On 23 January 2016 at 09:18, Bruce Dubbs <[email protected]> wrote: > Pierre Labastie wrote: >> >> On 23/01/2016 03:56, Bruce Dubbs wrote: >>> >>> William Harrington wrote: >>>> >>>> On Fri, January 22, 2016 18:54, Bruce Dubbs wrote: >>>>> >>>>> I'm thinking about changing the way we build packages in separate >>>>> directories. What we do now for tool chain packages is: >>>>> >>>>> mkdir -v ../binutils-build >>>>> cd ../binutils-build >>>>> >>>>> ../binutils-2.25.1/configure ... >>>>> >>>>> >>>>> I'm thinking about changing that to: >>>>> >>>>> mkdir -v build >>>>> cd build >>>>> >>>>> ../configure ... >>>>> >>>> >>>> Hello Bruce, >>>> >>>> [...] >>>> >>>> We have stuck with this for the longest time: >>>> >>>> https://gcc.gnu.org/install/configure.html >>>> >>>> "First, we highly recommend that GCC be built into a separate directory >>>> from the sources which does not reside within the source tree. This is >>>> how >>>> we generally build GCC; building where srcdir == objdir should still >>>> work, >>>> but doesn't get extensive testing; building where objdir is a >>>> subdirectory >>>> of srcdir is unsupported." >>> >>> >>> When I read that, I interpret is to mean that they build for multiple >>> targets >>> and want to keep the object files from those builds separate. >>> >>> I've modified LFS according to the attached diff. I did a full build and >>> the >>> failures in the test logs are the same as with the current book. >>> >>> Actually I cannot think of a good reason for differentiation between the >>> case >>> where objdir is completely separate from srcdir and the case where objdir >>> is a >>> subdirectory of srcdir, even though they say that case is unsupported. >>> About >>> the only thing I can think of is that they may be doing some kind of >>> recursive >>> directory search and there is some sort of match in the build tree. >>> >> >> Definitely, building with srcdir == objdir does not work: I tried that >> when I >> saw this thread, and it failed at gcc-pass1. It looks like "make" does not >> get >> the build order right in this case (I tried both with -j5 and -j1, and got >> the >> same error), or misses some dependency: > > > I definitely did not propose that. The question where does the separate > objdir need to be? I've been thinking about this some more and and will > post a summary of my thought later today. > > -- Bruce
I have been using build directories inside the extracted folders in my build scripts for a few years now, until this thread was not aware there was any concerns on it (I have never tried deleting/rebuilding leaving the original source) Personally just found it easier to delete 1 folder instead of 2. -- Nathan Coulson (conathan) ------ Location: British Columbia, Canada Timezone: PST (-8) Webpage: http://www.nathancoulson.com -- http://lists.linuxfromscratch.org/listinfo/lfs-dev FAQ: http://www.linuxfromscratch.org/faq/ Unsubscribe: See the above information page
