[haiku-bugs] Re: [Haiku] #11187: Problem running gcc4 app in a gcc2 hybrid.
- From: "modeenf" <trac@xxxxxxxxxxxx>
- Date: Mon, 01 Sep 2014 08:22:57 -0000
#11187: Problem running gcc4 app in a gcc2 hybrid.
-------------------------+----------------------------
Reporter: modeenf | Owner: nobody
Type: bug | Status: new
Priority: normal | Milestone: R1
Component: - General | Version: R1/Development
Resolution: | Keywords:
Blocked By: | Blocking:
Has a Patch: 0 | Platform: All
-------------------------+----------------------------
Comment (by modeenf):
From a mail from Ingo
Please verify
* that libstdc++.so.6 is in /system/lib/x86 (and isn't just a dead
symlink),
* that /system/lib (or /boot/system/lib) is in LIBRARY_PATH,
* that the application you are launching is indeed marked with gcc 2 ABI.
The latter can be done with objdump. Enter
objdump -D /path/to/app
(pipe to less or a file, if you like) and find the definition of symbol
_gSharedObjectHaikuABI (there's probably only one occurrence anyway). It
should look like:
00068028 <_gSharedObjectHaikuABI>:
68028: 00 00 add %al,(%eax)
6802a: 04 00 add $0x0,%al
The addresses (first column) may differ. The disassembly in the right
column is irrelevant (it's a data symbol, not code). The hex dump in the
middle column is the interesting info. "00 00 04 00" means it's gcc 4 ABI,
"02 00 02 00" would be gcc 2.
It's 04 00 so that looks ok.
If the symbol value is correct, the runtime loader should be able to
correctly identify the executable's ABI. If LIBRARY_PATH is correct, it
should search the libraries in the correct subdirectories. And if the
library is in the correct directory, it should be found.
If everything looks good and the application still cannot be started,
please run it with "strace -l" and put the output someplace we can look at
it.
CU, Ingo
--
Ticket URL: <https://dev.haiku-os.org/ticket/11187#comment:2>
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