Bug#928254: gcc-8: -static-libasan does not work with GNU MPFR

[Matthias Klose <doko@debian.org>]

On 30.04.19 19:05, Vincent Lefevre wrote:
> Package: gcc-8
> Version: 8.3.0-7
> Severity: minor
> 
> When I build and check GNU MPFR with:
> 
>   ./configure CFLAGS="-fsanitize=address -static-libasan"
>   make
>   make check
> 
> I get lots of failure with the error:
> 
>   Your application is linked against incompatible ASan runtimes.
> 
> Though -static-libasan has been used, there is still a dynamic libasan,
> as shown by ldd on a test program:
> 
>         libasan.so.5 => /usr/lib/x86_64-linux-gnu/libasan.so.5 (0x00007fdcf052d000)
> 
> This may be the cause of the issue.
> 
> If there is a limitation (due to the use of other shared libraries?),
> this should be mentioned in the gcc man page and manual.

the linker never sees your CFLAGS. At least -static-libasan needs to be added to
LDFLAGS.