C CI

Makefile.compiler: make sure sjg's Mk-files don't add -Werror! #70

Job	Run time
ubuntu-latest bmake CC=gcc NO_SANI=yes MKDOC=yes	30s
ubuntu-latest bmake CC=gcc USE_ASAN=yes MKDOC=yes	39s
ubuntu-latest bmake CC=gcc USE_UBSAN=yes MKDOC=yes	32s
ubuntu-latest bmake CC=gcc USE_LEAKSAN=yes MKDOC=yes	38s
ubuntu-latest bmake CC=clang NO_SANI=yes MKDOC=yes	36s
ubuntu-latest bmake CC=clang USE_ASAN=yes MKDOC=yes	49s
ubuntu-latest bmake CC=clang USE_UBSAN=yes MKDOC=yes	37s
ubuntu-latest bmake CC=clang USE_LEAKSAN=yes MKDOC=yes	41s
ubuntu-20.04 bmake CC=gcc NO_SANI=yes MKDOC=yes	15s
ubuntu-20.04 bmake CC=gcc USE_ASAN=yes MKDOC=yes	14s
ubuntu-20.04 bmake CC=gcc USE_UBSAN=yes MKDOC=yes	26s
ubuntu-20.04 bmake CC=gcc USE_LEAKSAN=yes MKDOC=yes	13s
ubuntu-20.04 bmake CC=clang NO_SANI=yes MKDOC=yes	19s
ubuntu-20.04 bmake CC=clang USE_ASAN=yes MKDOC=yes	21s
ubuntu-20.04 bmake CC=clang USE_UBSAN=yes MKDOC=yes	19s
ubuntu-20.04 bmake CC=clang USE_LEAKSAN=yes MKDOC=yes	15s
macos-latest bmake CC=clang NO_SANI=yes MKDOC=no	1m 21s
macos-latest bmake CC=clang USE_ASAN=yes MKDOC=no	1m 6s
macos-latest bmake CC=clang USE_UBSAN=yes MKDOC=no	48s
macos-latest bmake CC=clang USE_LEAKSAN=yes MKDOC=no	2m 13s
macos-11 bmake CC=clang NO_SANI=yes MKDOC=no	3m 6s
macos-11 bmake CC=clang USE_ASAN=yes MKDOC=no	2m 38s
macos-11 bmake CC=clang USE_UBSAN=yes MKDOC=no	2m 45s
macos-11 bmake CC=clang USE_LEAKSAN=yes MKDOC=no	2m 44s
	24m 5s

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