cross no longer works, manual script fails on linking

[ericlewis]

Hello! Awesome project, I am attempting to try a compile here, using the toolchain & it dies at the part where it tries to link with __Vector. Any advice?

swiftc -Xcc -ffunction-sections -Xcc -fdata-sections -Xcc -mthumb -Xlinker --gc-sections -Xfrontend -metadata-sections -Xfrontend -function-sections -Xfrontend -data-sections -static-stdlib -target thumbv7m-unknown-none-eabi -use-ld=/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld -Xcc -D_BAREMETAL -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/arm-none-eabi/8.2.1/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/lib/arm-none-eabi/8.2.1/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/lib/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/usr/lib/arm-none-eabi/8.2.1/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/usr/lib/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/arm-none-eabi/8.2.1/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/lib/arm-none-eabi/8.2.1/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/lib/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/usr/lib/arm-none-eabi/8.2.1/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/usr/lib/ -lswiftCore -lswiftStdlibStubsBaremetal -lstdc++_nano -lc -lg -lm -lgcc -Xlinker -T -Xlinker ./linker.ld test.swift
/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld:./linker.ld:54: undefined symbol `__Vectors' referenced in expression
clang: error: ld.lld command failed with exit code 1 (use -v to see invocation)

[ericlewis]

getting a bit further, seems unicode is a problem?

ericlewis@erics-mbp swift-bm % swiftc -Xcc -ffunction-sections -Xcc -fdata-sections -Xcc -mthumb -Xlinker --gc-sections -Xfrontend -metadata-sections -Xfrontend -function-sections -Xfrontend -data-sections -static-stdlib -target thumbv7m-unknown-none-eabi -use-ld=/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld -Xcc -D_BAREMETAL -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/arm-none-eabi/8.2.1/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/lib/arm-none-eabi/8.2.1/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/lib/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/usr/lib/arm-none-eabi/8.2.1/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/usr/lib/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/arm-none-eabi/8.2.1/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/lib/arm-none-eabi/8.2.1/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/lib/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/usr/lib/arm-none-eabi/8.2.1/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/usr/lib/ -lswiftCore -lswiftStdlibStubsBaremetal -lstdc++_nano -lc -lg -lm -lgcc -Xlinker -T -Xlinker ./linker.ld test.swift
/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld: /Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/lib/swift_static/baremetal/thumbv7m/libswiftCore.a(UnicodeNormalization.cpp.o): in function `__swift_stdlib_ubrk_close':
UnicodeNormalization.cpp:(.text.__swift_stdlib_ubrk_close+0x0): undefined reference to `ubrk_close'
/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld: /Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/lib/swift_static/baremetal/thumbv7m/libswiftCore.a(UnicodeNormalization.cpp.o): in function `__swift_stdlib_ubrk_open':
UnicodeNormalization.cpp:(.text.__swift_stdlib_ubrk_open+0x0): undefined reference to `ubrk_open'
/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld: /Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/lib/swift_static/baremetal/thumbv7m/libswiftCore.a(UnicodeNormalization.cpp.o): in function `__swift_stdlib_ubrk_preceding':
UnicodeNormalization.cpp:(.text.__swift_stdlib_ubrk_preceding+0x0): undefined reference to `ubrk_preceding'
/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld: /Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/lib/swift_static/baremetal/thumbv7m/libswiftCore.a(UnicodeNormalization.cpp.o): in function `__swift_stdlib_ubrk_following':
UnicodeNormalization.cpp:(.text.__swift_stdlib_ubrk_following+0x0): undefined reference to `ubrk_following'
/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld: /Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/lib/swift_static/baremetal/thumbv7m/libswiftCore.a(UnicodeNormalization.cpp.o): in function `__swift_stdlib_ubrk_setUText':
UnicodeNormalization.cpp:(.text.__swift_stdlib_ubrk_setUText+0x0): undefined reference to `ubrk_setUText'
/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld: /Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/lib/swift_static/baremetal/thumbv7m/libswiftCore.a(UnicodeNormalization.cpp.o): in function `__swift_stdlib_utext_openUTF8':
UnicodeNormalization.cpp:(.text.__swift_stdlib_utext_openUTF8+0x0): undefined reference to `utext_openUTF8'
/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld: /Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/lib/swift_static/baremetal/thumbv7m/libswiftCore.a(UnicodeNormalization.cpp.o): in function `__swift_stdlib_unorm2_hasBoundaryBefore':
UnicodeNormalization.cpp:(.text.__swift_stdlib_unorm2_hasBoundaryBefore+0x0): undefined reference to `unorm2_hasBoundaryBefore'
/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld: /Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/lib/swift_static/baremetal/thumbv7m/libswiftCore.a(UnicodeNormalization.cpp.o): in function `__swift_stdlib_unorm2_getNFCInstance':
UnicodeNormalization.cpp:(.text.__swift_stdlib_unorm2_getNFCInstance+0x0): undefined reference to `unorm2_getNFCInstance'
/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld: /Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/lib/swift_static/baremetal/thumbv7m/libswiftCore.a(UnicodeNormalization.cpp.o): in function `__swift_stdlib_unorm2_normalize':
UnicodeNormalization.cpp:(.text.__swift_stdlib_unorm2_normalize+0x0): undefined reference to `unorm2_normalize'
/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld: /Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/lib/swift_static/baremetal/thumbv7m/libswiftCore.a(UnicodeNormalization.cpp.o): in function `__swift_stdlib_u_getIntPropertyValue':
UnicodeNormalization.cpp:(.text.__swift_stdlib_u_getIntPropertyValue+0x0): undefined reference to `u_getIntPropertyValue'
/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld: /Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/lib/swift_static/baremetal/thumbv7m/libswiftCore.a(UnicodeNormalization.cpp.o): in function `__swift_stdlib_u_strToLower':
UnicodeNormalization.cpp:(.text.__swift_stdlib_u_strToLower+0x0): undefined reference to `u_strToLower'
/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld: /Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/lib/swift_static/baremetal/thumbv7m/libswiftCore.a(UnicodeNormalization.cpp.o): in function `__swift_stdlib_u_strToUpper':
UnicodeNormalization.cpp:(.text.__swift_stdlib_u_strToUpper+0x0): undefined reference to `u_strToUpper'
/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld: /Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/thumb/v7e-m/nofp//libnosys.a(sbrk.o): in function `_sbrk':
sbrk.c:(.text._sbrk+0x18): undefined reference to `end'
clang: error: ld.lld command failed with exit code 1 (use -v to see invocation)
<unknown>:0: error: link command failed with exit code 1 (use -v to see invocation)

[ericlewis]

ah, it appears I am missing this: https://github.com/swift-embedded/unicode-support, unsure how to do this in a manual fashion sadly.

[ericlewis]

This was indeed the problem. I managed to get a compile working by compiling the unicode-support separately then using this command:

swiftc -Xcc -ffunction-sections -Xcc -fdata-sections -Xcc -mthumb -Xlinker --gc-sections -Xfrontend -metadata-sections -Xfrontend -function-sections -Xfrontend -data-sections -static-stdlib -target thumbv7m-unknown-none-eabi -use-ld=/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/bin/ld -Xcc -D_BAREMETAL -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/arm-none-eabi/8.2.1/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/lib/arm-none-eabi/8.2.1/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/lib/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/usr/lib/arm-none-eabi/8.2.1/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/usr/lib/thumb/v7e-m/nofp/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/arm-none-eabi/8.2.1/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../lib/gcc/arm-none-eabi/8.2.1/../../../../arm-none-eabi/lib/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/lib/arm-none-eabi/8.2.1/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/lib/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/usr/lib/arm-none-eabi/8.2.1/ -L/Users/ericlewis/Library/Developer/Toolchains/swift-LOCAL-2020-02-15-a.xctoolchain/usr/bin/../arm-none-eabi/usr/lib/ -lswiftCore -lswiftStdlibStubsBaremetal -lstdc++_nano -lc -lg -lm -lgcc -Xlinker -T -Xlinker ./linker.ld imp.o unicode.o test.swift