[...]
/usr/bin/omc -g=MetaModelica -n=1  build/CodegenOMSIC_Equations.stamp.mos
/usr/bin/omc -g=MetaModelica -n=1  build/CodegenOMSIC.stamp.mos
/usr/bin/omc -g=MetaModelica -n=1  build/CodegenOMSI_common.stamp.mos
/usr/bin/omc -g=MetaModelica -n=1  build/CodegenFMUCppOld.stamp.mos
/usr/bin/omc -g=MetaModelica -n=1  build/CodegenFMUCpp.stamp.mos
/usr/bin/omc -g=MetaModelica -n=1  build/CodegenFMUCommon.stamp.mos
2 errors out of 2 messages:
[/home/silvano/.cache/pikaur/build/openmodelica-git/src/openmodelica-git/OMCompiler/Compiler/Template/CodegenFMUCommon.mo:4395:9-4395:51:writable] Error: Class realAlmostEq not found in scope CodegenFMUCommon.baseUnitAttributes.$match scope$.$pattern type scope$ (looking for a function or record).
[/home/silvano/.cache/pikaur/build/openmodelica-git/src/openmodelica-git/OMCompiler/Compiler/Template/CodegenFMUCommon.mo:1:1-4860:21:writable] Error: Failed to compile all functions in package CodegenFMUCommon.
make[4]: *** [Makefile.common:153: build/CodegenFMUCommon.stamp] Errore 1
make[3]: *** [Makefile.common:15: generate-files-in-steps] Errore 2
make[2]: *** [Makefile.common:6: all] Errore 2
make[2]: uscita dalla directory «/home/silvano/.cache/pikaur/build/openmodelica-git/src/openmodelica-git/OMCompiler/Compiler/boot»
make[1]: *** [Makefile:100: omc-bootstrapped] Errore 2
make[1]: uscita dalla directory «/home/silvano/.cache/pikaur/build/openmodelica-git/src/openmodelica-git/OMCompiler»
make: *** [Makefile:12: omc.skip] Errore 2