Jonathan Wakely <[email protected]> writes:
> On 17/11/15 13:33 +0100, Rainer Orth wrote:
>>Solaris 12 recently introduced the C++11 <math.h> overloads, which
>>caused bootstrap to be broken on both mainline and the gcc-5 branch:
>>
>>In file included from
>>/vol/gcc/src/hg/trunk/local/libstdc++-v3/include/precompiled/stdc++.h:41:0:
>>/var/gcc/regression/trunk/12-gcc/build/i386-pc-solaris2.12/libstdc++-v3/include/cmath:
>> In function 'constexpr int std::fpclassify(float)':
>>/var/gcc/regression/trunk/12-gcc/build/i386-pc-solaris2.12/libstdc++-v3/include/cmath:561:3:
>> error: redefinition of 'constexpr int std::fpclassify(float)'
>> fpclassify(float __x)
>> ^
>>In file included from /usr/include/math.h:13:0,
>> from
>> /var/gcc/regression/trunk/12-gcc/build/i386-pc-solaris2.12/libstdc++-v3/include/cmath:44,
>> from
>> /vol/gcc/src/hg/trunk/local/libstdc++-v3/include/precompiled/stdc++.h:41:
>>/usr/include/iso/math_c99.h:647:13: note: 'int std::fpclassify(float)'
>>previously defined here
>> inline int fpclassify(float __X) { return __builtin_fpclassify(
>> ^
>>
>>The following patch fixes this by testing for the problem and wrapping
>>the overloads in include/c_global/cmath and include/tr1/cmath
>>appropriately. The test needs to be dynamic since apparently a backport
>>to Solaris 11 (and perhaps even Solaris 10) is planned.
>
> Why does <tr1/cmath> need to change, did Solaris also define the
> functions in namespace std::tr1?
Without that part, I get errors like
In file included from
/vol/gcc/src/hg/trunk/local/libstdc++-v3/include/precompiled/stdtr1c++.h:37:0:
/var/gcc/regression/trunk/12-gcc/build/i386-pc-solaris2.12/libstdc++-v3/include/tr1/cmath:
In function 'float std::tr1::acosh(float)':
/var/gcc/regression/trunk/12-gcc/build/i386-pc-solaris2.12/libstdc++-v3/include/tr1/cmath:423:18:
error: 'float std::tr1::acosh(float)' conflicts with a previous declaration
acosh(float __x)
^
In file included from /usr/include/math.h:13:0,
from
/var/gcc/regression/trunk/12-gcc/build/i386-pc-solaris2.12/libstdc++-v3/include/cmath:44,
from
/var/gcc/regression/trunk/12-gcc/build/i386-pc-solaris2.12/libstdc++-v3/include/i386-pc-solaris2.12/bits/stdc++.h:41,
from
/vol/gcc/src/hg/trunk/local/libstdc++-v3/include/precompiled/stdtr1c++.h:29:
/usr/include/iso/math_c99.h:712:15: note: previous declaration 'float
std::acosh(float)'
inline float acosh(float __X) { return __acoshf(__X); }
^~~~~
In file included from
/vol/gcc/src/hg/trunk/local/libstdc++-v3/include/precompiled/stdtr1c++.h:37:0:
/var/gcc/regression/trunk/12-gcc/build/i386-pc-solaris2.12/libstdc++-v3/include/tr1/cmath:
In function 'long double std::tr1::acosh(long double)':
/var/gcc/regression/trunk/12-gcc/build/i386-pc-solaris2.12/libstdc++-v3/include/tr1/cmath:427:24:
error: 'long double std::tr1::acosh(long double)' conflicts with a previous
declaration
acosh(long double __x)
^
In file included from /usr/include/math.h:13:0,
from
/var/gcc/regression/trunk/12-gcc/build/i386-pc-solaris2.12/libstdc++-v3/include/cmath:44,
from
/var/gcc/regression/trunk/12-gcc/build/i386-pc-solaris2.12/libstdc++-v3/include/i386-pc-solaris2.12/bits/stdc++.h:41,
from
/vol/gcc/src/hg/trunk/local/libstdc++-v3/include/precompiled/stdtr1c++.h:29:
/usr/include/iso/math_c99.h:754:21: note: previous declaration 'long double
std::acosh(long double)'
inline long double acosh(long double __X) { return __acoshl(__X); }
^~~~~
Rainer
--
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Rainer Orth, Center for Biotechnology, Bielefeld University
