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patches/uClibc/0.9.30.2/290-blackfin-nommu-fork-stub.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 From: Jie Zhang <jie.zhang@analog.com>

     2 Date: Mon, 1 Jun 2009 07:25:42 +0000 (+0000)

     3 Subject: Backport UCLIBC_HAS_STUBS config option from the upstream. This option makes uClibc... 

     4 X-Git-Url: http://blackfin.uclinux.org/git/?p=readonly-mirrors%2Ftoolchain.git;a=commitdiff_plain;h=cacea6b12bae6f6cfd08e2bbec536e9b23b342f5

     5 

     6 Backport UCLIBC_HAS_STUBS config option from the upstream. This option makes uClibc provide fork() stub on NOMMU targets. It's default off.

     7 

     8 

     9 git-svn-id: svn://localhost/svn/toolchain/trunk@3417 2adf4935-75e9-4407-93b2-34b21a1880a4

    10 ---

    11 

    12 Index: uClibc-0.9.30.2/libc/unistd/daemon.c

    13 ===================================================================

    14 --- uClibc-0.9.30.2.orig/libc/unistd/daemon.c	2010-01-13 22:22:31.000000000 +0100

    15 +++ uClibc-0.9.30.2/libc/unistd/daemon.c	2010-04-06 22:04:11.000000000 +0200

    16 @@ -55,7 +55,6 @@

    17  libc_hidden_proto(dup2)

    18  libc_hidden_proto(setsid)

    19  libc_hidden_proto(chdir)

    20 -libc_hidden_proto(fork)

    21  

    22  #ifndef __ARCH_USE_MMU__

    23  #include <sys/syscall.h>

    24 @@ -85,6 +84,8 @@

    25  	return ret;

    26  }

    27  #else

    28 +libc_hidden_proto(fork)

    29 +

    30  static inline pid_t fork_parent(void)

    31  {

    32  	switch (fork()) {
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