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A person on IRC reported a build failure with the util-linux package, looking like this: for I in uname26 linux32 linux64 ; do \ cd /home/aep/consulting/chargery/tracker/output/target/usr/bin && ln -sf setarch $I ; \ done [...] /bin/sh: line 1: ./ln: cannot execute binary file: Exec format error /bin/sh: line 1: ./ln: cannot execute binary file: Exec format error /bin/sh: line 1: ./ln: cannot execute binary file: Exec format error The issue was an empty path in the PATH variable, which means "current working directory", causing a "ln" binary built by util-linux for the target to be used instead of the system-provided "ln". We already check a number of things in the PATH and LD_LIBRARY_PATH variables in support/dependencies/dependencies.sh, but we were not checking that PATH did not contain an empty path. This commit fixes that and takes this opportunity to simplify the test code for PATH and LD_LIBRARY_PATH. Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Thomas Petazzoni <thomas.petazzoni@bootlin.com> [Thomas: improve commit log.] Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com>
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 Freenode IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches