[-- Attachment #1: Type: text/plain, Size: 1476 bytes --] Hello, I am trying to use Clang cross compiler to build musl libc 1.2.2, as following: ./configure CC=clang --target=aarch64 make but it report the below error: clang -std=c99 -nostdinc -ffreestanding -frounding-math -Wa,--noexecstack -D_XOPEN_SOURCE=700 -I./arch/aarch64 -I./arch/generic -Iobj/src/internal -I./src/include -I./src/internal -Iobj/include -I./include -Os -pipe -fomit-frame-pointer -fno-unwind-tables -fno-asynchronous-unwind-tables -ffunction-sections -fdata-sections -w -Wno-pointer-to-int-cast -Werror=implicit-function-declaration -Werror=implicit-int -Werror=pointer-sign -Werror=pointer-arith -Werror=int-conversion -Werror=incompatible-pointer-types -Qunused-arguments -Waddress -Warray-bounds -Wchar-subscripts -Wduplicate-decl-specifier -Winit-self -Wreturn-type -Wsequence-point -Wstrict-aliasing -Wunused-function -Wunused-label -Wunused-variable -fPIC -fno-stack-protector -DCRT -c -o obj/crt/Scrt1.o crt/Scrt1.c <inline asm>:5:11: error: unknown token in expression mov x29, #0 ^ <inline asm>:6:11: error: unknown token in expression mov x30, #0 ^ <inline asm>:7:2: error: unknown use of instruction mnemonic without a size suffix mov x0, sp ^ <inline asm>:10:2: error: invalid instruction mnemonic 'adrp' adrp x1, _DYNAMIC Note: It's OK when I don't specify the --target to aarch64 ./configure CC=clang make Thanks, Simon [-- Attachment #2: Type: text/html, Size: 4851 bytes --]
On Sun, Oct 24, 2021 at 03:34:56AM +0000, Zhu Chunlin wrote:
> ./configure CC=clang --target=aarch64
I believe you want ./configure CC="clang --target=aarch64". You only
specified the target for the configure script but not to clang itself.
That's why the --target is absent from the command line that make
generated. And so it fails the first time it sees an actual assembly
file.
Ciao,
Markus
[-- Attachment #1.1: Type: text/plain, Size: 1146 bytes --] Hello Markus, Thanks! AR=/usr/local/bin/llvm-ar \ RANLIB=/usr/local/bin/llvm-ranlib \ CC=/usr/local/bin/clang \ CFLAGS="-fuse-ld=/usr/local/bin/ld.lld --rtlib=compiler-rt --target=aarch64" \ LIBCC=-lcompiler_rt \ ./configure --target=aarch64 \ && make But when I use the above config, it reports the below error, but I don't understand why there are gcc error, I have explict specify to use clang and ld.lld [cid:316ac50e-0bf9-49dc-a4d3-0c469e9d2248] Best Regards, Simon ________________________________ 发件人: Markus Wichmann <nullplan@gmx.net> 发送时间: 2021年10月24日 22:22 收件人: musl@lists.openwall.com <musl@lists.openwall.com> 主题: Re: [musl] Failed to build musl 1.2.2 by using clang cross compiler On Sun, Oct 24, 2021 at 03:34:56AM +0000, Zhu Chunlin wrote: > ./configure CC=clang --target=aarch64 I believe you want ./configure CC="clang --target=aarch64". You only specified the target for the configure script but not to clang itself. That's why the --target is absent from the command line that make generated. And so it fails the first time it sees an actual assembly file. Ciao, Markus [-- Attachment #1.2: Type: text/html, Size: 3148 bytes --] [-- Attachment #2: image.png --] [-- Type: image/png, Size: 44398 bytes --]
[-- Attachment #1.1: Type: text/plain, Size: 810 bytes --] On Mon, Oct 25, 2021 at 1:04 AM Zhu Chunlin <simon_0214@hotmail.com> wrote: > Hello Markus, > > Thanks! > > AR=/usr/local/bin/llvm-ar \ > RANLIB=/usr/local/bin/llvm-ranlib \ > CC=/usr/local/bin/clang \ > CFLAGS="-fuse-ld=/usr/local/bin/ld.lld --rtlib=compiler-rt > --target=aarch64" \ > LIBCC=-lcompiler_rt \ > ./configure --target=aarch64 \ > && make > > But when I use the above config, it reports the below error, but I don't > understand why there are gcc error, I have explict specify to use clang and > ld.lld > > -fuse-ld=/usr/local/bin/ld.lld is a LDFLAG. Since you are using GCC to drive link, set: LDFLAGS = "-Wl,-fuse-ld=/usr/local/bin/ld.lld " --rtlib=compiler-rt and --target=aarch64may need to go into LDFLAGS, too. --noexecstack is a ASFLAG. Use: ASFLAGS = "-Wa,--noexecstack" Jeff [-- Attachment #1.2: Type: text/html, Size: 2254 bytes --] [-- Attachment #2: image.png --] [-- Type: image/png, Size: 44398 bytes --]
[-- Attachment #1.1: Type: text/plain, Size: 1841 bytes --] Hello Jeff, Thanks! But when I update the config as you suggest: AR=/usr/local/bin/llvm-ar \ RANLIB=/usr/local/bin/llvm-ranlib \ CC=/usr/local/bin/clang \ CFLAGS="--rtlib=compiler-rt --target=aarch64" \ ASFLAGS="-Wa,--noexecstack" \ LDFLAGS="-Wl,-fuse-ld=/usr/local/bin/ld.lld --rtlib=compiler-rt --target=aarch64" \ LIBCC=-lcompiler_rt \ ./configure --target=aarch64 \ && make It still reports the error as below: [cid:919d9698-56e2-49d2-85c5-8b12ac33e65f] Another question, if I want to use LLVM tool chain instead of GCC, how should I config? Acutally I don't understand why there is gcc error, because I have specify to use clang and ld.lld. Thanks, Simon ________________________________ 发件人: Jeffrey Walton <noloader@gmail.com> 发送时间: 2021年10月25日 16:44 收件人: musl@lists.openwall.com <musl@lists.openwall.com> 抄送: nullplan@gmx.net <nullplan@gmx.net> 主题: Re: [musl] Failed to build musl 1.2.2 by using clang cross compiler On Mon, Oct 25, 2021 at 1:04 AM Zhu Chunlin <simon_0214@hotmail.com<mailto:simon_0214@hotmail.com>> wrote: Hello Markus, Thanks! AR=/usr/local/bin/llvm-ar \ RANLIB=/usr/local/bin/llvm-ranlib \ CC=/usr/local/bin/clang \ CFLAGS="-fuse-ld=/usr/local/bin/ld.lld --rtlib=compiler-rt --target=aarch64" \ LIBCC=-lcompiler_rt \ ./configure --target=aarch64 \ && make But when I use the above config, it reports the below error, but I don't understand why there are gcc error, I have explict specify to use clang and ld.lld [cid:17cb69be492cb971f161] -fuse-ld=/usr/local/bin/ld.lld is a LDFLAG. Since you are using GCC to drive link, set: LDFLAGS = "-Wl,-fuse-ld=/usr/local/bin/ld.lld " --rtlib=compiler-rt and --target=aarch64may need to go into LDFLAGS, too. --noexecstack is a ASFLAG. Use: ASFLAGS = "-Wa,--noexecstack" Jeff [-- Attachment #1.2: Type: text/html, Size: 5461 bytes --] [-- Attachment #2: image.png --] [-- Type: image/png, Size: 44398 bytes --] [-- Attachment #3: image.png --] [-- Type: image/png, Size: 15169 bytes --]
[-- Attachment #1.1: Type: text/plain, Size: 3180 bytes --] Hello, On my computer I have built and install the llvm toolchain from the source code by using the below configuration, the llvm lib is installed in the /usr/local/lib folder. cmake -S llvm -B build -G "Unix Makefiles" -DLLVM_ENABLE_PROJECTS="clang;clang-tools-extra;libcxx;libcxxabi;compiler-rt;lld" -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD="ARM;X86;AArch64" And I am trying to build musl libc 1.2.2 for aarch64 by using llvm/clang, and I use the below configure: ./configure CC=clang --target=aarch64 CFLAGS="-v --target=aarch64 --rtlib=compiler-rt" AR=/usr/local/bin/llvm-ar RANLIB=/usr/local/bin/llvm-ranlib LIBCC=-lcompiler_rt --syslibdir=/usr/local/lib It report the error as below: [cid:ef74a00d-14e8-4a0a-b304-d1d3f4cb73f7] And I find the compile phase is OK, the problem occurs during the link phase, I don't understand why finally gcc is invoked. [cid:904980bd-5393-439f-b7a6-6735617f6c5b] By the way, the below configure works on my computer: ./configure CC=clang make -j4 Best Regards, Simo ________________________________ 发件人: Zhu Chunlin <simon_0214@hotmail.com> 发送时间: 2021年10月25日 21:26 收件人: musl@lists.openwall.com <musl@lists.openwall.com> 抄送: nullplan@gmx.net <nullplan@gmx.net> 主题: 回复: [musl] Failed to build musl 1.2.2 by using clang cross compiler Hello Jeff, Thanks! But when I update the config as you suggest: AR=/usr/local/bin/llvm-ar \ RANLIB=/usr/local/bin/llvm-ranlib \ CC=/usr/local/bin/clang \ CFLAGS="--rtlib=compiler-rt --target=aarch64" \ ASFLAGS="-Wa,--noexecstack" \ LDFLAGS="-Wl,-fuse-ld=/usr/local/bin/ld.lld --rtlib=compiler-rt --target=aarch64" \ LIBCC=-lcompiler_rt \ ./configure --target=aarch64 \ && make It still reports the error as below: [cid:919d9698-56e2-49d2-85c5-8b12ac33e65f] Another question, if I want to use LLVM tool chain instead of GCC, how should I config? Acutally I don't understand why there is gcc error, because I have specify to use clang and ld.lld. Thanks, Simon ________________________________ 发件人: Jeffrey Walton <noloader@gmail.com> 发送时间: 2021年10月25日 16:44 收件人: musl@lists.openwall.com <musl@lists.openwall.com> 抄送: nullplan@gmx.net <nullplan@gmx.net> 主题: Re: [musl] Failed to build musl 1.2.2 by using clang cross compiler On Mon, Oct 25, 2021 at 1:04 AM Zhu Chunlin <simon_0214@hotmail.com<mailto:simon_0214@hotmail.com>> wrote: Hello Markus, Thanks! AR=/usr/local/bin/llvm-ar \ RANLIB=/usr/local/bin/llvm-ranlib \ CC=/usr/local/bin/clang \ CFLAGS="-fuse-ld=/usr/local/bin/ld.lld --rtlib=compiler-rt --target=aarch64" \ LIBCC=-lcompiler_rt \ ./configure --target=aarch64 \ && make But when I use the above config, it reports the below error, but I don't understand why there are gcc error, I have explict specify to use clang and ld.lld [cid:17cb69be492cb971f161] -fuse-ld=/usr/local/bin/ld.lld is a LDFLAG. Since you are using GCC to drive link, set: LDFLAGS = "-Wl,-fuse-ld=/usr/local/bin/ld.lld " --rtlib=compiler-rt and --target=aarch64may need to go into LDFLAGS, too. --noexecstack is a ASFLAG. Use: ASFLAGS = "-Wa,--noexecstack" Jeff [-- Attachment #1.2: Type: text/html, Size: 11345 bytes --] [-- Attachment #2: image.png --] [-- Type: image/png, Size: 44398 bytes --] [-- Attachment #3: image.png --] [-- Type: image/png, Size: 15169 bytes --] [-- Attachment #4: image.png --] [-- Type: image/png, Size: 15169 bytes --] [-- Attachment #5: image.png --] [-- Type: image/png, Size: 236690 bytes --]
[-- Attachment #1.1: Type: text/plain, Size: 1375 bytes --] On Fri, Oct 29, 2021 at 11:46 PM Chunlin Zhu <simon_0214@hotmail.com> wrote: > Hello, > > On my computer I have built and install the llvm toolchain from the source > code by using the below configuration, the llvm lib is installed in the > /usr/local/lib folder. > *cmake -S llvm -B build -G "Unix Makefiles" > -DLLVM_ENABLE_PROJECTS="clang;clang-tools-extra;libcxx;libcxxabi;compiler-rt;lld" > -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD="ARM;X86;AArch64" * > > And I am trying to build musl libc 1.2.2 for aarch64 by using llvm/clang, > and I use the below configure: > *./configure CC=clang --target=aarch64 CFLAGS="-v --target=aarch64 > --rtlib=compiler-rt" AR=/usr/local/bin/llvm-ar > RANLIB=/usr/local/bin/llvm-ranlib LIBCC=-lcompiler_rt > --syslibdir=/usr/local/lib* > > It report the error as below: > > > And I find the compile phase is OK, the problem occurs during the link > phase, I don't understand why finally gcc is invoked. > > > By the way, the below configure works on my computer: > > ./configure CC=clang > > make -j4 > Set LD to clang, too. It sounds like GCC is creeping in because it is a default. For the link error with --noexecstack, the linker needs -z,noexecstack. So add -Wl,-z,noexecstack to LDFLAGS. See the ld(1) man page at https://www.man7.org/linux/man-pages/man1/ld.1.html. ASFLAGS should continue to use --noexecstack. Jeff [-- Attachment #1.2: Type: text/html, Size: 5112 bytes --] [-- Attachment #2: image.png --] [-- Type: image/png, Size: 236690 bytes --] [-- Attachment #3: image.png --] [-- Type: image/png, Size: 15169 bytes --]
[-- Attachment #1.1: Type: text/plain, Size: 2650 bytes --] Hello, I made a change to the Makefile of musl 1.2.2 at line 162, just remove the CFLAGS_ALL. [cid:2dca1e1f-1f39-4eed-bd01-3a2e4eabe70f] Note: The reason why I remove the CFLAGS_ALL, because I find on my computer when "clang --target=aarch64 -fuse-ld=/usr/local/bin/ld.lld -Wl,....." is used, gcc linker will be invoked, but when --target=aarch64 is removed, ld.lld will be invoked as expect. Since CFLAGS_ALL contains the option --target=aarch64, so I modify the Makefile. And use the below configuration: ./configure CC=clang --target=aarch64 CFLAGS="--target=aarch64 --rtlib=compiler-rt" AR=/usr/local/bin/llvm-ar LDFLAGS="-fuse-ld=/usr/local/bin/ld.lld -Wl,-z,noexecstack -m elf64-littleaarch64" RANLIB=/usr/local/bin/llvm-ranlib LIBCC= --syslibdir=/usr/local/lib Then ld.lld is invoked but still report the below error, does anyone have encounter the same problem? [cid:b4dacdde-8d7d-424d-a30a-197c7c38aeaf] Thanks, Simon ________________________________ From: Jeffrey Walton <noloader@gmail.com> Sent: Saturday, October 30, 2021 12:25 To: musl@lists.openwall.com <musl@lists.openwall.com> Subject: Re: [musl] Failed to build musl 1.2.2 by using clang cross compiler On Fri, Oct 29, 2021 at 11:46 PM Chunlin Zhu <simon_0214@hotmail.com<mailto:simon_0214@hotmail.com>> wrote: Hello, On my computer I have built and install the llvm toolchain from the source code by using the below configuration, the llvm lib is installed in the /usr/local/lib folder. cmake -S llvm -B build -G "Unix Makefiles" -DLLVM_ENABLE_PROJECTS="clang;clang-tools-extra;libcxx;libcxxabi;compiler-rt;lld" -DCMAKE_BUILD_TYPE=Release -DLLVM_TARGETS_TO_BUILD="ARM;X86;AArch64" And I am trying to build musl libc 1.2.2 for aarch64 by using llvm/clang, and I use the below configure: ./configure CC=clang --target=aarch64 CFLAGS="-v --target=aarch64 --rtlib=compiler-rt" AR=/usr/local/bin/llvm-ar RANLIB=/usr/local/bin/llvm-ranlib LIBCC=-lcompiler_rt --syslibdir=/usr/local/lib It report the error as below: [cid:ef74a00d-14e8-4a0a-b304-d1d3f4cb73f7] And I find the compile phase is OK, the problem occurs during the link phase, I don't understand why finally gcc is invoked. [cid:17ccf705cf7cb971f163] By the way, the below configure works on my computer: ./configure CC=clang make -j4 Set LD to clang, too. It sounds like GCC is creeping in because it is a default. For the link error with --noexecstack, the linker needs -z,noexecstack. So add -Wl,-z,noexecstack to LDFLAGS. See the ld(1) man page at https://www.man7.org/linux/man-pages/man1/ld.1.html. ASFLAGS should continue to use --noexecstack. Jeff [-- Attachment #1.2: Type: text/html, Size: 9291 bytes --] [-- Attachment #2: image.png --] [-- Type: image/png, Size: 236690 bytes --] [-- Attachment #3: image.png --] [-- Type: image/png, Size: 14293 bytes --] [-- Attachment #4: image.png --] [-- Type: image/png, Size: 192618 bytes --]