On Thu, Oct 16, 2014 at 11:25 AM, Uros Bizjak <ubiz...@gmail.com> wrote:
> Recent change caused bootstrap failure on CentOS 5.11: > > /usr/bin/ld: Dwarf Error: found dwarf version '4', this reader only > handles version 2 information. > unwind-dw2-fde-dip_s.o: In function `__pthread_cleanup_routine': > unwind-dw2-fde-dip.c:(.text+0x1590): multiple definition of > `__pthread_cleanup_routine' > /usr/bin/ld: Dwarf Error: found dwarf version '4', this reader only > handles version 2 information. > unwind-dw2_s.o:unwind-dw2.c:(.text+0x270): first defined here > /usr/bin/ld: Dwarf Error: found dwarf version '4', this reader only > handles version 2 information. > unwind-sjlj_s.o: In function `__pthread_cleanup_routine': > unwind-sjlj.c:(.text+0x0): multiple definition of `__pthread_cleanup_routine' > unwind-dw2_s.o:unwind-dw2.c:(.text+0x270): first defined here > /usr/bin/ld: Dwarf Error: found dwarf version '4', this reader only > handles version 2 information. > emutls_s.o: In function `__pthread_cleanup_routine': > emutls.c:(.text+0x170): multiple definition of `__pthread_cleanup_routine' > unwind-dw2_s.o:unwind-dw2.c:(.text+0x270): first defined here > collect2: error: ld returned 1 exit status > gmake[5]: *** [libgcc_s.so] Error 1 > > $ ld --version > GNU ld version 2.17.50.0.6-26.el5 20061020 It looks like a switch-to-c11 fallout. Older glibc versions have issues with c99 (and c11) conformance [1]. Changing "extern __inline void __pthread_cleanup_routine (...)" in system /usr/include/pthread.h to if __STDC_VERSION__ < 199901L extern #endif __inline__ void __pthread_cleanup_routine (...) fixes this issue and allows bootstrap to proceed. However, fixincludes is not yet built in stage1 bootstrap. Is there a way to fix this issue without changing system headers? [1] https://gcc.gnu.org/ml/gcc-patches/2006-11/msg01030.html Uros.
