Adding `+#define _DEFAULT_SOURCE `at https://github.com/GothenburgBitFactory/libshared/blob/9a5f24e2acb38d05afb8f8e316a966dee196a42a/src/Datetime.cpp#L27 fixes it. Passing `-DCMAKE_CXX_FLAGS="-D_STANDARD_SOURCE"` when building taskwarrior doesn't seem to pass it over to libshared
Adding
+#define _DEFAULT_SOURCEatlibshared/src/Datetime.cpp
Line 27 in 9a5f24e
Passing
-DCMAKE_CXX_FLAGS="-D_STANDARD_SOURCE"when building taskwarrior doesn't seem to pass it over to libshared