build

Merge pull request #168 from ngtcp2/cmake-enable-werror #487

Job	Run time
build-cross (x86_64-w64-mingw32)	1m 51s
build (ubuntu-22.04, gcc, autotools)	52s
build-cross (i686-w64-mingw32)	2m 5s
build-windows (x86)	2m 32s
build (ubuntu-22.04, gcc, cmake)	41s
build-windows (x64)	1m 44s
build (ubuntu-22.04, clang, autotools)	38s
build (ubuntu-22.04, clang, distcheck)	52s
build (ubuntu-22.04, clang, cmake)	41s
build (macos-12, gcc, autotools)	1m 43s
build (macos-12, gcc, cmake)	1m 8s
build (macos-12, clang, autotools)	1m 22s
build (macos-12, clang, cmake)	1m 6s
	17m 15s

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