via llvm-dev
2017-Nov-26 12:09 UTC
[llvm-dev] Compilation issue "unsupported relocation on symbol" with clang 3.7.1
Hi List, I'm trying to build llvm-5.0.0 with clang-3.7.1 on ARM (native building). At some point I have the following issue : ---- [1588/5024] Building C object projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-arm.dir/cpu_model.c.o ../projects/compiler-rt/lib/builtins/cpu_model.c:596:7: warning: ISO C requires a translation unit to contain at least one declaration [-Wempty-translation-unit] #endif ^ 1 warning generated. [1786/5024] Building C object projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/cpu_model.c.o ../projects/compiler-rt/lib/builtins/cpu_model.c:596:7: warning: ISO C requires a translation unit to contain at least one declaration [-Wempty-translation-unit] #endif ^ 1 warning generated. [1915/5024] Building ASM object projects/compiler-rt/lib/built...s/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o FAILED: projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o /usr/bin/clang -DLLVM_BUILD_GLOBAL_ISEL -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/builtins -I../projects/compiler-rt/lib/builtins -Iinclude -I../include -fPIC -O3 -DNDEBUG -march=armv6m -mfloat-abi=soft -fno-lto -MD -MT projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o -MF projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o.d -o projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o -c ../projects/compiler-rt/lib/builtins/arm/aeabi_memcmp.S clang -cc1as: fatal error: error in backend: unsupported relocation on symbol [1917/5024] Building ASM object projects/compiler-rt/lib/built.../CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o FAILED: projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o /usr/bin/clang -DLLVM_BUILD_GLOBAL_ISEL -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/builtins -I../projects/compiler-rt/lib/builtins -Iinclude -I../include -fPIC -O3 -DNDEBUG -march=armv6m -mfloat-abi=soft -fno-lto -MD -MT projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o -MF projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o.d -o projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins----armv6m.dir/arm/aeabi_memmove.S.o -c ../projects/compiler-rt/lib/builtins/arm/aeabi_memmove.S clang -cc1as: fatal error: error in backend: unsupported relocation on symbol [1918/5024] Building ASM object projects/compiler-rt/lib/built...s/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o FAILED: projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o /usr/bin/clang -DLLVM_BUILD_GLOBAL_ISEL -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/builtins -I../projects/compiler-rt/lib/builtins -Iinclude -I../include -fPIC -O3 -DNDEBUG -march=armv6m -mfloat-abi=soft -fno-lto -MD -MT projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o -MF projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o.d -o projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o -c ../projects/compiler-rt/lib/builtins/arm/aeabi_memcpy.S clang -cc1as: fatal error: error in backend: unsupported relocation on symbol [1920/5024] Building CXX object lib/Target/ARM/MCTargetDesc/CMakeFiles/LLVMARMDesc.dir/ARMMCTargetDesc.cpp.o ninja: build stopped: subcommand failed. ---- Relevant stuff: clang -cc1as: fatal error: error in backend: unsupported relocation on symbol Well, I don't know how to fix that. Any ideas ? Let me know if you need further info. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.llvm.org/pipermail/llvm-dev/attachments/20171126/30930422/attachment-0001.html>
Peter Smith via llvm-dev
2017-Nov-27 10:43 UTC
[llvm-dev] Compilation issue "unsupported relocation on symbol" with clang 3.7.1
My best guess is that this is PR30279 https://bugs.llvm.org/show_bug.cgi?id=30279 which was fixed in r280651 in September 2016. Can you try again with a version of clang/llvm from after that point? Some versions of aeabi_memcpy.S contain an unconditional branch to memcpy (a branch out of section that can't be resolved at assembly time). The v6m unconditional branch has a very short range and earlier versions of llvm did not support the relocation. Hope this helps Peter On 26 November 2017 at 12:09, via llvm-dev <llvm-dev at lists.llvm.org> wrote:> > Hi List, > > I'm trying to build llvm-5.0.0 with clang-3.7.1 on ARM (native building). At > some point I have the following issue : > > ---- > > [1588/5024] Building C object > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-arm.dir/cpu_model.c.o > ../projects/compiler-rt/lib/builtins/cpu_model.c:596:7: warning: ISO C > requires a translation unit to contain at least one declaration > [-Wempty-translation-unit] > #endif > ^ > 1 warning generated. > [1786/5024] Building C object > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/cpu_model.c.o > ../projects/compiler-rt/lib/builtins/cpu_model.c:596:7: warning: ISO C > requires a translation unit to contain at least one declaration > [-Wempty-translation-unit] > #endif > ^ > 1 warning generated. > [1915/5024] Building ASM object > projects/compiler-rt/lib/built...s/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o > FAILED: > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o > /usr/bin/clang -DLLVM_BUILD_GLOBAL_ISEL -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE > -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS > -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/builtins > -I../projects/compiler-rt/lib/builtins -Iinclude -I../include -fPIC -O3 > -DNDEBUG -march=armv6m -mfloat-abi=soft -fno-lto -MD -MT > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o > -MF > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o.d > -o > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o > -c ../projects/compiler-rt/lib/builtins/arm/aeabi_memcmp.S > clang -cc1as: fatal error: error in backend: unsupported relocation on > symbol > [1917/5024] Building ASM object > projects/compiler-rt/lib/built.../CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o > FAILED: > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o > /usr/bin/clang -DLLVM_BUILD_GLOBAL_ISEL -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE > -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS > -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/builtins > -I../projects/compiler-rt/lib/builtins -Iinclude -I../include -fPIC -O3 > -DNDEBUG -march=armv6m -mfloat-abi=soft -fno-lto -MD -MT > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o > -MF > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o.d > -o > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins----armv6m.dir/arm/aeabi_memmove.S.o > -c ../projects/compiler-rt/lib/builtins/arm/aeabi_memmove.S > clang -cc1as: fatal error: error in backend: unsupported relocation on > symbol > [1918/5024] Building ASM object > projects/compiler-rt/lib/built...s/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o > FAILED: > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o > /usr/bin/clang -DLLVM_BUILD_GLOBAL_ISEL -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE > -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS > -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/builtins > -I../projects/compiler-rt/lib/builtins -Iinclude -I../include -fPIC -O3 > -DNDEBUG -march=armv6m -mfloat-abi=soft -fno-lto -MD -MT > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o > -MF > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o.d > -o > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o > -c ../projects/compiler-rt/lib/builtins/arm/aeabi_memcpy.S > clang -cc1as: fatal error: error in backend: unsupported relocation on > symbol > [1920/5024] Building CXX object > lib/Target/ARM/MCTargetDesc/CMakeFiles/LLVMARMDesc.dir/ARMMCTargetDesc.cpp.o > ninja: build stopped: subcommand failed. > > ---- > > > Relevant stuff: > clang -cc1as: fatal error: error in backend: unsupported relocation on > symbol > > Well, I don't know how to fix that. Any ideas ? > > Let me know if you need further info. > > _______________________________________________ > LLVM Developers mailing list > llvm-dev at lists.llvm.org > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev >
via llvm-dev
2017-Nov-27 11:02 UTC
[llvm-dev] Compilation issue "unsupported relocation on symbol" with clang 3.7.1
November 27, 2017 2:43 PM, "Peter Smith" <peter.smith at linaro.org> wrote:> My best guess is that this is PR30279 > https://bugs.llvm.org/show_bug.cgi?id=30279 which was fixed in r280651 > in September 2016. Can you try again with a version of clang/llvm from > after that point? Some versions of aeabi_memcpy.S contain an > unconditional branch to memcpy (a branch out of section that can't be > resolved at assembly time). The v6m unconditional branch has a very > short range and earlier versions of llvm did not support the > relocation. > > Hope this helps >Hi Peter, Thank you for your answer. I saw that pages before but I didn't find any information about how to fix this. And unfortunately, I can't use a different version of clang/llvm. Thanks> On 26 November 2017 at 12:09, via llvm-dev <llvm-dev at lists.llvm.org> wrote: > >> Hi List, >> >> I'm trying to build llvm-5.0.0 with clang-3.7.1 on ARM (native building). At >> some point I have the following issue : >> >> ---- >> >> [1588/5024] Building C object >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-arm.dir/cpu_model.c.o >> ../projects/compiler-rt/lib/builtins/cpu_model.c:596:7: warning: ISO C >> requires a translation unit to contain at least one declaration >> [-Wempty-translation-unit] >> #endif >> ^ >> 1 warning generated. >> [1786/5024] Building C object >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/cpu_model.c.o >> ../projects/compiler-rt/lib/builtins/cpu_model.c:596:7: warning: ISO C >> requires a translation unit to contain at least one declaration >> [-Wempty-translation-unit] >> #endif >> ^ >> 1 warning generated. >> [1915/5024] Building ASM object >> projects/compiler-rt/lib/built...s/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o >> FAILED: >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o >> /usr/bin/clang -DLLVM_BUILD_GLOBAL_ISEL -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE >> -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS >> -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/builtins >> -I../projects/compiler-rt/lib/builtins -Iinclude -I../include -fPIC -O3 >> -DNDEBUG -march=armv6m -mfloat-abi=soft -fno-lto -MD -MT >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o >> -MF >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o.d >> -o >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o >> -c ../projects/compiler-rt/lib/builtins/arm/aeabi_memcmp.S >> clang -cc1as: fatal error: error in backend: unsupported relocation on >> symbol >> [1917/5024] Building ASM object >> projects/compiler-rt/lib/built.../CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o >> FAILED: >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o >> /usr/bin/clang -DLLVM_BUILD_GLOBAL_ISEL -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE >> -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS >> -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/builtins >> -I../projects/compiler-rt/lib/builtins -Iinclude -I../include -fPIC -O3 >> -DNDEBUG -march=armv6m -mfloat-abi=soft -fno-lto -MD -MT >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o >> -MF >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o.d >> -o >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins----armv6m.dir/arm/aeabi_memmove.S.o >> -c ../projects/compiler-rt/lib/builtins/arm/aeabi_memmove.S >> clang -cc1as: fatal error: error in backend: unsupported relocation on >> symbol >> [1918/5024] Building ASM object >> projects/compiler-rt/lib/built...s/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o >> FAILED: >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o >> /usr/bin/clang -DLLVM_BUILD_GLOBAL_ISEL -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE >> -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS >> -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/builtins >> -I../projects/compiler-rt/lib/builtins -Iinclude -I../include -fPIC -O3 >> -DNDEBUG -march=armv6m -mfloat-abi=soft -fno-lto -MD -MT >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o >> -MF >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o.d >> -o >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o >> -c ../projects/compiler-rt/lib/builtins/arm/aeabi_memcpy.S >> clang -cc1as: fatal error: error in backend: unsupported relocation on >> symbol >> [1920/5024] Building CXX object >> lib/Target/ARM/MCTargetDesc/CMakeFiles/LLVMARMDesc.dir/ARMMCTargetDesc.cpp.o >> ninja: build stopped: subcommand failed. >> >> ---- >> >> Relevant stuff: >> clang -cc1as: fatal error: error in backend: unsupported relocation on >> symbol >> >> Well, I don't know how to fix that. Any ideas ? >> >> Let me know if you need further info. >> >> _______________________________________________ >> LLVM Developers mailing list >> llvm-dev at lists.llvm.org >> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
Peter Smith via llvm-dev
2017-Nov-27 11:12 UTC
[llvm-dev] Compilation issue "unsupported relocation on symbol" with clang 3.7.1
A very recent change to compiler-rt https://reviews.llvm.org/D39700 recently the unconditional branch for v6-m in some of the aeabi_ functions, if you are able to use compiler-rt from trunk or alter the compiler-rt source yourself you may be able to work around the problem without changing versions of llvm. I'm not sure what to recommend otherwise, you may be able to turn off the integrated assembler and use arm-non-eabi-as for the files with unconditional branches, but I couldn't guarantee that would wouldn't result in other problems. Peter On 27 November 2017 at 11:02, <shiftag at nanotek.info> wrote:> November 27, 2017 2:43 PM, "Peter Smith" <peter.smith at linaro.org> wrote: > >> My best guess is that this is PR30279 >> https://bugs.llvm.org/show_bug.cgi?id=30279 which was fixed in r280651 >> in September 2016. Can you try again with a version of clang/llvm from >> after that point? Some versions of aeabi_memcpy.S contain an >> unconditional branch to memcpy (a branch out of section that can't be >> resolved at assembly time). The v6m unconditional branch has a very >> short range and earlier versions of llvm did not support the >> relocation. >> >> Hope this helps >> > > Hi Peter, > > Thank you for your answer. I saw that pages before but I didn't find any > information about how to fix this. And unfortunately, I can't use a different > version of clang/llvm. > > Thanks > >> On 26 November 2017 at 12:09, via llvm-dev <llvm-dev at lists.llvm.org> wrote: >> >>> Hi List, >>> >>> I'm trying to build llvm-5.0.0 with clang-3.7.1 on ARM (native building). At >>> some point I have the following issue : >>> >>> ---- >>> >>> [1588/5024] Building C object >>> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-arm.dir/cpu_model.c.o >>> ../projects/compiler-rt/lib/builtins/cpu_model.c:596:7: warning: ISO C >>> requires a translation unit to contain at least one declaration >>> [-Wempty-translation-unit] >>> #endif >>> ^ >>> 1 warning generated. >>> [1786/5024] Building C object >>> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/cpu_model.c.o >>> ../projects/compiler-rt/lib/builtins/cpu_model.c:596:7: warning: ISO C >>> requires a translation unit to contain at least one declaration >>> [-Wempty-translation-unit] >>> #endif >>> ^ >>> 1 warning generated. >>> [1915/5024] Building ASM object >>> projects/compiler-rt/lib/built...s/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o >>> FAILED: >>> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o >>> /usr/bin/clang -DLLVM_BUILD_GLOBAL_ISEL -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE >>> -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS >>> -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/builtins >>> -I../projects/compiler-rt/lib/builtins -Iinclude -I../include -fPIC -O3 >>> -DNDEBUG -march=armv6m -mfloat-abi=soft -fno-lto -MD -MT >>> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o >>> -MF >>> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o.d >>> -o >>> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o >>> -c ../projects/compiler-rt/lib/builtins/arm/aeabi_memcmp.S >>> clang -cc1as: fatal error: error in backend: unsupported relocation on >>> symbol >>> [1917/5024] Building ASM object >>> projects/compiler-rt/lib/built.../CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o >>> FAILED: >>> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o >>> /usr/bin/clang -DLLVM_BUILD_GLOBAL_ISEL -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE >>> -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS >>> -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/builtins >>> -I../projects/compiler-rt/lib/builtins -Iinclude -I../include -fPIC -O3 >>> -DNDEBUG -march=armv6m -mfloat-abi=soft -fno-lto -MD -MT >>> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o >>> -MF >>> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o.d >>> -o >>> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins----armv6m.dir/arm/aeabi_memmove.S.o >>> -c ../projects/compiler-rt/lib/builtins/arm/aeabi_memmove.S >>> clang -cc1as: fatal error: error in backend: unsupported relocation on >>> symbol >>> [1918/5024] Building ASM object >>> projects/compiler-rt/lib/built...s/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o >>> FAILED: >>> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o >>> /usr/bin/clang -DLLVM_BUILD_GLOBAL_ISEL -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE >>> -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS >>> -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/builtins >>> -I../projects/compiler-rt/lib/builtins -Iinclude -I../include -fPIC -O3 >>> -DNDEBUG -march=armv6m -mfloat-abi=soft -fno-lto -MD -MT >>> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o >>> -MF >>> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o.d >>> -o >>> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o >>> -c ../projects/compiler-rt/lib/builtins/arm/aeabi_memcpy.S >>> clang -cc1as: fatal error: error in backend: unsupported relocation on >>> symbol >>> [1920/5024] Building CXX object >>> lib/Target/ARM/MCTargetDesc/CMakeFiles/LLVMARMDesc.dir/ARMMCTargetDesc.cpp.o >>> ninja: build stopped: subcommand failed. >>> >>> ---- >>> >>> Relevant stuff: >>> clang -cc1as: fatal error: error in backend: unsupported relocation on >>> symbol >>> >>> Well, I don't know how to fix that. Any ideas ? >>> >>> Let me know if you need further info. >>> >>> _______________________________________________ >>> LLVM Developers mailing list >>> llvm-dev at lists.llvm.org >>> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
via llvm-dev
2017-Nov-27 11:34 UTC
[llvm-dev] Compilation issue "unsupported relocation on symbol" with clang 3.7.1
Thank you Peter, I will try to patch instead. Cheers November 27, 2017 3:12 PM, "Peter Smith" <peter.smith at linaro.org> wrote:> A very recent change to compiler-rt https://reviews.llvm.org/D39700 > recently the unconditional branch for v6-m in some of the aeabi_ > functions, if you are able to use compiler-rt from trunk or alter the > compiler-rt source yourself you may be able to work around the problem > without changing versions of llvm. > > I'm not sure what to recommend otherwise, you may be able to turn off > the integrated assembler and use arm-non-eabi-as for the files with > unconditional branches, but I couldn't guarantee that would wouldn't > result in other problems. > > Peter > > On 27 November 2017 at 11:02, <shiftag at nanotek.info> wrote: > >> November 27, 2017 2:43 PM, "Peter Smith" <peter.smith at linaro.org> wrote: >> >>> My best guess is that this is PR30279 >>> https://bugs.llvm.org/show_bug.cgi?id=30279 which was fixed in r280651 >>> in September 2016. Can you try again with a version of clang/llvm from >>> after that point? Some versions of aeabi_memcpy.S contain an >>> unconditional branch to memcpy (a branch out of section that can't be >>> resolved at assembly time). The v6m unconditional branch has a very >>> short range and earlier versions of llvm did not support the >>> relocation. >>> >>> Hope this helps >> >> Hi Peter, >> >> Thank you for your answer. I saw that pages before but I didn't find any >> information about how to fix this. And unfortunately, I can't use a different >> version of clang/llvm. >> >> Thanks >> >>> On 26 November 2017 at 12:09, via llvm-dev <llvm-dev at lists.llvm.org> wrote: >> >> Hi List, >> >> I'm trying to build llvm-5.0.0 with clang-3.7.1 on ARM (native building). At >> some point I have the following issue : >> >> ---- >> >> [1588/5024] Building C object >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-arm.dir/cpu_model.c.o >> ../projects/compiler-rt/lib/builtins/cpu_model.c:596:7: warning: ISO C >> requires a translation unit to contain at least one declaration >> [-Wempty-translation-unit] >> #endif >> ^ >> 1 warning generated. >> [1786/5024] Building C object >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/cpu_model.c.o >> ../projects/compiler-rt/lib/builtins/cpu_model.c:596:7: warning: ISO C >> requires a translation unit to contain at least one declaration >> [-Wempty-translation-unit] >> #endif >> ^ >> 1 warning generated. >> [1915/5024] Building ASM object >> projects/compiler-rt/lib/built...s/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o >> FAILED: >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o >> /usr/bin/clang -DLLVM_BUILD_GLOBAL_ISEL -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE >> -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS >> -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/builtins >> -I../projects/compiler-rt/lib/builtins -Iinclude -I../include -fPIC -O3 >> -DNDEBUG -march=armv6m -mfloat-abi=soft -fno-lto -MD -MT >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o >> -MF >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o.d >> -o >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o >> -c ../projects/compiler-rt/lib/builtins/arm/aeabi_memcmp.S >> clang -cc1as: fatal error: error in backend: unsupported relocation on >> symbol >> [1917/5024] Building ASM object >> projects/compiler-rt/lib/built.../CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o >> FAILED: >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o >> /usr/bin/clang -DLLVM_BUILD_GLOBAL_ISEL -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE >> -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS >> -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/builtins >> -I../projects/compiler-rt/lib/builtins -Iinclude -I../include -fPIC -O3 >> -DNDEBUG -march=armv6m -mfloat-abi=soft -fno-lto -MD -MT >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o >> -MF >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o.d >> -o >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins----armv6m.dir/arm/aeabi_memmove.S.o >> -c ../projects/compiler-rt/lib/builtins/arm/aeabi_memmove.S >> clang -cc1as: fatal error: error in backend: unsupported relocation on >> symbol >> [1918/5024] Building ASM object >> projects/compiler-rt/lib/built...s/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o >> FAILED: >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o >> /usr/bin/clang -DLLVM_BUILD_GLOBAL_ISEL -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE >> -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS >> -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/builtins >> -I../projects/compiler-rt/lib/builtins -Iinclude -I../include -fPIC -O3 >> -DNDEBUG -march=armv6m -mfloat-abi=soft -fno-lto -MD -MT >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o >> -MF >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o.d >> -o >> projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o >> -c ../projects/compiler-rt/lib/builtins/arm/aeabi_memcpy.S >> clang -cc1as: fatal error: error in backend: unsupported relocation on >> symbol >> [1920/5024] Building CXX object >> lib/Target/ARM/MCTargetDesc/CMakeFiles/LLVMARMDesc.dir/ARMMCTargetDesc.cpp.o >> ninja: build stopped: subcommand failed. >> >> ---- >> >> Relevant stuff: >> clang -cc1as: fatal error: error in backend: unsupported relocation on >> symbol >> >> Well, I don't know how to fix that. Any ideas ? >> >> Let me know if you need further info. >> >> _______________________________________________ >> LLVM Developers mailing list >> llvm-dev at lists.llvm.org >> http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev
via llvm-dev
2017-Nov-28 08:04 UTC
[llvm-dev] Compilation issue "unsupported relocation on symbol" with clang 3.7.1
Hi again, So I applied the patch but I have still the same issue. --- -- Build files have been written to: /tmp/aki/llvm-5.0.0.src/build [1465/5024] Creating library symlink lib/libc++.so.1 lib/libc++.so GENERATING SCRIPT: 'INPUT(libc++.so.1 -lc++abi)' as file /tmp/aki/llvm-5.0.0.src/build/lib/libc++.so [1588/5024] Building C object projects/compiler-rt/lib...ins/CMakeFiles/clang_rt.builtins-arm.dir/cpu_model.c.o ../projects/compiler-rt/lib/builtins/cpu_model.c:596:7: warning: ISO C requires a translation unit to contain at least one declaration [-Wempty-translation-unit] #endif ^ 1 warning generated. [1786/5024] Building C object projects/compiler-rt/lib.../CMakeFiles/clang_rt.builtins-armv6m.dir/cpu_model.c.o ../projects/compiler-rt/lib/builtins/cpu_model.c:596:7: warning: ISO C requires a translation unit to contain at least one declaration [-Wempty-translation-unit] #endif ^ 1 warning generated. [1915/5024] Building ASM object projects/compiler-rt/l...iles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o FAILED: projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o /usr/bin/clang -DLLVM_BUILD_GLOBAL_ISEL -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/builtins -I../projects/compiler-rt/lib/builtins -Iinclude -I../include -fPIC -O3 -DNDEBUG -march=armv6m -mfloat-abi=soft -fno-lto -MD -MT projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o -MF projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o.d -o projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o -c ../projects/compiler-rt/lib/builtins/arm/aeabi_memcmp.S clang -cc1as: fatal error: error in backend: unsupported relocation on symbol [1917/5024] Building ASM object projects/compiler-rt/l...iles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o FAILED: projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o /usr/bin/clang -DLLVM_BUILD_GLOBAL_ISEL -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/builtins -I../projects/compiler-rt/lib/builtins -Iinclude -I../include -fPIC -O3 -DNDEBUG -march=armv6m -mfloat-abi=soft -fno-lto -MD -MT projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o -MF projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o.d -o projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o -c ../projects/compiler-rt/lib/builtins/arm/aeabi_memcpy.S clang -cc1as: fatal error: error in backend: unsupported relocation on symbol [1918/5024] Building ASM object projects/compiler-rt/l...les/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o FAILED: projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o /usr/bin/clang -DLLVM_BUILD_GLOBAL_ISEL -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/builtins -I../projects/compiler-rt/lib/builtins -Iinclude -I../include -fPIC -O3 -DNDEBUG -march=armv6m -mfloat-abi=soft -fno-lto -MD -MT projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o -MF projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o.d -o projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o -c ../projects/compiler-rt/lib/builtins/arm/aeabi_memmove.S clang -cc1as: fatal error: error in backend: unsupported relocation on symbol [1920/5024] Building CXX object lib/Target/ARM/MCTargetDesc/CMakeFiles/LLVMARMDesc.dir/ARMMCTargetDesc.cpp.o ninja: build stopped: subcommand failed --- So if we check the content of the following file : projects/compiler-rt/lib/builtins/arm/aeabi_memcmp.S --- //===-- aeabi_memcmp.S - EABI memcmp implementation -----------------------===// // // The LLVM Compiler Infrastructure // // This file is dual licensed under the MIT and the University of Illinois Open // Source Licenses. See LICENSE.TXT for details. // //===----------------------------------------------------------------------===// #include "../assembly.h" // void __aeabi_memcmp(void *dest, void *src, size_t n) { memcmp(dest, src, n); } .syntax unified .p2align 2 DEFINE_COMPILERRT_FUNCTION(__aeabi_memcmp) #ifdef USE_THUMB_1 push {r7, lr} bl memcmp pop {r7, pc} #else b memcmp #endif END_COMPILERRT_FUNCTION(__aeabi_memcmp) DEFINE_AEABI_FUNCTION_ALIAS(__aeabi_memcmp4, __aeabi_memcmp) DEFINE_AEABI_FUNCTION_ALIAS(__aeabi_memcmp8, __aeabi_memcmp) NO_EXEC_STACK_DIRECTIVE --- The file has been correctly patch but do I need to provide a switch to the pre-processor for USE_THUMB_1 like "-DUSE_THUMB_1" ? Cheers November 27, 2017 3:36 PM, "via llvm-dev" <llvm-dev at lists.llvm.org> wrote:> Thank you Peter, I will try to patch instead. > > Cheers > > November 27, 2017 3:12 PM, "Peter Smith" <peter.smith at linaro.org> wrote: > >> A very recent change to compiler-rt https://reviews.llvm.org/D39700 >> recently the unconditional branch for v6-m in some of the aeabi_ >> functions, if you are able to use compiler-rt from trunk or alter the >> compiler-rt source yourself you may be able to work around the problem >> without changing versions of llvm. >> >> I'm not sure what to recommend otherwise, you may be able to turn off >> the integrated assembler and use arm-non-eabi-as for the files with >> unconditional branches, but I couldn't guarantee that would wouldn't >> result in other problems. >> >> Peter >> >> On 27 November 2017 at 11:02, <shiftag at nanotek.info> wrote: > > November 27, 2017 2:43 PM, "Peter Smith" <peter.smith at linaro.org> wrote: >> My best guess is that this is PR30279 >> https://bugs.llvm.org/show_bug.cgi?id=30279 which was fixed in r280651 >> in September 2016. Can you try again with a version of clang/llvm from >> after that point? Some versions of aeabi_memcpy.S contain an >> unconditional branch to memcpy (a branch out of section that can't be >> resolved at assembly time). The v6m unconditional branch has a very >> short range and earlier versions of llvm did not support the >> relocation. >> >> Hope this helps > > Hi Peter, > > Thank you for your answer. I saw that pages before but I didn't find any > information about how to fix this. And unfortunately, I can't use a different > version of clang/llvm. > > Thanks >> On 26 November 2017 at 12:09, via llvm-dev <llvm-dev at lists.llvm.org> wrote: > > Hi List, > > I'm trying to build llvm-5.0.0 with clang-3.7.1 on ARM (native building). At > some point I have the following issue : > > ---- > > [1588/5024] Building C object > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-arm.dir/cpu_model.c.o > ../projects/compiler-rt/lib/builtins/cpu_model.c:596:7: warning: ISO C > requires a translation unit to contain at least one declaration > [-Wempty-translation-unit] > #endif > ^ > 1 warning generated. > [1786/5024] Building C object > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/cpu_model.c.o > ../projects/compiler-rt/lib/builtins/cpu_model.c:596:7: warning: ISO C > requires a translation unit to contain at least one declaration > [-Wempty-translation-unit] > #endif > ^ > 1 warning generated. > [1915/5024] Building ASM object > projects/compiler-rt/lib/built...s/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o > FAILED: > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o > /usr/bin/clang -DLLVM_BUILD_GLOBAL_ISEL -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE > -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS > -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/builtins > -I../projects/compiler-rt/lib/builtins -Iinclude -I../include -fPIC -O3 > -DNDEBUG -march=armv6m -mfloat-abi=soft -fno-lto -MD -MT > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o > -MF > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o.d > -o > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcmp.S.o > -c ../projects/compiler-rt/lib/builtins/arm/aeabi_memcmp.S > clang -cc1as: fatal error: error in backend: unsupported relocation on > symbol > [1917/5024] Building ASM object > projects/compiler-rt/lib/built.../CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o > FAILED: > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o > /usr/bin/clang -DLLVM_BUILD_GLOBAL_ISEL -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE > -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS > -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/builtins > -I../projects/compiler-rt/lib/builtins -Iinclude -I../include -fPIC -O3 > -DNDEBUG -march=armv6m -mfloat-abi=soft -fno-lto -MD -MT > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o > -MF > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memmove.S.o.d > -o > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins----armv6m.dir/arm/aeabi_memmove.S.o > -c ../projects/compiler-rt/lib/builtins/arm/aeabi_memmove.S > clang -cc1as: fatal error: error in backend: unsupported relocation on > symbol > [1918/5024] Building ASM object > projects/compiler-rt/lib/built...s/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o > FAILED: > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o > /usr/bin/clang -DLLVM_BUILD_GLOBAL_ISEL -D_FILE_OFFSET_BITS=64 -D_GNU_SOURCE > -D_LARGEFILE_SOURCE -D__STDC_CONSTANT_MACROS -D__STDC_FORMAT_MACROS > -D__STDC_LIMIT_MACROS -Iprojects/compiler-rt/lib/builtins > -I../projects/compiler-rt/lib/builtins -Iinclude -I../include -fPIC -O3 > -DNDEBUG -march=armv6m -mfloat-abi=soft -fno-lto -MD -MT > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o > -MF > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o.d > -o > projects/compiler-rt/lib/builtins/CMakeFiles/clang_rt.builtins-armv6m.dir/arm/aeabi_memcpy.S.o > -c ../projects/compiler-rt/lib/builtins/arm/aeabi_memcpy.S > clang -cc1as: fatal error: error in backend: unsupported relocation on > symbol > [1920/5024] Building CXX object > lib/Target/ARM/MCTargetDesc/CMakeFiles/LLVMARMDesc.dir/ARMMCTargetDesc.cpp.o > ninja: build stopped: subcommand failed. > > ---- > > Relevant stuff: > clang -cc1as: fatal error: error in backend: unsupported relocation on > symbol > > Well, I don't know how to fix that. Any ideas ? > > Let me know if you need further info. > > _______________________________________________ > LLVM Developers mailing list > llvm-dev at lists.llvm.org > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev > > _______________________________________________ > LLVM Developers mailing list > llvm-dev at lists.llvm.org > http://lists.llvm.org/cgi-bin/mailman/listinfo/llvm-dev