On 15 July 2016 at 00:45, Patrick Oppenlander wrote: > Hi, > > I'm running into a build problem when building GCC 6.1.0: > > > /home/patrick/src/e7/toolchain/build/gcc-6.1.0-stage2/./gcc/xgcc > -shared-libgcc -B/home/patrick/src/e7/toolchain/build/gcc-6.1.0-stage2/./gcc > -nostdinc++ > -L/home/patrick/src/e7/toolchain/build/gcc-6.1.0-stage2/powerpc-eabispe/libstdc++-v3/src > -L/home/patrick/src/e7/toolchain/build/gcc-6.1.0-stage2/powerpc-eabispe/libstdc++-v3/src/.libs > -L/home/patrick/src/e7/toolchain/build/gcc-6.1.0-stage2/powerpc-eabispe/libstdc++-v3/libsupc++/.libs > -B/home/patrick/src/e7/toolchain/stage2/powerpc-eabispe/bin/ > -B/home/patrick/src/e7/toolchain/stage2/powerpc-eabispe/lib/ -isystem > /home/patrick/src/e7/toolchain/stage2/powerpc-eabispe/include -isystem > /home/patrick/src/e7/toolchain/stage2/powerpc-eabispe/sys-include > -L/home/patrick/src/e7/toolchain/build/gcc-6.1.0-stage2/./ld -x > c++-header -nostdinc++ -g -O2 > -I/home/patrick/src/e7/toolchain/build/gcc-6.1.0-stage2/powerpc-eabispe/libstdc++-v3/include/powerpc-eabispe > -I/home/patrick/src/e7/toolchain/build/gcc-6.1.0-stage2/powerpc-eabispe/libstdc++-v3/include > -I/home/patrick/src/e7/toolchain/src/gcc-combined/libstdc++-v3/libsupc++ > -O2 -g > /home/patrick/src/e7/toolchain/src/gcc-combined/libstdc++-v3/include/precompiled/extc++.h > -o powerpc-eabispe/bits/extc++.h.gch/O2g.gch > In file included from > /home/patrick/src/e7/toolchain/src/gcc-combined/libstdc++-v3/include/precompiled/extc++.h:69:0: > /home/patrick/src/e7/toolchain/build/gcc-6.1.0-stage2/powerpc-eabispe/libstdc++-v3/include/ext/throw_allocator.h:545:18: > error: 'uniform_real_distribution' in namespace 'std' does not name a > template type > typedef std::uniform_real_distribution<double> distribution_type; > ^~~~~~~~~~~~~~~~~~~~~~~~~ > /home/patrick/src/e7/toolchain/build/gcc-6.1.0-stage2/powerpc-eabispe/libstdc++-v3/include/ext/throw_allocator.h:546:18: > error: 'mt19937' in namespace 'std' does not name a type > typedef std::mt19937 engine_type; > ^~~~~~~ > > > I've done some analysis of this and it turns out to be an issue with the C > library I'm using. > > The configure test "checking for ISO C99 support to TR1 in <stdint.h>" is > failing. > > This stops _GLIBCXX_USE_C99_STDINT_TR1 from being defined which subsequently > causes the above build failure because <random> doesn't include > <bits/random.h> anymore. > > Is this a bug in the build system? If _GLIBCXX_USE_C99_STDINT_TR1 is > required then should the configure abort? > > Alternatively, should libstdc++ still build without > _GLIBCXX_USE_C99_STDINT_TR1?
Yes. Please report it to bugzilla, thanks.
