No, the dynamic linker shouldn't be removing _49. It means QT was built against a different version than the icu that 
ships with QNX 6.6. Specifically it means that icu was configured with api versioning.

Regards,

Ryan Mansfield
‎
Sent from my BlackBerry 10 smartphone on the Rogers network.
  Original Message  
From: Dennis Kellly
Sent: Thursday, March 13, 2014 8:14 AM
To: general-toolchain
Reply To: general-toolchain@community.qnx.com
Subject: 6.6: Dynamic link question

I am having runtime problems with a set of (pre-release) Qt5 libraries provided by QNX. Specifically, the involves 
runtime resolving symbols in the 6.6 SDP "icu" libraries. (No problems building the binary.)

Library usr/lib/libicuuc.so.49 contains a function "u_strToLower"

C:\QNX660\target\qnx6\armle-v7>ntoarmv7-objdump -x usr\lib\libicuuc.so.49 | grep u_strToLower
0009d9e0 g F .text 00000094 u_strToLower

When I run any Qt5 binary which I compile using 6.6 toolchain I get an unresolved message:

/inputck
unknown symbol: u_strToLower_49 referenced from libQt5Core.so.5
unknown symbol: u_strToUpper_49 referenced from libQt5Core.so.5
ldd:FATAL: Could not resolve all symbols

DL_DEBUG=1 runtime output includes these lines:

debug: searchpath:1695:/usr/lib/libicuuc.so.49: success
libs: /usr/lib/libicuuc.so.49: found; real path:/usr/lib/libicuuc.so.49
libs: load_elf: Shared library base: 0x7a410000
libs: load_elf: libicuuc.so.49 relro segment is now lazy mapping; 7a4f1000-7a4fa000
libs: load_elf: loaded lib at addr 7a410000(text) 7a4f1770(data)
libs: object libicuuc.so.49 loaded; real soname: libicuuc.so.49 loaded from: /usr/lib/libicuuc.so.49
debug: Added libicuuc.so.49 to link map

What is the deal with the unresolved name "u_strToLower_49" ? Sounds like the "_49" should have been removed by the 
runtime linker/loader.

Thanks for any input.




_______________________________________________

General
http://community.qnx.com/sf/go/post109396
To cancel your subscription to this discussion, please e-mail general-toolchain-unsubscribe@community.qnx.com