support/config-fragments: fix bootlin-x86-i686-musl
Commit a8be4a04ad "support/config-fragments: replace
br-i386-pentium-mmx-musl" replaced this old toolchain by
bootlin-x86-i686-musl.
When using test-pkg with all toolchains, bootlin-x86-i686-musl is always
failing. The issue can be reproduced with for example:
utils/test-pkg -a -p busybox
The issue can also be reproduced with a simple config like:
cat > .config <<EOF
BR2_i386=y
BR2_TOOLCHAIN_EXTERNAL=y
BR2_TOOLCHAIN_EXTERNAL_BOOTLIN=y
BR2_TOOLCHAIN_EXTERNAL_BOOTLIN_X86_I686_MUSL_STABLE=y
BR2_PACKAGE_BUSYBOX=y
EOF
make olddefconfig
make
Compilation fail with output:
Cannot execute cross-compiler '/i586-linux-gcc'
This issue happen is because the toolchain can never be selected.
The config fragment [1] selects BR2_i386 alone.
The target architecture variant default to i586 if target
architecture is i386. See [2].
Finally, the generated toolchain options includes a depends on
BR2_i386 and !BR2_x86_i586, making the toolchain always ignored.
See [3].
This commit fixes the issue by adding BR2_x86_i686=y to the
bootlin-x86-i686-musl.config fragment as suggested by the
Bootlin toolchain fragment [4].
[1] https://gitlab.com/buildroot.org/buildroot/-/blob/a8be4a04ade8e695c5c4d4a825253d69e80693f9/support/config-fragments/autobuild/bootlin-x86-i686-musl.config
[2] https://gitlab.com/buildroot.org/buildroot/-/blob/2024.02.2/arch/Config.in.x86?ref_type=tags#L38
[3] https://gitlab.com/buildroot.org/buildroot/-/blob/345ccb523e/toolchain/toolchain-external/toolchain-external-bootlin/Config.in.options#L5768-5770
[4] https://toolchains.bootlin.com/downloads/releases/toolchains/x86-i686/fragments/x86-i686--musl--stable-2024.02-1.frag
Signed-off-by: Julien Olivain <ju.o@free.fr>
[Romain: add the link to the Bootlin toolchain fragment]
Signed-off-by: Romain Naour <romain.naour@smile.fr>
Julien Olivain