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Florent Castelli
726e6454b5
The Ninja and Makefile generators passed the install-name directory of a shared library (`@rpath/` by default, or `INSTALL_NAME_DIR`) through `ConvertToOutputFormat(SHELL)`. That converts directory separators for the host shell, so a Windows host cross-compiling for macOS wrote `-install_name @rpath\libfoo.dylib`. The install name is not a host path: it is embedded in the Mach-O load command and read by dyld on the target, where a backslash never matches anything. Escape the value for the shell without converting separators, in both generators. Add a test to each that fakes an install-name platform and checks the generated build files keep the forward slashes. Fixes: #28104