patches/gcc/4.4.2/130-cross-compile.patch
author "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
Tue Dec 13 23:32:39 2011 +0100 (2011-12-13)
branch1.13
changeset 2847 c0bf2319af08
parent 1544 2228ea3f6b79
permissions -rw-r--r--
scripts: fix dumping execution backtrace

Dumping the backtrace has been broken since changeset #652e56d6d35a:
scripts: execute each steps in a subshell

We can spawn sub-sub-shells in some cases.

The way the fault handler works is to dump the backtrace, but to avoid
printing it once for every sub-shell (which could get quite confusing),
it simply exits when it detects that it is being run in a sub-shell,
leaving to the top-level shell the work to dump the backtrace.

Because each step is executed in its own sub-shell, the variable arrays
that contain the step name, the source file and line number, are lost
when exiting the per-step sub-shell.

Hence, the backtrace is currently limited to printing only the top-level
main procedure of the shell.

Fix this thus:
- when dumping the bckatraces for the steps & the functions, remember
it was dumped, and only dump it if it was not already dumped
- at the top-level shell, print the hints

Also, rename the top-level step label.

Reported-by: Benoît Thébaudeau <benoit.thebaudeau@advansee.com>
Signed-off-by: "Yann E. MORIN" <yann.morin.1998@anciens.enib.fr>
(transplanted from 4193d6e6a17430a177fa88c287879c2c35e319f3)
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diff -durN gcc-4.4.0.orig/gcc/configure gcc-4.4.0/gcc/configure
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--- gcc-4.4.0.orig/gcc/configure	2009-03-24 18:46:03.000000000 +0100
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+++ gcc-4.4.0/gcc/configure	2009-05-27 21:38:06.000000000 +0200
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@@ -13997,7 +13997,7 @@
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 	    | powerpc*-*-*,powerpc64*-*-*)
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 		CROSS="$CROSS -DNATIVE_CROSS" ;;
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 	esac
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-elif test "x$TARGET_SYSTEM_ROOT" != x; then
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+elif test "x$TARGET_SYSTEM_ROOT" != x -o $build != $host; then
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         SYSTEM_HEADER_DIR=$build_system_header_dir
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 fi
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diff -durN gcc-4.4.0.orig/gcc/configure.ac gcc-4.4.0/gcc/configure.ac
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--- gcc-4.4.0.orig/gcc/configure.ac	2009-03-24 18:46:03.000000000 +0100
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+++ gcc-4.4.0/gcc/configure.ac	2009-05-27 21:38:06.000000000 +0200
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@@ -1720,7 +1720,7 @@
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 	    | powerpc*-*-*,powerpc64*-*-*)
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 		CROSS="$CROSS -DNATIVE_CROSS" ;;
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 	esac
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-elif test "x$TARGET_SYSTEM_ROOT" != x; then
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+elif test "x$TARGET_SYSTEM_ROOT" != x -o $build != $host; then
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         SYSTEM_HEADER_DIR=$build_system_header_dir 
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 fi
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diff -durN gcc-4.4.0.orig/gcc/unwind-dw2.c gcc-4.4.0/gcc/unwind-dw2.c
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--- gcc-4.4.0.orig/gcc/unwind-dw2.c	2009-04-10 01:23:07.000000000 +0200
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+++ gcc-4.4.0/gcc/unwind-dw2.c	2009-05-27 21:38:06.000000000 +0200
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@@ -329,9 +329,11 @@
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 }
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 #endif
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+#ifndef inhibit_libc
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 #ifdef MD_UNWIND_SUPPORT
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 #include MD_UNWIND_SUPPORT
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 #endif
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+#endif
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 /* Extract any interesting information from the CIE for the translation
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    unit F belongs to.  Return a pointer to the byte after the augmentation,