patches/gcc/4.1.1/303-c99-complex-ugly-hack.patch
author |
"Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> |
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Sun May 20 13:48:26 2007 +0000 (2007-05-20) |
changeset 112 |
ea15433daba0 |
permissions |
-rw-r--r-- |
Ah! I finally have a progress bar that doesn't stall the build!
- pipe size in Linux is only 8*512=4096 bytes
- pipe size is not setable
- when the feeding process spits out data faster than the eating
process can read it, then the feeding process stalls after 4KiB
of data sent to the pipe
- for us, the progress bar would spawn a sub-shell every line,
and the sub-shell would in turn spawn a 'date' command.
Which was sloooww as hell, and would cause some kind of a
starvation: the pipe was full most of the time, and the
feeding process was stalled all this time.
Now, we use internal variables and a little hack based onan offset
to determine the elapsed time. Much faster this way, but still
CPU-intensive.
yann@1
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--- gcc-4.0.0/libstdc++-v3/configure-old 2005-04-30 22:04:48.061603912 -0500
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yann@1
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+++ gcc-4.0.0/libstdc++-v3/configure 2005-04-30 22:06:13.678588152 -0500
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yann@1
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@@ -7194,6 +7194,9 @@
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yann@1
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cat >>conftest.$ac_ext <<_ACEOF
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yann@1
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/* end confdefs.h. */
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yann@1
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#include <complex.h>
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yann@1
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+#ifdef __UCLIBC__
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yann@1
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+#error ugly hack to make sure configure test fails here for cross until uClibc supports the complex funcs
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yann@1
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+#endif
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yann@1
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int
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yann@1
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main ()
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yann@1
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{
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