qt57-qtbase @5.7.1_15 -- Fails to Configure on Mtn Lion -- "fatal error: 'string_view' file not found"

[RobK88]

I am unable to upgrade qt57-qtbase to @5.7.1_15. It fails at the configure stage. I see a couple of errors. See below and the attached main.log.

:info:configure /opt/local/include/unicode/uset.h:36:10: fatal error: 'string_view' file not found
:info:configure #include <string_view>
:info:configure          ^
:info:configure 2 errors generated.
:info:configure make: *** [icu.o] Error 1
:info:configure ICU disabled.
:info:configure The ICU library support cannot be enabled.
:info:configure  Turn on verbose messaging (-v) to ./configure to see the final report.
:info:configure  If you believe this message is in error you may use the continue
:info:configure  switch (-continue) to ./configure to continue.

[RobK88]

main.log

[aeiouaeiouaeiouaeiouaeiouaeiou]

ICU >76 was significantly rewritten to take advantage of C++17 features. It may be worth using only ​icu58 for older versions of Qt.

[RobK88]

@aeiouaeiouaeiouaeiouaeiouaeiou -- Thanks for the insight. If the port uses icu58 for older versions of Qt, it should build properly on Mtn Lion etc.

Since qmake uses pkgconfig to look for icu, it looks like the patch files will need to be updated. Not as easy a fix as simply changing the dependencies of a port.

In May when I have time, I will see how easy the fix will be.

[aeiouaeiouaeiouaeiouaeiouaeiou]

Is there any progress on this ticket?

[RobK88]

@aeiouaeiouaeiouaeiouaeiouaeiou -- No. I still cannot build qt57-qtbase on Mtn Lion. Pity..