On Wed, Apr 13, 2022, 9:14 PM Chris Johns <chr...@rtems.org> wrote: > On 14/4/2022 6:58 am, Joel Sherrill wrote: > > When you use -std= with gcc, it says to strictly enforce that standard. > C++ is > > NOT POSIX so pthread.h prototypes aren't visible. There are some edge > cases > > where gcc isn't that strict until -pedantic is turned on. Use of long > long in > > C++03 is an example of that. > > > > -D_POSIX_C_SOURCE=200809 is precisely the answer I think but > -D_GNU_SOURCE > > enables almost everything I think. > > > > Anyway, here's a small Makefile with some comments to help: > > Nice and thanks. I reviewed the flags on this page: > > https://www.gnu.org/software/libc/manual/html_node/Feature-Test-Macros.html > > And adding `_XOPEN_SOURCE` to the compiler command line allowed the code to > build. I will raise the strict vs non-strict issue with the project. I > suspect > they are not aware there is an issue. >
One thing I've learned from working the FACE Technical Standard is that it is common to think you are closely following a standard but the tools and environment don't enforce it like you think. When you get the warnings down (assume there are some/lots), turn on -Wall and -pedantic and see where else the code isn't strictly following things. > Chris > _______________________________________________ devel mailing list devel@rtems.org http://lists.rtems.org/mailman/listinfo/devel
