关于gcc:调试glibc构建过程

Debugging glibc build process

我正在尝试在Clear Linux上安装glibc,并且难以调试(甚至无法调试许多makefile中的哪个)。
我以前的尝试是在以下两个线程中进行的:
如何使用configure的" prefix"选项构建到指定目录中?
构建glibc时出错:make / confgure文件出了什么问题?

所以现在我的问题是,当我运行make时,构建会停止:

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  -I../sysdeps/nptl  -I../sysdeps/pthread  -I../sysdeps/gnu  -I../sysdeps/unix/inet  -I../sysdeps/unix/sysv  -I../sysdeps/unix/x86_64  -I../sysdeps/unix  -I../sysdeps/posix  -I../sysdeps/x86_64/64  -I../sysdeps/x86_64/fpu/multiarch  -I../sysdeps/x86_64/fpu  -I../sysdeps/x86/fpu/include -I../sysdeps/x86/fpu  -I../sysdeps/x86_64/multiarch  -I../sysdeps/x86_64  -I../sysdeps/x86  -I../sysdeps/ieee754/float128  -I../sysdeps/ieee754/ldbl-96/include -I../sysdeps/ieee754/ldbl-96  -I../sysdeps/ieee754/dbl-64/wordsize-64  -I../sysdeps/ieee754/dbl-64  -I../sysdeps/ieee754/flt-32  -I../sysdeps/wordsize-64  -I../sysdeps/ieee754  -I../sysdeps/generic  -I.. -I../libio -I.   -D_LIBC_REENTRANT -include /home/james/Downloads/glibc-build/libc-modules.h -DMODULE_NAME=libc -include ../include/libc-symbols.h       -DTOP_NAMESPACE=glibc -I../soft-fp -o /home/james/Downloads/glibc-build/math/s_modfl.o -MD -MP -MF /home/james/Downloads/glibc-build/math/s_modfl.o.dt -MT /home/james/Downloads/glibc-build/math/s_modfl.o
cc1: error: -fassociative-math disabled; other options take precedence [-Werror]
cc1: all warnings being treated as errors
make[2]: *** [/home/james/Downloads/glibc-build/sysd-rules:791: /home/james/Downloads/glibc-build/math/s_modfl.o] Error 1
make[2]: Leaving directory '/home/james/Downloads/glibc/math'
make[1]: *** [Makefile:215: math/subdir_lib] Error 2
make[1]: Leaving directory '/home/james/Downloads/glibc'
make: *** [Makefile:9: all] Error 2

我怀疑这可能是个线索,但这有点麻烦。
与GCC关联的数学

我还猜测,makefile中的后续错误是关联数学出错的结果。

编辑
按照要求,我跑了

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james@clr ~/Downloads/glibc-build $ make -j

这是输出的结尾

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 -I../sysdeps/ieee754/ldbl-96/include -I../sysdeps/ieee754/ldbl-96  -I../sysdeps/ieee754/dbl-64/wordsize-64  -I../sysdeps/ieee754/dbl-64  -I../sysdeps/ieee754/flt-32  -I../sysdeps/wordsize-64  -I../sysdeps/ieee754  -I../sysdeps/generic  -I.. -I../libio -I.   -D_LIBC_REENTRANT -include /home/james/Downloads/glibc-build/libc-modules.h -DMODULE_NAME=libc -include ../include/libc-symbols.h  -DPIC -DSHARED     -DTOP_NAMESPACE=glibc -I../soft-fp -DASSEMBLER  -g -Werror=undef -Wa,--noexecstack   -o /home/james/Downloads/glibc-build/math/s_signbit.os -MD -MP -MF /home/james/Downloads/glibc-build/math/s_signbit.os.dt -MT /home/james/Downloads/glibc-build/math/s_signbit.os
cc1: all warnings being treated as errors
make[2]: *** [/home/james/Downloads/glibc-build/sysd-rules:791: /home/james/Downloads/glibc-build/math/s_modfl.o] Error 1
make[2]: *** Waiting for unfinished jobs....
make[2]: *** [/home/james/Downloads/glibc-build/sysd-rules:825: /home/james/Downloads/glibc-build/math/s_modf.o] Error 1
cc1: all warnings being treated as errors
make[2]: *** [/home/james/Downloads/glibc-build/sysd-rules:893: /home/james/Downloads/glibc-build/math/s_modff.o] Error 1
cc1: all warnings being treated as errors
make[2]: *** [/home/james/Downloads/glibc-build/sysd-rules:757: /home/james/Downloads/glibc-build/math/s_modff128.o] Error 1
cc1: all warnings being treated as errors
make[2]: *** [/home/james/Downloads/glibc-build/sysd-rules:807: /home/james/Downloads/glibc-build/math/s_modfl.os] Error 1
cc1: all warnings being treated as errors
make[2]: *** [/home/james/Downloads/glibc-build/sysd-rules:841: /home/james/Downloads/glibc-build/math/s_modf.os] Error 1
make[2]: Leaving directory '/home/james/Downloads/glibc/math'
make[1]: *** [Makefile:215: math/subdir_lib] Error 2
make[1]: Leaving directory '/home/james/Downloads/glibc'
make: *** [Makefile:9: all] Error 2

编辑2:更多信息,以回应Basile的评论:
我需要glibc来运行Phoronix Test Suite的某些模块,将来我可能会需要它来构建R的库。据我所知,Clear Linux中不包含它(至少PTS认为我没有。安装它),并且在可用捆绑包列表中看不到它。
版本:

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    james@clr ~/Downloads $ uname -r
    4.17.1-582.native
    james@clr ~/Downloads $ gcc --version
    gcc (Clear Linux OS for Intel Architecture) 8.1.1 20180514
    Copyright (C) 2018 Free Software Foundation, Inc.
    This is free software; see the source for copying conditions.  There is NO
    warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.



Configure commands

james@clr ~/Downloads $ git clone git://sourceware.org/git/glibc.git
james@clr ~/Downloads $ cd glibc
james@clr ~/Downloads/glibc $ git checkout --track -b local_glibc-2.27 origin/release/2.27/master
Branch 'local_glibc-2.27' set up to track remote branch 'release/2.27/master' from 'origin'.
Switched to a new branch 'local_glibc-2.27'
james@clr ~/Downloads/glibc $ mkdir /home/james/Downloads/glibc-build/
james@clr ~/Downloads/glibc $ cd /home/james/Downloads/glibc-build/
james@clr ~/Downloads/glibc-build $ ~/Downloads/glibc/configure --prefix=/home/james/Downloads/glibc-build
checking build system type... x86_64-pc-linux-gnu
checking host system type... x86_64-pc-linux-gnu
checking for gcc... gcc
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for readelf... readelf
checking whether we are using the GNU C++ compiler... yes
checking whether g++ accepts -g... yes
checking whether g++ can link programs... yes
checking for sysdeps preconfigure fragments... aarch64 alpha arm hppa i386 m68k microblaze mips nios2 powerpc riscv s390 sh sparc tile x86_64 checking whether gcc compiles in -mx32 mode by default... no

checking for use of fpu sysdeps directories... yes
checking for -fstack-protector... yes
checking for -fstack-protector-strong... yes
checking for -fstack-protector-all... yes
checking for assembler and linker STT_GNU_IFUNC support... yes
checking for gcc attribute ifunc support... yes
checking if compiler warns about alias for function with incompatible types... yes
checking sysdep dirs... sysdeps/unix/sysv/linux/x86_64/64 sysdeps/unix/sysv/linux/x86_64 sysdeps/unix/sysv/linux/x86 sysdeps/x86/nptl sysdeps/unix/sysv/linux/wordsize-64 sysdeps/x86_64/nptl sysdeps/unix/sysv/linux sysdeps/nptl sysdeps/pthread sysdeps/gnu sysdeps/unix/inet sysdeps/unix/sysv sysdeps/unix/x86_64 sysdeps/unix sysdeps/posix sysdeps/x86_64/64 sysdeps/x86_64/fpu/multiarch sysdeps/x86_64/fpu sysdeps/x86/fpu sysdeps/x86_64/multiarch sysdeps/x86_64 sysdeps/x86 sysdeps/ieee754/float128 sysdeps/ieee754/ldbl-96 sysdeps/ieee754/dbl-64/wordsize-64 sysdeps/ieee754/dbl-64 sysdeps/ieee754/flt-32 sysdeps/wordsize-64 sysdeps/ieee754 sysdeps/generic
checking for a BSD-compatible install... /usr/bin/install -c
checking whether ln -s works... yes
checking whether as is GNU as... yes
checking whether ld is GNU ld... yes
checking for as... as
checking version of as... 2.30, ok
checking for ld... ld
checking version of ld... 2.30, ok
checking for gnumake... no
checking for gmake... no
checking for make... make
checking version of make... 4.2.1, ok
checking for gnumsgfmt... no
checking for gmsgfmt... no
checking for msgfmt... msgfmt
checking version of msgfmt... 0.19.8.1, ok
checking for makeinfo... makeinfo
checking version of makeinfo... 6.5, ok
checking for sed... sed
checking version of sed... 4.5, ok
checking for gawk... gawk
checking version of gawk... 4.2.1, ok
checking for bison... bison
checking version of bison... 3.0.5, ok
checking if gcc is sufficient to build libc... yes
checking for nm... gcc-nm
checking for python3... python3
checking LD_LIBRARY_PATH variable... ok
checking for bash... /usr/bin/bash
checking for perl... /usr/bin/perl
checking for install-info... /usr/bin/install-info
checking for .set assembler directive... yes
checking linker support for protected data symbol... yes
checking linker support for INSERT in linker script... yes
checking for broken __attribute__((alias()))... no
checking whether to put _rtld_local into .sdata section... no
checking whether to use .ctors/.dtors header and trailer... no
checking for libunwind-support in compiler... no
checking whether --noexecstack is desirable for .S files... yes
checking for -z combreloc... yes
checking for linker that supports -z execstack... yes
checking for linker that supports --no-dynamic-linker... yes
checking for -static-pie... yes
checking for -fpie... yes
checking for --hash-style option... yes
checking for sufficient default -shared layout... no
checking for GLOB_DAT reloc... yes
checking linker output format... elf64-x86-64
checking for -fno-toplevel-reorder -fno-section-anchors... yes
checking for -mtls-dialect=gnu2... yes
checking whether cc puts quotes around section names... no
checking for __builtin_memset... no
checking for redirection of built-in functions... yes
checking for compiler option to disable generation of FMA instructions... -ffp-contract=off
checking if gcc accepts -fno-tree-loop-distribute-patterns with __attribute__ ((__optimize__))... yes
checking for libgd... yes
checking for is_selinux_enabled in -lselinux... no
checking for _FORTIFY_SOURCE predefine... yes
checking whether the linker provides working __ehdr_start... yes
checking for __builtin_trap with no external dependencies... yes
checking whether the C++ compiler supports thread_local... yes
running configure fragment for sysdeps/unix/sysv/linux/x86_64/64
running configure fragment for sysdeps/unix/sysv/linux/x86_64
running configure fragment for sysdeps/unix/sysv/linux
checking installed Linux kernel header files... 3.2.0 or later
checking for kernel header at least 3.2.0... ok
checking for symlinks in /home/james/Downloads/glibc-build/include... ok
running configure fragment for sysdeps/gnu
running configure fragment for sysdeps/unix/inet
running configure fragment for sysdeps/x86_64
checking for AVX512DQ support in assembler... yes
checking for AVX512 support... yes
checking for Intel MPX support... yes
checking whether -fPIC is default... no
checking whether -fPIE is default... no
configure: creating ./config.status
config.status: creating config.make
config.status: creating Makefile
config.status: creating config.h
config.status: executing default commands

编辑3:make的FULL输出太长而无法包含,因此我将其放在pastebin上:
https://pastebin.com/H3yGC5aj


您构成的编译器命令行包含以下标志:

-fassociative-math -fasynchronous-unwind-tables -feliminate-unused-debug-types -fexceptions -ffat-lto-objects -fmerge-all-constants -fno-semantic-interposition -fno-signed-zeros -fno-stack-protector -fno-trapping-math -frounding-math -fstack-protector -ftree-loop-distribute-patterns

但是,-fassociative-math是不安全的数学优化之一,无法使用它们构建glibc,因为使用这种优化,数学库会产生错误的结果-正如您所发现的,某些数学部分需要一些编译器标志 库甚至与它们不兼容。

您没有将这些标志显式传递给configuremake,因此很可能它们来自CFLAGS环境变量。 您需要在调用configuremake之前取消设置。