Object file creation error during build

[Altera_Forum]

Im using the 9.1 version of the Nios tool and when I include one assembly source file and try to build my project, I notice the corresponding object file is not being created. Therefore I am getting undefined reference errors for the functions I have made in the source file. Im using the correct extension (.S) so I cant seem to figure out whats going on. Anyone else run into a similar problem?

[Altera_Forum]

We're seeing the same problem. It looks like the IDE is not adding the assembly files to the ASM_SRCS variable in the application makefile. I'm calling it a bug at this point. 

 Jake

[Altera_Forum]

Figured out the solution. Apparently the extension is case sensitive so if you rename you file to xxx.s instead of xxx.S, it should build properly.

[Altera_Forum]

I do not agree with your workaround. 

 It may certainly work for pure assembly, but not assembly code that must be pre-processed by the C pre-processor.   Indeed, the fundamental difference between a .s and a .S file is the implicit pre-processing stage of the .S file to include files with# include directives and conditionally include code with# if/#ifdef/(etc...) directives.   See gcc manual, chapter "3.2 Options Controlling the Kind of Output" : file.s Assembler code. file.S Assembler code which must be preprocessed.   I therefore do also consider this to be a bug.