Well Andrew Ohana is the maintainer of "brial" but he doesn't have the
time to take care of it apparently. We need someone else to get stuff in it.
Mind you, I have no idea what the fix here would be. Someone with C++
knowledge needs to step in with a fix. Then another designed maintainer
could integrate the few pull requests already there and whatever fix
it is for this.
Francois
On 06/01/16 06:31, Dima Pasechnik wrote:
I presume it would be more productive to work on gcc 6.1 support in
Sage, rather than on building old gcc...
Did you try reporting the brial problem upstream?
https://github.com/BRiAl/BRiAl
On Tuesday, May 31, 2016 at 3:43:23 PM UTC+1, Johan S. R. Nielsen wrote:
> indeed, just build with SAGE_INSTALL_GCC set, as described in
>
http://doc.sagemath.org/html/en/installation/source.html#environment-variables
<http://doc.sagemath.org/html/en/installation/source.html#environment-variables>
<sigh> The shipped GCC doesn't seem to compile with GCC 6.1 </sigh>
That might be related to -std defaulting to "gnu++14" and not
"gnu++98";
I don't know. I tried figuring out how I could set the -std flag during
build, but that build system is completely opaque for me.
This is the last few lines spewed out by the failing compiler. Before
that a gazillion C++11 warnings were printed:
[install] [gcc-4.9.3.p1] In file included from ./tm.h:45:0,
[install] [gcc-4.9.3.p1] from ../../src/gcc/cp/except.c:27:
[install] [gcc-4.9.3.p1] ../../src/gcc/defaults.h:126:24: warning:
invalid suffix on literal; C++11 requires a space between literal
and string macro [-Wliteral-suffix]
[install] [gcc-4.9.3.p1] fprintf ((FILE),
","HOST_WIDE_INT_PRINT_UNSIGNED",%un", ^
[install] [gcc-4.9.3.p1] In file included from
../../src/gcc/cp/except.c:1013:0:
[install] [gcc-4.9.3.p1] cfns.gperf: In function 'const char*
libc_name_p(const char*, unsigned int)':
[install] [gcc-4.9.3.p1] cfns.gperf:101:1: error: 'const char*
libc_name_p(const char*, unsigned int)' redeclared inline with
'gnu_inline' attribute
[install] [gcc-4.9.3.p1] cfns.gperf:26:14: note: 'const char*
libc_name_p(const char*, unsigned int)' previously declared here
[install] [gcc-4.9.3.p1] cfns.gperf: At global scope:
[install] [gcc-4.9.3.p1] cfns.gperf:26:14: warning: inline function
'const char* libc_name_p(const char*, unsigned int)' used but never
defined
[install] [gcc-4.9.3.p1] Makefile:1058: recipe for target
'cp/except.o' failed
Best,
Johan
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