Compiling Simulink project fails w/o discernable Error

As the topic title states, the following is the Diagnostics code outputted. Besides the Error 1 and Returns error 2, there is no actaul error message in the diagnostics report, so I'm kinda stumped what went wrong here

### Starting build procedure for model: BasicInnerWorksExtended
 Code Generation  1
Elapsed: 5 sec
### Generating code into build folder: C:\Users\Benutzer1\Documents\MATLAB\BasicInnerWorksExtended_grt_rtw
### Invoking Target Language Compiler on BasicInnerWorksExtended.rtw
### Using System Target File: D:\MATLAB\R2016b\rtw\c\grt\grt.tlc
### Loading TLC function libraries
### Initial pass through model to cache user defined code
### Caching model source code
### Writing header file BasicInnerWorksExtended.h
### Writing header file BasicInnerWorksExtended_types.h
### Writing header file rtwtypes.h
### Writing header file builtin_typeid_types.h
.
### Writing header file multiword_types.h
### Writing header file rtGetInf.h
### Writing source file rtGetInf.c
### Writing source file BasicInnerWorksExtended.c
### Writing header file BasicInnerWorksExtended_private.h
### Writing header file rtmodel.h
### Writing source file BasicInnerWorksExtended_data.c
.
### Writing header file rt_nonfinite.h
### Writing source file rt_nonfinite.c
### Writing header file rtGetNaN.h
### Writing source file rtGetNaN.c
### TLC code generation complete.
### Using toolchain: MinGW64 v4.x | gmake (64-bit Windows)
### 'C:\Users\Benutzer1\Documents\MATLAB\BasicInnerWorksExtended_grt_rtw\BasicInnerWorksExtended.mk' is up to date
### Building 'BasicInnerWorksExtended': D:\MATLAB\R2016b\bin\win64\gmake  -f BasicInnerWorksExtended.mk all
C:\Users\Benutzer1\Documents\MATLAB\BasicInnerWorksExtended_grt_rtw>cd .
C:\Users\Benutzer1\Documents\MATLAB\BasicInnerWorksExtended_grt_rtw>if "" == "" (D:\MATLAB\R2016b\bin\win64\gmake  -f BasicInnerWorksExtended.mk all )  else (D:\MATLAB\R2016b\bin\win64\gmake  -f BasicInnerWorksExtended.mk  )
C:\mingw\mingw64\bin/gcc -c -std=c99 -pedantic -fwrapv -O0 -DMAT_FILE=1 -DINTEGER_CODE=0 -DMT=0 -DCLASSIC_INTERFACE=0 -DALLOCATIONFCN=0 -DONESTEPFCN=1 -DTERMFCN=1 -DMULTI_INSTANCE_CODE=0 -DTID01EQ=1 -DMODEL=BasicInnerWorksExtended -DNUMST=2 -DNCSTATES=1 -DHAVESTDIO -DRT -DUSE_RTMODEL -IC:/Users/Benutzer1/Documents/MATLAB/BasicInnerWorksExtended_grt_rtw -IC:/Users/Benutzer1/Documents/MATLAB -IC:/Users/Benutzer1/Downloads -ID:/MATLAB/R2016b/extern/include -ID:/MATLAB/R2016b/simulink/include -ID:/MATLAB/R2016b/rtw/c/src -ID:/MATLAB/R2016b/rtw/c/src/ext_mode/common -o "BasicInnerWorksExtended.obj" "BasicInnerWorksExtended.c"
gmake: *** [BasicInnerWorksExtended.obj] Error 1
C:\Users\Benutzer1\Documents\MATLAB\BasicInnerWorksExtended_grt_rtw>echo The make command returned an error of 2
The make command returned an error of 2
C:\Users\Benutzer1\Documents\MATLAB\BasicInnerWorksExtended_grt_rtw>An_error_occurred_during_the_call_to_make
Der Befehl "An_error_occurred_during_the_call_to_make" ist entweder falsch geschrieben oder
konnte nicht gefunden werden.
### Build procedure for model: 'BasicInnerWorksExtended' aborted due to an error.
Error(s) encountered while building "BasicInnerWorksExtended":
### Failed to generate all binary outputs.