Commit b1da4c9
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docs(analysis): measure from the mcpp entry point, not from its compiler
The second finding was measured by running `clang++ -print-search-dirs`
directly. That is not mcpp's build line — going around the thing under test
to ask one of its components returns the component's default behaviour, not
what mcpp made it do.
The criterion is what mcpp emits: the build report, and the flags in the
generated build.ninja. Under that criterion the finding is sharper — gcc
needs mcpp to say nothing because its driver carries the target sysroot,
while clang switches targets with `--target=` and needs one supplied, and
mcpp supplies an empty ldflags with no -B, -L or --sysroot.
Also states the axes in full: the build machine is one of them, and this
sweep had exactly one.1 parent 2cee1d0 commit b1da4c9
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