kate @4.14.3: error: call to 'abs' is ambiguous

[riccardobrasca]

I get the following error building kate after upgrading to High Sierra (and following the migration guide)

--->  Fetching archive for kate
--->  Attempting to fetch kate-4.14.3_4.darwin_17.x86_64.tbz2 from https://packages.macports.org/kate
--->  Attempting to fetch kate-4.14.3_4.darwin_17.x86_64.tbz2 from http://lil.fr.packages.macports.org/kate
--->  Attempting to fetch kate-4.14.3_4.darwin_17.x86_64.tbz2 from http://mse.uk.packages.macports.org/sites/packages.macports.org/kate
--->  Fetching distfiles for kate
--->  Verifying checksums for kate
--->  Extracting kate
--->  Applying patches to kate
--->  Configuring kate
--->  Building kate
Error: Failed to build kate: command execution failed
Error: See /opt/local/var/macports/logs/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_kde_kate/kate/main.log for details.
Error: Follow https://guide.macports.org/#project.tickets to report a bug.

[ryandesign (Ryan Carsten Schmidt)]

The log says:

:info:build /opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_tarballs_ports_kde_kate/kate/work/kate-4.14.3/part/view/kateviewhelpers.cpp:1706:24: error: call to 'abs' is ambiguous
:info:build             int diff = abs(realLine - currentLine);
:info:build                        ^~~
:info:build /usr/include/stdlib.h:137:6: note: candidate function
:info:build int      abs(int) __pure2;
:info:build          ^
:info:build /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/stdlib.h:115:44: note: candidate function
:info:build inline _LIBCPP_INLINE_VISIBILITY long      abs(     long __x) _NOEXCEPT {return  labs(__x);}
:info:build                                            ^
:info:build /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/stdlib.h:117:44: note: candidate function
:info:build inline _LIBCPP_INLINE_VISIBILITY long long abs(long long __x) _NOEXCEPT {return llabs(__x);}
:info:build                                            ^
:info:build /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/math.h:693:1: note: candidate function
:info:build abs(float __lcpp_x) _NOEXCEPT {return ::fabsf(__lcpp_x);}
:info:build ^
:info:build /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/math.h:697:1: note: candidate function
:info:build abs(double __lcpp_x) _NOEXCEPT {return ::fabs(__lcpp_x);}
:info:build ^
:info:build /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/math.h:701:1: note: candidate function
:info:build abs(long double __lcpp_x) _NOEXCEPT {return ::fabsl(__lcpp_x);}
:info:build ^
:info:build 2 warnings and 1 error generated.

We've seen another occurrence of this call to 'abs' is ambiguous with another port recently...

[NicosPavlov]

This patch should take care of the problem, but would it be possible to confirm this? I have not yet transitioned to High Sierra myself.

[riccardobrasca]

I can do it, but I don't know how to test it. Can you explain what should I do?

[mf2k (Frank Schima)]

​This wiki link should cover it.

[riccardobrasca]

It works! Thank you very much!

[NicosPavlov]

Thanks for the feedback.

[NicosPavlov]

In 374ad7a041b407c0eb50789b1dee4bceda289516/macports-ports:

kate: fix ambiguous 'abs' (fix: #55067)