RE: Makedumpfile compile errors on Debian 10

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Hi Jiang,

-----Original Message-----
> Hi there,
> 
> I tried to compile version 1.6.7 and master on Debian 10 and got
> following error:
> 
> root@gitlab-runner-stretch:/home/gitlab-runner/makedumpfile-master# make
> cc  -g -O2 -Wall -D_FILE_OFFSET_BITS=64 -D_LARGEFILE_SOURCE
> -D_LARGEFILE64_SOURCE -DVERSION='"1.6.8++"' -DRELEASE_DATE='"16 Nov
> 2020"' -D__x86_64__   print_info.
> o dwarf_info.o elf_info.o erase_info.o sadump_info.o cache.o tools.o
> printk.o arch/arm.o arch/arm64.o arch/x86.o arch/x86_64.o arch/ia64.o
> arch/ppc64.o arch/s390
> x.o arch/ppc.o arch/sparc64.o -rdynamic -o makedumpfile makedumpfile.c
> -lpthread -static -ldw -lbz2 -ldl -lelf -lz -llzma  -lebl
> /usr/bin/ld: erase_info.o: in function `process_eppic_file':
> /home/gitlab-runner/makedumpfile-master/erase_info.c:2202: warning:
> Using 'dlopen' in statically linked applications requires at runtime
> the shared libraries fro
> m the glibc version used for linking
> /usr/bin/ld: //usr/local/lib/libdw.a(dwarf_abbrev_hash.o): in function
> `Dwarf_Abbrev_Hash_insert':
> /home/gitlab-runner/elfutils-0.182/libdw/../lib/dynamicsizehash_concurrent.c:394:
> undefined reference to `pthread_rwlock_tryrdlock'
> /usr/bin/ld: /home/gitlab-runner/elfutils-0.182/libdw/../lib/dynamicsizehash_concurrent.c:394:
> undefined reference to `pthread_rwlock_tryrdlock'
> /usr/bin/ld: /home/gitlab-runner/elfutils-0.182/libdw/../lib/dynamicsizehash_concurrent.c:394:
> undefined reference to `pthread_rwlock_tryrdlock'
> /usr/bin/ld: //usr/local/lib/libdw.a(dwarf_abbrev_hash.o): in function
> `Dwarf_Abbrev_Hash_find':
> /home/gitlab-runner/elfutils-0.182/libdw/../lib/dynamicsizehash_concurrent.c:461:
> undefined reference to `pthread_rwlock_tryrdlock'
> /usr/bin/ld: //usr/local/lib/libdw.a(dwarf_sig8_hash.o): in function
> `Dwarf_Sig8_Hash_insert':
> /home/gitlab-runner/elfutils-0.182/libdw/../lib/dynamicsizehash_concurrent.c:394:
> undefined reference to `pthread_rwlock_tryrdlock'
> /usr/bin/ld:
> //usr/local/lib/libdw.a(dwarf_sig8_hash.o):/home/gitlab-runner/elfutils-0.182/libdw/../lib/dynamicsize
> hash_concurrent.c:394:
> more undefined referenc
> es to `pthread_rwlock_tryrdlock' follow
> collect2: error: ld returned 1 exit status
> make: *** [Makefile:100: makedumpfile] Error 1
> To fix it, I have to make the following change:
> diff --git a/Makefile b/Makefile
> index 388faf7..7006f81 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -65,7 +65,7 @@ LIBS := -lsnappy $(LIBS)
>  CFLAGS += -DUSESNAPPY
>  endif
> 
> -LIBS := -lpthread $(LIBS)
> +LIBS := $(LIBS) -lpthread
> 
>  try-run = $(shell set -e;              \
>         TMP=".$$$$.tmp";                \
> Not sure if it is an issue of Debian or makedumpfile. If it is the
> latter, please fix the Makefile. Thanks.

Thanks for the report.

I'm not sure why it doesn't occur on my recent Fedora machine with
elfutils-0.182, but seems that -lpthread should be put after -ldw, so
the change looks good to me.

Would you post a formal patch?  or I can fix it with your tag
like Signed-off-by or Reported-by.

> Also, I tried the master and version 1.6.7 on Linux kernel 5.10 and
> got a kernel not supported error. Do we know when 5.10 will be
> supported? Thanks.

The latest is makedumpfile-1.6.8, but it was tested with up to kernel 5.9.
I've tested the current master with kernel 5.10 to 5.11-rc5 on x86_64,
it's ok so far.  The next version will support 5.10 officially and
will be released this spring or summer, but not scheduled yet.

Thanks,
Kazu


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