patches/gcc/4.4.2/260-sh-libgcc-stacks.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
parent 1544 2228ea3f6b79
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>
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diff -durN gcc-4.4.0.orig/gcc/config/sh/lib1funcs.asm gcc-4.4.0/gcc/config/sh/lib1funcs.asm
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--- gcc-4.4.0.orig/gcc/config/sh/lib1funcs.asm	2009-04-10 01:23:07.000000000 +0200
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+++ gcc-4.4.0/gcc/config/sh/lib1funcs.asm	2009-05-27 21:38:39.000000000 +0200
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@@ -30,6 +30,11 @@
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 !! recoded in assembly by Toshiyasu Morita
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 !! tm@netcom.com
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+#if defined(__ELF__) && defined(__linux__)
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+.section .note.GNU-stack,"",%progbits
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+.previous
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+#endif
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+
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 /* SH2 optimizations for ___ashrsi3, ___ashlsi3, ___lshrsi3 and
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    ELF local label prefixes by J"orn Rennecke
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    amylaar@cygnus.com  */
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diff -durN gcc-4.4.0.orig/gcc/config/sh/linux-atomic.asm gcc-4.4.0/gcc/config/sh/linux-atomic.asm
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--- gcc-4.4.0.orig/gcc/config/sh/linux-atomic.asm	2009-04-10 01:23:07.000000000 +0200
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+++ gcc-4.4.0/gcc/config/sh/linux-atomic.asm	2009-05-27 21:38:39.000000000 +0200
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@@ -136,3 +136,6 @@
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 ATOMIC_FETCH_AND_COMBOP(nand,and,not,4,l,mov)
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 #endif /* ! __SH5__ */
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+
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+.section .note.GNU-stack,"",%progbits
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+.previous