Source: mariadb-10.3
Version: 1:10.1.37-1
Severity: normal
User: debian-powerpc@lists.debian.org
Usertags: powerpc
Hello!
On some 32-bit targets like mips or powerpc, the mariabdb-10.3 build fails
with:
error: #error atomic ops for this platform are not implemented
This is because the test for C++11 atomics in configure.cmake fails:
CHECK_CXX_SOURCE_COMPILES("
int main()
{
long long int var= 1;
long long int *ptr= &var;
return (int)__atomic_load_n(ptr, __ATOMIC_SEQ_CST);
}"
HAVE_GCC_C11_ATOMICS)
Trying to build this code on ppc64 works fine:
glaubitz@redpanda:~/mariadb$ g++ cpp11test.cpp -o cpp11test
glaubitz@redpanda:~/mariadb$ ./cpp11test
On powerpc, we need -latomic otherwise the compilation fails
and HAVE_GCC_C11_ATOMICS is set to false:
root@kapitsa:~# g++ cpp11test.cpp -o cpp11test
/usr/bin/ld: /tmp/ccyivhlO.o: in function `main':
cpp11test.cpp:(.text+0x48): undefined reference to `__atomic_load_8'
collect2: error: ld returned 1 exit status
root@kapitsa:~#
root@kapitsa:~# g++ cpp11test.cpp -o cpp11test -latomic
root@kapitsa:~#
I have no idea, however, how to tell cmake here to pass -latomic, I'm
not a cmake expert.
Adrian
--
.''`. John Paul Adrian Glaubitz
: :' : Debian Developer - glaub...@debian.org
`. `' Freie Universitaet Berlin - glaub...@physik.fu-berlin.de
`- GPG: 62FF 8A75 84E0 2956 9546 0006 7426 3B37 F5B5 F913
