[Buildroot] [PATCH] toolchain-external: download: add <CROSS>-cc symlink if not present

[Peter Korsgaard]

>>>>> "Thomas" == Thomas Petazzoni <thomas.petazzoni at bootlin.com> writes:

Hi,

 > Hello,
 > On Mon, 17 Dec 2018 09:19:34 +0100, Peter Korsgaard wrote:
 >> Fixes:
 >> http://autobuild.buildroot.net/results/dbb/dbb3c4634d5fc726ca0b27c2dac0befbbab70912
 >> http://autobuild.buildroot.net/results/dbb/dbb69acadc20b4bb559311348eca276c1e6343f7
 >> 
 >> Some external toolchains do not have a <CROSS>-cc binary/symlink, which is
 >> used by some packages.  As a workaround, add a symlink to <CROSS>-gcc.
 >> 
 >> Notice that we can only do this for external toolchains we download
 >> ourselves, and not pre-installed ones as we might not have write access to
 >> them.

 > This is not great, as it doesn't fix the problem in all cases.

Correct, but I don't really see how?

 > What about doing this *after* the toolchain has been installed in
 > $(HOST_DIR), where we have write access ?

But we do not copy a pre-installed toolchain? We only setup symlinks.

 > I.E:

 > output/host/bin (master)$ ls -l
 > total 108
 > lrwxrwxrwx 1 thomas thomas 104 Dec 17 10:09
 > arm-linux-gnueabihf-addr2line ->
 > /home/thomas/Downloads/gcc-arm-8.2-2018.08-x86_64-arm-linux-gnueabihf//bin/arm-linux-gnueabihf-addr2line
 > lrwxrwxrwx 1 thomas thomas 97 Dec 17 10:09 arm-linux-gnueabihf-ar ->
 > /home/thomas/Downloads/gcc-arm-8.2-2018.08-x86_64-arm-linux-gnueabihf//bin/arm-linux-gnueabihf-ar
 > lrwxrwxrwx 1 thomas thomas 97 Dec 17 10:09 arm-linux-gnueabihf-as ->
 > /home/thomas/Downloads/gcc-arm-8.2-2018.08-x86_64-arm-linux-gnueabihf//bin/arm-linux-gnueabihf-as
 > lrwxrwxrwx 1 thomas thomas    17 Dec 17 10:09 arm-linux-gnueabihf-c++ -> toolchain-wrapper
 > lrwxrwxrwx 1 thomas thomas 102 Dec 17 10:09
 > arm-linux-gnueabihf-c++filt ->
 > /home/thomas/Downloads/gcc-arm-8.2-2018.08-x86_64-arm-linux-gnueabihf//bin/arm-linux-gnueabihf-c++filt
 > lrwxrwxrwx 1 thomas thomas    17 Dec 17 10:09 arm-linux-gnueabihf-cpp -> toolchain-wrapper
 > lrwxrwxrwx 1 thomas thomas 102 Dec 17 10:09
 > arm-linux-gnueabihf-elfedit ->
 > /home/thomas/Downloads/gcc-arm-8.2-2018.08-x86_64-arm-linux-gnueabihf//bin/arm-linux-gnueabihf-elfedit
 > lrwxrwxrwx 1 thomas thomas    17 Dec 17 10:09 arm-linux-gnueabihf-g++ -> toolchain-wrapper
 > lrwxrwxrwx 1 thomas thomas    17 Dec 17 10:09 arm-linux-gnueabihf-gcc -> toolchain-wrapper
 > lrwxrwxrwx 1 thomas thomas    17 Dec 17 10:09 arm-linux-gnueabihf-gcc-8.2.1 -> toolchain-wrapper
 > lrwxrwxrwx 1 thomas thomas 101 Dec 17 10:09 arm-linux-gnueabihf-gcc-ar
 -> 
 > /home/thomas/Downloads/gcc-arm-8.2-2018.08-x86_64-arm-linux-gnueabihf//bin/arm-linux-gnueabihf-gcc-ar

 > Add a -cc -> toolchain-wrapper symlink ?

That will not work, as it will then try to execute 
/home/thomas/Downloads/gcc-arm-8.2-2018.08-x86_64-arm-linux-gnueabihf//bin/arm-linux-gnueabihf-cc
(which does not exist)

-- 
Bye, Peter Korsgaard