autoconf #27

Job	Run time
llvm-mingw (msvcrt)	23m 33s
gcc (msvcrt, x86_64)	20m 16s
gcc (ucrt, x86_64)	19m 42s
llvm-mingw (ucrtbase)	23m 23s
gcc (ucrt, i686)	18m 45s
llvm-mingw (ucrt)	23m 38s
gcc (msvcrt, i686)	18m 20s
gcc-cross (ucrt, i686)	17m 38s
gcc-cross (msvcrt, x86_64)	17m 22s
gcc-cross (msvcrt, i686)	17m 29s
gcc-cross (ucrt, x86_64)	18m 52s
test-llvm-mingw (x86_64, ucrtbase)	3m 33s
test-libcxx (x86_64)	1h 10m 3s
test-llvm-mingw (x86_64, ucrt)	3m 28s
test-libcxx (x86_64, i686-w64-mingw32-)	1h 9m 5s
test-llvm-mingw (x86_64, msvcrt)	3m 42s
linux-test-cross-build-ffmpeg (i686)	5m 5s
test-llvm-mingw (i686, ucrt)	3m 34s
test-llvm-mingw (i686, ucrtbase)	3m 32s
test-ffmpeg (i686)	17m 24s
linux-test-cross-build-ffmpeg (x86_64)	6m 1s
test-ffmpeg (x86_64)	17m 27s
linux-test-cross-build-ffmpeg (aarch64)	4m 46s
linux-test-cross-build-ffmpeg (armv7)	4m 33s
test-llvm-mingw (i686, msvcrt)	3m 59s
test-gcc (msvcrt, i686)	41s
test-gcc (ucrt, i686)	44s
test-gcc (ucrt, x86_64)	49s
test-gcc (msvcrt, x86_64)	42s
	7h 18m 6s

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