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Since upstream commit 0c716a157be460006a4b762625de329b5e36dbf9 (first
release: v2026.07) mkeficapsule supports PKCS#11 keys, and in turn
requires GnuTLS with PKCS#11 support.
Without it, building mkeficapsule for the target fails:
HOSTLD tools/mkeficapsule
/home/fiona/br-test-pkg/bootlin-armv5-uclibc/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-uclibcgnueabi/14.3.0/../../../../arm-buildroot-linux-uclibcgnueabi/bin/ld: tools/mkeficapsule.o: in function `main':
mkeficapsule.c:(.text.startup+0x530): undefined reference to `gnutls_pkcs11_init'
/home/fiona/br-test-pkg/bootlin-armv5-uclibc/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-uclibcgnueabi/14.3.0/../../../../arm-buildroot-linux-uclibcgnueabi/bin/ld: mkeficapsule.c:(.text.startup+0x544): undefined reference to `gnutls_pkcs11_add_provider'
/home/fiona/br-test-pkg/bootlin-armv5-uclibc/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-uclibcgnueabi/14.3.0/../../../../arm-buildroot-linux-uclibcgnueabi/bin/ld: mkeficapsule.c:(.text.startup+0x5fc): undefined reference to `gnutls_pkcs11_obj_list_import_url4'
/home/fiona/br-test-pkg/bootlin-armv5-uclibc/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-uclibcgnueabi/14.3.0/../../../../arm-buildroot-linux-uclibcgnueabi/bin/ld: mkeficapsule.c:(.text.startup+0x620): undefined reference to `gnutls_x509_crt_import_pkcs11'
/home/fiona/br-test-pkg/bootlin-armv5-uclibc/host/opt/ext-toolchain/bin/../lib/gcc/arm-buildroot-linux-uclibcgnueabi/14.3.0/../../../../arm-buildroot-linux-uclibcgnueabi/bin/ld: mkeficapsule.c:(.text.startup+0x1334): undefined reference to `gnutls_pkcs11_deinit'
collect2: error: ld returned 1 exit status
The error can be reproduced using "utils/test-pkg -c" with the
following config:
BR2_PACKAGE_UBOOT_TOOLS=y
BR2_PACKAGE_UBOOT_TOOLS_MKEFICAPSULE=y
For host-uboot-tools this was solved in Buildroot commit
6597563da7 "package/gnutls: add host
support for pkcs11" by unconditionally enabling PKCS#11 support for
host-gnutls. For the target a more fine-grained approach is desirable,
so instead select BR2_PACKAGE_P11_KIT if
BR2_PACKAGE_UBOOT_TOOLS_MKEFICAPSULE=y and propagate dependencies.
Signed-off-by: Fiona Klute <fiona.klute@gmx.de>
Signed-off-by: Julien Olivain <ju.o@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 https://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