tkonolige commented on pull request #7917:
URL: https://github.com/apache/tvm/pull/7917#issuecomment-828562180
@mherkazandjian I'm sorry it took me so long to remember this, but I don't
think this PR will work on macOS. Here is what I had in my version of this:
```
# On MacOS, the default C compiler (/usr/bin/cc) is actually a small script
that dispatches to a
# compiler the default SDK (usually
/Library/Developer/CommandLineTools/usr/bin/ or
#
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/).
CMake
# automatically detects what is being dispatched and uses it instead along
with all the flags it
# needs. CMake makes this second compiler avaliable through the
CMAKE_C_COMPILER variable, but it
# does not make the necessary flags available. This leads to configuration
errors in libbacktrace
# because it can't find system libraries. Our solution is to detect if
CMAKE_C_COMPILER lives in
# /Library or /Applications and switch to the default compiler instead.
if(CMAKE_SYSTEM_NAME MATCHES "Darwin" AND (CMAKE_C_COMPILER MATCHES
"^/Library"
OR CMAKE_C_COMPILER MATCHES "^/Applications"))
set(c_compiler "/usr/bin/cc")
else()
set(c_compiler "${CMAKE_C_COMPILER}")
endif()
```
Note that this solution is not quite correct. You probably want to set the
sdk path to whatever the user set it to.
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