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host-rust package depends on several host packages to provide tools and libraries but it doesn't take into account out host libraries in HOST_DIR while building rustc compiler. Indeed, rustc needs zlib and fails to link if zlib is not installed on the host. error: could not compile `rustc_driver` (lib) due to previous error If zlib is installed on the host, we can notice it with ldd tool (while it should be linked with the one provided by Buildroot host-zlib): ldd [...]TestRust/host/bin/rustc libz.so.1 => /lib64/libz.so.1 Provide HOST_LDFLAGS using llvm.ldflags in config.toml. (HOST_LDFLAGS provides -L$(HOST_DIR)/lib -Wl,-rpath,$(HOST_DIR)/lib) With that fixed, rustc_driver link with libz from HOST_DIR but the host-rust build still fail later due to another issue. error: could not compile `rustdoc-tool` (bin "rustdoc_tool_binary") due to previous error Fixes: https://gitlab.com/buildroot.org/buildroot/-/jobs/6256881545 http://autobuild.buildroot.org/results/a6b/a6b28783f29e6b729824bf42679a62f72ad5bee0 Signed-off-by: Romain Naour <romain.naour@smile.fr> [yann.morin.1998@free.fr: slight rewording in commit log] Signed-off-by: Yann E. MORIN <yann.morin.1998@free.fr>
Buildroot is a simple, efficient and easy-to-use tool to generate embedded Linux systems through cross-compilation. The documentation can be found in docs/manual. You can generate a text document with 'make manual-text' and read output/docs/manual/manual.text. Online documentation can be found at http://buildroot.org/docs.html To build and use the buildroot stuff, do the following: 1) run 'make menuconfig' 2) select the target architecture and the packages you wish to compile 3) run 'make' 4) wait while it compiles 5) find the kernel, bootloader, root filesystem, etc. in output/images You do not need to be root to build or run buildroot. Have fun! Buildroot comes with a basic configuration for a number of boards. Run 'make list-defconfigs' to view the list of provided configurations. Please feed suggestions, bug reports, insults, and bribes back to the buildroot mailing list: buildroot@buildroot.org You can also find us on #buildroot on OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches