On Thu, Dec 2, 2021 at 10:20 AM Stefan Ring <stefanrin@xxxxxxxxx> wrote: > > On Mon, Nov 29, 2021 at 8:40 PM Mr Dini via Gcc-help > <gcc-help@xxxxxxxxxxx> wrote: > > > > I am sure this is not a common practice, but since I couldn't get gcc to compile and I am out of ideas as to why libgcc is not picking up the environment variables, I decided to share the chroot I am trying to build from. > > > > The file can be found here: https://mega.nz/file/qqBB2QKZ#mQVV3Vqyre6MYtdGJlx2rNq7el8Aiimr6uv4aTZR97g > > > > When I chroot I firstly run the command to populate the environment variables: > > > > . /opt/webos-sdk-x86_64/1.0.g/environment-setup-armv7a-neon-webos-linux-gnueabi > > > > Then execute the following commands to start the build process: > > > > cd /root/gcc-build > > > > CC="arm-webos-linux-gnueabi-gcc -march=armv7-a -mfpu=neon -mfloat-abi=softfp --sysroot=/opt/webos-sdk-x86_64/1.0.g/sysroots/armv7a-neon-webos-linux-gnueabi" CXX="arm-webos-linux-gnueabi-g++ -march=armv7-a -mfpu=neon -mfloat-abi=softfp --sysroot=/opt/webos-sdk-x86_64/1.0.g/sysroots/armv7a-neon-webos-linux-gnueabi" ../gcc-6.2.0/configure --prefix=/opt/webos-sdk-x86_64/1.0.g/sysroots/armv7a-neon-webos-linux-gnueabi --with-mpfr=/opt/webos-sdk-x86_64/1.0.g/sysroots/armv7a-neon-webos-linux-gnueabi --host=armv7a-linux-gnueabi --target=armv7a-linux-gnueabi --build=x86_64-linux-gnu > > > > make -j8 > > > > Right now, the folder contains a state where it fails with stdio.h no such file or directory. If you skip the configure part and run make -j8 directly after setting the env vars, you can see what's going on. > > > > I appreciate any feedback! > > > > Thanks Running the toolchain gcc with -v reveals that it was configured with --with-sysroot=/not/exist. ;) So I got a little creative and used: mkdir /not ln -s /opt/webos-sdk-x86_64/1.0.g/sysroots/armv7a-neon-webos-linux-gnueabi /not/exist Then I set: export PATH=/opt/webos-sdk-x86_64/1.0.g/sysroots/x86_64-webossdk-linux/usr/bin/arm-webos-linux-gnueabi:$PATH and only this. Forget about all the crap in /opt/webos-sdk-x86_64/1.0.g/environment-setup-armv7a-neon-webos-linux-gnueabi! Then /root/gcc-6.2.0/configure --prefix=/opt/webos-sdk-x86_64/1.0.g/sysroots/armv7a-neon-webos-linux-gnueabi --build= --host=arm-webos-linux-gnueabi --target=arm-webos-linux-gnueabi --with-sysroot=/ --with-build-sysroot=/opt/webos-sdk-x86_64/1.0.g/sysroots/armv7a-neon-webos-linux-gnueabi --with-float=softfp --with-fpu=neon --with-arch=armv7-a --enable-languages=c,c++ --disable-multilib --with-mpfr=/opt/webos-sdk-x86_64/1.0.g/sysroots/armv7a-neon-webos-linux-gnueabi make -j8 gives me a working build. At least a build running to completion. If it actually works I cannot tell because I do not own the target. The --with-build-sysroot is not strictly necessary because of the /not/exist trick, but I consider it good taste. I’m also not sure about the --with-sysroot=/. It may or may not help or hurt. Also, your --prefix is probably not the best idea. Just use something short like /usr/gcc6 or similar, and install with make install DESTDIR=<somewhere>.
