patches/glibc/linuxthreads-2.3.6/100-cygwin.patch
author Anthony Foiani <anthony.foiani@gmail.com>
Thu May 19 23:06:16 2011 +0200 (2011-05-19)
changeset 2461 ec30b191f0e3
parent 402 197e1b49586e
permissions -rw-r--r--
complibs/ppl: build only C and C++ interfaces for PPL

By default, PPL wants to build interfaces for any of a variety of
langauges it finds on the local host (python, java, possibly perl, also
more esoteric languages such as ocaml and prolog).

These extra interfaces can double the compile time for the library. For
single-process builds, I found a savings of more than 40%:

default / j1: 716s total, 143.2s avg, 0.52s stdev
just_c / j1: 406s total, 81.2s avg, 0.33s stdev
just_c_cpp / j1: 413s total, 82.6s avg, 0.22s stdev

And for multi-process builds, it approached 50%:

default / j4: 625s total, 125.0s avg, 0.57s stdev
just_c / j4: 338s total, 67.6s avg, 1.25s stdev
just_c_cpp / j4: 327s total, 65.4s avg, 0.36s stdev

Since the PPL we build within ct-ng is only used by GCC, we only need to
build the C and C++ interfaces.

Signed-Off-By: Anthony Foiani <anthony.foiani@gmail.com>
     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 $@