On 17/02/2017 07:27, Devin Duren wrote: > Hello, first time posting here. > > I am using a 64 bit Cent-OS host, and have not deviated from the book. > > LFS Version 7.10 > > > When I ran the configure script for Binutils with the options given in > section 5.4, there is a line of output that is concerning. I continued > on to GCC without much thought. But then when I searched through the > configure output for GCC I do not see the two lines mentioned in section > 5.2. > > As shown below, it seems as though it doesn't recognize we want to cross > compile. > > initial output from Binutils output: > > lfs:/mnt/lfs/sources/build$ ../binutils-2.27/configure --prefix=/tools > --with-sysroot=$LFS --with-lib-path=/tools/lib --target=$LFS_TGT > --disable-nls --disable-werror > checking build system type... x86_64-pc-linux-gnu > checking host system type... x86_64-pc-linux-gnu > checking target system type... x86_64-lfs-linux-gnu > checking for a BSD-compatible install... /bin/install -c > checking whether ln works... yes > checking whether ln -s works... yes > checking for a sed that does not truncate output... /bin/sed > checking for gawk... gawk > checking for gcc... gcc > checking for C compiler default output file name... a.out > checking whether the C compiler works... yes > checking whether we are cross compiling... no > <------------------------ line in question > checking for suffix of executables... > checking for suffix of object files... o > checking whether we are using the GNU C compiler... yes > checking whether gcc accepts -g... yes > > lines missing from GCC output: > > checking what assembler to use... /tools/i686-lfs-linux-gnu/bin/as > checking what linker to use... /tools/i686-lfs-linux-gnu/bin/ld > > Am I thinking of cross compiling correctly, or is it possible there is > nothing wrong here and I'm thinking of cross linking? > > > -Devin >
Hi, Cross compiling means that we use a special compiler (usually named a cross compiler) to generate code running on another host. We do not do that here: we build tools for a cross compiler, but those tools will be running on the host, so it is host->host compilation. Autotools can refer to three (potentially different) hosts: build: the host which is running now, building things host: the host on which the currently built software will run target (only when building compilers): the host for which the built compiler will generate code. here host=build and target is different when cross-compiling, host is different from build. target may be equal to host, or may be a third host (in which case, the built is called a Canadian cross) Pierre -- http://lists.linuxfromscratch.org/listinfo/lfs-support FAQ: http://www.linuxfromscratch.org/blfs/faq.html Unsubscribe: See the above information page Do not top post on this list. A: Because it messes up the order in which people normally read text. Q: Why is top-posting such a bad thing? A: Top-posting. Q: What is the most annoying thing in e-mail? http://en.wikipedia.org/wiki/Posting_style
