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Hi, I'm trying to build a toolchain that supports cross compilation for the Raspberry Pi Zero W. This requires building for ARMv6 (same as for the old Raspberry Pi 1). The official repository contains a crosstool-ng config file here: https://github.com/raspberrypi/tools/blob/master/configs/arm-rpi-4.9.3-linux-gnueabihf.config Unfortunately, only Linux binaries are provided in the repo. So for macOS I need to start from this config. The changes I did to the config file so far are: Undefine CT_CONFIGURE_has_xz Set CT_LOCAL_TARBALLS_DIR / CT_WORK_DIR / CT_PREFIX_DIR to reside on case-sensitive file systems CT_EXTRA_CFLAGS_FOR_HOST="-fbracket-depth=512" This fixes "[ERROR] /tmp/ct-ng/fs/.build/src/gcc-4.9.3/gcc/config/arm/neon.md:3486:10917: fatal error: bracket nesting level exceeded maximum of 256". CT_WANTS_STATIC_LINK=n CT_CC_GCC_STATIC_LIBSTDCXX=n These two fix errors during initial sanity checking. I'm currently stuck at the step "Installing C library headers & start files" where I get these errors during assembly of ../ports/sysdeps/unix/sysv/linux/arm/libc-aeabi_read_tp.S: ccL1wvil.s: Assembler messages: ccL1wvil.s:70: Error: invalid constant (ae) after fixup ccL1wvil.s:143: Error: invalid constant (ff) after fixup I tried with -mthumb (which leads to "conftest.c:14:1: sorry, unimplemented: Thumb-1 hard-float VFP ABI") and with -nostartfiles (which lets assembly work for this file but doesn't work on the next one (../ports/sysdeps/unix/sysv/linux/arm/libc-do-syscall.S) The complete build logs can be found here: https://scriptreactor.com/rpi1-fixup-error.build.log https://scriptreactor.com/rpi1-fixup-error-nostartfiles.build.log (with -nostartfiles) Any idea on what could be tried next? Xcode version: 8.2.1 (8C1002) maxOS version: 10.12.3 (16D32) crosstool-ng installed via "brew install crosstool-ng --with-grep" Thanks for any input! Etan
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