CMake Error - immintrin.h

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1

When I attempt to build the latest version of LAMMPS (from git) with cmake, it
is unable to find `immintrin.h` even though it exists.

The relevant output is as follows:

CMakeError.log (1.33 KB)

CMakeOutput.log (106 KB)

2

thanks for reporting. in the future, please report such issues on github, especially since this applies only to the development branch.
please try the following change as a remedy:

diff --git a/cmake/CMakeLists.txt b/cmake/CMakeLists.txt
index 911b6f0f1…8ab954048 100644
— a/cmake/CMakeLists.txt
+++ b/cmake/CMakeLists.txt
@@ -1135,7 +1135,7 @@ endif()

if(PKG_USER-INTEL)
include(CheckIncludeFile)

  • check_include_file(immintrin.h FOUND_IMMINTRIN)
  • check_include_file_cxx(immintrin.h FOUND_IMMINTRIN)
    if(NOT FOUND_IMMINTRIN)
    message(FATAL_ERROR "immintrin.h header not found, Intel package won’t w>
    endif()
3

It works with the change. Thanks a lot!

I wrote to the mailing list because I wasn't sure if it was indeed an issue
with lammps' files. Next time, I'll err on the side of assuming to the
contrary. :slight_smile: