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patches/binutils/2.15/cross-gprof.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 --- binutils-2.15/configure.old	2004-07-21 21:36:47.000000000 -0700

     2 +++ binutils-2.15/configure	2004-07-21 21:37:08.000000000 -0700

     3 @@ -999,7 +999,7 @@

     4  

     5  # Some tools are only suitable for building in a "native" situation.

     6  # Remove these if host!=target.  

     7 -native_only="autoconf automake libtool fileutils find gawk gettext gzip hello indent m4 rcs recode sed shellutils tar textutils uudecode wdiff gprof target-groff guile perl time ash bash bzip2 prms gnuserv target-gperf"

     8 +native_only="autoconf automake libtool fileutils find gawk gettext gzip hello indent m4 rcs recode sed shellutils tar textutils uudecode wdiff target-groff guile perl time ash bash bzip2 prms gnuserv target-gperf"

     9  

    10  # Similarly, some are only suitable for cross toolchains.

    11  # Remove these if host=target.

    12 --- binutils-2.15/configure.in.old	2004-07-21 21:37:19.000000000 -0700

    13 +++ binutils-2.15/configure.in	2004-07-21 21:37:34.000000000 -0700

    14 @@ -236,7 +236,7 @@

    15  

    16  # Some tools are only suitable for building in a "native" situation.

    17  # Remove these if host!=target.  

    18 -native_only="autoconf automake libtool fileutils find gawk gettext gzip hello indent m4 rcs recode sed shellutils tar textutils uudecode wdiff gprof target-groff guile perl time ash bash bzip2 prms gnuserv target-gperf"

    19 +native_only="autoconf automake libtool fileutils find gawk gettext gzip hello indent m4 rcs recode sed shellutils tar textutils uudecode wdiff target-groff guile perl time ash bash bzip2 prms gnuserv target-gperf"

    20  

    21  # Similarly, some are only suitable for cross toolchains.

    22  # Remove these if host=target.
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