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Since the bump of libcap to 2.42, host-libcap unconditionally tries to build a shared library, which fails on build machines where the static version of the C library is not available. This issue was reported upstream, who fixed it by two different commits, which are backported as patches 0001 and 0002. They require passing a DYNAMIC= value, which should be "yes" to enable dynamic linking, or empty when not using dynamic linking. However, other upstream changes broke our logic to support static-only linking for the target. So we introduce a 0003 patch which extends how the DYNAMIC flag is used to disable the build of the shared library in the libcap/ folder. This allows to greatly simplify libcap.mk. Note that the refactoring is mixed with the fix: the two are hardly splitable. We need to be able to pass the same options at all steps, and especially the staging step, otherwise some code gets compiled with the host compiler, installed in staging, and thus fails the architecture check later on. Fixes: host-libcap build failure on system without a static libc http://autobuild.buildroot.net/results/4b14458014e420ffe088f118e7d0261e67f2d551/ libcap build failure on static only systems http://autobuild.buildroot.net/results/8961759067c4639ae697b6ee5db606f098b7c7e8/ Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> [yann.morin.1998@free.fr: - also pass DYNAMIC=yes at host-install step - extend commit log to explain why we refactor and fix together ] 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 Freenode IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches