Hi, I am using cmake-3.9.4 on a power9 system with CXX=xlc++ (IBM XL C++) and CMake is misidentifying the compiler as "clang".
% uname -a Linux cn2021 4.11.0-44.4.1.el7a.ppc64le #1 SMP Sat Dec 9 02:17:51 EST 2017 ppc64le ppc64le ppc64le GNU/Linux % echo $CXX xlc++ % $CXX --version IBM XL C/C++ for Linux, V13.1.6 (Community Edition) Version: 13.01.0006.0001 % cmake .. -- The CXX compiler identification is Clang 4.0.1 -- Check for working CXX compiler: /projects/opt/ppc64le/ibm/xlc-13.1.6/xlC/13.1.6/bin/xlc++ -- Check for working CXX compiler: /projects/opt/ppc64le/ibm/xlc-13.1.6/xlC/13.1.6/bin/xlc++ -- works ... Because, the compiler_ID is misidentified, inappropriate compiler options are added when CXX_CXX_STANDARD is set (along with other issues). Question 1: How do I report this as a bug? What additional information is needed to characterize the failure mode? Question 2: Is there a way to force the compiler ID to be "XL" as a temporary work around until the bug is fixed? Thank you, -kt
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