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?
