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patches/glibc/linuxthreads-2.3.5/glibc-linuxthreads-2.3.5-cygwin.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. 
     1 Fixes

     2 elf/librtld.os: In function `process_envvars': : undefined reference to `__access'

     3 ...

     4 when building glibc-2.3.3 on cygwin

     5 

     6 Idea from

     7 http://sources.redhat.com/ml/bug-glibc/2002-01/msg00071/glibc-2.2-cygin-shared.patch

     8 Basically, make glibc use .oST as suffix for 'object static'

     9 instead of .oS, since cygwin has trouble distinguishing .os from .oS

    10 (Original patch had .on, but .oST is more mnemonic for 'object static')

    11 

    12 glibc-linuxthreads-2.3.3 also requires a patch, see 

    13 ../glibc-linuxthreads-2.3.3/glibc-linuxthreads-2.3.3-cygwin.patch

    14 

    15 [ rediffed against glibc-2.3.5 ]

    16 

    17 diff -aur glibc-2.3.5/linuxthreads/Makefile glibc-2.3.5-cygwin/linuxthreads/Makefile

    18 --- glibc-2.3.5/linuxthreads/Makefile	2005-02-16 12:26:38.000000000 +0100

    19 +++ glibc-2.3.5-cygwin/linuxthreads/Makefile	2005-05-11 08:32:50.453125000 +0200

    20 @@ -159,7 +159,7 @@

    21  install: $(inst_libdir)/libpthread.so

    22  $(inst_libdir)/libpthread.so: $(common-objpfx)format.lds \

    23  			      $(objpfx)libpthread.so$(libpthread.so-version) \

    24 -			      $(inst_libdir)/$(patsubst %,$(libtype.oS),\

    25 +			      $(inst_libdir)/$(patsubst %,$(libtype.oST),\

    26  							$(libprefix)pthread) \

    27  			      $(+force)

    28  	(echo '/* GNU ld script';\

    29 @@ -167,7 +167,7 @@

    30  	 echo '   the static library, so try that secondarily.  */';\

    31  	 cat $<; \

    32  	 echo 'GROUP ( $(slibdir)/libpthread.so$(libpthread.so-version)' \

    33 -	      '$(libdir)/$(patsubst %,$(libtype.oS),$(libprefix)pthread)'\

    34 +	      '$(libdir)/$(patsubst %,$(libtype.oST),$(libprefix)pthread)'\

    35  	      ')' \

    36  	) > $@.new

    37  	mv -f $@.new $@
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