id summary reporter owner description type status priority milestone component version resolution keywords cc 6223 Python.h not found Gerrer arunkumar palanisamy " I try this example to include a Python function in OpenModelica: https://openmodelica.org/doc/OpenModelicaUsersGuide/latest/interop_c_python.html However I get following error : make -j2 -f CallExternalPython.makefile clang -Os -fPIC -mfpmath=sse -fno-dollars-in-identifiers -I""/usr/bin/../include/omc/c"" -I. -DOPENMODELICA_XML_FROM_FILE_AT_RUNTIME -DOMC_MODEL_PREFIX=CallExternalPython -DOMC_NUM_MIXED_SYSTEMS=0 -DOMC_NUM_LINEAR_SYSTEMS=0 -DOMC_NUM_NONLINEAR_SYSTEMS=0 -DOMC_NDELAY_EXPRESSIONS=0 -DOMC_NVAR_STRING=0 -c -o CallExternalPython.o CallExternalPython.c clang -Os -fPIC -mfpmath=sse -fno-dollars-in-identifiers -I""/usr/bin/../include/omc/c"" -I. -DOPENMODELICA_XML_FROM_FILE_AT_RUNTIME -DOMC_MODEL_PREFIX=CallExternalPython -DOMC_NUM_MIXED_SYSTEMS=0 -DOMC_NUM_LINEAR_SYSTEMS=0 -DOMC_NUM_NONLINEAR_SYSTEMS=0 -DOMC_NDELAY_EXPRESSIONS=0 -DOMC_NVAR_STRING=0 -c -o CallExternalPython_functions.o CallExternalPython_functions.c In file included from CallExternalPython_functions.c:7: ./CallExternalPython_includes.h:5:10: fatal error: 'Python.h' file not found #include ^~~~~~~~~~ 1 error generated. : recipe for target 'CallExternalPython_functions.o' failed make: *** [CallExternalPython_functions.o] Error 1 make: *** Waiting for unfinished jobs.... Compilation process failed. Exited with code 2. I checked that gcc is installed. I have the package python3-dev, so that Python.h exists. I copied a path to Python.h in the ModelicaPath to be sure it's not a path issue. Any idea how I could solve this ?" task assigned high OMPython 1.16.0 python.h, python, interoperability