Brad King c55c113076 macOS: Revert finding tools inside Xcode that are not in the PATH ...

Since commit 03ab170fe0 (OS X: Enable command-line build without tools in
PATH, 2013-08-05, v2.8.12~111^2) we find compilers such as

    /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/cc

when there is no corresponding compiler in the PATH.  However, modern
macOS versions always have `/usr/bin/cc` in the PATH, so this code path is
never taken (similarly for `make`).  Even if it were, the compilers in
Xcode cannot be used by build systems that do not add an `-isysroot` flag.
Instead, they should be used through the `/usr/bin/cc` wrapper, which
internally calls Xcode's compiler with a default `-isysroot` flag.

2024-11-07 09:46:09 -05:00

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