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libnspr currently passes --enable-thumb2 if the CPU has thumb instructions. This option will pass -mthumb to the compiler. However, if an external multilib toolchain is used that has a thumb-specific variant (e.g. Sourcery), it will try to use that one. But we only copy a single variant to the sysroot, so the build will fail with: .../arm-none-linux-gnueabi/bin/ld: cannot find crti.o: No such file or directory ... collect2: error: ld returned 1 exit status ../../config/rules.mk:303: recipe for target 'libnspr4.so' failed We can in fact just remove the thumb2 handling. With current libnspr, the thumb and thumb2 options just add -marm and -mthumb. But we already pass that in our toolchain wrapper so it's completely redundant. Note that when nothing is passed, the configure script still tries to autodetect whether thumb2 is available (but doesn't do it correctly, see the error above), but in the end it doesn't use the result for anything. In other words, even if it detects that thumb2 is available, it will _not_ pass -mthumb to the compiler. Signed-off-by: Arnout Vandecappelle (Essensium/Mind) <arnout@mind.be> Signed-off-by: Peter Korsgaard <peter@korsgaard.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.