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lib/print.c in gnu-efi contains some floating point computation. On ARM soft-float configurations, these floating point operations generate calls to __eabi_*() functions that are provided by gcc. However, gnu-efi builds some freestanding code, so it doesn't link with libgcc, and therefore the build fails with: arm-buildroot-linux-gnueabi-ld: /output-1/build/gnu-efi-3.0.18//lib/print.c:1431:(.text+0x78c): undefined reference to `__aeabi_i2d' arm-buildroot-linux-gnueabi-ld: /output-1/build/gnu-efi-3.0.18//lib/print.c:1431:(.text+0x7a0): undefined reference to `__aeabi_dsub' arm-buildroot-linux-gnueabi-ld: /output-1/build/gnu-efi-3.0.18//lib/print.c:1431:(.text+0x7a4): undefined reference to `__aeabi_d2f' arm-buildroot-linux-gnueabi-ld: /output-1/build/gnu-efi-3.0.18//lib/print.c:1432:(.text+0x7b4): undefined reference to `__aeabi_fcmplt' arm-buildroot-linux-gnueabi-ld: /output-1/build/gnu-efi-3.0.18//lib/print.c:1438:(.text+0x7c8): undefined reference to `__aeabi_fmul' arm-buildroot-linux-gnueabi-ld: /output-1/build/gnu-efi-3.0.18//lib/print.c:1440:(.text+0x7d4): undefined reference to `__aeabi_fcmpeq' arm-buildroot-linux-gnueabi-ld: /output-1/build/gnu-efi-3.0.18//lib/print.c:1444:(.text+0x7f8): undefined reference to `__aeabi_fmul' arm-buildroot-linux-gnueabi-ld: /output-1/build/gnu-efi-3.0.18//lib/print.c:1440:(.text+0x808): undefined reference to `__aeabi_fcmpeq' arm-buildroot-linux-gnueabi-ld: /output-1/build/gnu-efi-3.0.18//lib/print.c:1440:(.text+0x818): undefined reference to `__aeabi_f2iz' arm-buildroot-linux-gnueabi-ld: /output-1/build/gnu-efi-3.0.18//lib/print.c:1451:(.text+0x834): undefined reference to `__aeabi_i2f' arm-buildroot-linux-gnueabi-ld: /output-1/build/gnu-efi-3.0.18//lib/print.c:1451:(.text+0x840): undefined reference to `__aeabi_fcmpeq' arm-buildroot-linux-gnueabi-ld: /output-1/build/gnu-efi-3.0.18//lib/print.c:1453:(.text+0x858): undefined reference to `__aeabi_fmul' arm-buildroot-linux-gnueabi-ld: /output-1/build/gnu-efi-3.0.18//lib/print.c:1451:(.text+0x860): undefined reference to `__aeabi_f2iz' arm-buildroot-linux-gnueabi-ld: /output-1/build/gnu-efi-3.0.18//lib/print.c:1451:(.text+0x868): undefined reference to `__aeabi_i2f' arm-buildroot-linux-gnueabi-ld: /output-1/build/gnu-efi-3.0.18//lib/print.c:1451:(.text+0x870): undefined reference to `__aeabi_fcmpeq' arm-buildroot-linux-gnueabi-ld: /output-1/build/gnu-efi-3.0.18//lib/print.c:1451:(.text+0x89c): undefined reference to `__aeabi_f2iz' Since we don't care about gnu-efi support on ARM soft-float configurations, let's disable such configurations. Note that we have chosen to use BR2_ARM_SOFT_FLOAT as we're for now making this specific to ARM as we're not sure what is the situation on other CPU architectures (for example RISC-V without FPU maybe). This can be revisited once we get more data on the behavior on other CPU architectures that can support soft-float. Fixes: http://autobuild.buildroot.net/results/98d955fd2fcf4a3db1ab46e4f553447031a23b92/ Signed-off-by: Thomas Petazzoni <thomas.petazzoni@bootlin.com> 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 OFTC IRC. If you would like to contribute patches, please read https://buildroot.org/manual.html#submitting-patches