
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> |
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> sappho ~ # touch abc #creates 0byte file abc |
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> sappho ~ # gcc -O2 -m64 -mcpu=ultrasparc -fomit-frame-pointer -pipe abc |
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> /usr/lib/gcc/sparc-unknown-linux-gnu/3.4.4/../../../crt1.o(.text+0x10): |
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> In function `_start': |
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> : undefined reference to `main' |
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> /usr/lib/gcc/sparc-unknown-linux-gnu/3.4.4/../../../crt1.o(.text+0x1c): |
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> In function `_start': |
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> : undefined reference to `main' |
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> collect2: ld returned 1 exit status |
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> |
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How stupid. I pasted the result without thinking. My idea is first to |
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test empty file to see if gcc can actually run instead of quitting |
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immediatly. The output is actually very sane, empty files don't have |
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main(). Shame! Hope my CS lecturer (when I was a CS student) didn't see |
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this post. |
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|
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Here is a not-so-stupid test: |
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sappho tmp # gcc -O2 -m64 -mcpu=ultrasparc -fomit-frame-pointer -pipe |
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helloworld.c |
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helloworld.c:1: error: -m64 is not supported by this configuration |
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helloworld.c:1: error: -mlong-double-64 not allowed with -m64 |
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-- |
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