I managed to fix it. I got confused because recently I updated Xcode, but in facts the problem was completely unrelated: I had a project header file named “math.h”. :) Very noob mistake! Interestingly enough, this bug does not pop-out on Linux (using GCC).
So I just renamed “math.h” to a custom name, and now everything is back as before (Ah, pay attention! Most of macOS systems have a case-insensitive filesystem… I firstly renamed the file from “math.h” -> “Math.h”, but it didn’t work either and it took a while to realize that on macOS “math.h” and “Math.h” are the same if the FS is case-insensitive. In any case thanks Juan for your help! :) _ -. .´ |∞∞∞∞ ', ; |∞∞∞∞∞∞ ˜˜ |∞∞∞∞∞∞∞∞∞ RdB ,., |∞∞∞∞∞∞ .' '. |∞∞∞∞ -' `’ https://rdb.is On 8 November 2019 at 17:36:08, Juan Sanchez (juan.e.sanc...@gmail.com) wrote: I had an issue last week, where the isysroot setting was messed up, after I had done an xcode update. Even though I am using Mojave (10.14), instead of Catalina (10.15), xcode has apparently upped the version number from 10.14 to 10.15. /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk Creating a brand new build directory fixed the problem, since the cached information concerning the compiler environment was invalid. Regards, Juan On Fri, Nov 8, 2019 at 10:18 AM Ruben Di Battista <rubendibatti...@gmail.com> wrote: Hello, Tryign to compile a project that built correctly since now. I guess something changed on my system, and now I’m getting this error: Scanning dependencies of target Mercurve /Applications/Xcode.app/Contents/Developer/usr/bin/make -f src/libs/CMakeFiles/Mercurve.dir/build.make src/libs/CMakeFiles/Mercurve.dir/build [ 4%] Building CXX object src/libs/CMakeFiles/Mercurve.dir/BlockMerger.cxx.o cd /Users/rubendibattista/git/x/Mercurve/build/src/libs && /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ -DMercurve_EXPORTS -I/Users/rubendibattista/git/x/Mercurve/src/libs -isystem /opt/local/include/vtk-8.1 -isystem /opt/local/include -isystem /opt/local/include/mpich-mp -isystem /opt/local/include/libxml2 -isysroot /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk -mmacosx-version-min=10.14 -fPIC -std=gnu++11 -o CMakeFiles/Mercurve.dir/BlockMerger.cxx.o -c /Users/rubendibattista/git/x/Mercurve/src/libs/BlockMerger.cxx In file included from /Users/rubendibattista/git/x/Mercurve/src/libs/BlockMerger.cxx:21: In file included from /Users/rubendibattista/git/x/Mercurve/src/libs/BlockMerger.h:28: In file included from /Users/rubendibattista/git/x/Mercurve/src/libs/types.h:25: In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/unordered_set:363: In file included from /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/__hash_table:19: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cmath:314:9: error: no member named 'signbit' in the global namespace using ::signbit; ~~^ /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cmath:315:9: error: no member named 'fpclassify' in the global namespace using ::fpclassify; ~~^ /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/../include/c++/v1/cmath:316:9: error: no member named 'isfinite' in the global namespace Something got messed up with Xcode update I guess. I also tried to downgrade Xcode without success. Does anyone have hints on how to solve this? In particular I’m not entirely sure that the `-isysroot` flag the cmake provides is correct anymore. Is that possible? _ -. .´ |∞∞∞∞ ', ; |∞∞∞∞∞∞ ˜˜ |∞∞∞∞∞∞∞∞∞ RdB ,., |∞∞∞∞∞∞ .' '. |∞∞∞∞ -' `’ https://rdb.is -- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: https://cmake.org/mailman/listinfo/cmake
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-- Powered by www.kitware.com Please keep messages on-topic and check the CMake FAQ at: http://www.cmake.org/Wiki/CMake_FAQ Kitware offers various services to support the CMake community. For more information on each offering, please visit: CMake Support: http://cmake.org/cmake/help/support.html CMake Consulting: http://cmake.org/cmake/help/consulting.html CMake Training Courses: http://cmake.org/cmake/help/training.html Visit other Kitware open-source projects at http://www.kitware.com/opensource/opensource.html Follow this link to subscribe/unsubscribe: https://cmake.org/mailman/listinfo/cmake