[cfe-users] build errors with MinGW-W64 GCC-8.1.0 on Windows
Dear LLVM/clang people, I’m new to LLVM. I used TDM-GCC toolchain with gcc version 5.1.0 before but I want to move on getting LLVM and Clang to work on my system: Windows 7 64bit. I would like to go for a MinGW64 toolchain to build the newest version of LLVM and clang. I downloaded MinGW-W64 GCC-8.1.0 from here: https://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win32/Personal%20Builds/mingw-builds/8.1.0/threads-posix/ There I selected the x86_64-posix-seh version believing that would be the best one. I got llvm and clang plus the llvm libc++ standard library as suggested on the getting started webpage. I put the mingw-w64 bin folder in my PATH. gcc -dumpversion shown 8.1.0 In the llvm build folder I did: cmake -G "MinGW Makefiles" -DCMAKE_BUILD_TYPE=Release .. that completed succesfully mingw32-make -f Makefile It builds to 57%, then a bunch of errors: 1) C:\dev\llvm\projects\libcxx\src\support\win32\thread_win32.cpp:156:8: error: 'InitOnceExecuteOnce' was not declared in this scope 2) C:\dev\llvm\projects\libcxx\src\support\win32\thread_win32.cpp:163:6: error: redefinition of 'bool std::__1::__libcpp_thread_id_equal(std::__1::__libcpp_thread_id, std::__1::__libcpp_thread_id)' 3) And a couple of more errors all in thread_win32.cpp. So I think it would have been better to select the Mingw-w64 x86_64-win32-seh or even x86_64-win32-sjlj version instead? Is a recent Mingw-w64 toolchain version like 8.1.0 a good one to build llvm/clang? Or would an older one be more stable? Thanks anyway for any suggestions. Best regards, Maarten Verhage ___ cfe-users mailing list cfe-users@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-users
Re: [cfe-users] build errors with MinGW-W64 GCC-8.1.0 on Windows
Hi all, You know, as the compile errors all were in thread_win32.cpp I was suspicious how the build would do with x86_64-win32-seh but that failed because Mingw-w64 did not have the header file mutex. As I have the llvm libcxx library with this mutex header file (among other stuff) would there be a way to have Mingw-w64 use this library during the build of llvm and clang or wouldn't that work? Also is there any documentation for specifics in building llvm with Mingw-w64? Regards, Maarten ___ cfe-users mailing list cfe-users@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-users
Re: [cfe-users] build errors with MinGW-W64 GCC-8.1.0 on Windows
- Original Message - From: "Maarten Verhage" To: Sent: Tuesday, November 13, 2018 13:47 Subject: Re: [cfe-users] build errors with MinGW-W64 GCC-8.1.0 on Windows > Hi all, > > You know, as the compile errors all were in thread_win32.cpp I was > suspicious how the build would do with x86_64-win32-seh but that failed > because Mingw-w64 did not have the header file mutex. > > As I have the llvm libcxx library with this mutex header file (among other > stuff) would there be a way to have Mingw-w64 use this library during the > build of llvm and clang or wouldn't that work? > > Also is there any documentation for specifics in building llvm with > Mingw-w64? > > Regards, Maarten Hi all, I've not much experience with building C++ standard libraries like libcxx and libcxxabi. But: As the build of llvm and clang fails on my Windows 7 with Mingw-w64 toolchain. It fails in the standard C++ library part and not in pure C++ code. So I was thinking to first build the provided LLVM libcxx (and libcxxabi) libraries into my Mingw-w64 toolchain. Replacing the standard C++ library of Mingw-w64. And then go for a build of LLVM with clang itself. Could that work? If so believe so, could someone provide advise how to get this done? like: flags to cmake, folder structure and correct PATH settings. Best regards, Maarten Verhage ___ cfe-users mailing list cfe-users@lists.llvm.org http://lists.llvm.org/cgi-bin/mailman/listinfo/cfe-users
