[lldb][cmake] Error out when building debugserver with CMake 4 #10704
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CMake 4 no longer sets the `CMAKE_OSX_SYSROOT` variable by default. If you've updated to CMake 4 on macOS (e.g. with brew) and try building LLDB with CMake/ninja, this will yield an error when building debugserver that clang is unable to run since it tries to compile files that don't exist. These files are supposed to be generated by the `mig` process. `mig` needs the `CMAKE_OSX_SYSROOT` variable in order to work and without it, it silently fails to generate the files that later on need to be compiled. This commit sets this SDK path for mig and will fatal error out of config when building debugserver without having set CMAKE_OSX_SYSROOT. (cherry picked from commit f6f7c91)
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@swift-ci please test |
JDevlieghere
approved these changes
May 19, 2025
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CMake 4 no longer sets the
CMAKE_OSX_SYSROOTvariable by default. If you've updated to CMake 4 on macOS (e.g. with brew) and try building LLDB with CMake/ninja, this will yield an error when building debugserver that clang is unable to run since it tries to compile files that don't exist.These files are supposed to be generated by the
migprocess.migneeds theCMAKE_OSX_SYSROOTvariable in order to work and without it, it silently fails to generate the files that later on need to be compiled.This commit sets this SDK path for mig and will fatal error out of config when building debugserver without having set CMAKE_OSX_SYSROOT.
(cherry picked from commit f6f7c91)