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Re: libgcov-driver-system bootstrap failure
- From: Eric Gallager <egall at gwmail dot gwu dot edu>
- To: David Edelsohn <dje dot gcc at gmail dot com>
- Cc: Martin Liska <mliska at suse dot cz>, GCC Patches <gcc-patches at gcc dot gnu dot org>
- Date: Wed, 6 Jun 2018 13:28:01 -0400
- Subject: Re: libgcov-driver-system bootstrap failure
- References: <CAGWvnymHoLJNdjC6L5RbV9gt+hGRB0YoY=N9-j54Vbk9jKggOQ@mail.gmail.com>
On 6/5/18, David Edelsohn <dje.gcc@gmail.com> wrote:
> Martin,
>
> With your recent patch, I receive the following failure building
> libgcov-driver-system.c
>
> In file included from
> /nasfarm/edelsohn/src/src/gcc/../libgcc/libgcov-driver.c:322:0:
> /nasfarm/edelsohn/src/src/gcc/../libgcc/libgcov-driver-system.c: In
> function 'char* replace_filename_variables(char*)':
> /nasfarm/edelsohn/src/src/gcc/../libgcc/libgcov-driver-system.c:193:61:
> error: 'mempcpy' was not declared in this scope
> buffer_ptr = (char *)mempcpy (buffer_ptr, filename, start);
>
> mempcpy is a GLIBC extension and not defined in POSIX. There is no
> libiberty implementation. Please avoid use of GLIBC-specific
> functions.
>
> Thanks, David
>
About there being no libiberty implementation, there is a gnulib one:
https://www.gnu.org/software/gnulib/manual/html_node/mempcpy.html
Thus, if the "replace libiberty with gnulib" project is ever picked up
again, it'd be easy to have mempcpy available thru it.