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Some packages, like libbsd, use -isystem flags to provide so-called overrides to the system include files. In this particular case, this is used in a .pc file, then used by antoher package; pkgconf does not mangle this path; and eventually that other package ends up using /usr/include/bsd to search for headers. Our current toolchain wrapper is limited to looking for -I and -L, so the paranoid check does not kick in. Furthermore, as noticed by Arnout, there might be a bunch of other so-unsafe options: -isysroot, -imultilib, -iquote, -idirafter, -iprefix, -iwithprefix, -iwithprefixbefore; even -B and --sysroot are unsafe. Extend the paranoid check to be able to check any arbitrary number of potentially unsafe options: - add a list of options to check for, each with their length, - iterate over this list until we find a matching unsafe option. Compared to previously, the list of options include -I and -L (which we already had) extended with -idirafter, -iquote and -isystem, but leaving all the others noticed by Arnout away, until we have a reason for handling them. Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr> Cc: Thomas Petazzoni <thomas.petazzoni@free-electrons.com> Cc: Arnout Vandecappelle <arnout@mind.be> Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.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