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patches/glibc/2.6.1/180-gcc-4.3-sysinclude-path.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Sun Sep 12 23:51:25 2010 +0200 (2010-09-12)
changeset 2123 ff2181adbd28
permissions -rw-r--r--
cc/gcc: disable complibs if not selected

Force gcc to not link with some companion libraries when
there are not needed (because selected-out).

There is no option to tell gcc *not* to build the Graphite and/or
LTO stuff. They *will* be built if gcc finds the suitable companion
libraries. If we do not provide them, but the host has them, then
gcc *will* find them, and link with them.

Consider the following:
- host has suitable PPL and CLooG (eg. Debian Squeeze)
- user wants to build gcc>=4.4
- user de-selects GRAPHITE
- gcc will find the hosts PPL and CLooG, and will use them
- the user moves the toolchain to an older host that does
not have them (eg. Debian Lenny)
- the toolchain fails, when it was properly setup not to

So, explicitly tell gcc *not* to use unneeded companion libs.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr> 
     1 Patch pointed to by Ryan ARNOLD on the libc-help ML.

     2 See: http://sourceware.org/ml/libc-help/2008-06/msg00063.html

     3 

     4 Forwarded to crosstool-NG by Ioannis E. VENETIS:

     5 See: http://sourceware.org/ml/libc-help/2008-06/msg00063.html

     6 

     7 GCC 4.3 changed the location of some of the header files.  I don't

     8 understand why you'd be getting these errors while building GCC since

     9 it provides them.

    10 

    11 With regard to GLIBC, Roland checked in some changes so that the GLIBC

    12 build system could find the new locations of the GCC provided header

    13 files.

    14 

    15 diff -durN glibc-2.6.1.orig/configure.in glibc-2.6.1/configure.in

    16 --- glibc-2.6.1.orig/configure.in	2007-06-08 05:16:36.000000000 +0200

    17 +++ glibc-2.6.1/configure.in	2008-06-24 18:38:46.000000000 +0200

    18 @@ -911,8 +911,12 @@

    19  # header directory and add that to the list.  NOTE: Only does the right

    20  # thing on a system that doesn't need fixincludes.  (Not presently a problem.)

    21  if test -n "$sysheaders"; then

    22 -  ccheaders=`$CC -print-file-name=include`

    23 -  SYSINCLUDES="-nostdinc -isystem $ccheaders \

    24 +  SYSINCLUDES=-nostdinc

    25 +  for d in include include-fixed; do

    26 +    i=`$CC -print-file-name="$d"` && test "x$i" != x && test "x$i" != "x$d" &&

    27 +    SYSINCLUDES="$SYSINCLUDES -isystem $i"

    28 +  done

    29 +  SYSINCLUDES="$SYSINCLUDES \

    30  -isystem `echo $sysheaders | sed 's/:/ -isystem /g'`"

    31    if test -n "$CXX"; then

    32      cxxversion=`$CXX -dumpversion 2>&AS_MESSAGE_LOG_FD` &&

    33 diff -durN glibc-2.6.1.orig/configure glibc-2.6.1/configure

    34 --- glibc-2.6.1.orig/configure	2008-06-24 18:35:34.000000000 +0200

    35 +++ glibc-2.6.1/configure	2008-06-24 18:38:46.000000000 +0200

    36 @@ -4562,8 +4562,12 @@

    37  # header directory and add that to the list.  NOTE: Only does the right

    38  # thing on a system that doesn't need fixincludes.  (Not presently a problem.)

    39  if test -n "$sysheaders"; then

    40 -  ccheaders=`$CC -print-file-name=include`

    41 -  SYSINCLUDES="-nostdinc -isystem $ccheaders \

    42 +  SYSINCLUDES=-nostdinc

    43 +  for d in include include-fixed; do

    44 +    i=`$CC -print-file-name="$d"` && test "x$i" != "x$d" &&

    45 +    SYSINCLUDES="$SYSINCLUDES -isystem $i"

    46 +  done

    47 +  SYSINCLUDES="$SYSINCLUDES \

    48  -isystem `echo $sysheaders | sed 's/:/ -isystem /g'`"

    49    if test -n "$CXX"; then

    50      cxxversion=`$CXX -dumpversion 2>&5` &&
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