sisyphus

I've got a mingw.org gcc-9.2.0 compiler that's throwing an error when building ext/POSIX: ``` c:/mingw_org/bin/../lib/gcc/mingw32/9.2.0/../../../../mingw32/bin/ld.exe: POSIX.o:POSIX.c:(.text+0x5d04): undefined reference to `isinf' collect2.exe: erreur: ld a retournÚ 1 code d'Útat d'exÚcution gmake[1]:...

I spent quite a bit of time on it and got nowhere. However, I've just found that if I ensure that __USE_MINGW_ANSI_STDIO is not defined, then the xenu/mingw-org branch builds...

I have a (possibly dumb) question about the great_circle_distance documentation in Trig.pm. It states (in part): ``` .... NOTE: this formula thinks in mathematics, not geographically: the *phi* zero is...

> And instead of adjusting the formula so it works with spherical coordinates directly, the author chose to mention in the documentation how to do the necessary conversion from spherical...

> Perhaps it would be less confusing to add this function? Then the documentation for great_circle_distance() could just say something like: If you have geodetic coordinates using degrees, see great_circle_distance_geo()....

Well, it's not really new functionality - it's just using existing functionality to deal with different arguments ;-) If it's too much for the dual-life process to handle, then I...

One of the CI testing environments is now failing t/porting/cmp_version.t. There having been no complaints when the Trig.pm code changed, I don't know why that test should fail when the...

> I wasn’t sure whether to use 1.59_03 or 1.59_04 @pjacklam,I wondered the same thing ... but, after further reflection, I think *you* made the right choice in electing for...

> Is there an easy way to detect this in the test? Yes - we would just need to check $Config{ccflags} for the presence of -D__USE_MINGW_ANSI_STDIO. Given that we already...

After some testing, I can see that this test will pass even if __USE_MINGW_ANSI_STDIO is not defined, if and only if mingw runtime version (__MINGW64_VERSION_MAJOR) is greater than or equal...