On darwin, the compiler will generate .dSYM directories (for debug info) alongside executables when invoked, leading to messages like the following in configure output:
checking whether /usr/local/bin/gcc understands -c and -o together... rm: conftest.dSYM: is a directory yes The attached patch ought to fix this by passing the -r flag to the rm invocation that's meant to clean up the conftests. One concern, though, is that in the same invocation, it also tries to remove anything called "core", so I worry what might happen with this change if "core" happens to be a directory... should I handle that separately? Thanks, Eric Gallager
patch-m4_prog-cc-c-o.m4.diff
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