Gregory Haskins wrote: > On Thu, 2007-10-04 at 18:33 +0200, Farkas Levente wrote: > >> hi, >> what's the real reason that kvm can't be compiled gcc-4.x? >> wouldn't it be better to be able to compile with the current compilers too? >> > > Its actually an issue with QEMUs cpu emulation code. It takes advantage > of compiler traits that are no longer true in the 4.x series. The code > will actually compile under 4.x however. It just will not run properly. > However, KVM doesn't use QEMUs cpu emulation, so if you do not care > about running with KVM disabled (e.g. -no-kvm), you don't technically > need to worry about it. >
FWIW, there are patches that allow QEMU to compile and work with GCC 4 but, so far, certain folks in the QEMU community have objected strongly to them (look for the threads about post-processing GCC assembly output). Those patches do work with KVM (and -no-kvm still works). However, it would be a bad idea to apply them to the KVM QEMU tree b/c it would make merging in the future much more difficult. Regards, Anthony Liguori > Hope that helps. > -Greg > > >> SourceForge.net wrote: >> >>> Bugs item #1807620, was opened at 2007-10-04 18:25 >>> Message generated for change (Tracker Item Submitted) made by Item Submitter >>> You can respond by visiting: >>> https://sourceforge.net/tracker/?func=detail&atid=893831&aid=1807620&group_id=180599 >>> >>> Please note that this message will contain a full copy of the comment >>> thread, >>> including the initial issue submission, for this request, >>> not just the latest update. >>> Category: None >>> Group: None >>> Status: Open >>> Resolution: None >>> Priority: 5 >>> Private: No >>> Submitted By: Technologov (technologov) >>> Assigned to: Nobody/Anonymous (nobody) >>> Summary: KVM's --disable-gcc-check doesn't work >>> >>> Initial Comment: >>> KVM's configure switch: "--disable-gcc-check" doesn't work. >>> >>> This bug makes KVM very hard to compile on openSUSE 10.2/10.3, which, >>> unlike Fedora doesn't have compat-gcc-34 package. >>> >>> Here is the error: >>> >>> [EMAIL PROTECTED]:~/Linstall/kvm-45> ./configure --disable-gcc-check >>> ./configure: cannot locate gcc 3.x. please install it or specify with >>> --qemu-cc >>> >>> According to HELP, it should work: >>> [EMAIL PROTECTED]:~/Linstall/kvm-45> ./configure --help >>> Usage: ./configure [options] >>> >>> Options include: >>> >>> --prefix=PREFIX where to install things (/usr/local) >>> --with-patched-kernel don't use external module >>> --kerneldir=DIR kernel build directory >>> (/lib/modules/2.6.22.5-31-bigsmp/build) >>> --qemu-cc="" compiler for qemu (needs gcc3.x) () >>> --disable-gcc-check don't insist on gcc-3.x >>> - this will break running without kvm >>> >>> >>> Host: openSUSE 10.3, 32-bit, Intel Core 2 CPU, KVM-45. >>> >>> -Alexey Technologov >>> >>> ---------------------------------------------------------------------- >>> >>> You can respond by visiting: >>> https://sourceforge.net/tracker/?func=detail&atid=893831&aid=1807620&group_id=180599 >>> >>> ------------------------------------------------------------------------- >>> This SF.net email is sponsored by: Splunk Inc. >>> Still grepping through log files to find problems? Stop. >>> Now Search log events and configuration files using AJAX and a browser. >>> Download your FREE copy of Splunk now >> http://get.splunk.com/ >>> _______________________________________________ >>> kvm-devel mailing list >>> kvm-devel@lists.sourceforge.net >>> https://lists.sourceforge.net/lists/listinfo/kvm-devel >>> >>> >> >> ------------------------------------------------------------------------ >> >> ------------------------------------------------------------------------- >> This SF.net email is sponsored by: Splunk Inc. >> Still grepping through log files to find problems? Stop. >> Now Search log events and configuration files using AJAX and a browser. >> Download your FREE copy of Splunk now >> http://get.splunk.com/ >> ------------------------------------------------------------------------ >> >> _______________________________________________ >> kvm-devel mailing list >> kvm-devel@lists.sourceforge.net >> https://lists.sourceforge.net/lists/listinfo/kvm-devel >> ------------------------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Still grepping through log files to find problems? Stop. Now Search log events and configuration files using AJAX and a browser. Download your FREE copy of Splunk now >> http://get.splunk.com/ _______________________________________________ kvm-devel mailing list kvm-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/kvm-devel
