bug#68429: Catch2-3.5.1 tests fails on i686-linux, SSE extension

[Richard Sent]

Opening a ticket so discussions a bit more organized. Hope this doesn't 
step on anybody's toes.
Catch2-3.5.1 fails to build with system=i686-linux, log attached. This 
is due to a test added upstream that assumes the SSE extension is 
present, 
SelfTest/IntrospectiveTests/RandomNumberGeneration.tests.cpp:570.
One fix was proposed that replaces GCC with Clang, attached. This works 
because Clang assumes the SSE extension by default. If we add 
"-DCMAKE_CXX_FLAGS=-mno-sse", the test fails again.
Another solution is to add "-DCMAKE_CXX_FLAGS=-msse -mfpmath=sse" to the 
existing package definition.
Of the two, the second is more explicit in how the problem is resolved, 
but I don't know if we should assume SSE is present on i686.
An issue was opened upstream at 
https://github.com/catchorg/Catch2/issues/2796
Richard Sent

clang-fix.diff
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sll1zarpy78qi6fgrz9xrpx99hhn3b-catch2-3.5.1.drv.gz
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