Date: Wed, 31 Aug 2005 08:56:55 GMT From: Bradley T Hughes <bhughes@trolltech.com> To: freebsd-gnats-submit@FreeBSD.org Subject: ports/85513: Intel C++ compiler not 100% binary compatible with system compiler Message-ID: <200508310856.j7V8utVf069330@www.freebsd.org> Resent-Message-ID: <200508310900.j7V90RFI099380@freefall.freebsd.org>
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>Number: 85513 >Category: ports >Synopsis: Intel C++ compiler not 100% binary compatible with system compiler >Confidential: no >Severity: non-critical >Priority: medium >Responsible: freebsd-ports-bugs >State: open >Quarter: >Keywords: >Date-Required: >Class: sw-bug >Submitter-Id: current-users >Arrival-Date: Wed Aug 31 09:00:27 GMT 2005 >Closed-Date: >Last-Modified: >Originator: Bradley T Hughes >Release: 6.0-BETA3 >Organization: Trolltech AS >Environment: FreeBSD reticent.troll.no 6.0-BETA3 FreeBSD 6.0-BETA3 #2: Mon Aug 29 09:25:17 CEST 2005 root@reticent.troll.no:/usr/obj/usr/src/sys/RETICENT i386 >Description: The Intel C++ compiler is supposed to be 100% binary compatible with gcc 3.4. However, this isn't the case in one specific situaion: if a shared library is compiled with the Intel compiler, an app linked with the library and then run-time linked with a library build with g++, the dynamic linker can't find the __intel_cpu_indicator symbol. >How-To-Repeat: Download, and untar http://trolls.troll.no/bhughes/icpc_bug4.tar.gz. In the icpc_bug4 directory, type 'make' - this will build libgo.so using icc, then build and link app with the icc version of libgo.so, then it removes and rebuids libgo.so with g++. >Fix: If it was possible to link with the libimf.so library shipped with the intel compiler, the problem would be solved, but we used the static version, and the link places the __intel_cpu_indicator symbol in the shared library instead of the executable. One possible solution would be to have a small shared library that defines the __intel_cpu_indicator symbol, and link that before the static libimf.a library. >Release-Note: >Audit-Trail: >Unformatted:
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