scripts/build/debug/000-template.sh
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 1901 bdb3a98e064b
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)
     1 # Template file for a debug utility
     2 
     3 # Put your download code here
     4 do_debug_foobar_get() {
     5     # For example:
     6     # CT_GetFile "foobar-${CT_FOOBAR_VERSION}" http://foobar.com/releases/
     7     :
     8 }
     9 
    10 # Put your extract code here
    11 do_debug_foobar_extract() {
    12     # For example:
    13     # CT_Extract "foobar-${CT_FOOBAR_VERSION}"
    14     # CT_Patch "foobar" "${CT_FOOBAR_VERSION}"
    15     :
    16 }
    17 
    18 # Put your build code here
    19 do_debug_foobar_build() {
    20     # For example:
    21     # mkdir -p "${CT_BUILD_DIR}/build-foobar"
    22     # CT_Pushd "${CT_BUILD_DIR}/build-foobar"
    23     # CT_DoExecLog CFG                                        \
    24     # "${CT_SRC_DIR}/foobar-${CT_FOOBAR_VERSION}/configure"   \
    25     #     --build=${CT_BUILD}                                 \
    26     #     --host=${CT_TARGET}                                 \
    27     #     --prefix=/usr                                       \
    28     #     --foobar-options
    29     # CT_DoExecLog ALL make
    30     # CT_DoExecLog ALL make DESTDIR="${CT_SYSROOT_DIR}" install
    31     # CT_Popd
    32     :
    33 }
    34