Review Request 118374: Fix finding of Qt5LinguistTools on some systems

[Alex Merry]

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https://git.reviewboard.kde.org/r/118374/
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Review request for Build System, Extra Cmake Modules and KDE Frameworks.


Repository: extra-cmake-modules


Description
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Fix finding of Qt5LinguistTools on some systems

Although ECM does not make use of a compiler directly, the language
affects the search path for CMake packages; in particular, a package
installed to /usr/lib64/cmake will not be found if NONE is passed as the
language argument to project(). This meant that a 64-bit version of
Qt5LinguistTools would not be found on systems where 64-bit libraries
are not installed in the "default architecture" location (/usr/lib).

With this change, the configure step performs some otherwise-unnecessary
tests. We minimise this by explicitly specifying the C language (which
is also what some of the tests use), rather than letting it be the
default (which is C and C++).


Diffs
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  CMakeLists.txt 369bc948c606e444ea880a416d8a36606b198f27 

Diff: https://git.reviewboard.kde.org/r/118374/diff/


Testing
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Configures, builds, tests pass, installs.


Thanks,

Alex Merry

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