patches/uClibc/0.9.28.1/200-custom-ISA.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
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.
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diff -dur uClibc-0.9.28.orig/Rules.mak uClibc-0.9.28/Rules.mak
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--- uClibc-0.9.28.orig/Rules.mak	2005-08-18 00:49:49.000000000 +0200
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+++ uClibc-0.9.28/Rules.mak	2007-01-30 10:53:34.000000000 +0100
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@@ -168,6 +168,7 @@
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 	CPU_CFLAGS-$(CONFIG_MIPS_ISA_4)+=-mips4 -mtune=mips4
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 	CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS32)+=-mips32 -mtune=mips32
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 	CPU_CFLAGS-$(CONFIG_MIPS_ISA_MIPS64)+=-mips64 -mtune=mips32
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+	CPU_CFLAGS-$(CONFIG_MIPS_ISA_CUSTOM)+=-march=$(CONFIG_MIPS_CPU_CFLAGS_CUSTOM)
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 endif
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 ifeq ($(strip $(TARGET_ARCH)),sh)
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diff -dur uClibc-0.9.28.orig/extra/Configs/Config.mips uClibc-0.9.28/extra/Configs/Config.mips
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--- uClibc-0.9.28.orig/extra/Configs/Config.mips	2005-08-18 00:49:41.000000000 +0200
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+++ uClibc-0.9.28/extra/Configs/Config.mips	2007-01-30 10:52:12.000000000 +0100
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@@ -63,4 +63,16 @@
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 config CONFIG_MIPS_ISA_MIPS64
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 	bool "MIPS64"
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+config CONFIG_MIPS_ISA_CUSTOM
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+	bool "Custom"
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+
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 endchoice
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+
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+config CONFIG_MIPS_CPU_CFLAGS_CUSTOM
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+	string
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+	prompt "Custon ISA"
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+	depends on CONFIG_MIPS_ISA_CUSTOM
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+	default ""
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+	help
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+	  Enter your custom ISA here (eg: lx4189!).
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+