From Bugzilla Helper: User-Agent: Mozilla/5.0 (X11; U; Linux i686; en-US; rv:1.8.0.7) Gecko/20060913 Fedora/1.5.0.7-1.fc5 Firefox/1.5.0.7 Description of problem: The file linux/include/autoconf.h is auomatically generated from the .config file when you use make config/oldconfig/gconfig/etc. and should not be shipped with the kernel source. This causes a problem specifically when defining the "O" macro to the make command, e.g. "make O=/builds/kernel-build-dir". Instead of picking up the newly generated autoconf.h file in the /builds/kernel-build-dir/include/linux directory, it picks up the old ones in the source include/linux directory. This can produce unpredictable results. The ability to specify the kernel output directory is a facility that came in with the 2.6 kernel.org release. I strongly recommend using it to avoid contaminating your source directory with any generated files that shouldn't be shipped. I suggest also not shipping the .config file, but instead identify the configuration file(s) used to build the kernel(s) included in the binary kernel RPM in a README-fodora file. If it is shipped, I suggest that it should exactly match one of the configuration files in the configs directory. It is presently close, but not exactly the same. Version-Release number of selected component (if applicable): kernel-2.6.17-1.2187_FC5.src.rpm How reproducible: Always Steps to Reproduce: 1. Use "make O=/builds/kernel-build-dir mrproper" to get ready to build a kernel from scratch. 2. Use "make O=/builds/kernel-build-dir gconfig" and specify a configuration that is significantly different from that used to create the linux/autoconf.h file. For example, specify a differeny value of PHYSICAL_START. 3. Use "make O=/builds/kernel-build-dir" to start the build. Actual Results: I received warnings about CONFIG_PHYSICAL_START being redefined. I would expect that specific results might differ, depending on your build steps. Expected Results: Additional info:
linux/autoconf.h is no longer shipped in FC6. The necessary changes are unlikely to be backported to FC5.