Build error "‘bfd_get_section_flags’ was not declared in this scope"

[erksch]

Hey there.

I tried to build aws-lambda-cpp on my Ubuntu 20.4 machine but got the following errors:

In file included from /home/erik/Projects/tuk/aws-lambda-cpp/src/backward.cpp:26:0:
/home/erik/Projects/tuk/aws-lambda-cpp/src/backward.h: In member function ‘void backward::TraceResolverLinuxImpl<backward::trace_resolver_tag::libbfd>::find_in_section(bfd_vma, bfd_vma, backward::TraceResolverLinuxImpl<backward::trace_resolver_tag::libbfd>::bfd_fileobject&, asection*, backward::TraceResolverLinuxImpl<backward::trace_resolver_tag::libbfd>::find_sym_result&)’:
/home/erik/Projects/tuk/aws-lambda-cpp/src/backward.h:1235:14: error: ‘bfd_get_section_flags’ was not declared in this scope
         if ((bfd_get_section_flags(fobj.handle.get(), section) & SEC_ALLOC) == 0)
              ^~~~~~~~~~~~~~~~~~~~~
/home/erik/Projects/tuk/aws-lambda-cpp/src/backward.h:1235:14: note: suggested alternative: ‘bfd_set_section_flags’
         if ((bfd_get_section_flags(fobj.handle.get(), section) & SEC_ALLOC) == 0)
              ^~~~~~~~~~~~~~~~~~~~~
              bfd_set_section_flags
/home/erik/Projects/tuk/aws-lambda-cpp/src/backward.h:1238:28: error: ‘bfd_get_section_vma’ was not declared in this scope
         bfd_vma sec_addr = bfd_get_section_vma(fobj.handle.get(), section);
                            ^~~~~~~~~~~~~~~~~~~
/home/erik/Projects/tuk/aws-lambda-cpp/src/backward.h:1238:28: note: suggested alternative: ‘bfd_set_section_vma’
         bfd_vma sec_addr = bfd_get_section_vma(fobj.handle.get(), section);
                            ^~~~~~~~~~~~~~~~~~~
                            bfd_set_section_vma
/home/erik/Projects/tuk/aws-lambda-cpp/src/backward.h:1239:30: error: ‘bfd_get_section_size’ was not declared in this scope
         bfd_size_type size = bfd_get_section_size(section);
                              ^~~~~~~~~~~~~~~~~~~~
/home/erik/Projects/tuk/aws-lambda-cpp/src/backward.h:1239:30: note: suggested alternative: ‘bfd_set_section_size’
         bfd_size_type size = bfd_get_section_size(section);
                              ^~~~~~~~~~~~~~~~~~~~
                              bfd_set_section_size
make[2]: *** [CMakeFiles/aws-lambda-runtime.dir/build.make:89: CMakeFiles/aws-lambda-runtime.dir/src/backward.cpp.o] Fehler 1
make[1]: *** [CMakeFiles/Makefile2:76: CMakeFiles/aws-lambda-runtime.dir/all] Fehler 2
make: *** [Makefile:130: all] Fehler 2

CMake: 3.16.3
GCC: 9.3.0
Distro: Ubuntu 20.4.

As far as I can tell, libbfd exists:

$ locate libbfd
/snap/gnome-3-34-1804/24/usr/lib/x86_64-linux-gnu/libbfd-2.30-system.so
/snap/gnome-3-34-1804/33/usr/lib/x86_64-linux-gnu/libbfd-2.30-system.so
/usr/lib/x86_64-linux-gnu/libbfd-2.34-system.so
/usr/lib/x86_64-linux-gnu/libbfd.a
/usr/lib/x86_64-linux-gnu/libbfd.so

[erksch]

Update: a colleague managed to build it. He had the following for locate libbfd:

/snap/gnome-3-34-1804/27/usr/lib/x86_64-linux-gnu/libbfd-2.30-system.so
/snap/gnome-3-34-1804/33/usr/lib/x86_64-linux-gnu/libbfd-2.30-system.so
/usr/lib/x86_64-linux-gnu/libbfd-2.33-system.so

So I am using 2.34 of binutils and he using 2.33.

So I looked into the code of binutils and indeed, the interface has changed between the versions.
Instead of bfd_get_section_size etc., it is now just bfd_section_size. Also for reference this stackoverflow post with answer.

[marcomagdy]

Fortunately, the issue seems to be already fixed in backward. I will update the source here.
Thanks for reporting it.