From 0c9539ddf021cf86bd72362598ba70516acaae37 Mon Sep 17 00:00:00 2001
From: Alexander Hampel <ahampel@flatironinstitute.org>
Date: Fri, 8 Mar 2024 11:06:53 -0500
Subject: [PATCH] [build] fix intel f2py build of elk converter (#249)

* [build] fix intel f2py build of elk converter

* improvements from @wentzell
---
 .../converters/elktools/elkwrappers/CMakeLists.txt    | 11 ++++++++---
 1 file changed, 8 insertions(+), 3 deletions(-)

diff --git a/python/triqs_dft_tools/converters/elktools/elkwrappers/CMakeLists.txt b/python/triqs_dft_tools/converters/elktools/elkwrappers/CMakeLists.txt
index c0c9daea..bda8dbbd 100644
--- a/python/triqs_dft_tools/converters/elktools/elkwrappers/CMakeLists.txt
+++ b/python/triqs_dft_tools/converters/elktools/elkwrappers/CMakeLists.txt
@@ -1,18 +1,23 @@
 
 # List the sources
 set(module_name "getpmatelk")
-set(fortran_src_file "${CMAKE_CURRENT_SOURCE_DIR}/getpmatelk.f90") 
+set(fortran_src_file "${CMAKE_CURRENT_SOURCE_DIR}/getpmatelk.f90")
 
 set(generated_module_file ${module_name}${TRIQS_PYTHON_MODULE_EXT})
 
 add_custom_target(${module_name} ALL
-  DEPENDS ${generated_module_file} 
+  DEPENDS ${generated_module_file}
   )
 
+# for Intel fortran compilers we manually have to link against libiomp5 (-fqopenmp is always on in f2py)
+if(CMAKE_Fortran_COMPILER_ID MATCHES "Intel")
+  set(F2PY_INTEL_OPTIONS -liomp5 --fcompiler=intelem)
+endif()
+
 ##generate the fortran python wrapper shared library
 add_custom_command(
   OUTPUT ${generated_module_file}
-  COMMAND ${TRIQS_PYTHON_EXECUTABLE} -m numpy.f2py --build-dir ${CMAKE_CURRENT_BINARY_DIR}/meson --f90exec=${CMAKE_Fortran_COMPILER} --f77exec=${CMAKE_Fortran_COMPILER} -c ${fortran_src_file} -m ${module_name} > elk_f2py.log
+  COMMAND ${TRIQS_PYTHON_EXECUTABLE} -m numpy.f2py --build-dir ${CMAKE_CURRENT_BINARY_DIR}/meson --f90exec=${CMAKE_Fortran_COMPILER} --f77exec=${CMAKE_Fortran_COMPILER} ${F2PY_INTEL_OPTIONS} -c ${fortran_src_file} -m ${module_name} > elk_f2py.log
   WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR}
   )