[llvm-dev] Building LLVM on Mac

[Abid Malik via llvm-dev]

Thanks, Boris and Tobias for the feedback.

The building always stuck at libcxxabi:
----
/Users/abidmalik/Programming/MLIR_target/llvm-project/libcxxabi/include/cxxabi.h:43:26:
error: unknown type name 'size_t'
__cxa_allocate_exception(size_t thrown_size) throw();
                         ^
/Users/abidmalik/Programming/MLIR_target/llvm-project/libcxxabi/include/cxxabi.h:86:75:
error: unknown type name 'uint64_t'
extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_ALWAYS_COLD int
__cxa_guard_acquire(uint64_t *);
                                                                          ^
/Users/abidmalik/Programming/MLIR_target/llvm-project/libcxxabi/include/cxxabi.h:87:76:
error: unknown type name 'uint64_t'
extern _LIBCXXABI_FUNC_VIS _LIBCXXABI_ALWAYS_COLD void
__cxa_guard_release(uint64_t *);

----
I tried with flag
"-I/Users/abidmalik/Programming/MLIR_target/llvm-project/build/include/c++/v1"
but I am getting:
 /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/algorithm:641:
/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cstring:77:9:
error: no member named 'strncmp' in the global namespace
using ::strncmp;

/Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/include/c++/v1/cstring:78:9:
error: no member named 'strcoll' in the global namespace
using ::strcoll;

I feel I am not setting flags for C++ libraries correctly for MacBook (
Ubuntu is doing fine).

Thanks


On Tue, May 4, 2021 at 5:20 AM Tobias Hieta <tobias at plexapp.com> wrote:

> > >  -DCMAKE_C_FLAGS="-isysroot
> /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk"
> -DCMAKE_CXX_FLAGS="-isysroot
> /Library/Developer/CommandLineTools/SDKs/MacOSX10.15.sdk
> >
> > I do not use option -isysroot. Do these directories exist? I think you
> do not have to set it.
>
> The right way to do this is to set -DCMAKE_OSX_SYSROOT - not to pass
> isysroot directly.
>
> -- Tobias
>


-- 
Abid M. Malik
******************************************************
"I have learned silence from the talkative, toleration from the intolerant,
and kindness from the unkind"---Gibran
"Success is not for the chosen few, but for the few who choose" --- John
Maxwell
"Being a good person does not depend on your religion or status in life,
your race or skin color, political views or culture. IT DEPENDS ON HOW GOOD
YOU TREAT OTHERS"--- Abid
"The Universe is talking to us, and the language of the Universe is
mathematics."----Abid
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