On Wed, 8 Feb 2023, 09:49 HHN, <harihara.sn@xxxxxxxxx> wrote: > The patches suggested have worked to generate modules, there must have > been some error on my end when i tried previously. But unfortunately when I > try to compile HPX with these patches I face a couple of errors. > That's a warning, not an error. Any help would be appreciated. I have tried to do a diff between the > successful compile logs (G++-11) and the patches suggested and attached the > file. grep for "/home/hhn/makes/gcc-modules-install/" might help focus on > the warnings more easily. > > Just to summarise the warnings are mostly > 1. > /home/hhn/makes/gcc-modules-install/usr/local/include/c++/13.0.0/atomic:287:22: > warning: ‘unsigned int __atomic_load_4(const volatile void*, int)’ writing > 4 bytes into a region of size 0 overflows the destination > [-Wstringop-overflow=] > 287 | __atomic_load(std::__addressof(_M_i), __ptr, int(__m)); > > 2. > /home/hhn/makes/gcc-modules-install/usr/local/include/c++/13.0.0/bits/new_allocator.h:165:33: > note: call to ‘void operator delete(void*, std::size_t)’ here > 165 | _GLIBCXX_OPERATOR_DELETE(_GLIBCXX_SIZED_DEALLOC(__p, __n)); > > On Wed, Feb 1, 2023 at 4:31 PM Jonathan Wakely <jwakely.gcc@xxxxxxxxx> > wrote: > >> On Wed, 1 Feb 2023 at 10:53, HHN via Gcc-help <gcc-help@xxxxxxxxxxx> >> wrote: >> > >> > I have been working on upgrading the HPX build system to support C++ >> > modules, while trying to experiment with GCC support for C++ modules, I >> > keep running into this issue of unrecognized command-line options. >> > >> > ` >> > g++: error: unrecognized command-line option >> > ‘-fdep-file=CMakeFiles/std_module_example.dir/t3.cxx.o.ddi’ >> > g++: error: unrecognized command-line option >> > ‘-fdep-output=CMakeFiles/std_module_example.dir/t3.cxx.o’ >> > g++: error: unrecognized command-line option ‘-fdep-format=trtbd’ >> >> [...] >> >> > I have tried this with g++ 11.3, g++ 12.1 installed using ubuntu package >> > managers, >> >> As you were told in the cmake forum by Ben B., the patches to add >> -fdep-file etc. are not yet in GCC, so of course it doesn't work with >> releases from more than a year ago. >> >> > I have also tried the same using this certain patch >> > <https://github.com/mathstuf/gcc/tree/p1689r5> as suggested by the >> user on >> > an online forum >> > <https://discourse.cmake.org/t/module-support-for-g-and-clang/7367/2>. >> >> That user is the person who wrote the patch to add -fdep-file, so you >> should listen to them. If it still doesn't work with that patch, then >> you probably didn't apply the patch correctly. >> >> > I have also tried the same using the master >> > <https://github.com/gcc-mirror/gcc> and devel/c++-modules >> > <https://github.com/gcc-mirror/gcc/tree/devel/c++-modules> branch on >> gcc >> > repo. >> >> Obviously it's not going to work with those branches, because the >> patches to add -fdep-file support are not part of GCC yet, as Ben B. >> already told you. >> >> > All of them have given the same errors. Also the devel/c++-modules >> branch >> > compiles to g++ version of g++ (GCC) 11.0.0 20210203 (experimental) >> > [c++-modules revision 20230201-1505], while the master branch has >> > version g++ (GCC) 13.0.1 20230201 (experimental). >> >> Don't use the devel/c++-modules branch. It was used two+ years ago for >> the initial work on modules, but the master branch now has all that >> work and numerous improvements. >> > > > -- > Hari Hara Naveen >
